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CN109004848A - Tetra- level rectifier of Vienna - Google Patents

Tetra- level rectifier of Vienna Download PDF

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Publication number
CN109004848A
CN109004848A CN201810802579.1A CN201810802579A CN109004848A CN 109004848 A CN109004848 A CN 109004848A CN 201810802579 A CN201810802579 A CN 201810802579A CN 109004848 A CN109004848 A CN 109004848A
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China
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diode
switching tube
anode
series
cathode
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陈剑飞
王财胜
李剑
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Chongqing University
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Chongqing University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2173—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

本发明公开了Vienna四电平整流器。三相三线制Vienna四电平整流器主要包括A2相电路、B2相电路、C2相电路、电容C4、电容C5、电容C6和电阻R2。三相四线制Vienna四电平整流器主要包括A1相电路、B1相电路、C1相电路、电容C1、电容C2a、电容C2b、电容C3和电阻R1。A1相电路、B1相电路和C1相电路并联后分别接入g端、h端、j端、p端和q端。电容C1和电容C2a通过h端串联；电容C2a和电容C2b通过j端串联；电容C2b和电容C3通过p端串联。g端串联电阻R1后接入q端。本发明降低了开关器件电压应力，也降低了开关损耗。本发明的输入电流纹波和电流谐波畸变率更小，有利于减小输入滤波器大小，降低无源器件成本。

The invention discloses a Vienna four-level rectifier. The three-phase three-wire Vienna four-level rectifier mainly includes A 2 -phase circuit, B 2 -phase circuit, C 2 -phase circuit, capacitor C 4 , capacitor C 5 , capacitor C 6 and resistor R 2 . The three-phase four-wire Vienna four-level rectifier mainly includes A 1 -phase circuit, B 1 -phase circuit, C 1 -phase circuit, capacitor C 1 , capacitor C 2a , capacitor C 2b , capacitor C 3 and resistor R 1 . A 1 -phase circuit, B 1 -phase circuit and C 1 -phase circuit are connected in parallel and connected to terminal g, terminal h, terminal j, terminal p and terminal q respectively. Capacitor C 1 and capacitor C 2a are connected in series through terminal h; capacitor C 2a and capacitor C 2b are connected in series through terminal j; capacitor C 2b and capacitor C 3 are connected in series through terminal p. The g terminal is connected to the q terminal after the resistor R 1 is connected in series. The invention reduces the voltage stress of the switching device and also reduces the switching loss. The invention has smaller input current ripple and current harmonic distortion rate, which is beneficial to reduce the size of the input filter and reduce the cost of passive components.

Description

Vienna四电平整流器Vienna four-level rectifier

技术领域technical field

本发明涉及电气领域，具体是Vienna四电平整流器。The invention relates to the electrical field, in particular to a Vienna four-level rectifier.

背景技术Background technique

Vienna三电平整流器被广泛应用于电动汽车充电桩、通信电源、工业变频器和交直流传动系统等低压应用领域(<480VAC)。由于Vienna三电平整流器的开关管电压应力为输出直流母线电压的一半，不适用于更高电压等级的大功率应用场合。虽然市场上已有应用多个开关器件串联的两电平、三电平变流器的产品，但其设计布局存在可靠性差，换流回路较大，开关器件动静态均压难度大，输入电流总谐波畸变率高，生成成本高等问题。Vienna three-level rectifiers are widely used in low-voltage applications (<480VAC) such as electric vehicle charging piles, communication power supplies, industrial frequency converters, and AC/DC drive systems. Since the switch tube voltage stress of the Vienna three-level rectifier is half of the output DC bus voltage, it is not suitable for high-power applications with higher voltage levels. Although there are two-level and three-level converters in the market that use multiple switching devices connected in series, their design layout has poor reliability, the commutation circuit is large, the dynamic and static voltage equalization of switching devices is difficult, and the input current The total harmonic distortion rate is high, and the generation cost is high.

发明内容Contents of the invention

本发明的目的是解决现有技术中存在的问题。The purpose of the present invention is to solve the problems existing in the prior art.

为实现本发明目的而采用的技术方案是这样的，一种三相三线制Vienna四电平整流器，主要包括A2相电路、B2相电路、C2相电路、电容C4、电容C5、电容C6和电阻R2。The technical scheme adopted for realizing the object of the present invention is such that a three-phase three-wire Vienna four-level rectifier mainly includes A 2 -phase circuit, B 2 -phase circuit, C 2 -phase circuit, capacitor C 4 , capacitor C 5 , capacitor C 6 and resistor R 2 .

记电容C4的两端分别为G端和H端。记电容C5的两端分别为H端和J端。记电容C6的两端分别为J端和P端。Note that the two ends of the capacitor C4 are the G terminal and the H terminal respectively. Note that the two ends of the capacitor C5 are the H end and the J end respectively. Note that the two ends of the capacitor C6 are the J terminal and the P terminal respectively.

A2相电路、B2相电路和C2相电路并联后分别接入G端、H端、J端和P端。A 2 -phase circuit, B 2 -phase circuit and C 2 -phase circuit are connected in parallel and connected to G terminal, H terminal, J terminal and P terminal respectively.

电容C4和电容C5通过H端串联。电容C5和电容C6通过J端串联。Capacitor C4 and capacitor C5 are connected in series through terminal H. Capacitor C5 and capacitor C6 are connected in series through terminal J.

G端串联电阻R2后接入P端。The G terminal is connected to the P terminal after being connected in series with the resistor R 2 .

A2相电路的电路结构如下所示：The circuit structure of A 2 -phase circuit is as follows:

交流电源ua2的两端分别记为E端和F端。The two ends of the AC power supply u a2 are respectively marked as the E end and the F end.

F端依次串联电感La2和二极管Da7的阳极。电感La2串联二极管Da7的阳极的一端记为i端。二极管Da7的阴极串联二极管Da9的阴极。二极管Da9的阳极串联开关管Sa5的源极。开关管Sa5的栅极悬空。开关管Sa5的漏极接入H端。二极管Da9的阳极串联开关管Sa6的漏极。开关管Sa6的栅极悬空。开关管Sa6的源极接入J端。The terminal F is connected in series with the anode of the inductor L a2 and the diode D a7 in sequence. One end of the inductance La2 connected in series with the anode of the diode Da7 is denoted as i end. The cathode of diode D a7 is connected in series with the cathode of diode D a9 . The anode of the diode D a9 is connected in series with the source of the switch S a5 . The gate of the switching tube S a5 is suspended. The drain of the switch tube S a5 is connected to the H terminal. The anode of the diode D a9 is connected in series with the drain of the switch S a6 . The gate of the switch transistor S a6 is suspended. The source of the switch tube S a6 is connected to the J terminal.

二极管Da7的阴极串联二极管Da11的阳极。二极管Da11的阴极接入G端。The cathode of diode D a7 is connected in series with the anode of diode D a11 . The cathode of diode D a11 is connected to terminal G.

二极管Da7的阴极串联开关管Sa4的漏极。开关管Sa4的栅极悬空。开关管Sa4的源极串联二极管Da8的阳极。二极管Da8的阴极串联二极管Da7的阳极。The cathode of the diode D a7 is connected in series with the drain of the switch S a4 . The gate of the switching transistor S a4 is suspended. The source of the switching tube S a4 is connected in series with the anode of the diode D a8 . The cathode of diode D a8 is connected in series with the anode of diode D a7 .

开关管Sa4的源极串联二极管Da10的阳极。二极管Da10的阴极串联二极管Da9的阳极。The source of the switching tube S a4 is connected in series with the anode of the diode D a10 . The cathode of diode D a10 is connected in series with the anode of diode D a9 .

二极管Da10的阳极串联二极管Da12的阴极。二极管Da12的阳极接入P端。The anode of diode D a10 is connected in series with the cathode of diode D a12 . The anode of the diode D a12 is connected to the P terminal.

B相电路的电路结构如下所示：The circuit structure of the B-phase circuit is as follows:

交流电源ub2的两端分别记为E端和L端。The two ends of the AC power supply u b2 are marked as the E end and the L end respectively.

L端依次串联电感Lb2和二极管Db7的阳极。二极管Db7的阴极串联二极管Db9的阴极。二极管Db9的阳极串联开关管Sb5的源极。开关管Sb5的栅极悬空。开关管Sb5的漏极接入H端。二极管Db9的阳极串联开关管Sb6的漏极。开关管Sb6的栅极悬空。开关管Sb6的源极接入J端。The L terminal is connected in series with the anode of the inductor L b2 and the diode D b7 in sequence. The cathode of diode Db7 is connected in series with the cathode of diode Db9 . The anode of the diode D b9 is connected in series with the source of the switch S b5 . The gate of the switching tube S b5 is suspended. The drain of the switch tube S b5 is connected to the H terminal. The anode of the diode D b9 is connected in series with the drain of the switch S b6 . The grid of the switching tube S b6 is suspended. The source of the switch tube S b6 is connected to the J terminal.

二极管Db7的阴极串联二极管Db11的阳极。二极管Db11的阴极接入G端。The cathode of diode D b7 is connected in series with the anode of diode D b11 . The cathode of the diode D b11 is connected to the G terminal.

二极管Db7的阴极串联开关管Sb4的漏极。开关管Sb4的栅极悬空。开关管Sb4的源极串联二极管Db8的阳极。二极管Db8的阴极串联二极管Db7的阳极。The cathode of the diode D b7 is connected in series with the drain of the switching tube S b4 . The grid of the switching tube S b4 is suspended. The source of the switching tube S b4 is connected in series with the anode of the diode D b8 . The cathode of diode Db8 is connected in series with the anode of diode Db7 .

开关管Sb4的源极串联二极管Db10的阳极。二极管Db10的阴极串联二极管Db9的阳极。The source of the switching tube S b4 is connected in series with the anode of the diode D b10 . The cathode of diode D b10 is connected in series with the anode of diode D b9 .

二极管Db10的阳极串联二极管Db12的阴极。二极管Db12的阳极接入P端。The anode of diode D b10 is connected in series with the cathode of diode D b12 . The anode of the diode D b12 is connected to the P terminal.

C相电路的电路结构如下所示：The circuit structure of the C-phase circuit is as follows:

交流电源uc2的两端分别记为E端和K端。The two ends of the AC power supply u c2 are respectively marked as the E end and the K end.

K端依次串联电感Lc2和二极管Dc7的阳极。二极管Dc7的阴极串联二极管Dc9的阴极。二极管Dc9的阳极串联开关管Sc5的源极。开关管Sc5的栅极悬空。开关管Sc5的漏极接入H端。二极管Dc9的阳极串联开关管Sc6的漏极。开关管Sc6的栅极悬空。开关管Sc6的源极接入J端。The K terminal is sequentially connected in series with the anode of the inductor L c2 and the diode D c7 . The cathode of diode Dc7 is connected in series with the cathode of diode Dc9 . The anode of the diode D c9 is connected in series with the source of the switch S c5 . The gate of the switching tube S c5 is suspended. The drain of the switching tube Sc5 is connected to the H terminal. The anode of the diode Dc9 is connected in series with the drain of the switch Sc6 . The gate of the switching tube S c6 is suspended. The source of the switch tube S c6 is connected to the J terminal.

二极管Dc7的阴极串联二极管Dc11的阳极。二极管Dc11的阴极接入G端。The cathode of diode D c7 is connected in series with the anode of diode D c11 . The cathode of the diode D c11 is connected to the G terminal.

二极管Dc7的阴极串联开关管Sc4的漏极。开关管Sc4的栅极悬空。开关管Sc4的源极串联二极管Dc8的阳极。二极管Dc8的阴极串联二极管Dc7的阳极。The cathode of the diode D c7 is connected in series with the drain of the switch S c4 . The gate of the switching tube S c4 is suspended. The source of the switching tube S c4 is connected in series with the anode of the diode D c8 . The cathode of diode Dc8 is connected in series with the anode of diode Dc7 .

开关管Sc4的源极串联二极管Dc10的阳极。二极管Dc10的阴极串联二极管Dc9的阳极。The source of the switching tube S c4 is connected in series with the anode of the diode D c10 . The cathode of diode Dc10 is connected in series with the anode of diode Dc9 .

二极管Dc10的阳极串联二极管Dc12的阴极。二极管Dc12的阳极接入P端。The anode of diode D c10 is connected in series with the cathode of diode D c12 . The anode of the diode D c12 is connected to the P terminal.

交流电源ua2、交流电源ub2和交流电源uC2通过E端并联。AC power supply u a2 , AC power supply u b2 and AC power supply u C2 are connected in parallel through terminal E.

二极管Dx11电压应力UDx11和二极管Dx12的电压应力UDx12分别如下所示：The voltage stress U Dx11 of diode Dx11 and the voltage stress U Dx12 of diode Dx12 are as follows respectively:

式中，Udc2为三相三线制Vienna四电平整流器输出直流母线电压。x＝a,b,c。In the formula, U dc2 is the output DC bus voltage of the three-phase three-wire Vienna four-level rectifier. x = a, b, c.

开关管Sx4电压应力Usx4、开关管Sx5电压应力Usx5、开关管Sx6电压应力Usx6、二极管Dx7电压应力UDx7、二极管Dx8电压应力UDx8、二极管Dx9电压应力UDx9和二极管Dx10电压应力UDx10分别如下所示：Switch tube S x4 voltage stress U sx4 , switch tube S x5 voltage stress U sx5 , switch tube S x6 voltage stress U sx6 , diode D x7 voltage stress U Dx7 , diode D x8 voltage stress U Dx8 , diode D x9 voltage stress U Dx9 and diode Dx10 voltage stress U Dx10 respectively as follows:

式中，Udc2为输出直流母线电压。x＝a,b,c。In the formula, U dc2 is the output DC bus voltage. x = a, b, c.

电容C4两端的电压UC4、电容C5两端的电压UC5和电容C6两端的电压UC6分别如下所示：The voltage U C4 across the capacitor C4 , the voltage U C5 across the capacitor C5 and the voltage U C6 across the capacitor C6 are as follows:

式中，Udc2为输出直流母线电压。In the formula, U dc2 is the output DC bus voltage.

二极管Da7、二极管Da8、二极管Db7、二极管Db8、二极管Dc7和二极管Dc8的工作频率为输入电源ua2、输入电源ub2和输入电源uc2的基波频率。The working frequency of diode D a7 , diode D a8 , diode D b7 , diode D b8 , diode D c7 and diode D c8 is the fundamental frequency of input power u a2 , input power u b2 and input power u c2 .

对三相三线制Vienna四电平整流器进行调制的主要步骤如下：The main steps of modulating the three-phase three-wire Vienna four-level rectifier are as follows:

I)设定载波频率为fs、幅值为Vc且恒定的三层三角载波C(t)。第一层三角载波记为C1(t)、第二层三角载波记为C2(t)。第三层三角载波记为C3(t)。I) Set a three-layer triangular carrier C(t) whose carrier frequency is f s , amplitude is V c and is constant. The triangular carrier wave of the first layer is denoted as C 1 (t), and the triangular carrier wave of the second layer is denoted as C 2 (t). The third layer triangular carrier is denoted as C 3 (t).

II)A2相电路的调制信号ma2(t)、B2相电路的调制信号mb2(t)和C2相电路的调制信号mc2(t)，分别如下所示：II) The modulation signal m a2 (t) of the A 2 -phase circuit, the modulation signal m b2 (t) of the B 2 -phase circuit, and the modulation signal m c2 (t) of the C 2 -phase circuit are as follows:

式中，Vm为调制信号的幅值。fm为调制信号的频率。m为调制比。Vc为三角载波C(t)的幅值。t2为调制时间。In the formula, V m is the amplitude of the modulating signal. f m is the frequency of the modulating signal. m is the modulation ratio. V c is the amplitude of triangular carrier C(t). t 2 is the modulation time.

III)利用调制波同相层叠方法，将步骤3得到的调制波和三角载波进行比较，从而产生27个控制信号。27个控制信号分别控制开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb7、开关管Sb8、开关管Sb9、二极管Db10、二极管Db11、二极管Db12、开关管Sb4、开关管Sb5、开关管Sb6、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的通断。III) Comparing the modulated wave obtained in step 3 with the triangular carrier by using the modulating wave in-phase stacking method, thereby generating 27 control signals. The 27 control signals respectively control switch tube S a4 , switch tube S a5 , switch tube S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch tube S b7 , Switch S b8 , Switch S b9 , Diode D b10 , Diode D b11 , Diode D b12 , Switch S b4 , Switch S b5 , Switch S b6 , Switch S c4 , Switch S c5 , Switch S c6 , diode D c7 , diode D c8 , diode D c9 , diode D c10 , diode D c11 and diode D c12 are switched on and off.

以1表示导通，0表示关断，三相三线制Vi enna四电平整流器的各个开关器件通断情况具体如下：1 means on, and 0 means off. The on-off status of each switching device of the three-phase three-wire Vienna four-level rectifier is as follows:

输入电压为正半周且输出电平为Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为000100010000100010000100010。When the input voltage is a positive half cycle and the output level is U dc2 , the switch S a4 , the switch S a5 , the switch S a6 , the diode D a7 , the diode D a8 , the diode D a9 , the diode D a10 , the diode D a11 , the diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch S The switching states of c5 , switching tube S c6 , diode D c7 , diode D c8 , diode D c9 , diode D c10 , diode D c11 and diode D c12 are 000100010000100010000100010.

输入电压为正半周且输出电平为2/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为110100100110100100110100100。When the input voltage is a positive half cycle and the output level is 2/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 110100100110100100110100100.

输入电压为正半周且输出电平为1/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为101100100101100100101100100。When the input voltage is a positive half cycle and the output level is 1/3U dc2 , the switch S a4 , the switch S a5 , the switch S a6 , the diode D a7 , the diode D a8 , the diode D a9 , the diode D a10 , the diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switching tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 101100100101100100101100100.

输入电压为负半周且输出电平为0时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为000010001000010001000010001。When the input voltage is a negative half cycle and the output level is 0, the switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch S c5 The switching states of the switching tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 000010001000010001000010001.

输入电压为负半周且输出电平为1/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为101011000101011000101011000。When the input voltage is a negative half cycle and the output level is 1/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 101011000101011000101011000.

输入电压为负半周且输出电平为2/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为110011000110011000110011000。When the input voltage is a negative half cycle and the output level is 2/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 110011000110011000110011000.

一种三相四线制Vienna四电平整流器，主要包括A1相电路、B1相电路、C1相电路、电容C1、电容C2a、电容C2b、电容C3和电阻R1。A three-phase four-wire Vienna four-level rectifier mainly includes A 1 -phase circuit, B 1 -phase circuit, C 1 -phase circuit, capacitor C 1 , capacitor C 2a , capacitor C 2b , capacitor C 3 and resistor R 1 .

记电容C1的两端分别为g端和h端。记电容C2a的两端分别为h端和j端。记电容C2b的两端分别为j端和p端。记电容C3的两端分别为p端和q端。Note that the two ends of the capacitor C1 are the g terminal and the h terminal respectively. Note that the two ends of the capacitor C 2a are the h end and the j end respectively. Note that the two ends of the capacitor C 2b are the j end and the p end respectively. Note that the two ends of the capacitor C3 are p-side and q-side respectively.

A1相电路、B1相电路和C1相电路并联后分别接入g端、h端、j端、p端和q端。A 1 -phase circuit, B 1 -phase circuit and C 1 -phase circuit are connected in parallel and connected to terminal g, terminal h, terminal j, terminal p and terminal q respectively.

电容C1和电容C2a通过h端串联。电容C2a和电容C2b通过j端串联。电容C2b和电容C3通过p端串联。Capacitor C 1 and capacitor C 2a are connected in series through terminal h. Capacitor C 2a and capacitor C 2b are connected in series through terminal j. Capacitor C 2b and capacitor C 3 are connected in series through terminal p.

g端串联电阻R1后接入q端。The g terminal is connected to the q terminal after the resistor R 1 is connected in series.

A1相电路的电路结构如下所示：The circuit structure of A 1 -phase circuit is as follows:

交流电源ua1的两端分别记为e端和f端。The two ends of the AC power supply u a1 are respectively marked as the e end and the f end.

e端接入电容C2a的j端。The e terminal is connected to the j terminal of the capacitor C 2a .

f端依次串联电感La1和二极管Da1的阳极。电感La1串联二极管Da1的阳极的一端记为y端。二极管Da1的阴极串联二极管Da3的阴极。二极管Da3的阳极串联开关管Sa2的源极。开关管Sa2的栅极悬空。开关管Sa2的漏极接入h端。二极管Da3的阳极串联开关管Sa3的漏极。开关管Sa3的栅极悬空。开关管Sa3的源极接入p端。The terminal f is connected in series with the anode of the inductor L a1 and the diode D a1 in sequence. One end of the inductance L a1 connected in series with the anode of the diode D a1 is denoted as the y end. The cathode of diode D a1 is connected in series with the cathode of diode D a3 . The anode of the diode D a3 is connected in series with the source of the switch S a2 . The grid of the switching transistor S a2 is suspended. The drain of the switch tube S a2 is connected to the h terminal. The anode of the diode D a3 is connected in series with the drain of the switch S a3 . The gate of the switch transistor S a3 is suspended. The source of the switch tube S a3 is connected to the p terminal.

二极管Da1的阴极串联二极管Da5的阳极。二极管Da5的阴极接入g端。The cathode of diode D a1 is connected in series with the anode of diode D a5 . The cathode of diode D a5 is connected to terminal g.

二极管Da1的阴极串联开关管Sa1的漏极。开关管Sa1的栅极悬空。开关管Sa1的源极串联二极管Da2的阳极。二极管Da2的阴极串联二极管Da1的阳极。The cathode of the diode D a1 is connected in series with the drain of the switch S a1 . The gate of the switching transistor S a1 is suspended. The source of the switching tube S a1 is connected in series with the anode of the diode D a2 . The cathode of diode D a2 is connected in series with the anode of diode D a1 .

开关管Sa1的源极串联二极管Da4的阳极。二极管Da4的阴极串联二极管Da3的阳极。The source of the switching tube S a1 is connected in series with the anode of the diode D a4 . The cathode of diode D a4 is connected in series with the anode of diode D a3 .

二极管Da4的阳极串联二极管Da6的阴极。二极管Da6的阳极接入q端。The anode of diode D a4 is connected in series with the cathode of diode D a6 . The anode of the diode D a6 is connected to the q terminal.

B1相电路的电路结构如下所示：The circuit structure of the B 1 -phase circuit is as follows:

交流电源ub1的两端分别记为e端和l端。The two ends of the AC power supply u b1 are respectively marked as the e end and the l end.

l端依次串联电感Lb1和二极管Db1的阳极。二极管Db1的阴极串联二极管Db3的阴极。二极管Db3的阳极串联开关管Sb2的源极。开关管Sb2的栅极悬空。开关管Sb2的漏极接入h端。二极管Db3的阳极串联开关管Sb3的漏极。开关管Sb3的栅极悬空。开关管Sb3的源极接入p端。The terminal l is connected in series with the anode of the inductor L b1 and the diode D b1 in sequence. The cathode of diode D b1 is connected in series with the cathode of diode D b3 . The anode of the diode D b3 is connected in series with the source of the switch S b2 . The grid of the switching tube S b2 is suspended. The drain of the switch tube S b2 is connected to the h terminal. The anode of the diode D b3 is connected in series with the drain of the switch S b3 . The grid of the switching tube S b3 is suspended. The source of the switch tube S b3 is connected to the p terminal.

二极管Db1的阴极串联二极管Db5的阳极。二极管Db5的阴极接入g端。The cathode of diode D b1 is connected in series with the anode of diode D b5 . The cathode of diode D b5 is connected to terminal g.

二极管Db1的阴极串联开关管Sb1的漏极。开关管Sb1的栅极悬空。开关管Sb1的源极串联二极管Db2的阳极。二极管Db2的阴极串联二极管Db1的阳极。The cathode of the diode D b1 is connected in series with the drain of the switch S b1 . The gate of the switch tube S b1 is suspended. The source of the switching tube S b1 is connected in series with the anode of the diode D b2 . The cathode of diode D b2 is connected in series with the anode of diode D b1 .

开关管Sb1的源极串联二极管Db4的阳极。二极管Db4的阴极串联二极管Db3的阳极。The source of the switching tube S b1 is connected in series with the anode of the diode D b4 . The cathode of diode Db4 is connected in series with the anode of diode Db3 .

二极管Db4的阳极串联二极管Db6的阴极。二极管Db6的阳极接入q端。The anode of diode Db4 is connected in series with the cathode of diode Db6 . The anode of the diode D b6 is connected to the q terminal.

C1相电路的电路结构如下所示：The circuit structure of the C 1 -phase circuit is as follows:

交流电源uc1的两端分别记为e端和k端。The two ends of the AC power supply u c1 are respectively marked as the e end and the k end.

k端依次串联电感Lc1和二极管Dc1的阳极。二极管Dc1的阴极串联二极管Dc3的阴极。二极管Dc3的阳极串联开关管Sc2的源极。开关管Sc2的栅极悬空。开关管Sc2的漏极接入h端。二极管Dc3的阳极串联开关管Sc3的漏极。开关管Sc3的栅极悬空。开关管Sc3的源极接入p端。The terminal k is connected in series with the anode of the inductor L c1 and the diode D c1 in turn. The cathode of diode D c1 is connected in series with the cathode of diode D c3 . The anode of the diode D c3 is connected in series with the source of the switch S c2 . The gate of the switching tube S c2 is suspended. The drain of the switching tube S c2 is connected to the h terminal. The anode of the diode D c3 is connected in series with the drain of the switch S c3 . The grid of the switching tube S c3 is suspended. The source of the switch tube S c3 is connected to the p terminal.

二极管Dc1的阴极串联二极管Dc5的阳极。二极管Dc5的阴极接入g端。The cathode of diode D c1 is connected in series with the anode of diode D c5 . The cathode of diode D c5 is connected to terminal g.

二极管Dc1的阴极串联开关管Sc1的漏极。开关管Sc1的栅极悬空。开关管Sc1的源极串联二极管Dc2的阳极。二极管Dc2的阴极串联二极管Dc1的阳极。The cathode of the diode D c1 is connected in series with the drain of the switch S c1 . The gate of the switching tube S c1 is suspended. The source of the switching tube S c1 is connected in series with the anode of the diode D c2 . The cathode of diode D c2 is connected in series with the anode of diode D c1 .

开关管Sc1的源极串联二极管Dc4的阳极。二极管Dc4的阴极串联二极管Dc3的阳极。The source of the switching tube S c1 is connected in series with the anode of the diode D c4 . The cathode of diode Dc4 is connected in series with the anode of diode Dc3 .

二极管Dc4的阳极串联二极管Dc6的阴极。二极管Dc6的阳极接入q端。The anode of diode Dc4 is connected in series with the cathode of diode Dc6 . The anode of the diode D c6 is connected to the q terminal.

交流电源ua1、交流电源ub1和交流电源uC1通过e端并联。AC power supply u a1 , AC power supply u b1 and AC power supply u C1 are connected in parallel through terminal e.

二极管Dx5电压应力UDx5和二极管Dx6的电压应力UDx6分别如下所示：The voltage stress U Dx5 of diode Dx5 and the voltage stress U Dx6 of diode Dx6 are as follows respectively:

式中，Udc1为三相四线制Vienna四电平整流器输出直流母线电压。x＝a,b,c。In the formula, Udc1 is the output DC bus voltage of the three-phase four-wire Vienna four-level rectifier. x = a, b, c.

开关管Sx1电压应力Usx1、开关管Sx2电压应力Usx2、开关管Sx3电压应力Usx3、二极管Dx1电压应力UDx1、二极管Dx2电压应力UDx2、二极管Dx3电压应力UDx3和二极管Dx4电压应力UDx4分别如下所示：Switch tube S x1 voltage stress U sx1 , switch tube S x2 voltage stress U sx2 , switch tube S x3 voltage stress U sx3 , diode D x1 voltage stress U Dx1 , diode D x2 voltage stress U Dx2 , diode D x3 voltage stress U Dx3 and diode Dx4 voltage stress U Dx4 respectively as follows:

式中，Udc1为输出直流母线电压。x＝a,b,c。In the formula, U dc1 is the output DC bus voltage. x = a, b, c.

电容C1两端的电压UC1和电容C3两端的电压UC3分别如下所示： The voltage U C1 across the capacitor C1 and the voltage U C3 across the capacitor C3 are as follows:

式中，Udc1为输出直流母线电压。In the formula, U dc1 is the output DC bus voltage.

电容C2a两端的电压UC2a和电容C2b两端的电压UC2b分别如下所示：The voltage U C2a across the capacitor C 2a and the voltage U C2b across the capacitor C 2b are respectively as follows:

式中，Udc1为输出直流母线电压。In the formula, U dc1 is the output DC bus voltage.

二极管Da1、二极管Da2、二极管Db1、二极管Db2、二极管Dc1和二极管Dc2的工作频率为输入电源ua1、输入电源ub1和输入电源uc1的基波频率。The working frequency of diode D a1 , diode D a2 , diode D b1 , diode D b2 , diode D c1 and diode D c2 is the fundamental frequency of input power u a1 , input power u b1 and input power u c1 .

对三相四线制Vienna四电平整流器进行调制的主要步骤如下：The main steps of modulating the three-phase four-wire Vienna four-level rectifier are as follows:

1)设定载波频率为fs、幅值为Vc且恒定的三层三角载波C(t)。第一层三角载波记为C1(t)、第二层三角载波记为C2(t)。第三层三角载波记为C3(t)。1) Set a three-layer triangular carrier C(t) whose carrier frequency is f s , amplitude is V c and is constant. The triangular carrier wave of the first layer is denoted as C 1 (t), and the triangular carrier wave of the second layer is denoted as C 2 (t). The third layer triangular carrier is denoted as C 3 (t).

2)A1相电路的调制信号ma1(t)、B1相电路的调制信号mb1(t)和C1相电路的调制信号mc1(t)，分别如下所示：2) The modulation signal m a1 (t) of the A 1 -phase circuit, the modulation signal m b1 (t) of the B 1 -phase circuit, and the modulation signal m c1 (t) of the C 1 -phase circuit are as follows:

式中，Vm为调制信号的幅值。fm为调制信号的频率。m为调制比。Vc为三角载波C(t)的幅值。t1为调制时间。In the formula, V m is the amplitude of the modulating signal. f m is the frequency of the modulating signal. m is the modulation ratio. V c is the amplitude of triangular carrier C(t). t 1 is the modulation time.

其中，调制比m如下所示：Among them, the modulation ratio m is as follows:

式中，Vm为调制信号的幅值。Vc为三角载波C(t)的幅值。In the formula, V m is the amplitude of the modulating signal. V c is the amplitude of triangular carrier C(t).

3)利用调制波同相层叠方法，将步骤3得到的调制波和三角载波进行比较，从而产生27个控制信号。27个控制信号分别控制开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的通断。3) Using the modulating wave in-phase stacking method, the modulating wave obtained in step 3 is compared with the triangular carrier to generate 27 control signals. The 27 control signals respectively control switch tube S a1 , switch tube S a2 , switch tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch tube S b1 , Switch S b2 , Switch S b3 , Diode D b1 , Diode D b2 , Diode D b3 , Diode D b4 , Diode D b5 , Diode D b6 , Switch S c1 , Switch S c2 , Switch S c3 , Diode On-off of D c1 , diode D c2 , diode D c3 , diode D c4 , diode D c5 and diode D c6 .

以1表示导通，0表示关断，三相四线制Vienna四电平整流器的各个开关器件通断情况具体如下：1 means on, and 0 means off. The on-off status of each switching device of the three-phase four-wire Vienna four-level rectifier is as follows:

输入电压为正半周且输出电平为1/2Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为000100010000100010000100010。When the input voltage is a positive half cycle and the output level is 1/2U dc1 , switch S a1 , switch S a2 , switch S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , switch The switching states of the tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 000100010000100010000100010.

输入电压为正半周且输出电平为1/6Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为110100100110100100110100100。When the input voltage is a positive half cycle and the output level is 1/6U dc1 , switch S a1 , switch S a2 , switch S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , switch The switching states of the tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 110100100110100100110100100.

输入电压为负半周且输出电平为-1/6Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为101100100101100100101100100。When the input voltage is a negative half cycle and the output level is -1/6U dc1 , the switching tube S a1 , switching tube S a2 , switching tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , The switching states of the switching tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 101100100101100100101100100.

输入电压为负半周且输出电平为-1/2Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为000010001000010001000010001。When the input voltage is a negative half cycle and the output level is -1/2U dc1 , the switching tube S a1 , switching tube S a2 , switching tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , The switch states of the switch S c2 , the switch S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 000010001000010001000010001.

本发明的技术效果是毋庸置疑的。本发明降低了开关器件电压应力，也降低了开关损耗。本发明的输入电流纹波和电流谐波畸变率更小，有利于减小输入滤波器大小，降低无源器件成本。Vienna四电平整流器，包括三相三线制Vienna四电平整流器和三相四线制Vienna四电平整流器，既适用于低压应用领域，如电动汽车充电桩，通信电源等，也适用于中压应用领域，如电动汽车快速充电站、MW级风力发电、大功率工业变频器等。The technical effect of the present invention is beyond doubt. The invention reduces the voltage stress of the switching device and also reduces the switching loss. The invention has smaller input current ripple and current harmonic distortion rate, which is beneficial to reduce the size of the input filter and reduce the cost of passive components. Vienna four-level rectifiers, including three-phase three-wire Vienna four-level rectifiers and three-phase four-wire Vienna four-level rectifiers, are not only suitable for low-voltage applications, such as electric vehicle charging piles, communication power supplies, etc., but also for medium voltage Applications, such as fast charging stations for electric vehicles, MW-level wind power generation, high-power industrial inverters, etc.

附图说明Description of drawings

图1为三相三线制Vienna四电平整流器电路结构图；Figure 1 is a circuit structure diagram of a three-phase three-wire Vienna four-level rectifier;

图2为输入电压正半周时，三相三线制Vienna四电平整流器输出电平Udc2所对应的A2相等效电路；Figure 2 is the equivalent circuit of A 2 phase corresponding to the output level U dc2 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the positive half cycle;

图3为输入电压正半周时，三相三线制Vienna四电平整流器输出电平2/3Udc2所对应的A2相等效电路；Fig. 3 is the A 2 -phase equivalent circuit corresponding to the output level 2/3U dc2 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the positive half cycle;

图4为输入电压正半周时，三相三线制Vienna四电平整流器输出电平1/3Udc2所对应的A2相等效电路；Figure 4 is the A 2 -phase equivalent circuit corresponding to the output level 1/3U dc2 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the positive half cycle;

图5为输入电压负半周时，三相三线制Vienna四电平整流器输出电平0所对应的A2相等效电路；Figure 5 shows the equivalent circuit of phase A 2 corresponding to the output level 0 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the negative half cycle;

图6为输入电压负半周时，三相三线制Vienna四电平整流器输出电平1/3Udc2所对应的A2相等效电路；Figure 6 shows the equivalent circuit of phase A 2 corresponding to the output level 1/3U dc2 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the negative half cycle;

图7为输入电压负半周时，三相三线制Vienna四电平整流器输出电平2/3Udc2所对应的A2相等效电路；Figure 7 shows the equivalent circuit of phase A 2 corresponding to the output level 2/3U dc2 of the three-phase three-wire Vienna four-level rectifier when the input voltage is in the negative half cycle;

图8为三相三线制Vienna四电平整流器B2相电路示意图；Fig. 8 is a schematic diagram of a B 2 -phase circuit of a three-phase three-wire Vienna four-level rectifier;

图9为三相三线制Vienna四电平整流器C2相电路示意图；Fig. 9 is a schematic diagram of a C 2 -phase circuit of a three-phase three-wire Vienna four-level rectifier;

图10为三相四线制Vienna四电平整流器电路结构图；Fig. 10 is a circuit structure diagram of a three-phase four-wire Vienna four-level rectifier;

图11为输入电压正半周时，三相四线制Vienna四电平整流器输出电平1/2Udc1所对应的A1相等效电路；Figure 11 is the equivalent circuit of phase A 1 corresponding to the output level 1/2U dc1 of the three-phase four-wire Vienna four-level rectifier when the input voltage is in the positive half cycle;

图12为输入电压正半周时，三相四线制Vienna四电平整流器输出电平1/6Udc1所对应的A1相等效电路；Figure 12 is the equivalent circuit of phase A 1 corresponding to the output level 1/6U dc1 of the three-phase four-wire Vienna four-level rectifier when the input voltage is in the positive half cycle;

图13为输入电压负半周时，三相四线制Vienna四电平整流器输出电平-1/6Udc1所对应的A1相等效电路；Figure 13 is the equivalent circuit of phase A 1 corresponding to the output level -1/6U dc1 of the three-phase four-wire Vienna four-level rectifier when the input voltage is in the negative half cycle;

图14为输入电压负半周时，三相四线制Vienna四电平整流器输出电平-1/2Udc1所对应的A1相等效电路；Figure 14 is the equivalent circuit of phase A 1 corresponding to the output level -1/2U dc1 of the three-phase four-wire Vienna four-level rectifier when the input voltage is in the negative half cycle;

图15为三相四线制Vienna四电平整流器B1相电路示意图；Fig. 15 is a schematic diagram of a three-phase four-wire Vienna four-level rectifier B 1 -phase circuit;

图16为三相四线制Vienna四电平整流器C1相电路示意图；Fig. 16 is a schematic diagram of a C 1 -phase circuit of a three-phase four-wire Vienna four-level rectifier;

图17为三相四线制Vienna四电平整流器调制逻辑关系示意图；Figure 17 is a schematic diagram of the modulation logic relationship of the three-phase four-wire Vienna four-level rectifier;

图18为三相四线制Vienna四电平整流器开关序列；Figure 18 is the switching sequence of the three-phase four-wire Vienna four-level rectifier;

图19为三相三线制Vienna四电平整流器调制逻辑关系示意图；Figure 19 is a schematic diagram of the modulation logic relationship of the three-phase three-wire Vienna four-level rectifier;

图20为三相三线制Vienna四电平整流器开关序列；Figure 20 is the switching sequence of the three-phase three-wire Vienna four-level rectifier;

具体实施方式Detailed ways

下面结合实施例对本发明作进一步说明，但不应该理解为本发明上述主题范围仅限于下述实施例。在不脱离本发明上述技术思想的情况下，根据本领域普通技术知识和惯用手段，做出各种替换和变更，均应包括在本发明的保护范围内。The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

实施例1：Example 1:

一种三相三线制Vienna四电平整流器，主要包括A2相电路、B2相电路、C2相电路、电容C4、电容C5、电容C6和电阻R2。A three-phase three-wire Vienna four-level rectifier mainly includes A 2 -phase circuit, B 2 -phase circuit, C 2 -phase circuit, capacitor C 4 , capacitor C 5 , capacitor C 6 and resistor R 2 .

记电容C4的两端分别为G端和H端。记电容C5的两端分别为H端和J端。记电容C6的两端分别为J端和P端。Note that the two ends of the capacitor C4 are the G terminal and the H terminal respectively. Note that the two ends of the capacitor C5 are the H end and the J end respectively. Note that the two ends of the capacitor C6 are the J terminal and the P terminal respectively.

A2相电路、B2相电路和C2相电路并联后分别接入G端、H端、J端和P端。A 2 -phase circuit, B 2 -phase circuit and C 2 -phase circuit are connected in parallel and connected to G terminal, H terminal, J terminal and P terminal respectively.

电容C4和电容C5通过H端串联。电容C5和电容C6通过J端串联。Capacitor C4 and capacitor C5 are connected in series through terminal H. Capacitor C5 and capacitor C6 are connected in series through terminal J.

G端串联电阻R2后接入P端。The G terminal is connected to the P terminal after being connected in series with the resistor R 2 .

A2相电路的电路结构如下所示：The circuit structure of A 2 -phase circuit is as follows:

交流电源ua2的两端分别记为E端和F端。The two ends of the AC power supply u a2 are respectively marked as the E end and the F end.

F端依次串联电感La2和二极管Da7的阳极。电感La2串联二极管Da7的阳极的一端记为i端。二极管Da7的阴极串联二极管Da9的阴极。二极管Da9的阳极串联开关管Sa5的源极。开关管Sa5的栅极悬空。开关管Sa5的漏极接入H端。二极管Da9的阳极串联开关管Sa6的漏极。开关管Sa6的栅极悬空。开关管Sa6的源极接入J端。The terminal F is connected in series with the anode of the inductor L a2 and the diode D a7 in sequence. One end of the inductance La2 connected in series with the anode of the diode Da7 is denoted as i end. The cathode of diode D a7 is connected in series with the cathode of diode D a9 . The anode of the diode D a9 is connected in series with the source of the switch S a5 . The gate of the switching tube S a5 is suspended. The drain of the switch tube S a5 is connected to the H terminal. The anode of the diode D a9 is connected in series with the drain of the switch S a6 . The gate of the switch transistor S a6 is suspended. The source of the switch tube S a6 is connected to the J terminal.

二极管Da7的阴极串联二极管Da11的阳极。二极管Da11的阴极接入G端。The cathode of diode D a7 is connected in series with the anode of diode D a11 . The cathode of diode D a11 is connected to terminal G.

二极管Da7的阴极串联开关管Sa4的漏极。开关管Sa4的栅极悬空。开关管Sa4的源极串联二极管Da8的阳极。二极管Da8的阴极串联二极管Da7的阳极。The cathode of the diode D a7 is connected in series with the drain of the switch S a4 . The gate of the switching transistor S a4 is suspended. The source of the switching tube S a4 is connected in series with the anode of the diode D a8 . The cathode of diode D a8 is connected in series with the anode of diode D a7 .

开关管Sa4的源极串联二极管Da10的阳极。二极管Da10的阴极串联二极管Da9的阳极。The source of the switching tube S a4 is connected in series with the anode of the diode D a10 . The cathode of diode D a10 is connected in series with the anode of diode D a9 .

二极管Da10的阳极串联二极管Da12的阴极。二极管Da12的阳极接入P端。The anode of diode D a10 is connected in series with the cathode of diode D a12 . The anode of the diode D a12 is connected to the P terminal.

B2相电路的电路结构如下所示：The circuit structure of the B 2 -phase circuit is as follows:

交流电源ub2的两端分别记为E端和L端。The two ends of the AC power supply u b2 are marked as the E end and the L end respectively.

L端依次串联电感Lb2和二极管Db7的阳极。二极管Db7的阴极串联二极管Db9的阴极。二极管Db9的阳极串联开关管Sb5的源极。开关管Sb5的栅极悬空。开关管Sb5的漏极接入H端。二极管Db9的阳极串联开关管Sb6的漏极。开关管Sb6的栅极悬空。开关管Sb6的源极接入J端。The L terminal is connected in series with the anode of the inductor L b2 and the diode D b7 in sequence. The cathode of diode Db7 is connected in series with the cathode of diode Db9 . The anode of the diode D b9 is connected in series with the source of the switch S b5 . The grid of the switching tube S b5 is suspended. The drain of the switch tube S b5 is connected to the H terminal. The anode of the diode D b9 is connected in series with the drain of the switch S b6 . The grid of the switching tube Sb6 is suspended. The source of the switch tube S b6 is connected to the J terminal.

二极管Db7的阴极串联二极管Db11的阳极。二极管Db11的阴极接入G端。The cathode of diode D b7 is connected in series with the anode of diode D b11 . The cathode of the diode D b11 is connected to the G terminal.

二极管Db7的阴极串联开关管Sb4的漏极。开关管Sb4的栅极悬空。开关管Sb4的源极串联二极管Db8的阳极。二极管Db8的阴极串联二极管Db7的阳极。The cathode of the diode D b7 is connected in series with the drain of the switching tube S b4 . The grid of the switching tube S b4 is suspended. The source of the switching tube S b4 is connected in series with the anode of the diode D b8 . The cathode of diode Db8 is connected in series with the anode of diode Db7 .

开关管Sb4的源极串联二极管Db10的阳极。二极管Db10的阴极串联二极管Db9的阳极。The source of the switching tube S b4 is connected in series with the anode of the diode D b10 . The cathode of diode D b10 is connected in series with the anode of diode D b9 .

二极管Db10的阳极串联二极管Db12的阴极。二极管Db12的阳极接入P端。The anode of diode D b10 is connected in series with the cathode of diode D b12 . The anode of the diode D b12 is connected to the P terminal.

C2相电路的电路结构如下所示：The circuit structure of the C 2 -phase circuit is as follows:

交流电源ua2的两端分别记为E端和K端。The two ends of the AC power supply u a2 are respectively marked as the E end and the K end.

K端依次串联电感Lc2和二极管Dc7的阳极。二极管Dc7的阴极串联二极管Dc9的阴极。二极管Dc9的阳极串联开关管Sc5的源极。开关管Sc5的栅极悬空。开关管Sc5的漏极接入H端。二极管Dc9的阳极串联开关管Sc6的漏极。开关管Sc6的栅极悬空。开关管Sc6的源极接入J端。The K terminal is sequentially connected in series with the anode of the inductor L c2 and the diode D c7 . The cathode of diode Dc7 is connected in series with the cathode of diode Dc9 . The anode of the diode D c9 is connected in series with the source of the switch S c5 . The gate of the switching tube S c5 is suspended. The drain of the switching tube Sc5 is connected to the H terminal. The anode of the diode Dc9 is connected in series with the drain of the switch Sc6 . The gate of the switching tube S c6 is suspended. The source of the switch tube S c6 is connected to the J terminal.

二极管Dc7的阴极串联二极管Dc11的阳极。二极管Dc11的阴极接入G端。The cathode of diode D c7 is connected in series with the anode of diode D c11 . The cathode of the diode D c11 is connected to the G terminal.

二极管Dc7的阴极串联开关管Sc4的漏极。开关管Sc4的栅极悬空。开关管Sc4的源极串联二极管Dc8的阳极。二极管Dc8的阴极串联二极管Dc7的阳极。The cathode of the diode D c7 is connected in series with the drain of the switch S c4 . The gate of the switching tube S c4 is suspended. The source of the switching tube S c4 is connected in series with the anode of the diode D c8 . The cathode of diode Dc8 is connected in series with the anode of diode Dc7 .

开关管Sc4的源极串联二极管Dc10的阳极。二极管Dc10的阴极串联二极管Dc9的阳极。The source of the switching tube S c4 is connected in series with the anode of the diode D c10 . The cathode of diode Dc10 is connected in series with the anode of diode Dc9 .

二极管Dc10的阳极串联二极管Dc12的阴极。二极管Dc12的阳极接入P端。The anode of diode D c10 is connected in series with the cathode of diode D c12 . The anode of the diode D c12 is connected to the P terminal.

交流电源ua2、交流电源ub2和交流电源uC2通过E端并联。AC power supply u a2 , AC power supply u b2 and AC power supply u C2 are connected in parallel through terminal E.

二极管Dx11电压应力UDx11和二极管Dx12的电压应力UDx12分别如下所示：The voltage stress U Dx11 of diode Dx11 and the voltage stress U Dx12 of diode Dx12 are as follows respectively:

式中，Udc2为三相三线制Vienna四电平整流器输出直流母线电压。x＝a,b,c。In the formula, U dc2 is the output DC bus voltage of the three-phase three-wire Vienna four-level rectifier. x = a, b, c.

即 which is

开关管Sx4电压应力Usx4、开关管Sx5电压应力Usx5、开关管Sx6电压应力Usx6、二极管Dx7电压应力UDx7、二极管Dx8电压应力UDx8、二极管Dx9电压应力UDx9和二极管Dx10电压应力UDx10分别如下所示：Switch tube S x4 voltage stress U sx4 , switch tube S x5 voltage stress U sx5 , switch tube S x6 voltage stress U sx6 , diode D x7 voltage stress U Dx7 , diode D x8 voltage stress U Dx8 , diode D x9 voltage stress U Dx9 and diode Dx10 voltage stress U Dx10 respectively as follows:

式中，Udc2为输出直流母线电压。x＝a,b,c。In the formula, U dc2 is the output DC bus voltage. x = a, b, c.

即 which is

电容C4两端的电压UC4、电容C5两端的电压UC5和电容C6两端的电压UC6分别如下所示：The voltage U C4 across the capacitor C4 , the voltage U C5 across the capacitor C5 and the voltage U C6 across the capacitor C6 are as follows:

式中，Udc2为输出直流母线电压。In the formula, U dc2 is the output DC bus voltage.

二极管Da7、二极管Da8、二极管Db7、二极管Db8、二极管Dc7和二极管Dc8的工作频率为输入电源ua2、输入电源ub2和输入电源uc2的基波频率。The working frequency of diode D a7 , diode D a8 , diode D b7 , diode D b8 , diode D c7 and diode D c8 is the fundamental frequency of input power u a2 , input power u b2 and input power u c2 .

实施例2：Example 2:

对三相三线制Vienna四电平整流器进行调制的主要步骤如下：The main steps of modulating the three-phase three-wire Vienna four-level rectifier are as follows:

1)设定载波频率为fs、幅值为Vc且恒定的三层三角载波C(t)。第一层三角载波记为C1(t)、第二层三角载波记为C2(t)。第三层三角载波记为C3(t)。1) Set a three-layer triangular carrier C(t) whose carrier frequency is f s , amplitude is V c and is constant. The triangular carrier wave of the first layer is denoted as C 1 (t), and the triangular carrier wave of the second layer is denoted as C 2 (t). The third layer triangular carrier is denoted as C 3 (t).

2)A2相电路的调制信号ma2(t)、B2相电路的调制信号mb2(t)和C2相电路的调制信号mc2(t)，分别如下所示：2) The modulation signal m a2 (t) of the A 2 -phase circuit, the modulation signal m b2 (t) of the B 2 -phase circuit, and the modulation signal m c2 (t) of the C 2 -phase circuit are as follows:

式中，Vm为调制信号的幅值。fm为调制信号的频率。m为调制比。Vc为三角载波C(t)的幅值。t2为调制时间。In the formula, V m is the amplitude of the modulating signal. f m is the frequency of the modulating signal. m is the modulation ratio. V c is the amplitude of triangular carrier C(t). t 2 is the modulation time.

3)利用调制波同相层叠方法，将步骤3得到的调制波和三角载波进行比较，从而产生9个开关管的控制信号。9个控制信号控制开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的通断。3) Using the modulation wave in-phase stacking method, compare the modulation wave obtained in step 3 with the triangular carrier, thereby generating the control signals of 9 switching tubes. Nine control signals control switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch Tube S b5 , switch tube S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch tube S c4 , switch tube S c5 , switch tube S c6 , diode D On-off of c7 , diode D c8 , diode D c9 , diode D c10 , diode D c11 and diode D c12 .

以1表示导通，0表示关断，以A2相电路为例，各个开关管和二极管的通断情况如表1所示。1 means on, and 0 means off. Taking A 2 -phase circuit as an example, the on-off conditions of each switch tube and diode are shown in Table 1.

表1A2相电路的开关状态Table 1A Switching status of 2 -phase circuit

UiP U 状态state Sa4 S a4 Sa5 S a5 Sa6 S a6 Da7 D a7 Da8 D Da9 D a9 Da10 D a10 Da11 D a11 Da12 D a12 Udc2 U dc2 图2figure 2 00 00 00 11 00 00 00 11 00 2/3Udc2 2/3U dc2 图3image 3 11 11 00 11 00 00 11 00 00 1/3Udc2 1/3U dc2 图4Figure 4 11 00 11 11 00 00 11 00 00 00 图5Figure 5 00 00 00 00 11 00 00 00 11 1/3Udc2 1/3U dc2 图6Image 6 11 00 11 00 11 11 00 00 00 2/3Udc2 2/3U dc2 图7Figure 7 11 11 00 00 11 11 00 00 00

输入电压为正半周且输出电平为Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为000100010000100010000100010。When the input voltage is a positive half cycle and the output level is U dc2 , the switch S a4 , the switch S a5 , the switch S a6 , the diode D a7 , the diode D a8 , the diode D a9 , the diode D a10 , the diode D a11 , the diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch S The switching states of c5 , switching tube S c6 , diode D c7 , diode D c8 , diode D c9 , diode D c10 , diode D c11 and diode D c12 are 000100010000100010000100010.

输入电压为正半周且输出电平为2/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为110100100110100100110100100。When the input voltage is a positive half cycle and the output level is 2/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 110100100110100100110100100.

输入电压为正半周且输出电平为1/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为101100100101100100101100100。When the input voltage is a positive half cycle and the output level is 1/3U dc2 , the switch S a4 , the switch S a5 , the switch S a6 , the diode D a7 , the diode D a8 , the diode D a9 , the diode D a10 , the diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switching tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 101100100101100100101100100.

输入电压为负半周且输出电平为0时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为000010001000010001000010001。When the input voltage is a negative half cycle and the output level is 0, the switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch S c5 The switching states of the switching tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 000010001000010001000010001.

输入电压为负半周且输出电平为1/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为101011000101011000101011000。When the input voltage is a negative half cycle and the output level is 1/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 101011000101011000101011000.

输入电压为负半周且输出电平为2/3Udc2时，开关管Sa4、开关管Sa5、开关管Sa6、二极管Da7、二极管Da8、二极管Da9、二极管Da10、二极管Da11、二极管Da12、开关管Sb4、开关管Sb5、开关管Sb6、二极管Db7、二极管Db8、二极管Db9、二极管Db10、二极管Db11、二极管Db12、开关管Sc4、开关管Sc5、开关管Sc6、二极管Dc7、二极管Dc8、二极管Dc9、二极管Dc10、二极管Dc11和二极管Dc12的开关状态为110011000110011000110011000。When the input voltage is a negative half cycle and the output level is 2/3U dc2 , switch S a4 , switch S a5 , switch S a6 , diode D a7 , diode D a8 , diode D a9 , diode D a10 , diode D a11 , diode D a12 , switch S b4 , switch S b5 , switch S b6 , diode D b7 , diode D b8 , diode D b9 , diode D b10 , diode D b11 , diode D b12 , switch S c4 , switch The switching states of the tube S c5 , the switch tube S c6 , the diode D c7 , the diode D c8 , the diode D c9 , the diode D c10 , the diode D c11 and the diode D c12 are 110011000110011000110011000.

实施例3：Example 3:

一种三相四线制Vienna四电平整流器，主要包括A1相电路、B1相电路、C1相电路、电容C1、电容C2a、电容C2b、电容C3和电阻R1。A three-phase four-wire Vienna four-level rectifier mainly includes A 1 -phase circuit, B 1 -phase circuit, C 1 -phase circuit, capacitor C 1 , capacitor C 2a , capacitor C 2b , capacitor C 3 and resistor R 1 .

记电容C1的两端分别为g端和h端。记电容C2a的两端分别为h端和j端。记电容C2b的两端分别为j端和p端。记电容C3的两端分别为p端和q端。Note that the two ends of the capacitor C1 are the g terminal and the h terminal respectively. Note that the two ends of the capacitor C 2a are the h end and the j end respectively. Note that the two ends of the capacitor C 2b are the j end and the p end respectively. Note that the two ends of the capacitor C3 are p-side and q-side respectively.

A1相电路、B1相电路和C1相电路并联后分别接入g端、h端、j端、p端和q端。A 1 -phase circuit, B 1 -phase circuit and C 1 -phase circuit are connected in parallel and connected to terminal g, terminal h, terminal j, terminal p and terminal q respectively.

电容C1和电容C2a通过h端串联。电容C2a和电容C2b通过j端串联。电容C2b和电容C3通过p端串联。Capacitor C 1 and capacitor C 2a are connected in series through terminal h. Capacitor C 2a and capacitor C 2b are connected in series through terminal j. Capacitor C 2b and capacitor C 3 are connected in series through terminal p.

g端串联电阻R1后接入q端。The g terminal is connected to the q terminal after the resistor R 1 is connected in series.

A1相电路的电路结构如下所示：The circuit structure of A 1 -phase circuit is as follows:

交流电源ua1的两端分别记为e端和f端。The two ends of the AC power supply u a1 are respectively marked as the e end and the f end.

e端接入电容C2a的j端。The e terminal is connected to the j terminal of the capacitor C 2a .

f端依次串联电感La1和二极管Da1的阳极。电感La1串联二极管Da1的阳极的一端记为y端。二极管Da1的阴极串联二极管Da3的阴极。二极管Da3的阳极串联开关管Sa2的源极。开关管Sa2的栅极悬空。开关管Sa2的漏极接入h端。二极管Da3的阳极串联开关管Sa3的漏极。开关管Sa3的栅极悬空。开关管Sa3的源极接入p端。The terminal f is connected in series with the anode of the inductor L a1 and the diode D a1 in sequence. One end of the inductance L a1 connected in series with the anode of the diode D a1 is denoted as the y end. The cathode of diode D a1 is connected in series with the cathode of diode D a3 . The anode of the diode D a3 is connected in series with the source of the switch S a2 . The grid of the switching transistor S a2 is suspended. The drain of the switch tube S a2 is connected to the h terminal. The anode of the diode D a3 is connected in series with the drain of the switch S a3 . The gate of the switch transistor S a3 is suspended. The source of the switch tube S a3 is connected to the p terminal.

二极管Da1的阴极串联二极管Da5的阳极。二极管Da5的阴极接入g端。The cathode of diode D a1 is connected in series with the anode of diode D a5 . The cathode of diode D a5 is connected to terminal g.

二极管Da1的阴极串联开关管Sa1的漏极。开关管Sa1的栅极悬空。开关管Sa1的源极串联二极管Da2的阳极。二极管Da2的阴极串联二极管Da1的阳极。The cathode of the diode D a1 is connected in series with the drain of the switch S a1 . The gate of the switching transistor S a1 is suspended. The source of the switching tube S a1 is connected in series with the anode of the diode D a2 . The cathode of diode D a2 is connected in series with the anode of diode D a1 .

开关管Sa1的源极串联二极管Da4的阳极。二极管Da4的阴极串联二极管Da3的阳极。The source of the switching tube S a1 is connected in series with the anode of the diode D a4 . The cathode of diode D a4 is connected in series with the anode of diode D a3 .

二极管Da4的阳极串联二极管Da6的阴极。二极管Da6的阳极接入q端。The anode of diode D a4 is connected in series with the cathode of diode D a6 . The anode of the diode D a6 is connected to the q terminal.

B1相电路的电路结构如下所示：The circuit structure of the B 1 -phase circuit is as follows:

交流电源ub1的两端分别记为e端和l端。The two ends of the AC power supply u b1 are respectively marked as the e end and the l end.

l端依次串联电感Lb1和二极管Db1的阳极。二极管Db1的阴极串联二极管Db3的阴极。二极管Db3的阳极串联开关管Sb2的源极。开关管Sb2的栅极悬空。开关管Sb2的漏极接入h端。二极管Db3的阳极串联开关管Sb3的漏极。开关管Sb3的栅极悬空。开关管Sb3的源极接入p端。The terminal l is connected in series with the anode of the inductor L b1 and the diode D b1 in sequence. The cathode of diode D b1 is connected in series with the cathode of diode D b3 . The anode of the diode D b3 is connected in series with the source of the switch S b2 . The grid of the switching tube S b2 is suspended. The drain of the switch tube S b2 is connected to the h terminal. The anode of the diode D b3 is connected in series with the drain of the switch S b3 . The grid of the switching tube S b3 is suspended. The source of the switch tube S b3 is connected to the p terminal.

二极管Db1的阴极串联二极管Db5的阳极。二极管Db5的阴极接入g端。The cathode of diode D b1 is connected in series with the anode of diode D b5 . The cathode of diode D b5 is connected to terminal g.

二极管Db1的阴极串联开关管Sb1的漏极。开关管Sb1的栅极悬空。开关管Sb1的源极串联二极管Db2的阳极。二极管Db2的阴极串联二极管Db1的阳极。The cathode of the diode D b1 is connected in series with the drain of the switch S b1 . The gate of the switch tube S b1 is suspended. The source of the switching tube S b1 is connected in series with the anode of the diode D b2 . The cathode of diode D b2 is connected in series with the anode of diode D b1 .

开关管Sb1的源极串联二极管Db4的阳极。二极管Db4的阴极串联二极管Db3的阳极。The source of the switching tube S b1 is connected in series with the anode of the diode D b4 . The cathode of diode Db4 is connected in series with the anode of diode Db3 .

二极管Db4的阳极串联二极管Db6的阴极。二极管Db6的阳极接入q端。The anode of diode Db4 is connected in series with the cathode of diode Db6 . The anode of the diode D b6 is connected to the q terminal.

C1相电路的电路结构如下所示：The circuit structure of the C 1 -phase circuit is as follows:

交流电源uc1的两端分别记为e端和k端。The two ends of the AC power supply u c1 are respectively marked as the e end and the k end.

k端依次串联电感Lc1和二极管Dc1的阳极。二极管Dc1的阴极串联二极管Dc3的阴极。二极管Dc3的阳极串联开关管Sc2的源极。开关管Sc2的栅极悬空。开关管Sc2的漏极接入h端。二极管Dc3的阳极串联开关管Sc3的漏极。开关管Sc3的栅极悬空。开关管Sc3的源极接入p端。The terminal k is connected in series with the anode of the inductor L c1 and the diode D c1 in turn. The cathode of diode D c1 is connected in series with the cathode of diode D c3 . The anode of the diode D c3 is connected in series with the source of the switch S c2 . The gate of the switching tube S c2 is suspended. The drain of the switching tube S c2 is connected to the h terminal. The anode of the diode D c3 is connected in series with the drain of the switch S c3 . The grid of the switching tube S c3 is suspended. The source of the switch tube S c3 is connected to the p terminal.

二极管Dc1的阴极串联二极管Dc5的阳极。二极管Dc5的阴极接入g端。The cathode of diode D c1 is connected in series with the anode of diode D c5 . The cathode of diode D c5 is connected to terminal g.

二极管Dc1的阴极串联开关管Sc1的漏极。开关管Sc1的栅极悬空。开关管Sc1的源极串联二极管Dc2的阳极。二极管Dc2的阴极串联二极管Dc1的阳极。The cathode of the diode D c1 is connected in series with the drain of the switch S c1 . The gate of the switching tube S c1 is suspended. The source of the switching tube S c1 is connected in series with the anode of the diode D c2 . The cathode of diode D c2 is connected in series with the anode of diode D c1 .

开关管Sc1的源极串联二极管Dc4的阳极。二极管Dc4的阴极串联二极管Dc3的阳极。The source of the switching tube S c1 is connected in series with the anode of the diode D c4 . The cathode of diode Dc4 is connected in series with the anode of diode Dc3 .

二极管Dc4的阳极串联二极管Dc6的阴极。二极管Dc6的阳极接入q端。The anode of diode Dc4 is connected in series with the cathode of diode Dc6 . The anode of the diode D c6 is connected to the q terminal.

交流电源ua1、交流电源ub1和交流电源uC1通过e端并联。AC power supply u a1 , AC power supply u b1 and AC power supply u C1 are connected in parallel through terminal e.

二极管Dx5电压应力UDx5和二极管Dx6的电压应力UDx6分别如下所示：The voltage stress U Dx5 of diode Dx5 and the voltage stress U Dx6 of diode Dx6 are as follows respectively:

式中，Udc1为三相四线制Vienna四电平整流器输出直流母线电压。x＝a,b,c。In the formula, Udc1 is the output DC bus voltage of the three-phase four-wire Vienna four-level rectifier. x = a, b, c.

即 which is

开关管Sx1电压应力Usx1、开关管Sx2电压应力Usx2、开关管Sx3电压应力Usx3、二极管Dx1电压应力UDx1、二极管Dx2电压应力UDx2、二极管Dx3电压应力UDx3和二极管Dx4电压应力UDx4分别如下所示：Switch tube S x1 voltage stress U sx1 , switch tube S x2 voltage stress U sx2 , switch tube S x3 voltage stress U sx3 , diode D x1 voltage stress U Dx1 , diode D x2 voltage stress U Dx2 , diode D x3 voltage stress U Dx3 and diode Dx4 voltage stress U Dx4 respectively as follows:

式中，Udc1为输出直流母线电压。x＝a,b,c。In the formula, U dc1 is the output DC bus voltage. x = a, b, c.

即 which is

电容C1两端的电压UC1和电容C3两端的电压UC3分别如下所示： The voltage U C1 across the capacitor C1 and the voltage U C3 across the capacitor C3 are as follows:

式中，Udc1为输出直流母线电压。In the formula, U dc1 is the output DC bus voltage.

电容C2a两端的电压UC2a和电容C2b两端的电压UC2b分别如下所示：The voltage U C2a across the capacitor C 2a and the voltage U C2b across the capacitor C 2b are respectively as follows:

式中，Udc1为输出直流母线电压。In the formula, U dc1 is the output DC bus voltage.

二极管Da1、二极管Da2、二极管Db1、二极管Db2、二极管Dc1和二极管Dc2的工作频率为输入电源ua1、输入电源ub1和输入电源uc1的基波频率。The working frequency of diode D a1 , diode D a2 , diode D b1 , diode D b2 , diode D c1 and diode D c2 is the fundamental frequency of input power u a1 , input power u b1 and input power u c1 .

实施例4：Example 4:

对三相四线制Vienna四电平整流器进行调制的主要步骤如下：The main steps of modulating the three-phase four-wire Vienna four-level rectifier are as follows:

1)设定载波频率为fs、幅值为Vc且恒定的三层三角载波C(t)。第一层三角载波记为C1(t)、第二层三角载波记为C2(t)。第三层三角载波记为C3(t)。1) Set a three-layer triangular carrier C(t) whose carrier frequency is f s , amplitude is V c and is constant. The triangular carrier wave of the first layer is denoted as C 1 (t), and the triangular carrier wave of the second layer is denoted as C 2 (t). The third layer triangular carrier is denoted as C 3 (t).

2)A1相电路的调制信号ma1(t)、B1相电路的调制信号mb1(t)和C1相电路的调制信号mc1(t)，分别如下所示：2) The modulation signal m a1 (t) of the A 1 -phase circuit, the modulation signal m b1 (t) of the B 1 -phase circuit, and the modulation signal m c1 (t) of the C 1 -phase circuit are as follows:

式中，Vm为调制信号的幅值。fm为调制信号的频率。m为调制比。Vc为三角载波C(t)的幅值。t1为调制时间。In the formula, V m is the amplitude of the modulating signal. f m is the frequency of the modulating signal. m is the modulation ratio. V c is the amplitude of triangular carrier C(t). t 1 is the modulation time.

其中，调制比m如下所示：Among them, the modulation ratio m is as follows:

式中，Vm为调制信号的幅值。Vc为三角载波C(t)的幅值。In the formula, V m is the amplitude of the modulating signal. V c is the amplitude of triangular carrier C(t).

3)利用调制波同相层叠方法，将步骤3得到的调制波和三角载波进行比较，从而产生9开关管的控制信号。9个控制信号控制开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的通断。3) Comparing the modulated wave obtained in step 3 with the triangular carrier by using the in-phase stacking method of the modulated wave, so as to generate the control signals of the 9 switching tubes. 9 control signals to control switch tube S a1 , switch tube S a2 , switch tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch tube S b1 , switch Tube S b2 , switch tube S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch tube S c1 , switch tube S c2 , switch tube S c3 , diode D On-off of c1 , diode D c2 , diode D c3 , diode D c4 , diode D c5 and diode D c6 .

以1表示导通，0表示关断，以A1相电路为例，各个开关管和二极管通断情况如表1所示。1 means on, and 0 means off. Taking A1 - phase circuit as an example, the on-off conditions of each switch tube and diode are shown in Table 1.

表1A1相电路的开关状态Table 1A Switching status of 1 -phase circuit

Uyj U 状态state Sa1 S a1 Sa2 S a2 Sa3 S a3 Da1 D a1 Da2 D a2 Da3 D a3 Da4 D a4 Da5 D a5 Da6 D a6 1/2Udc1 1/2U dc1 图11Figure 11 00 00 00 11 00 00 00 11 00 1/6Udc1 1/6U dc1 图12Figure 12 11 11 00 11 00 00 11 00 00 -1/6Udc1 -1/6U dc1 图13Figure 13 11 00 11 11 00 00 11 00 00 -1/2Udc1 -1/2U dc1 图14Figure 14 00 00 00 00 11 00 00 00 11

输入电压为正半周且输出电平为1/2Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为000100010000100010000100010。When the input voltage is a positive half cycle and the output level is 1/2U dc1 , switch S a1 , switch S a2 , switch S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , switch The switching states of the tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 000100010000100010000100010.

输入电压为正半周且输出电平为1/6Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为110100100110100100110100100。When the input voltage is a positive half cycle and the output level is 1/6U dc1 , switch S a1 , switch S a2 , switch S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , switch The switching states of the tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 110100100110100100110100100.

输入电压为负半周且输出电平为-1/6Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为101100100101100100101100100。When the input voltage is a negative half cycle and the output level is -1/6U dc1 , the switching tube S a1 , switching tube S a2 , switching tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , The switching states of the switching tube S c2 , the switching tube S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 101100100101100100101100100.

输入电压为负半周且输出电平为-1/2Udc1时，开关管Sa1、开关管Sa2、开关管Sa3、二极管Da1、二极管Da2、二极管Da3、二极管Da4、二极管Da5、二极管Da6、开关管Sb1、开关管Sb2、开关管Sb3、二极管Db1、二极管Db2、二极管Db3、二极管Db4、二极管Db5、二极管Db6、开关管Sc1、开关管Sc2、开关管Sc3、二极管Dc1、二极管Dc2、二极管Dc3、二极管Dc4、二极管Dc5和二极管Dc6的开关状态为000010001000010001000010001。When the input voltage is a negative half cycle and the output level is -1/2U dc1 , the switching tube S a1 , switching tube S a2 , switching tube S a3 , diode D a1 , diode D a2 , diode D a3 , diode D a4 , diode D a5 , diode D a6 , switch S b1 , switch S b2 , switch S b3 , diode D b1 , diode D b2 , diode D b3 , diode D b4 , diode D b5 , diode D b6 , switch S c1 , The switch states of the switch S c2 , the switch S c3 , the diode D c1 , the diode D c2 , the diode D c3 , the diode D c4 , the diode D c5 and the diode D c6 are 000010001000010001000010001.

Claims (8)

1. a kind of tetra- level rectifier of three-phase three-wire system Vienna, it is characterised in that: mainly include A2Circuitry phase, B2Circuitry phase, C2 Circuitry phase, capacitor C4, capacitor C5, capacitor C6With the resistance R2；
Remember capacitor C4Both ends be respectively the end G and the end H；Remember capacitor C5Both ends be respectively the end H and the end J；Remember capacitor C6Both ends point It Wei not the end J and the end P.
A2Circuitry phase, B2Circuitry phase and C2The end G, the end H, the end J and the end P are respectively connected to after circuitry phase is in parallel；
Capacitor C4With capacitor C5It is connected by the end H；Capacitor C5With capacitor C6It is connected by the end J；
The end G series resistance R2The end P is accessed afterwards；
A2The circuit structure of circuitry phase is as follows:
AC power source ua2Both ends be denoted as the end E and the end F respectively；
The end F is sequentially connected in series inductance La2With diode Da7Anode；Diode Da7Cathode series diode Da9Cathode；Two poles Pipe Da9Anode connect switching tube Sa5Source electrode；Switching tube Sa5Grid it is hanging；Switching tube Sa5Drain electrode access the end H；Diode Da9Anode connect switching tube Sa6Drain electrode；Switching tube Sa6Grid it is hanging；Switching tube Sa6Source electrode access the end J；
Diode Da7Cathode series diode Da11Anode；Diode Da11Cathode access the end G；
Diode Da7Cathode tandem tap pipe Sa4Drain electrode；Switching tube Sa4Grid it is hanging；Switching tube Sa4Source series two Pole pipe Da8Anode；Diode Da8Cathode series diode Da7Anode；
Switching tube Sa4Source series diode Da10Anode；Diode Da10Cathode series diode Da9Anode；
Diode Da10Anode series diode Da12Cathode；Diode Da12Anode access the end P；
B2The circuit structure of circuitry phase is as follows:
AC power source ub2Both ends be denoted as the end E and the end L respectively；
The end L is sequentially connected in series inductance Lb2With diode Db7Anode；Diode Db7Cathode series diode Db9Cathode；Two poles Pipe Db9Anode connect switching tube Sb5Source electrode；Switching tube Sb5Grid it is hanging；Switching tube Sb5Drain electrode access the end H；Diode Db9Anode connect switching tube Sb6Drain electrode；Switching tube Sb6Grid it is hanging；Switching tube Sb6Source electrode access the end J；
Diode Db7Cathode series diode Db11Anode；Diode Db11Cathode access the end G；
Diode Db7Cathode tandem tap pipe Sb4Drain electrode；Switching tube Sb4Grid it is hanging；Switching tube Sb4Source series two Pole pipe Db8Anode；Diode Db8Cathode series diode Db7Anode；
Switching tube Sb4Source series diode Db10Anode；Diode Db10Cathode series diode Db9Anode；
Diode Db10Anode series diode Db12Cathode；Diode Db12Anode access the end P；
C2The circuit structure of circuitry phase is as follows:
AC power source uc2Both ends be denoted as the end E and the end K respectively；
The end K is sequentially connected in series inductance Lc2With diode Dc7Anode；Diode Dc7Cathode series diode Dc9Cathode；Two poles Pipe Dc9Anode connect switching tube Sc5Source electrode；Switching tube Sc5Grid it is hanging；Switching tube Sc5Drain electrode access the end H；Diode Dc9Anode connect switching tube Sc6Drain electrode；Switching tube Sc6Source electrode access the end J；
Diode Dc7Cathode series diode Dc11Anode；Diode Dc11Cathode access the end G；
Diode Dc7Cathode tandem tap pipe Sc4Drain electrode；Switching tube Sc4Grid it is hanging；Switching tube Sc4Source series two Pole pipe Dc8Anode；Diode Dc8Cathode series diode Dc7Anode；
Switching tube Sc4Source series diode Dc10Anode；Diode Dc10Cathode series diode Dc9Anode；
Diode Dc10Anode series diode Dc12Cathode；Diode Dc12Anode access the end P；
AC power source ua2, AC power source ub2With AC power source uc2Pass through the parallel connection of the end E.
2. a kind of tetra- level rectifier of three-phase three-wire system Vienna according to claim 1, it is characterised in that: diode Dx11Voltage stress UDx11With diode Dx12Voltage stress UDx12It is as follows respectively:
In formula, Udc2DC bus-bar voltage is exported for tetra- level rectifier of three-phase three-wire system Vienna；X=a, b, c；
Switching tube Sx4Voltage stress Usx4, switching tube Sx5Voltage stress Usx5, switching tube Sx6Voltage stress Usx6, diode Dx7Voltage Stress UDx7, diode Dx8Voltage stress UDx8, diode Dx9Voltage stress UDx9With diode Dx10Voltage stress UDx10Respectively such as Shown in lower:
In formula, Udc2To export DC bus-bar voltage；X=a, b, c；
Capacitor C4The voltage U at both endsC4, capacitor C5The voltage U at both endsC5With capacitor C6The voltage U at both endsC6It is as follows respectively:
In formula, Udc2To export DC bus-bar voltage.
3. a kind of tetra- level rectifier of three-phase three-wire system Vienna according to claim 1, it is characterised in that: diode Da7, diode Da8, diode Db7, diode Db8, diode Dc7With diode Dc8Working frequency be input power ua2, input Power supply ub2With input power uc2Fundamental frequency.
4. a kind of tetra- level rectifier of three-phase three-wire system Vienna according to claim 1, it is characterised in that: to three-phase three The key step that tetra- level rectifier of line Vienna is modulated is as follows:
1) carrier frequency is set as fs, amplitude VcAnd three layers of constant triangular carrier C (t)；First layer triangular carrier is denoted as C1 (t), second layer triangular carrier is denoted as C2(t)；Third layer triangular carrier is denoted as C3(t)；
2)A2The modulated signal m of circuitry phasea2(t)、B2The modulated signal m of circuitry phaseb2(t) and C2The modulated signal m of circuitry phasec2 (t), as follows respectively:
In formula, VmFor the amplitude of modulated signal；fmFor the frequency of modulated signal；M is modulation ratio；VcFor the width of triangular carrier C (t) Value；t2To modulate the time；
3) modulating wave and triangular carrier that step 3 obtains are compared with phase laminating method using modulating wave, to generate 27 A control signal；27 control signals distinguish control switch pipe Sa4, switching tube Sa5, switching tube Sa6, diode Da7, diode Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb7, switching tube Sb8, switching tube Sb9, diode Db10, diode Db11, diode Db12, switching tube Sb4, switching tube Sb5, switching tube Sb6, switching tube Sc4, switching tube Sc5, switching tube Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12On-off；
Conducting is indicated with 1, and 0 indicates shutdown, each switching device break-make situation of tetra- level rectifier of three-phase three-wire system Vi enna It is specific as follows:
Input voltage is positive half cycle and output level is Udc2When, switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7, two Pole pipe Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6, two Pole pipe Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5, open Close pipe Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch state be 000100010000100010000100010；
Input voltage is positive half cycle and output level is 2/3Udc2When switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7、 Diode Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6、 Diode Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5、 Switching tube Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch state It is 110100100110100100110100100；
Input voltage is positive half cycle and output level is 1/3Udc2When, switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7, diode Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6, diode Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5, switching tube Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch State is 101100100101100100101100100；
When input voltage is negative half period and output level is 0, switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7, two poles Pipe Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6, two poles Pipe Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5, switch Pipe Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch state be 000010001000010001000010001；
Input voltage is negative half period and output level is 1/3Udc2When, switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7, diode Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6, diode Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5, switching tube Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch State is 101011000101011000101011000；
Input voltage is negative half period and output level is 2/3Udc2When, switching tube Sa4, switching tube Sa5, switching tube Sa6, diode Da7, diode Da8, diode Da9, diode Da10, diode Da11, diode Da12, switching tube Sb4, switching tube Sb5, switching tube Sb6, diode Db7, diode Db8, diode Db9, diode Db10, diode Db11, diode Db12, switching tube Sc4, switching tube Sc5, switching tube Sc6, diode Dc7, diode Dc8, diode Dc9, diode Dc10, diode Dc11With diode Dc12Switch State is 110011000110011000110011000.
5. a kind of tetra- level rectifier of three-phase four-wire system Vienna, it is characterised in that: mainly include A1Circuitry phase, B1Circuitry phase, C1 Circuitry phase, capacitor C1, capacitor C2a, capacitor C2b, capacitor C3With resistance R1；
Remember capacitor C1Both ends be respectively the end g and the end h；Remember capacitor C2aBoth ends be respectively the end h and the end j；Remember capacitor C2bBoth ends The respectively end j and the end p；Remember capacitor C3Both ends be respectively the end p and the end q；
A1Circuitry phase, B1Circuitry phase and C1The end g, the end h, the end j, the end p and the end q are respectively connected to after circuitry phase is in parallel；
Capacitor C1With capacitor C2aIt is connected by the end h；Capacitor C2aWith capacitor C2bIt is connected by the end j；Capacitor C2bWith capacitor C3Pass through the end p Series connection；
The end g series resistance R1The end q is accessed afterwards；
A1The circuit structure of circuitry phase is as follows:
AC power source ua1Both ends be denoted as the end e and the end f respectively；
E is terminated into capacitor C2aThe end j；
The end f is sequentially connected in series inductance La1With diode Da1Anode；Diode Da1Cathode series diode Da3Cathode；Two poles Pipe Da3Anode connect switching tube Sa2Source electrode；Switching tube Sa2Grid it is hanging；Switching tube Sa2Drain electrode access the end h；Diode Da3Anode connect switching tube Sa3Drain electrode；Switching tube Sa3Grid it is hanging；Switching tube Sa3Source electrode access the end p；
Diode Da1Cathode series diode Da5Anode；Diode Da5Cathode access the end g；
Diode Da1Cathode tandem tap pipe Sa1Drain electrode；Switching tube Sa1Grid it is hanging；Switching tube Sa1Source series two Pole pipe Da2Anode；Diode Da2Cathode series diode Da1Anode；
Switching tube Sa1Source series diode Da4Anode；Diode Da4Cathode series diode Da3Anode；
Diode Da4Anode series diode Da6Cathode；Diode Da6Anode access the end q；
B1The circuit structure of circuitry phase is as follows:
AC power source ub1Both ends be denoted as the end e and the end l respectively；
The end l is sequentially connected in series inductance Lb1With diode Db1Anode；Diode Db1Cathode series diode Db3Cathode；Two poles Pipe Db3Anode connect switching tube Sb2Source electrode；Switching tube Sb2Grid it is hanging；Switching tube Sb2Drain electrode access the end h；Diode Db3Anode connect switching tube Sb3Drain electrode；Switching tube Sb3Grid it is hanging；Switching tube Sb3Source electrode access the end p；
Diode Db1Cathode series diode Db5Anode；Diode Db5Cathode access the end g；
Diode Db1Cathode tandem tap pipe Sb1Drain electrode；Switching tube Sb1Grid it is hanging；Switching tube Sb1Source series two Pole pipe Db2Anode；Diode Db2Cathode series diode Db1Anode；
Switching tube Sb1Source series diode Db4Anode；Diode Db4Cathode series diode Db3Anode；
Diode Db4Anode series diode Db6Cathode；Diode Db6Anode access the end q；
C1The circuit structure of circuitry phase is as follows:
AC power source uc1Both ends be denoted as the end e and the end k respectively；
The end k is sequentially connected in series inductance Lc1With diode Dc1Anode；Diode Dc1Cathode series diode Dc3Cathode；Two poles Pipe Dc3Anode connect switching tube Sc2Source electrode；Switching tube Sc2Grid it is hanging；Switching tube Sc2Drain electrode access the end h；Diode Dc3Anode connect switching tube Sc3Drain electrode；Switching tube Sc3Grid it is hanging；Switching tube Sc3Source electrode access the end p；
Diode Dc1Cathode series diode Dc5Anode；Diode Dc5Cathode access the end g；
Diode Dc1Cathode tandem tap pipe Sc1Drain electrode；Switching tube Sc1Grid it is hanging；Switching tube Sc1Source series two Pole pipe Dc2Anode；Diode Dc2Cathode series diode Dc1Anode；
Switching tube Sc1Source series diode Dc4Anode；Diode Dc4Cathode series diode Dc3Anode；
Diode Dc4Anode series diode Dc6Cathode；Diode Dc6Anode access the end q；
AC power source ua1, AC power source ub1With AC power source uC1Pass through the parallel connection of the end e.
6. a kind of tetra- level rectifier of three-phase four-wire system Vienna according to claim 1, it is characterised in that: diode Dx5 Voltage stress UDx5With diode Dx6Voltage stress UDx6It is as follows respectively:
In formula, Udc1DC bus-bar voltage is exported for tetra- level rectifier of three-phase four-wire system Vienna；X=a, b, c；
Switching tube Sx1Voltage stress Usx1, switching tube Sx2Voltage stress Usx2, switching tube Sx3Voltage stress Usx3, diode Dx1Voltage Stress UDx1, diode Dx2Voltage stress UDx2, diode Dx3Voltage stress UDx3With diode Dx4Voltage stress UDx4It is as follows respectively It is shown:
In formula, Udc1To export DC bus-bar voltage；X=a, b, c；
Capacitor C1The voltage U at both endsC1With capacitor C3The voltage U at both endsC3It is as follows respectively:
In formula, Udc1To export DC bus-bar voltage；
Capacitor C2aThe voltage U at both endsC2aWith capacitor C2bThe voltage U at both endsC2bIt is as follows respectively:
In formula, Udc1To export DC bus-bar voltage.
7. a kind of tetra- level rectifier of three-phase four-wire system Vienna according to claim 1, it is characterised in that: diode Da1, diode Da2, diode Db1, diode Db2, diode Dc1With diode Dc2Working frequency be input power ua1, input Power supply ub1With input power uc1Fundamental frequency.
8. a kind of tetra- level rectifier of three-phase four-wire system Vienna according to claim 1, it is characterised in that: to three-phase four The key step that tetra- level rectifier of line Vienna is modulated is as follows:
1) carrier frequency is set as fs, amplitude VcAnd three layers of constant triangular carrier C (t)；First layer triangular carrier is denoted as C1 (t), second layer triangular carrier is denoted as C2(t)；Third layer triangular carrier is denoted as C3(t)；
2)A1The modulated signal m of circuitry phasea1(t)、B1The modulated signal m of circuitry phaseb1(t) and C1The modulated signal m of circuitry phasec1 (t), as follows respectively:
In formula, VmFor the amplitude of modulated signal；fmFor the frequency of modulated signal；M is modulation ratio；VcFor the width of triangular carrier C (t) Value；t1To modulate the time；
Wherein, modulation ratio m is as follows:
In formula, VmFor the amplitude of modulated signal；VcFor the amplitude of triangular carrier C (t)；
3) modulating wave and triangular carrier that step 3 obtains are compared with phase laminating method using modulating wave, to generate 27 A control signal；27 control signals distinguish control switch pipe Sa1, switching tube Sa2, switching tube Sa3, diode Da1, diode Da2, diode Da3, diode Da4, diode Da5, diode Da6, switching tube Sb1, switching tube Sb2, switching tube Sb3, diode Db1, diode Db2, diode Db3, diode Db4, diode Db5, diode Db6, switching tube Sc1, switching tube Sc2, switching tube Sc3, diode Dc1, diode Dc2, diode Dc3, diode Dc4, diode Dc5With diode Dc6On-off；
Conducting is indicated with 1, and 0 indicates shutdown, each switching device break-make situation of tetra- level rectifier of three-phase four-wire system Vienna It is specific as follows:
Input voltage is positive half cycle and output level is 1/2Udc1When, switching tube Sa1, switching tube Sa2, switching tube Sa3, diode Da1, diode Da2, diode Da3, diode Da4, diode Da5, diode Da6, switching tube Sb1, switching tube Sb2, switching tube Sb3, diode Db1, diode Db2, diode Db3, diode Db4, diode Db5, diode Db6, switching tube Sc1, switching tube Sc2, switching tube Sc3, diode Dc1, diode Dc2, diode Dc3, diode Dc4, diode Dc5With diode Dc6Switch shape State is 000100010000100010000100010；
Input voltage is positive half cycle and output level is 1/6Udc1When, switching tube Sa1, switching tube Sa2, switching tube Sa3, diode Da1, diode Da2, diode Da3, diode Da4, diode Da5, diode Da6, switching tube Sb1, switching tube Sb2, switching tube Sb3, diode Db1, diode Db2, diode Db3, diode Db4, diode Db5, diode Db6, switching tube Sc1, switching tube Sc2, switching tube Sc3, diode Dc1, diode Dc2, diode Dc3, diode Dc4, diode Dc5With diode Dc6Switch shape State is 110100100110100100110100100；
Input voltage is negative half period and output level is -1/6Udc1When, switching tube Sa1, switching tube Sa2, switching tube Sa3, diode Da1, diode Da2, diode Da3, diode Da4, diode Da5, diode Da6, switching tube Sb1, switching tube Sb2, switching tube Sb3, diode Db1, diode Db2, diode Db3, diode Db4, diode Db5, diode Db6, switching tube Sc1, switching tube Sc2, switching tube Sc3, diode Dc1, diode Dc2, diode Dc3, diode Dc4, diode Dc5With diode Dc6Switch shape State is 101100100101100100101100100；
Input voltage is negative half period and output level is -1/2Udc1When, switching tube Sa1, switching tube Sa2, switching tube Sa3, diode Da1, diode Da2, diode Da3, diode Da4, diode Da5, diode Da6, switching tube Sb1, switching tube Sb2, switching tube Sb3, diode Db1, diode Db2, diode Db3, diode Db4, diode Db5, diode Db6, switching tube Sc1, switching tube Sc2, switching tube Sc3, diode Dc1, diode Dc2, diode Dc3, diode Dc4, diode Dc5With diode Dc6Switch shape State is 000010001000010001000010001.
CN201810802579.1A 2018-07-20 2018-07-20 Tetra- level rectifier of Vienna Pending CN109004848A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080239772A1 (en) * 2007-03-30 2008-10-02 Intel Corporation Switched capacitor converters
CN201937493U (en) * 2011-01-14 2011-08-17 南京师范大学 Four-level inverter
CN105048842A (en) * 2015-09-07 2015-11-11 阳光电源股份有限公司 Single-phase four-level inverter and application circuit thereof
CN105207509A (en) * 2015-10-22 2015-12-30 北京京仪椿树整流器有限责任公司 Absorptive L-type four-level Boost circuit
CN105723607A (en) * 2013-09-23 2016-06-29 西门子公司 New four-level converter cell topology for cascaded modular multilevel converters
CN107659130A (en) * 2017-10-20 2018-02-02 安徽工程大学 A kind of control system and control method of three-phase tri-level VIENNA rectifier
CN107994794A (en) * 2017-12-29 2018-05-04 重庆大学 A kind of double-T shaped four level inverse conversions unit and its application circuit and modulator approach
CN108011399A (en) * 2018-01-08 2018-05-08 湖南工业大学 Source of resistance high-speed engine two-stage boosting grid-connected system based on VIENNA rectifier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080239772A1 (en) * 2007-03-30 2008-10-02 Intel Corporation Switched capacitor converters
CN201937493U (en) * 2011-01-14 2011-08-17 南京师范大学 Four-level inverter
CN105723607A (en) * 2013-09-23 2016-06-29 西门子公司 New four-level converter cell topology for cascaded modular multilevel converters
CN105048842A (en) * 2015-09-07 2015-11-11 阳光电源股份有限公司 Single-phase four-level inverter and application circuit thereof
CN105207509A (en) * 2015-10-22 2015-12-30 北京京仪椿树整流器有限责任公司 Absorptive L-type four-level Boost circuit
CN107659130A (en) * 2017-10-20 2018-02-02 安徽工程大学 A kind of control system and control method of three-phase tri-level VIENNA rectifier
CN107994794A (en) * 2017-12-29 2018-05-04 重庆大学 A kind of double-T shaped four level inverse conversions unit and its application circuit and modulator approach
CN108011399A (en) * 2018-01-08 2018-05-08 湖南工业大学 Source of resistance high-speed engine two-stage boosting grid-connected system based on VIENNA rectifier

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Application publication date: 20181214