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WO2014075614A1 - Dispositif de sous-module par valve de convertisseur modulaire multi-niveaux à base de dispositif à thyristors, et procédé de commande associé - Google Patents

Dispositif de sous-module par valve de convertisseur modulaire multi-niveaux à base de dispositif à thyristors, et procédé de commande associé Download PDF

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Publication number
WO2014075614A1
WO2014075614A1 PCT/CN2013/087110 CN2013087110W WO2014075614A1 WO 2014075614 A1 WO2014075614 A1 WO 2014075614A1 CN 2013087110 W CN2013087110 W CN 2013087110W WO 2014075614 A1 WO2014075614 A1 WO 2014075614A1
Authority
WO
WIPO (PCT)
Prior art keywords
thyristor
capacitor
voltage
current
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/087110
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English (en)
Chinese (zh)
Inventor
温家良
王秀环
郭高朋
吴婧
王宇
杨杰
药韬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Smart Grid Research Institute of SGCC
State Grid Corp of China SGCC
Original Assignee
State Grid Smart Grid Research Institute of SGCC
State Grid Corp of China SGCC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Smart Grid Research Institute of SGCC, State Grid Corp of China SGCC filed Critical State Grid Smart Grid Research Institute of SGCC
Publication of WO2014075614A1 publication Critical patent/WO2014075614A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • 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
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • 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
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage

Definitions

  • MMC converter valve sub-module device based on thyristor device and control method thereof
  • the invention relates to the field of power system and power electronics, in particular to a MMC converter valve sub-module device based on a thyristor device and a control method thereof, in particular to a MMC converter valve sub-module topology structure device based on a thyristor device and control thereof method.
  • VSC voltage source control
  • MMC modular multi-level
  • the structure of the sub-module is very important for the performance and control complexity of the VSC converter valve.
  • the sub-module structure currently used is shown in Figure 1.
  • the two-IGBT structure consists of two IGBT devices and one capacitor, by controlling the turn-on and turn-on of the IGBT device. Turn off the output voltage.
  • IGBT devices Compared with thyristor devices, IGBT devices have large switching losses and complicated control. The rated voltage and current of a single device are low. As the voltage level increases, the number of sub-modules in series increases, and the balance between sub-modules is difficult. It is not conducive to the development of the converter valve to high pressure and large capacity. Summary of the invention
  • the present invention provides an MMC converter valve sub-module device based on a thyristor device and a control method thereof, and the MMC converter valve sub-module structure based on the thyristor device uses a thyristor device instead of the IGBT device, thereby reducing The switching loss of the device reduces the control complexity and improves the conversion efficiency of the sub-module.
  • a thyristor-based MMC converter valve sub-module device is improved in that the device includes a main circuit and a forced commutation circuit connected in parallel with both ends thereof; the main circuit includes a thyristor unit I, a thyristor unit, and Capacitor C; the thyristor unit I and the thyristor unit II are each composed of a thyristor and a diode connected in anti-parallel thereto.
  • the thyristor unit I is connected in parallel with the thyristor unit ⁇ ; the capacitor C is connected between the thyristor unit I and the thyristor unit ⁇ .
  • the thyristor unit 1 includes a thyristor T1 and a diode D1 connected in anti-parallel thereto; the cathode of the thyristor T1, the anode of the diode D1, the cathode of the diode D1, and the anode of the thyristor T1 are sequentially connected to form a closed loop I; the thyristor The unit ⁇ includes a thyristor ⁇ 2 and a diode D2 connected in anti-parallel thereto; the cathode of the thyristor ⁇ 2, the anode connection of the diode D2, the cathode of the diode D2, and the anode of the thyristor ⁇ 2 are sequentially connected to form a closed loop II.
  • the number of the forced commutation circuits is 2; one of the forced commutation circuits includes thyristors ⁇ 3 and ⁇ 5, the inductor L1 and the capacitor C1; the inductor L1 and the capacitor C1 are connected in series to form an L1-C1 branch; the thyristor ⁇ 5 is connected in parallel with the L1-C1 branch; thyristor ⁇ 3 is connected between the L1-C1 branch and the thyristor unit I;
  • Another forced commutation circuit includes thyristors ⁇ 4 and ⁇ 6, an inductor L2 and a capacitor C2; the inductor L2 and the capacitor C2 are connected in series to form an L2-C2 branch; the thyristor ⁇ 6 is connected in parallel with the L2-C2 branch; the thyristor ⁇ 4 is connected to the L2 - between the C2 branch and the thyristor unit II.
  • the present invention is based on another object of the present invention to provide a control method for a thyristor-based MMC converter valve sub-module device, the improvement comprising the steps of:
  • the submodule operates and outputs a voltage.
  • precharging the capacitor C1 and the capacitor C2 in the two forced commutation circuits respectively comprises the following steps:
  • capacitor C charges capacitor C1, until voltage U C1 across capacitor C1 is greater than or equal to the voltage value of capacitor C, the thyristors T3 and T2 are turned off;
  • Trigger thyristor T5 capacitor C1 forms an oscillating circuit along the inductor L1-thyristor ⁇ 5, so that the voltage on the capacitor C1 is reversed.
  • the oscillating current is zero, the voltage of the capacitor C1 is -U C1 , and the thyristor T5 is turned off;
  • Trigger thyristor T6 capacitor C2 forms an oscillating circuit along thyristor -6-inductor L2, so that the voltage on capacitor C2 is reversed.
  • the oscillating current is zero, the voltage of capacitor C2 is -U C2 , the thyristor T6 Shut down.
  • the sub-module working and outputting the voltage includes the following steps: 1. When the current I is positive, the thyristor T1 is triggered, the thyristor ⁇ 2 is turned off, and the thyristor T1 flows current as a current. I, the output voltage is zero;
  • the capacitor C1 forms an oscillating circuit along the diode D1-thyristor ⁇ 3-inductor L1, so that the current flowing through the thyristor T1 is zero, the thyristor T1 is turned off, and when the oscillating current crosses zero, the thyristor ⁇ 3 is turned off due to During the oscillation process, the current I supplements the oscillation circuit loss, the voltage of the capacitor C1 is +U C1 , the current I is transferred to the capacitor C-diode D2 loop, and the output voltage is the voltage Uc of the capacitor C ;
  • Trigger thyristor T5 capacitor C1 oscillates along the loop of inductor L1-thyristor ⁇ 5, so that the voltage of capacitor C1 is reversed.
  • the oscillating current is zero, the voltage on capacitor C1 is -U C1 , which is ready for forced commutation of the next thyristor T1;
  • the capacitor C2 forms an oscillating circuit along the inductor L2-thyristor ⁇ 4-diode D2, so that the current flowing through the thyristor ⁇ 2 is zero, and the thyristor ⁇ 2 is turned off.
  • the thyristor ⁇ 4 is turned off due to
  • the current I supplements the oscillation circuit loss
  • the voltage of the capacitor C2 is +U C2
  • the current I is transferred to the circuit of the diode D1, and the output voltage is zero;
  • Trigger thyristor T6 capacitor C2 oscillates along thyristor -6-inductor L2 loop, so that the voltage of capacitor C2 is reversed.
  • the voltage on capacitor C2 is -U C2 , which is the preparation for forced commutation of the next thyristor T2.
  • the MMC converter valve sub-module structure based on the thyristor device uses the thyristor device instead of the IGBT device, which reduces the switching loss of the device, reduces the control complexity, and improves the conversion efficiency of the sub-module;
  • Single thyristor device has higher rated voltage and current than IGBT device.
  • the voltage of the converter valve is increased, the number of series of sub-modules required is small, which reduces the difficulty of voltage equalization between sub-modules, and is more conducive to MMC converter valve. Towards higher voltage levels.
  • the thyristor device provided by the invention has mature process and high reliability compared with the IGBT device.
  • Figure 1 shows the topology of the MMC converter valve submodule based on IGBT device
  • FIG. 2 is a topological structural view of a thyristor-based MMC converter valve sub-module provided by the present invention. detailed description
  • the topology structure of the thyristor-based MMC converter valve sub-module provided by the present invention is as shown in FIG. 2, including a main circuit and a forced commutation circuit connected in parallel with the two ends thereof; the main circuit includes a thyristor unit I, a thyristor unit II and a capacitor C;
  • the thyristor unit I and the thyristor unit II are each composed of a thyristor and a diode connected in anti-parallel thereto.
  • the thyristor unit I is connected in parallel with the thyristor unit ;; the capacitor C is connected between the thyristor unit I and the thyristor unit ⁇ .
  • the thyristor unit 1 includes a thyristor T1 and a diode D1 connected in anti-parallel thereto; the cathode of the thyristor T1, the anode of the diode D1, the cathode of the diode D1, and the anode of the thyristor T1 are sequentially connected to form a closed loop I; the thyristor unit includes a thyristor T2 and a diode D2 in anti-parallel thereto; the cathode of the thyristor T2, the anode of the diode D2, the cathode of the diode D2, and the anode of the thyristor T2 are sequentially connected to form a closed loop II.
  • the number of forced commutation circuits is 2; one of the forced commutation circuits includes thyristors T3 and T5, an inductor L1 and a capacitor C1; the inductor L1 and the capacitor C1 are connected in series to form an L1-C1 branch; the thyristors ⁇ 5 and L1- The C1 branch is connected in parallel; the thyristor ⁇ 3 is connected between the L1-C1 branch and the thyristor unit I;
  • Another forced commutation circuit includes thyristors ⁇ 4 and ⁇ 6, an inductor L2 and a capacitor C2; the inductor L2 and the capacitor C2 are connected in series to form an L2-C2 branch; the thyristor ⁇ 6 is connected in parallel with the L2-C2 branch; the thyristor ⁇ 4 is connected to the L2 - between the C2 branch and the thyristor unit II.
  • the method for controlling a thyristor-based MMC converter valve sub-module device comprises the following steps:
  • capacitor C charges capacitor C1, until voltage U C1 across capacitor C1 is greater than or equal to the voltage value of capacitor C, the thyristors T3 and T2 are turned off;
  • capacitor CI forms an oscillating circuit along the inductor L1-thyristor ⁇ 5, so that the voltage on the capacitor C1 is reversed.
  • the oscillating current is zero, the voltage of the capacitor C1 is -U C1 , and the thyristor T5 is turned off;
  • Trigger thyristor T6 capacitor C2 forms an oscillating circuit along thyristor -6-inductor L2, so that the voltage on capacitor C2 is reversed.
  • the oscillating current is zero, the voltage of capacitor C2 is -U C2 , and the thyristor T6 is turned off.
  • the capacitor C1 forms an oscillating circuit along the diode D1-thyristor ⁇ 3-inductor L1, so that the current flowing through the thyristor T1 is zero, the thyristor T1 is turned off, and when the oscillating current crosses zero, the thyristor ⁇ 3 is turned off due to During the oscillation process, the current I supplements the oscillation circuit loss, the voltage of the capacitor C1 is +U C1 , the current I is transferred to the capacitor C-diode D2 loop, and the output voltage is the voltage Uc of the capacitor C ;
  • Trigger thyristor T5 capacitor C1 oscillates along the loop of inductor L1-thyristor ⁇ 5, so that the voltage of capacitor C1 is reversed.
  • the oscillating current is zero, the voltage on capacitor C1 is -U C1 , which is ready for forced commutation of the next thyristor T1;
  • the capacitor C2 forms an oscillating circuit along the inductor L2-thyristor ⁇ 4-diode D2, so that the current flowing through the thyristor ⁇ 2 is zero, and the thyristor ⁇ 2 is turned off.
  • the thyristor ⁇ 4 is turned off due to
  • the current I supplements the oscillation circuit loss
  • the voltage of the capacitor C2 is +U C2
  • the current I is transferred to the circuit of the diode D1, and the output voltage is zero;
  • Trigger thyristor T6 capacitor C2 oscillates along thyristor -6-inductor L2 loop, so that the voltage of capacitor C2 is reversed. When the oscillating current is zero, the voltage on capacitor C2 is -U C2 , which is the preparation for forced commutation of the next thyristor T2.
  • the above four working modes are each run once for one working cycle, and the submodule outputs electricity.
  • the pressure Uo is zero and U c .

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

Abstract

La présente invention concerne le domaine des systèmes de puissance et des circuits électroniques de puissance, et concerne en particulier un dispositif de sous-module par valve de convertisseur modulaire multi-niveaux à base de dispositif à thyristors, ainsi qu'un procédé de commande associé. Le dispositif comprend un circuit principal et des circuits de commutation forcée en connexion parallèle avec les deux bornes du circuit principal. Le circuit principal comprend une unité de thyristor I, une unité de thyristor II, et un condensateur C. L'unité de thyristor I et l'unité de thyristor II comprennent toutes les deux un thyristor et une diode en connexion parallèle inverse avec le thyristor. Le procédé comprend les étapes suivantes : (1) une étape consistant à précharger respectivement un condensateur C1 et un condensateur C2 dans les deux circuits de commutation forcée ; et (2) une étape dans laquelle le sous-module travaille et sort une tension. La structure de sous-module par valve de convertisseur modulaire multi-niveaux à base de dispositif à thyristors utilise un dispositif de thyristor pour remplacer un dispositif de transistor bipolaire à porte isolée, ce qui permet ainsi de réduire la perte en commutation du dispositif, de réduire la complexité des commandes, et d'améliorer le rendement de transformation du sous-module.
PCT/CN2013/087110 2012-11-14 2013-11-14 Dispositif de sous-module par valve de convertisseur modulaire multi-niveaux à base de dispositif à thyristors, et procédé de commande associé Ceased WO2014075614A1 (fr)

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CN201210455692.X 2012-11-14
CN201210455692.XA CN103023312B (zh) 2012-11-14 2012-11-14 一种基于晶闸管器件的mmc换流阀子模块装置及其控制方法

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2018158581A1 (fr) * 2017-03-03 2018-09-07 The University Of Birmingham Élimination d'une défaillance de commutation d'un système lcc ccht
CN110399647A (zh) * 2019-07-01 2019-11-01 南方电网科学研究院有限责任公司 一种柔性直流换流阀损耗计算方法、装置和设备
CN110870191A (zh) * 2017-07-10 2020-03-06 通用电气公司 三电平两级解耦有源npc转换器
CN112152215A (zh) * 2019-06-28 2020-12-29 北京金风科创风电设备有限公司 变流器的滤波电容工作控制装置以及方法
CN113507204A (zh) * 2021-08-20 2021-10-15 西安西电电力系统有限公司 一种用于igct-mmc柔性直流输电换流阀的可靠旁路系统及方法
CN119891709A (zh) * 2025-03-27 2025-04-25 北京怀柔实验室 功率半导体器件的驱动电路及其控制方法

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CN103023312B (zh) * 2012-11-14 2014-12-31 国网智能电网研究院 一种基于晶闸管器件的mmc换流阀子模块装置及其控制方法
CN103457504B (zh) * 2013-09-18 2015-10-28 国家电网公司 一种减少换流阀换相失败的电路
CN103618281B (zh) * 2013-11-07 2016-07-06 西安交通大学 基于人工过零技术的混合式双向全负荷直流开断装置及其开断方法
CN105014374B (zh) * 2015-07-28 2017-02-01 南京南瑞继保电气有限公司 直流换流阀的组装方法
CN105182211B (zh) * 2015-10-29 2017-09-15 江苏省电力公司电力科学研究院 用于upfc换流阀子模块内晶闸管触发检测的试验装置
CN105281555A (zh) * 2015-11-05 2016-01-27 特变电工新疆新能源股份有限公司 一种模块拓扑及基于模块拓扑的mmc型柔性直流输电系统
CN111313407B (zh) * 2020-03-03 2021-09-10 华北电力大学 一种基于附加阻尼电阻的upfc故障渡越装置及方法
US11601042B2 (en) * 2020-05-14 2023-03-07 Delta Electronics, Inc. Multi-phase AC/DC converter
CN111650504B (zh) * 2020-06-05 2022-12-09 全球能源互联网研究院有限公司 一种模拟换流阀开通关断电压的电路、方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018158581A1 (fr) * 2017-03-03 2018-09-07 The University Of Birmingham Élimination d'une défaillance de commutation d'un système lcc ccht
US10855200B2 (en) 2017-03-03 2020-12-01 The University Of Birmingham High power grid system with thyristor controls
CN110870191A (zh) * 2017-07-10 2020-03-06 通用电气公司 三电平两级解耦有源npc转换器
CN110870191B (zh) * 2017-07-10 2022-10-28 通用电气公司 三电平两级解耦有源npc转换器
CN112152215A (zh) * 2019-06-28 2020-12-29 北京金风科创风电设备有限公司 变流器的滤波电容工作控制装置以及方法
CN112152215B (zh) * 2019-06-28 2024-05-17 北京金风科创风电设备有限公司 变流器的滤波电容工作控制装置以及方法
CN110399647A (zh) * 2019-07-01 2019-11-01 南方电网科学研究院有限责任公司 一种柔性直流换流阀损耗计算方法、装置和设备
CN110399647B (zh) * 2019-07-01 2023-02-28 南方电网科学研究院有限责任公司 一种柔性直流换流阀损耗计算方法、装置和设备
CN113507204A (zh) * 2021-08-20 2021-10-15 西安西电电力系统有限公司 一种用于igct-mmc柔性直流输电换流阀的可靠旁路系统及方法
CN113507204B (zh) * 2021-08-20 2023-11-24 西安西电电力系统有限公司 一种用于igct-mmc柔性直流输电换流阀的可靠旁路系统及方法
CN119891709A (zh) * 2025-03-27 2025-04-25 北京怀柔实验室 功率半导体器件的驱动电路及其控制方法

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CN103023312A (zh) 2013-04-03

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