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WO2014038235A1 - Circuit de commande de moteur, moteur à circuit de commande incorporé et groupe électrogène à circuit de commande incorporé le logeant en son sein, climatiseur comportant un montage de ces éléments, ventilateur de ventilation, chauffe-eau à pompe à chaleur et climatiseur incorporé de type à circulation d'eau de refroidissement/chauffage - Google Patents

Circuit de commande de moteur, moteur à circuit de commande incorporé et groupe électrogène à circuit de commande incorporé le logeant en son sein, climatiseur comportant un montage de ces éléments, ventilateur de ventilation, chauffe-eau à pompe à chaleur et climatiseur incorporé de type à circulation d'eau de refroidissement/chauffage Download PDF

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Publication number
WO2014038235A1
WO2014038235A1 PCT/JP2013/060486 JP2013060486W WO2014038235A1 WO 2014038235 A1 WO2014038235 A1 WO 2014038235A1 JP 2013060486 W JP2013060486 W JP 2013060486W WO 2014038235 A1 WO2014038235 A1 WO 2014038235A1
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WO
WIPO (PCT)
Prior art keywords
motor
drive circuit
built
circuit
air conditioner
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/JP2013/060486
Other languages
English (en)
Japanese (ja)
Inventor
倫雄 山田
篠本　洋介
卓也 下麥
石井　博幸
隼一郎 尾屋
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CN201390000738.7U priority Critical patent/CN204721259U/zh
Priority to JP2014534211A priority patent/JPWO2014038235A1/ja
Publication of WO2014038235A1 publication Critical patent/WO2014038235A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0666—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump a sensor is integrated into the pump/motor design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029—Axial fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/15—Controlling commutation time
    • H02P6/153—Controlling commutation time wherein the commutation is advanced from position signals phase in function of the speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a motor driving circuit configured on a power conversion circuit board using a semiconductor module, a motor with a built-in driving circuit and a pump motor with a built-in driving circuit, and an air conditioner, a ventilating fan, and a heat pump equipped with them.
  • the present invention relates to a water heater and a built-in cold / hot water circulation type air conditioner.
  • the speed command voltage generator and the motor drive circuit are configured on different boards, and the boards are connected by lead wires.
  • the power conversion unit constituting the motor drive circuit is a circuit accompanied by power switching, a high-frequency current flows through the lead wiring by this switching operation, and a high-frequency current is generated with respect to the reference potential of the speed command voltage generation unit that generates the speed command voltage.
  • the potential with superimposed noise is transmitted inside the motor, the reference potential inside the motor fluctuates and the speed command voltage also fluctuates, and the advance command voltage generated based on this speed command voltage is also affected by the high frequency noise. fluctuate.
  • the present invention has been made in view of the above, and a motor drive circuit that enables stable motor operation and can suppress abnormal overcurrent protection operation and generation of noise and noise, and the same It is an object to provide a motor with a built-in drive circuit, a pump motor with a built-in drive circuit, an air conditioner, a ventilation fan, a heat pump water heater, and a built-in cold / hot water circulation type air conditioner equipped with these.
  • a motor drive circuit includes a position detection sensor for detecting the position of a rotor and an inverter circuit for supplying a drive current to a stator winding.
  • An F / V conversion circuit that converts the frequency of the inverter circuit into a voltage value corresponding to the actual rotational speed of the rotor, an advance angle circuit that performs an advance angle control of the output voltage phase of the inverter circuit based on the voltage value, It is characterized by providing.
  • the motor drive circuit which enables stable motor operation
  • the circuit built-in pump motor, and the air conditioner, ventilation fan, heat pump water heater, and built-in cold / hot water circulation type air conditioner equipped with them can be obtained.
  • FIG. 1 is a diagram illustrating a configuration example of a motor drive circuit according to the embodiment.
  • FIG. 2 is a diagram illustrating a structure example of a motor with a built-in drive circuit according to the embodiment.
  • FIG. 3 is a diagram illustrating an example of component arrangement on the printed circuit board of the motor drive circuit according to the embodiment.
  • FIG. 4 is a plan view of a printed circuit board on which components constituting the motor drive circuit according to the embodiment are mounted.
  • FIG. 5 is an overview of the indoor unit and the outdoor unit of the air conditioner according to the embodiment.
  • FIG. 6 is a longitudinal sectional view of an indoor unit using a centrifugal line flow type blower fan.
  • FIG. 7 is a longitudinal sectional view of an indoor unit using an axial flow type propeller type blower fan.
  • FIG. 8 is a longitudinal sectional view of a pump motor with a built-in drive circuit according to the embodiment.
  • a motor drive circuit according to an embodiment of the present invention, a motor with a built-in drive circuit and a pump motor with a built-in drive circuit, and an air conditioner, a ventilating fan, and a heat pump water heater equipped with them
  • the built-in cold / hot water circulation type air conditioner will be described.
  • this invention is not limited by embodiment shown below.
  • FIG. 1 is a diagram illustrating a configuration example of a motor drive circuit according to an embodiment and a drive circuit built-in motor on which the motor drive circuit is mounted.
  • the motor drive circuit 3 according to the embodiment includes, as main components, a position detection sensor 5, a PWM signal generation unit 6, a filter circuit 60, an F / V conversion circuit 61, and a motor. And a drive unit 7.
  • the output of the motor drive circuit 3 is connected to the stator winding of the stator 8 to constitute the drive circuit built-in motor 4 according to the embodiment.
  • the position detection sensor 5 is composed of, for example, a Hall IC in which a Hall element is sealed with an epoxy resin as an insulator, and outputs a pulse-shaped position detection signal corresponding to the magnetic pole position of a rotor (not shown).
  • the motor drive unit 7 includes an inverter circuit 18, a logic circuit 20, an upper driver circuit 9, and a lower driver circuit 10 configured by connecting switching elements 12 to 17 in a bridge connection.
  • the main part of the element is configured in the same package of the power IC, for example.
  • each switching element 15 to 17 on the lower side of the inverter circuit 18 is grounded via a shunt resistor 28 for detecting the motor current.
  • a high voltage of 100V to 400V is applied to the inverter circuit 18 from the high voltage DC power supply 1, and a low voltage of 3V to 20V from the low voltage DC power supply 2 is applied to the logic circuit 20, the upper driver circuit 9, and the lower driver circuit 10. A voltage is applied.
  • the switching elements 12 to 17 constituting the inverter circuit 18 are constituted by, for example, MOSFETs, and the connection points of the upper switching elements 12 to 14 and the lower switching elements 15 to 17 in the inverter circuit 18. To supply driving current to the three-phase stator windings u, v, w.
  • the logic circuit 20 controls the upper driver circuit 9 and the lower driver circuit 10 based on the PWM signal input from the PWM signal generator 6, and switches the upper switching elements 12 to 14 and the lower driver circuit 10 of the inverter circuit 18.
  • the rotation of the rotor of the drive circuit built-in motor 4 according to the embodiment is controlled by turning on / off the switching elements 15 to 17 on the side.
  • the upper driver circuit 9 is, for example, mounted on a metal lead frame inside the power IC that constitutes the motor drive unit 7 and configured by HVIC (High Voltage IC) sealed with resin, and is input from the PWM signal generation unit 6. Based on the PWM signal, the gate signals of the switching elements 12 to 14 connected to the high potential side are generated.
  • HVIC High Voltage IC
  • a PN junction isolation structure or a dielectric isolation structure is used for the high withstand voltage portion of the upper driver circuit 9.
  • a PN junction isolation structure or a dielectric isolation structure is used.
  • an inexpensive HVIC can be obtained as compared with the case of a dielectric isolation structure.
  • a highly reliable HVIC that can prevent latch-up for example, can be obtained as compared with the case of a PN junction isolation structure.
  • the lower driver circuit 10 is constituted by, for example, an LVIC (Low Voltage IC) sealed with resin inside a power IC that constitutes the motor driving unit 7, and is based on a PWM signal input from the PWM signal generating unit 6. In addition, the gate signals of the switching elements 15 to 17 connected to the low potential side are generated.
  • LVIC Low Voltage IC
  • the upper driver circuit 9 and the lower driver circuit 10 are designed and managed so that their signal delay times are equal to each other, and each of the other drivers constituting the motor drive unit 7 in order to have the same temperature characteristics. Along with the main part of the component, it is sealed in the same package of the power IC. If both the upper driver circuit 9 and the lower driver circuit 10 have a dielectric isolation structure, they can be formed on the same semiconductor element.
  • the PWM signal generation unit 6 includes a counter circuit 32, an output waveform generation circuit 34, a data selection circuit 36, a PWM circuit 38, a gate block circuit 40, a dead time circuit 42, a protection reset circuit 44, an advance angle circuit 46, and a position estimation circuit.
  • the main part of each component of the PWM signal generation unit 6 is configured in, for example, the same package of a dedicated IC or a microcomputer. A low voltage of 3V to 20V is applied to the PWM signal generator 6 from the low-voltage DC power supply 2.
  • the position estimation circuit 48 outputs a position signal that is the estimated rotor position to the counter circuit 32 based on the position detection signal input from the position detection sensor 5.
  • the advance angle circuit 46 performs advance angle control of the output voltage phase of the inverter circuit 18 based on the voltage value input from the F / V conversion circuit 61, and the phase angle information of the output voltage phase advanced when performing phase control. Is output as an advance angle signal. This advance angle control will be described later.
  • the counter circuit 32 counts the time from the up edge (or down edge) of the position signal from the position estimation circuit 48 to the next down edge (or up edge) and outputs it to the output waveform generation circuit 34. Further, phase control is performed based on the advance signal from the advance circuit 46.
  • the output waveform generation circuit 34 generates a modulation waveform based on the output voltage command input via the filter circuit 60 and the time counted by the counter circuit 32.
  • the data select circuit 36 resets the modulation waveform into 60 ° reset or 360 ° reset based on a predetermined condition, and outputs a control signal of the modulation waveform to the PWM circuit 38.
  • the PWM circuit 38 compares the input modulation waveform control signal with the triangular wave to generate a PWM signal and outputs it to the gate block circuit 40. This PWM signal is output to the logic circuit 20 via the dead time circuit 42.
  • the gate block circuit 40 cuts off the PWM signal by a signal from the protection reset circuit 44.
  • the protection reset circuit 44 determines that an overcurrent is detected when the detection current detected by the shunt resistor 28 exceeds a predetermined value. The block circuit 40 is instructed to shut off.
  • the dead time circuit 42 adjusts the output timing of the PWM signal.
  • the filter circuit 60 removes high-frequency noise in the output voltage command input from the outside, and suppresses steep voltage fluctuations in the output voltage command.
  • the F / V conversion circuit 61 converts the frequency of the position detection signal input from the position detection sensor 5 into a voltage value corresponding to the actual rotational speed of the rotor, and outputs the voltage value to the advance angle circuit 46.
  • an increase in torque causes a delay in the output voltage phase of the inverter circuit with respect to the actual motor phase angle.
  • the frequency of the position detection signal detected by the Hall IC (that is, the position detection sensor 5) is converted into a voltage value corresponding to the actual rotational speed of the rotor.
  • the advance angle control is performed based on this voltage value.
  • the motor drive control can be performed with the optimum phase according to the actual number of rotations of the rotor without depending on the sudden change of the output voltage command or the voltage / current fluctuation caused by the sudden load fluctuation. Motor operation becomes possible, and it becomes possible to suppress abnormal overcurrent protection operation and generation of noise and noise.
  • the filter circuit 60 removes high-frequency noise from the output voltage command, and suppresses steep voltage fluctuations in the output voltage command. As a result, even in the output voltage control by the output voltage command, the influence by the high frequency noise described above can be suppressed, and the rapid fluctuation of the output voltage is also suppressed. Therefore, the rotation speed and the mechanical moment of inertia by the output voltage control can be reduced. The difference from the actual motor rotation speed can be reduced, and more stable motor operation is possible.
  • the on-resistance of the MOSFET is proportional to the square of the current, as described above, in the present embodiment, by performing motor drive control at an optimum phase by advance angle control, In particular, it is possible to reduce the motor current in the low rotation range as compared with a method in which the advance angle is fixed in advance according to the maximum rotation speed of the motor. Therefore, in the motor drive circuit 3 according to the present embodiment, when MOSFETs are used as the switching elements 12 to 17 constituting the inverter circuit 18, the effect of reducing the steady loss by the MOSFETs can be effectively extracted. Thus, a more efficient motor drive circuit 3 can be obtained.
  • the switching elements 12 to 17 constituting the inverter circuit 18 are, for example, silicon carbide (SiC), gallium nitride (GaN) -based materials, or a wide band such as diamond. It is suitable for application to a configuration using a MOSFET formed of a gap (hereinafter referred to as “WBG”) semiconductor.
  • SiC silicon carbide
  • GaN gallium nitride
  • WBG gap
  • a MOSFET formed of a WBG semiconductor has a smaller steady loss than a MOSFET formed of a Si (silicon) semiconductor, but has a large switching rising slope dv / dt and a large amount of noise generation.
  • the advance angle control and the output voltage control in the motor drive circuit 3 according to the present embodiment are highly resistant to high-frequency noise, so that the switching elements 12 to 17 constituting the inverter circuit 18 are formed of WBG semiconductors. Even in the case where the MOSFET is used, stable motor operation is possible.
  • FIG. 2 is a diagram illustrating a structure example of a motor with a built-in drive circuit according to the embodiment.
  • FIG. 2A shows a side cross-sectional view in which the stator 8 and the printed circuit board 21 on which the components 101, 102, and 103 of the motor drive circuit 3 are combined and integrated with a mold resin as an insulator.
  • 2 (b) shows a perspective view taken in the direction of the arrow shown in FIG. 2 (a).
  • each component 101, 102, 103 constituting the motor drive circuit 3 shown in FIG. 1 includes an external circuit (not shown) that generates an output voltage command, a high-voltage DC power supply 1, a low-voltage DC It is mounted on the same printed circuit board 21 together with the connector component 104 of the external connection lead 19 for connecting to the power supply 2 and the like, and the printed circuit board 21 is arranged to face the stator 8 configured by winding a winding around the stator core. ing.
  • the output of the motor drive circuit 3 is soldered to a connection terminal 22 for electrically coupling with the winding of the stator 8.
  • the printed circuit board 21 and the stator 8 are sealed by a mold resin 23 and mechanically coupled and integrated.
  • the mold resin 23 forms a bearing housing 24 on the side of the stator 8 facing the printed circuit board 21, and a rotor penetrating hole 25 is formed along the inner peripheral surface of the stator 8 on the opposite side.
  • a rotor in which a main shaft and a bearing are combined is fitted in the rotor through hole 25, and the bearing housing 24 and the bearing are fitted together.
  • a main shaft combined with the bearing is provided in the central portion of the printed circuit board 21, a main shaft combined with the bearing is provided.
  • a circular hole is made for penetration.
  • FIG. 3 is a diagram illustrating an example of component arrangement on the printed circuit board of the motor drive circuit according to the embodiment.
  • FIG. 3A shows the same surface as seen in the top perspective view of FIG. 2, and
  • FIG. 3B shows the back surface of FIG.
  • the surface shown in FIG. 3B is a surface facing the stator 8, it is referred to as “stator side”, and the surface shown in FIG. 3A is referred to as “anti-stator side”.
  • a through-hole mounting type component 101 is, for example, a power IC in which the main components of each component of the motor driving unit 7 described in FIG. 1 are packaged, and the surface mounting type component 102 is, for example, 1 is a packaged dedicated IC or microcomputer, and the surface-mount component 103 is, for example, a Hall element that is the position detection sensor 5 described in FIG. Is a Hall IC sealed with resin.
  • the connector part 104 of the external connection lead 19 is also described as the through-hole mounting type part 104.
  • through-hole mounting type parts 101 and 104 including a power IC are mounted on the side opposite to the stator of the printed circuit board 21, and surface mounting including a dedicated IC, a microcomputer, a Hall IC, and the like is performed.
  • the mold parts 102 and 103 are mounted on the stator side of the printed circuit board 21.
  • the mold resin 23 in contact with the surface of the printed circuit board 21 on the side opposite to the stator is interposed between the printed circuit board 21 having a large thermal resistance and the motor surface.
  • the temperature approaches, the temperature becomes lower, and the temperature gradient becomes larger than the mold resin 23 in contact with the surface of the printed circuit board 21 on the stator side.
  • a component mounted on the surface of the printed circuit board 21 on the side opposite to the stator is more susceptible to stress due to thermal shrinkage of the mold resin 23 than a component mounted on the surface of the printed circuit board 21 on the stator side.
  • the surface-mounted components 102 and 103 that are likely to suffer solder breakage due to stress are mounted on the stator side of the printed circuit board 21, and the through-hole mounted components 101 and 104 are mounted on the printed circuit board 21.
  • the soldering process of the printed circuit board 21 can be performed only in the solder flow process on the surface on the stator side where the surface-mounted components 102 and 103 are mounted.
  • the manufacturing cost of the motor drive circuit 3 to be configured can be reduced.
  • the surface of the printed circuit board 21 on the stator side faces the stator 8, and the motor drive circuit 3 and the stator 8 on the printed circuit board 21 are electrically coupled and sealed with the mold resin 23. As a result, the solder life becomes longer with respect to the thermal history, and the reliability of the motor 4 with built-in drive circuit can be improved.
  • the shape of the printed circuit board 21 is a half-moon shape with a part of a circle missing.
  • the effect by this is demonstrated.
  • FIG. 4 is a plan view of a printed circuit board on which each component constituting the motor drive circuit according to the embodiment is mounted.
  • six pieces of half-moon shaped printed circuit boards 21 on which the motor drive circuit 3 (see FIG. 1) is mounted are taken from one rectangular printed circuit board material 30.
  • the half-moon shaped printed circuit board 21 has a better material than a circular printed circuit board.
  • the main parts of each component constituting the motor drive unit 7 are collected in the same package of the through-hole mounting type power IC and mounted on the side opposite to the stator of the printed circuit board 21.
  • each component constituting the PWM signal generating unit 6 can be efficiently arranged on the stator side of the printed circuit board 21 with a surface mount type dedicated IC, microcomputer or the like. Furthermore, the main parts of the components constituting the PWM signal generation unit 6 are collected in the same package such as a surface mount type dedicated IC or microcomputer, thereby reducing the size of the printed circuit board 21 on which the motor drive circuit 3 is mounted. It is also possible to plan.
  • FIG. 5 is an overview of the indoor unit and the outdoor unit of the air conditioner according to the embodiment.
  • FIG. 6 is a longitudinal sectional view of an indoor unit using a centrifugal line flow type blower fan.
  • FIG. 7 is a longitudinal sectional view of an indoor unit using an axial flow type propeller type blower fan.
  • the drive circuit built-in motor 4 according to the present embodiment includes a centrifugal line flow type blower fan 53 used in the indoor unit 51 shown in FIG. It is suitable to be applied as a motor for driving the axial flow type propeller type blower fan 83 used in the indoor unit 81 shown in FIG. 7 or the blower fan 54 of the outdoor unit 52 (see FIG. 5).
  • the axial flow type propeller type blowing fan 83 shown in FIG. 7 has higher blowing efficiency than the centrifugal line flow type blowing fan 53 shown in FIG.
  • the attachment part 84 of the blower fan 83 since the attachment part 84 of the blower fan 83 is installed in the air passage, the attachment part 84 impedes air flow, thereby deteriorating the efficiency and increasing the pressure loss.
  • the attachment part 84 of the blower fan 83 needs to have an elongated and irregular shape so as not to obstruct the air passage. If the attachment part 84 of the blower fan 83 is formed in such a long and narrow shape, the vibration of the motor becomes large, and the noise increases accordingly.
  • the advance angle control is performed based on the actual rotational speed of the rotor, so that the actual rotation of the rotor can be achieved without depending on the sudden change in the output voltage command or the voltage / current fluctuation caused by the sudden load fluctuation.
  • Motor drive control can be performed with the optimum phase according to the number of revolutions, and since sudden voltage fluctuations in the output voltage command are suppressed, sudden fluctuations in the output voltage are also suppressed, and output voltage control The difference between the rotational speed due to the actual motor rotational speed having a mechanical moment of inertia can be reduced. For this reason, generation
  • the efficiency of the equipment can be improved by using the axial flow type fan 83 having a high blowing efficiency, an extremely backward ferrite magnet that does not require a back yoke can be used as the rotor magnet.
  • a rare earth such as a rare earth magnet, and resources can be used effectively.
  • the drive circuit built-in motor 4 according to the present embodiment can reduce the motor current in a low rotation range as compared with a method in which the advance angle is fixed in advance according to the maximum rotation speed of the motor in advance. Therefore, in a 24-hour ventilation fan with a large proportion of low-speed operation, high-efficiency operation with reduced copper loss is possible.
  • FIG. 8 is a longitudinal sectional view of a pump motor with a built-in drive circuit according to the embodiment. 8 includes an impeller 71, a pump housing 72, and a cup 74 for preventing fluid from flowing into the printed circuit board 21 and the stator 8, and includes a rotor magnet 73 and a stator 8. A cup 74 is interposed between the two.
  • the motor drive circuit 3 according to the present embodiment is applied as the drive circuit of the pump motor 70 with a built-in drive circuit, even if a foreign matter is mixed inside and the shaft is locked, Since the advance angle control is performed based on the rotational speed, the mixed foreign matter can be discharged without losing the torque.
  • the motor drive circuit of the embodiment the motor with a built-in drive circuit and the pump motor with a built-in drive circuit, and the air conditioner, ventilator, heat pump water heater, and built-in cold / hot water circulation type equipped with them
  • the air conditioner as information on the rotational speed of the rotor, the frequency of the position detection signal detected by the Hall IC is converted into a voltage value corresponding to the actual rotational speed of the rotor, and the advance angle is determined based on this voltage value. Since the control is performed, the influence of high frequency noise generated by the switching of each switching element constituting the inverter circuit is suppressed, while the output voltage command is abruptly changed or the voltage / current fluctuation is caused by a sudden load fluctuation.
  • the motor drive control can be performed with an optimum phase corresponding to the actual number of rotations of the rotor without depending on it. Thereby, stable motor operation becomes possible, and it becomes possible to suppress abnormal overcurrent protection operation and generation of noise and noise.
  • the filter circuit removes the high-frequency noise of the output voltage command and suppresses the steep voltage fluctuation of the output voltage command, thereby suppressing the above-described influence of the high-frequency noise in the output voltage control by the output voltage command. And rapid fluctuations in output voltage are also suppressed, so the difference between the output voltage control speed and the actual motor speed with a mechanical moment of inertia can be reduced, enabling more stable motor operation. It becomes.
  • the effect of reducing the steady loss by the MOSFET can be effectively extracted, and a more efficient motor drive device can be obtained.
  • a MOSFET formed of a WBG semiconductor has a high voltage resistance and a high allowable current density, and thus can be miniaturized.
  • a power IC By configuring a power IC using these miniaturized MOSFETs, a power IC Can be reduced in size.
  • the MOSFET formed of the WBG semiconductor has high heat resistance, it is possible to simplify the cooling means of the power IC. Therefore, the motor driving circuit in which the power IC is mounted, and the driving circuit in which the power IC is incorporated The internal motor and the pump motor with a built-in drive circuit can be downsized.
  • the surface mounting type component that is likely to cause solder breakage due to stress is mounted on the stator side of the printed circuit board, and the through hole mounting type component is mounted on the opposite side of the printed circuit board, thereby reducing the soldering process of the printed circuit board. Only the solder flow process of the surface on the stator side on which the surface-mounted components are mounted can be performed, and the manufacturing cost of the motor drive circuit constituting the drive circuit built-in motor can be reduced. Furthermore, the surface on the stator side of this printed circuit board is placed facing the stator, and the motor drive circuit on the printed circuit board and the stator are electrically coupled and sealed with mold resin, thereby preventing thermal history. The life of the solder becomes longer, and the reliability of the motor with a built-in drive circuit can be improved.
  • each component constituting the motor drive unit is configured as a through-hole mounting type power IC sealed in the same package, and the main part of each component constituting the PWM signal generation unit is included in the same package.
  • the printed circuit board on which the motor drive circuit is mounted can be reduced in size.
  • the motor with a built-in drive circuit according to the present embodiment is suitable for application as a blower fan for an indoor unit of an air conditioner or a motor for driving a blower fan of an outdoor unit. Since the inertia moment of the rotor blades of these blower fans is larger than the inertia moment of the rotor, the change in the actual rotational speed of the rotor per unit time is smaller than the change in the rotational speed controlled by the output voltage command. There are many cases. For this reason, the effect by performing the advance angle control based on the actual rotational speed of the rotor by applying the motor with a built-in drive circuit according to the present embodiment is large, and a stable operation is possible.
  • blower fan of an air conditioner indoor unit has higher blowing efficiency than a centrifugal line flow fan, but the motor mounting parts must be elongated and deformed, resulting in vibration and noise. Even when an easy-flow axial-type propeller type blower fan is used, the occurrence of vibration during acceleration / deceleration can be suppressed, so the blowing efficiency can be reduced without causing discomfort due to noise or vibration to users in the room. High air conditioner can be obtained.
  • the rotor can be configured using extremely back-facing ferrite magnets that do not require a back yoke, and rare earths such as rare earth magnets can be used. Since there is no need to use the resource, resources can be used effectively.
  • the drive circuit built-in motor according to the present embodiment is applied to, for example, a ventilation fan, the same effect can be obtained, and in particular, a method of fixing the advance angle in advance according to the maximum rotational speed of the motor.
  • a highly efficient operation with reduced copper loss is possible in a 24-hour ventilation fan with a large proportion of low-speed operation.
  • the motor drive circuit according to the present embodiment is applied as a drive circuit for a pump motor with a built-in drive circuit, even if foreign matter enters inside and a shaft lock occurs, it is based on the actual rotational speed of the rotor. Therefore, the mixed foreign matter can be discharged without losing torque.
  • the advance angle control is performed based on the actual rotational speed of the rotor.
  • a method of performing the advance angle control using the detected value of the motor current is used together.
  • the advance angle control may be performed using the motor current detected by the shunt resistor 28 described in FIG. In this case, by reducing the control amount of the advance angle control according to the detected value of the motor current, for example, even when a sudden load fluctuation occurs, the advance angle control can be prevented from diverging. .
  • the filter circuit removes high-frequency noise of the output voltage command and suppresses a steep voltage fluctuation of the output voltage command. It has been described that it is suitable to be applied to a configuration using a MOSFET capable of switching or a MOSFET formed of a WBG semiconductor having a large rising slope dv / dt of switching and a large amount of noise generation.
  • the present invention is not limited to this, and it goes without saying that the same effect can be obtained even with, for example, a bipolar transistor or IGBT.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Inverter Devices (AREA)
PCT/JP2013/060486 2012-09-10 2013-04-05 Circuit de commande de moteur, moteur à circuit de commande incorporé et groupe électrogène à circuit de commande incorporé le logeant en son sein, climatiseur comportant un montage de ces éléments, ventilateur de ventilation, chauffe-eau à pompe à chaleur et climatiseur incorporé de type à circulation d'eau de refroidissement/chauffage Ceased WO2014038235A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201390000738.7U CN204721259U (zh) 2012-09-10 2013-04-05 驱动电路、电动机、泵电动机、空调机、换气扇和热水器
JP2014534211A JPWO2014038235A1 (ja) 2012-09-10 2013-04-05 モータ駆動回路、およびそれを内蔵した駆動回路内蔵モータならびに駆動回路内蔵ポンプモータ、およびそれらを搭載した空気調和機、換気扇、ヒートポンプ給湯機、ならびに内蔵冷温水循環式空調機

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Application Number Priority Date Filing Date Title
JP2012-198255 2012-09-10
JP2012198255 2012-09-10

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WO2014038235A1 true WO2014038235A1 (fr) 2014-03-13

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PCT/JP2013/060486 Ceased WO2014038235A1 (fr) 2012-09-10 2013-04-05 Circuit de commande de moteur, moteur à circuit de commande incorporé et groupe électrogène à circuit de commande incorporé le logeant en son sein, climatiseur comportant un montage de ces éléments, ventilateur de ventilation, chauffe-eau à pompe à chaleur et climatiseur incorporé de type à circulation d'eau de refroidissement/chauffage

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CN (1) CN204721259U (fr)
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JP6157770B1 (ja) * 2016-08-02 2017-07-05 三菱電機株式会社 サーボモータ制御装置
JP2023509624A (ja) * 2020-01-14 2023-03-09 インフィナイタム エレクトリック，インク． Ｐｃｂ固定子および可変周波数ドライブを有するアクシアルフィールド回転エネルギーデバイス

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JP6921752B2 (ja) * 2015-10-30 2021-08-18 三菱電機株式会社 電動機、送風機および空気調和機
JP6338750B1 (ja) 2017-03-03 2018-06-06 株式会社トーキン 装置
JP6800329B2 (ja) * 2017-06-13 2020-12-16 三菱電機株式会社 モータ駆動装置、電動送風機、電気掃除機及びハンドドライヤ
CN114094908B (zh) * 2020-08-24 2025-09-05 罗姆股份有限公司 电机转速限制模组、方法和电机装置
CN116691282B (zh) * 2023-08-01 2023-12-08 江苏日盈电子股份有限公司 一种基于互联网的汽车车载空调运行控制系统

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JP7692420B2 (ja) 2020-01-14 2025-06-13 インフィナイタム エレクトリック，インク． Ｐｃｂ固定子および可変周波数ドライブを有するアクシアルフィールド回転エネルギーデバイス

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