WO2022019038A1 - Circuit de commande pour convertisseur de puissance - Google Patents

Circuit de commande pour convertisseur de puissance Download PDF

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Publication number
WO2022019038A1
WO2022019038A1 PCT/JP2021/023708 JP2021023708W WO2022019038A1 WO 2022019038 A1 WO2022019038 A1 WO 2022019038A1 JP 2021023708 W JP2021023708 W JP 2021023708W WO 2022019038 A1 WO2022019038 A1 WO 2022019038A1
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WIPO (PCT)
Prior art keywords
voltage
circuit
control
short
switch
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PCT/JP2021/023708
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English (en)
Japanese (ja)
Inventor
耕平 永野
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株式会社デンソー
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Publication of WO2022019038A1 publication Critical patent/WO2022019038A1/fr

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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
    • H02M1/00—Details of apparatus for conversion
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • 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

Definitions

  • the present disclosure relates to a control circuit of a power converter having a switch of an upper and lower arm electrically connected to the winding of each phase of a rotary electric machine.
  • a control circuit of this type a control circuit of a power converter that performs short-circuit control in which a switch on one of the upper and lower arms is turned on and a switch on the other arm is turned off is known.
  • Patent Document 1 discloses a control circuit of a power converter provided with a three-phase short-circuit drive circuit for carrying out short-circuit control. In this control circuit, short-circuit control is performed based on the voltage signal input to the three-phase short-circuit drive circuit.
  • the voltage signal is input to the voltage terminal provided in the three-phase short-circuit drive circuit.
  • the control circuit may malfunction due to an abnormality in the voltage signal input to the voltage terminal.
  • This abnormality is caused by, for example, at least one of an abnormality of a voltage terminal, an abnormality of a source of a voltage signal, and an abnormality of a path from the source to the voltage terminal.
  • the following are examples of malfunctions of the control circuit caused by abnormal voltage signals.
  • the voltage signal input to the voltage terminal takes one of H and L values.
  • H the normal drive control in which the switches in the upper and lower arms are alternately turned on
  • L the short circuit control
  • the present disclosure has been made in view of the above circumstances, and its main purpose is to provide a control circuit of a power converter capable of suppressing the occurrence of a malfunction.
  • the present disclosure controls a power converter applied to a system comprising a polyphase rotary machine and a power converter having switches on the upper and lower arms electrically connected to the windings of each phase of the rotary machine.
  • information about the switch is transmitted to a determination unit for determining whether to perform short-circuit control for turning on the switch in one of the upper and lower arms and turning off the switch in the other arm. It has a plurality of voltage terminals to which a voltage signal is input, and it is determined that the short-circuit control is performed by the drive unit that drives the switch and the determination unit based on the voltage signal input via the voltage terminal.
  • the drive unit includes a signal transmission unit for inputting a short-circuit command to at least two voltage terminals of the respective voltage terminals, and the drive unit provides the short-circuit command to at least one of the voltage terminals. Is input, the short-circuit control is performed.
  • the drive unit has at least two voltage terminals into which a voltage signal is input. Further, in the present disclosure, when the determination unit determines that the short circuit control is to be performed, a short circuit command based on the voltage signal is input to each voltage terminal via the signal transmission unit, and a short circuit is made to at least one voltage terminal of each voltage terminal. When a command is input, the drive unit is configured to perform short-circuit control. Therefore, it is possible to suppress the occurrence of malfunction in the control circuit as compared with the case where the drive unit is provided with one voltage terminal. For example, even if one of the two voltage terminals to which the short-circuit command is input fails, the short-circuit control can be performed when the short-circuit command is input to the voltage terminals other than the failed voltage terminal.
  • FIG. 1 is an overall configuration diagram of a control system according to the first embodiment.
  • FIG. 2 is a diagram showing a control circuit and its peripheral configuration.
  • FIG. 3 is a diagram showing the upper and lower arm drivers and their peripheral configurations.
  • FIG. 4 is a diagram showing a signal transmission unit and its peripheral configuration.
  • FIG. 5 is a diagram for explaining a first voltage signal input to the first terminal.
  • FIG. 6 is a diagram for explaining a second voltage signal input to the second terminal.
  • FIG. 7 is a diagram for explaining a third voltage signal input to the third terminal.
  • FIG. 8 is a diagram for explaining a fourth voltage signal input to the fourth terminal.
  • FIG. 1 is an overall configuration diagram of a control system according to the first embodiment.
  • FIG. 2 is a diagram showing a control circuit and its peripheral configuration.
  • FIG. 3 is a diagram showing the upper and lower arm drivers and their peripheral configurations.
  • FIG. 4 is a diagram showing a signal transmission unit and its peripheral configuration.
  • FIG. 9 is a flowchart showing a control processing procedure performed by the control circuit.
  • FIG. 10 is a time chart showing an example of control performed by the control circuit.
  • FIG. 11 is a time chart showing an example of control performed by the control circuit.
  • FIG. 12 is a diagram showing a signal transmission unit and its peripheral configuration according to the second embodiment.
  • control circuit according to the present disclosure is embodied
  • the control circuit according to this embodiment is applied to a three-phase inverter as a power converter.
  • the control system including the inverter is mounted on a vehicle such as an electric vehicle or a hybrid vehicle.
  • the control system includes a rotary electric machine 10 and an inverter 15.
  • the rotary electric machine 10 is an in-vehicle main engine, and its rotor is capable of transmitting power to drive wheels (not shown).
  • a synchronous machine is used as the rotary electric machine 10, and more specifically, a permanent magnet synchronous machine is used.
  • the inverter 15 includes a switching device unit 16.
  • the switching device unit 16 includes a series connection body of the upper arm switch SWH and the lower arm switch SWL for three phases. In each phase, the first end of the winding 11 of the rotary electric machine 10 is connected to the connection points of the upper and lower arm switches SWH and SWL. The second end of each phase winding 11 is connected at a neutral point.
  • the phase windings 11 are arranged so as to be offset by 120 ° from each other by the electric angle.
  • a voltage-controlled semiconductor switching element is used as each switch SWH and SWL, and more specifically, an IGBT is used.
  • the upper and lower arm diodes DH and DL which are freewheel diodes, are connected in antiparallel to the upper and lower arm switches SWH and SWL.
  • the positive electrode terminal of the high voltage power supply 30 is connected to the collector, which is the high potential side terminal of each upper arm switch SWH, via the high potential side electric path 22H.
  • the negative electrode terminal of the high-voltage power supply 30 is connected to the emitter, which is the low-potential side terminal of each lower arm switch SWL, via the low-potential side electric path 22L.
  • the high voltage power supply 30 is a secondary battery, and its output voltage (rated voltage) is, for example, 100 V or more.
  • the high potential side electric path 22H is provided with a first cutoff switch 23a, and the low potential side electric path 22L is provided with a second cutoff switch 23b.
  • Each switch 23a, 23b is, for example, a relay or a semiconductor switching element.
  • the switches 23a and 23b may be driven by the control circuit 50 included in the inverter 15, or may be driven by a control device higher than the control circuit 50.
  • the inverter 15 includes a smoothing capacitor 24 as a "storage unit".
  • the smoothing capacitor 24 electrically connects the switching device section 16 side of the high potential side electric path 22H with respect to the first cutoff switch 23a and the switching device section 16 side of the low potential side electric path 22L with respect to the second cutoff switch 23b. Is connected.
  • the control system is equipped with an in-vehicle electric device 25.
  • the electrical device 25 includes, for example, at least one of an electric compressor and a DCDC converter.
  • the electric compressor constitutes an air conditioner in the vehicle interior and is driven by being supplied with power from a high-voltage power source 30 in order to circulate the refrigerant in the in-vehicle refrigeration cycle.
  • the DCDC converter steps down the output voltage of the high-voltage power supply 30 and supplies it to the vehicle-mounted low-voltage load.
  • the low voltage load includes the low voltage power supply 31 shown in FIG.
  • the low voltage power supply 31 is a secondary battery whose output voltage (rated voltage) is lower than the output voltage (rated voltage) of the high voltage power supply 30, for example, a lead storage battery.
  • the configuration of the control circuit 50 will be described with reference to FIG.
  • the control circuit 50 includes an input circuit 60 and a low voltage power supply circuit 61.
  • the positive electrode terminal of the low voltage power supply 31 is connected to the input circuit 60.
  • a ground as a grounding portion is connected to the negative electrode terminal of the low voltage power supply 31.
  • the low voltage power supply circuit 61 generates a second voltage V2 (for example, 5V) by stepping down the first voltage V1 output by the input circuit 60.
  • the control circuit 50 includes a microcomputer 62.
  • the microcomputer 62 includes a CPU and other peripheral circuits.
  • the peripheral circuit includes, for example, an input / output unit for exchanging signals with the outside and an AD conversion unit.
  • the second voltage V2 of the low voltage power supply circuit 61 is supplied to the microcomputer 62. As a result, the microcomputer 62 can be operated.
  • the microcomputer 62 generates a switching command for each switch SWH and SWL of the switching device unit 16 in order to control the control amount of the rotary electric machine 10 to the command value.
  • the control amount is, for example, torque.
  • the microcomputer 62 In order to control the control amount to the command value, the microcomputer 62 generates a switching command for performing normal drive control in which the upper arm switch SWH and the lower arm switch SWL are alternately turned on in each phase.
  • the control circuit 50 includes an isolated power supply 70, an upper arm driver 71, and a lower arm driver 72.
  • the upper arm driver 71 is individually provided corresponding to each upper arm switch SWH
  • the lower arm driver 72 is individually provided corresponding to each lower arm switch SWL. Therefore, a total of six drivers 71 and 72 are provided.
  • the isolated power supply 70 generates and outputs an upper arm drive voltage VdH supplied to the upper arm driver 71 and a lower arm drive voltage VdL supplied to the lower arm driver 72 based on the first voltage V1 of the input circuit 60. ..
  • the isolated power supply 70 and the drivers 71 and 72 are provided in the low voltage region and the high voltage region in the control circuit 50 across the boundary between the low voltage region and the high voltage region electrically isolated from the low voltage region.
  • the insulated power supply 70 includes an upper arm insulated power supply individually provided for each of the three-phase upper arm drivers 71 and a lower arm insulated power supply common to the three-phase lower arm drivers 72. There is.
  • the lower arm insulated power supply may be individually provided for each of the three-phase lower arm drivers 72.
  • the upper arm driver 71 includes an upper arm drive unit 71a as a "drive unit” and an upper arm insulation transmission unit 71b.
  • the upper arm drive unit 71a is provided in a high pressure region.
  • the upper arm insulation transmission portion 71b is provided in the low pressure region and the high pressure region across the boundary between the low pressure region and the high pressure region.
  • the upper arm insulation transmission unit 71b transmits a switching command output from the microcomputer 62 to the upper arm drive unit 71a while electrically insulating between the low voltage region and the high voltage region.
  • the upper arm insulation transmission unit 71b is, for example, a photocoupler or a magnetic coupler.
  • the configuration of the upper arm drive unit 71a and the upper arm insulation transmission unit 71b on the high voltage region side is configured to be operable by supplying the upper arm drive voltage VdH of the insulation power supply 70. ..
  • the configuration on the low voltage region side of the upper arm insulation transmission portion 71b and the like are configured to be operable by supplying the second voltage V2 of the low voltage power supply circuit 61.
  • the upper arm drive unit 71a supplies a charging current to the gate of the upper arm switch SWH when the input switching command is an on command. As a result, the gate voltage VgH of the upper arm switch SWH becomes equal to or higher than the threshold voltage Vth, and the upper arm switch SWH is turned on. On the other hand, when the input switching command is an off command, the upper arm drive unit 71a causes a discharge current to flow from the gate of the upper arm switch SWH to the emitter side. As a result, the gate voltage VgH of the upper arm switch SWH becomes less than the threshold voltage Vth, and the upper arm switch SWH is turned off.
  • the lower arm driver 72 includes a lower arm drive unit 72a as a "drive unit” and a lower arm insulation transmission unit 72b.
  • the configuration of the lower arm drive unit 72a and the lower arm insulation transmission unit 72b on the high voltage region side is configured to be operable by supplying the lower arm drive voltage VdL of the insulating power supply 70. ..
  • the configuration of the lower arm insulation transmission portion 72b on the low voltage region side and the like are configured to be operable by supplying the second voltage V2 of the low voltage power supply circuit 61.
  • the lower arm drive unit 72a supplies a charging current to the gate of the lower arm switch SWL when the input switching command is an on command. As a result, the gate voltage VgL of the lower arm switch SWL becomes equal to or higher than the threshold voltage Vth, and the lower arm switch SWL is turned on. On the other hand, when the input switching command is an off command, the lower arm drive unit 72a causes a discharge current to flow from the gate of the lower arm switch SWL to the emitter side. As a result, the gate voltage VgL of the lower arm switch SWL becomes less than the threshold voltage Vth, and the lower arm switch SWL is turned off.
  • the control circuit 50 includes an abnormality power supply 80 and a signal power supply 81.
  • the abnormal power supply 80 and the signal power supply 81 are provided in the high voltage region.
  • the abnormal power supply 80 generates the abnormal drive voltage Veps by supplying the output voltage VH of the smoothing capacitor 24.
  • the abnormal drive voltage Veps is supplied to the signal power supply 81.
  • the signal power supply 81 generates the ASC command voltage Vs by supplying the abnormal drive voltage Veps of the abnormal power supply 80.
  • the ASC command voltage Vs is a signal for transmitting to the lower arm drive unit 72a that ASC (Active Short Circuit) control is to be performed.
  • the ASC control is a control in which the lower arm switch SWL for three phases is turned on and the upper arm switch SWH for three phases is turned off.
  • the ASC command voltage Vs is set to a voltage lower than the lower arm drive voltage VdL (for example, 15V).
  • the abnormal power supply 80 corresponds to the "drive power supply”
  • the ASC control corresponds to the "short circuit control".
  • the control circuit 50 includes a normal power supply path 85, a normal diode 86, an abnormal power supply path 87, and an abnormal diode 88 in its high voltage region.
  • the normal power supply path 85 connects the output side of the isolated power supply 70 and the lower arm drive unit 72a, and supplies the lower arm drive voltage VdL to the lower arm drive unit 72a.
  • the normal diode 86 is provided at an intermediate position of the normal power supply path 85 with the anode connected to the output side of the isolated power supply 70.
  • the lower arm drive unit 72a side of the normal power supply path 86 and the collector of the abnormal switch 84 are connected by the abnormal power supply path 87.
  • the abnormality diode 88 is provided on the abnormality power supply path 87 with the anode connected to the collector of the abnormality switch 84.
  • the emitter of the abnormality switch 84 is connected to the output side of the abnormality power supply 80.
  • the abnormal drive voltage Veps of the abnormal power supply 80 is supplied to the lower arm drive unit 72a via the abnormal switch 84, the abnormal diode 88, the abnormal power supply path 87, and the normal power supply path 85.
  • the abnormal power supply 80 is configured to always start. Specifically, the abnormal power supply 80 is supplied with the output voltage VH of the smoothing capacitor 24, and after its own input voltage starts to rise, before the input voltage reaches the output voltage VH of the smoothing capacitor 24, Of these, it starts when the input voltage reaches the specified voltage. After that, the abnormal power supply 80 generates the abnormal drive voltage Veps.
  • starting the abnormal power supply 80 means that the abnormal power supply 80 starts to control the abnormal drive voltage Veps to a target value. When this control is started, the abnormal drive voltage Veps starts to rise toward the target value.
  • this state is defined as a state in which the abnormal power supply 80 is always activated.
  • various power supplies such as a switching power supply or a series power supply are used.
  • the control circuit 50 includes a determination unit 82, a signal transmission unit 83, and an abnormality switch 84 in the high voltage region thereof.
  • the lower arm drive voltage VdL of the isolated power supply 70 and the output voltage VH of the smoothing capacitor 24 are input to the determination unit 82.
  • the determination unit 82 determines whether or not to perform ASC control based on the lower arm drive voltage VdL of the isolated power supply 70 and the output voltage VH of the smoothing capacitor 24.
  • the determination unit 82 sets the output voltage level Vj of the determination unit 82 to H.
  • the determination unit 82 switches the output voltage level Vj of the determination unit 82 from H to L.
  • the determination unit 82 may determine that the ASC control is performed when the detected lower arm drive voltage VdL falls below the first ASC determination value Vp after the detected lower arm drive voltage VdL begins to decrease. ..
  • the first ASC determination value Vp is set to a value at which it can be determined that a sufficient period until the upper arm switch SWH is turned off has elapsed, and is, for example, the same value as the threshold voltage Vth or a value less than the threshold voltage Vth. It suffices if it is set.
  • the determination unit 82 may determine that the ASC control is performed when the detected output voltage VH of the smoothing capacitor 24 exceeds the second ASC determination value Vq.
  • the second ASC determination value Vq is set to a value at which it can be determined that the DC voltage of the high-voltage power supply 30 rises significantly and at least one of the high-voltage power supply 30, the inverter 15, and the electric device 25 may fail. It suffices if it has been done.
  • the ASC command voltage Vs of the signal power supply 81 is supplied to the signal transmission unit 83.
  • the lower arm driver 72 includes first to fourth terminals T1 to T4.
  • the ASC command voltage Vs is supplied to the first to fourth terminals T1 to T4 provided in the lower arm driver 72 via the signal transmission unit 83. Will be done.
  • the first to fourth terminals T1 to T4 and the signal transmission unit 83 will be described later.
  • the abnormality switch 84 is a PNP type bipolar transistor.
  • the base of the abnormality switch 84 is connected to the output side of the determination unit 82.
  • the abnormality switch 84 is turned on.
  • the lower arm driver 72 includes first to fourth terminals T1 to T4.
  • the inverter 15 includes a temperature detection unit 90 and a first signal transmission path 91.
  • the temperature detection unit 90 has a constant current source 90a and a temperature sensitive diode 90b.
  • the temperature sensitive diode 90b is a semiconductor temperature sensor that changes the forward voltage Vf based on the temperature of the lower arm switch SWL.
  • the anode of the temperature sensitive diode 90b is connected to the constant current source 90a, and the cathode of the temperature sensitive diode 90b is connected to the ground.
  • the first signal transmission path 91 connects the anode of the temperature sensitive diode 90b and the first terminal T1 via the signal transmission unit 83. As a result, the forward voltage Vf of the temperature sensitive diode 90b is transmitted to the first terminal T1.
  • the forward voltage Vf input to the first terminal T1 is transmitted to the lower arm drive unit 72a as the first voltage signal VT1.
  • the lower arm drive unit 72a determines, based on the first voltage signal VT1, a disconnection abnormality of the lower arm switch SWL and its peripheral configuration and an overheating abnormality of the lower arm switch SWL.
  • the inverter 15 includes a voltage detection circuit 92 and a second signal transmission path 93.
  • the voltage detection circuit 92 is connected to the gate of the lower arm switch SWL.
  • the voltage detection circuit 92 is provided so that the lower arm drive unit 72a can detect the gate voltage VgL of the lower arm switch SWL via the second terminal T2, and is composed of, for example, a resistance dividing resistor. ..
  • the second signal transmission path 93 connects the voltage detection circuit 92 and the second terminal T2 via the signal transmission unit 83.
  • the gate voltage VgL of the lower arm switch SWL is input to the voltage detection circuit 92.
  • the voltage detection circuit 92 outputs the monitoring voltage obtained by transforming (stepping down) the gate voltage VgL of the lower arm switch SWL to the second terminal T2.
  • the monitoring voltage input to the second terminal T2 is transmitted to the lower arm drive unit 72a as the second voltage signal VT2.
  • the lower arm drive unit 72a performs an off holding process based on the second voltage signal VT2.
  • This process is a process of short-circuiting the gate and emitter of the lower arm switch SWL when the switching command input to the lower arm drive unit 72a is an off command in order to prevent the occurrence of self-turn-on of the lower arm switch SWL.
  • Self-turn-on is a phenomenon in which a switch is accidentally turned on even though you want to keep the switch off.
  • the inverter 15 includes a sense resistor 94 and a third signal transmission path 95.
  • the lower arm switch SWL includes a sense terminal St. A minute current having a correlation with the emitter current of the lower arm switch SWL flows through the sense terminal St.
  • the first end of the sense resistor 94 is connected to the sense terminal St, and the ground is connected to the second end of the sense resistor 94.
  • the third signal transmission path 95 connects the first end of the sense resistor 94 and the third terminal T3 via the signal transmission unit 83.
  • sense voltage Vse the voltage difference of the sense resistor 94 (hereinafter, sense voltage Vse) can be used as the correlation value of the emitter current.
  • This sense voltage Vse is input to the third terminal T3.
  • the sense voltage Vse input to the third terminal T3 is transmitted to the lower arm drive unit 72a as the third voltage signal VT3.
  • the lower arm drive unit 72a determines an overcurrent abnormality or a short circuit abnormality of the lower arm switch SWL based on the third voltage signal VT3.
  • the short circuit abnormality is caused by, for example, a vertical arm short circuit, a correlated short circuit, or a ground fault.
  • the signal transmission unit 83 includes a first resistor 96, a first capacitor 97, and a first command switch 98.
  • the first command switch 98 is a PNP type bipolar transistor.
  • the first end of the first resistor 96 is connected to the output side of the determination unit 82.
  • the second end of the first resistor 96 is connected to the base of the first command switch 98 and the first end of the first capacitor 97.
  • the second end of the first capacitor 97 is connected to ground.
  • the emitter of the first command switch 98 is connected to the output side of the signal power supply 81.
  • the collector of the first command switch 98 is connected to the first terminal T1 via the first signal transmission path 91.
  • the output voltage level Vj of the determination unit 82 is H, and the first command switch 98 is turned off. Therefore, the forward voltage Vf of the temperature sensitive diode 90b is input to the first terminal T1.
  • the output voltage level Vj of the determination unit 82 is switched to L, and the first command switch 98 is switched on.
  • the ASC command voltage Vs of the signal power supply 81 is input to the first terminal T1.
  • the first terminal T1 transmits the forward voltage Vf or the ASC command voltage Vs to the lower arm drive unit 72a.
  • the ASC command voltage Vs corresponds to the "short circuit command".
  • the signal transmission unit 83 includes a second resistor 99, a second capacitor 100, and a second command switch 101.
  • the second command switch 101 is a PNP type bipolar transistor.
  • the first end of the second resistor 99 is connected to the output side of the determination unit 82.
  • the second end of the second resistor 99 is connected to the base of the second command switch 101 and the first end of the second capacitor 100.
  • the second end of the second capacitor 100 is connected to ground.
  • the emitter of the second command switch 101 is connected to the signal power supply 81.
  • the collector of the second command switch 101 is connected to the second terminal T2 via the second signal transmission path 93.
  • the output voltage level Vj of the determination unit 82 is H, and the second command switch 101 is turned off. Therefore, the monitoring voltage of the voltage detection circuit 92 is input to the second terminal T2.
  • the output voltage level Vj of the determination unit 82 is switched to L, and the second command switch 101 is switched on. As a result, the ASC command voltage Vs of the signal power supply 81 is input to the second terminal T2.
  • the second terminal T2 transmits the monitoring voltage or the ASC command voltage Vs to the lower arm drive unit 72a.
  • the signal transmission unit 83 includes a third resistor 102, a third capacitor 103, and a third command switch 104.
  • the third command switch 104 is a PNP type bipolar transistor.
  • the first end of the third resistor 102 is connected to the output side of the determination unit 82.
  • the second end of the third resistor 102 is connected to the base of the third command switch 104 and the first end of the third capacitor 103.
  • the second end of the third capacitor 103 is connected to ground.
  • the emitter of the third command switch 104 is connected to the signal power supply 81.
  • the collector of the third command switch 104 is connected to the third terminal T3 via the third signal transmission path 95.
  • the output voltage level Vj of the determination unit 82 is H, and the third command switch 104 is turned off. Therefore, the sense voltage Vse is input to the third terminal T3.
  • the output voltage level Vj of the determination unit 82 is switched to L, and the third command switch 104 is switched on. As a result, the ASC command voltage Vs of the signal power supply 81 is input to the third terminal T3.
  • the third terminal T3 transmits the sense voltage Vse or the ASC command voltage Vs to the lower arm drive unit 72a.
  • the signal transmission unit 83 includes a fourth resistor 105, a fourth capacitor 106, a fourth command switch 107, a first voltage dividing resistor 108, and a second voltage dividing resistor 109.
  • the fourth command switch 107 is a PNP type bipolar transistor.
  • the first end of the fourth resistor 105 is connected to the output side of the determination unit 82.
  • the second end of the fourth resistor 105 is connected to the base of the fourth command switch 107 and the first end of the fourth capacitor 106.
  • the second end of the fourth capacitor 106 is connected to ground.
  • the emitter of the fourth command switch 107 is connected to the first end of the signal power supply 81 and the first voltage dividing resistor 108.
  • the second end of the first voltage dividing resistor 108 is connected to the collector of the fourth command switch 107, the first end of the second voltage dividing resistor 109, and the fourth terminal T4.
  • the second end of the second voltage dividing resistor 109 is connected to the ground.
  • the output voltage level Vj of the determination unit 82 is H, and the fourth command switch 107 is turned off. Therefore, the ASC command voltage Vs of the signal power supply 81 is divided by the first and second voltage dividing resistors 108 and 109, and the divided voltage is input to the fourth terminal T4.
  • the fourth terminal T4 transmits the voltage dividing voltage to the lower arm drive unit 72a.
  • the lower arm drive unit 72a sets a protection threshold value such as an overcurrent threshold value Voc and a short circuit threshold value Vsc based on the voltage dividing voltage.
  • the output voltage level Vj of the determination unit 82 is switched to L, and the fourth command switch 107 is switched on.
  • the ASC command voltage Vs is input to the fourth terminal T4 via the fourth command switch 107.
  • the fourth terminal T4 transmits the voltage dividing voltage or the ASC command voltage Vs to the lower arm drive unit 72a.
  • the first voltage signal VT1 input to the first terminal T1 will be described with reference to FIG.
  • the voltage range that the first voltage signal VT1 can take is the voltage range from 0V to the first maximum voltage VT1a.
  • 0V is the potential of the emitter of the lower arm switch SWL.
  • the first maximum voltage VT1a is the ASC command voltage Vs (for example, 5V).
  • Vs for example, 5V.
  • the superheat threshold value Vh and the disconnection threshold value Vd higher than the superheat threshold value Vh are set. When the first voltage signal VT1 falls below the superheat threshold value Vh, it is determined that a superheat abnormality has occurred in the lower arm switch SWL.
  • the lower arm drive unit 72a when the first voltage signal VT1 exceeds the disconnection threshold value Vd, it is determined that the lower arm drive unit 72a has caused a disconnection abnormality in the lower arm switch SWL or its peripheral configuration.
  • the lower arm drive unit 72a performs a protective operation.
  • a protective operation for example, the lower arm drive unit 72a performs a shutdown control to turn off the lower arm switch SWL.
  • the upper arm drive unit 71a also performs shutdown control when it is determined that a disconnection abnormality or an overheating abnormality has occurred in the upper arm switch SWH.
  • the temperature detection range RT1a that can be detected by the temperature sensitive diode 90b is set in a voltage range that is higher than the overheat threshold value Vh and lower than the disconnection threshold value Vd.
  • the upper and lower limits of the temperature detection range RT1a are set based on the temperature at which the reliability of the temperature detection target of the temperature sensitive diode 90b can be maintained.
  • the temperature detection range RT1a corresponds to the "first voltage range".
  • the first predetermined voltage VT1b is set as a voltage lower than the superheat threshold value Vh and higher than 0V.
  • the voltage range from the first predetermined voltage VT1b to the superheat threshold value Vh is the superheat abnormality range RT1h.
  • the second predetermined voltage VT1c is set as a voltage higher than the disconnection threshold value Vd and lower than the first maximum voltage VT1a.
  • the second predetermined voltage VT1c is, for example, a voltage value that is not detected even if a disconnection abnormality occurs in the lower arm switch SWL or its peripheral configuration.
  • the voltage range from the disconnection threshold value Vd to the second predetermined voltage VT1c is the disconnection abnormality range RT1d.
  • the overheat abnormality range RT1h and the disconnection abnormality range RT1d correspond to the "first voltage range”.
  • the voltage range from 0V to the first predetermined voltage VT1b is defined as the low voltage side ASC range RT1bL.
  • the voltage range from the second predetermined voltage VT1c to the first maximum voltage VT1a is defined as the high voltage side ASC range RT1bH.
  • the first ASC threshold value Vasc1 is set in the high voltage side ASC range RT1bH, and specifically, the first ASC threshold value Vasc1 is set to the second predetermined voltage VT1c which is the lower limit value of the high voltage side ASC range RT1b.
  • the ASC command When the first voltage signal VT1 input to the lower arm drive unit 72a via the first terminal T1 becomes equal to or higher than the first ASC threshold value Vasc1, a signal indicating that ASC control is performed (hereinafter, ASC command) is driven by the lower arm. It is transmitted to the portion 72a.
  • ASC threshold value Vasc1 By setting the first ASC threshold value Vasc1 within the voltage range below the median of the high voltage side ASC range RT1bH, the ASC command can be quickly transmitted to the lower arm drive unit 72a. This is because the voltage range below the median is close to the temperature detection range RT1a.
  • the high voltage side ASC range RT1bH corresponds to the "second voltage range”
  • the ASC command corresponds to the "short circuit command".
  • the second voltage signal VT2 input to the second terminal T2 will be described with reference to FIG.
  • the voltage range that the second voltage signal VT2 can take is the voltage range from 0V to the second maximum voltage VT2a.
  • the second maximum voltage VT2a is the ASC command voltage Vs.
  • the second ASC threshold Vasc2 is set within the voltage range from 0V to the second maximum voltage VT2a.
  • the second ASC threshold value Vasc2 is set based on, for example, an upper limit value in a range that the gate voltage VgL of the lower arm switch SWL can take.
  • the voltage range from 0V to the second ASC threshold value Vasc2 is defined as the monitoring range RT2a.
  • the monitoring range RT2a corresponds to the "first voltage range”.
  • the voltage range from the second ASC threshold value Vasc2 to the second maximum voltage VT2a is the second ASC range RT2b.
  • the second ASC range RT2b corresponds to the "second voltage range”.
  • the third voltage signal VT3 input to the third terminal T3 will be described with reference to FIG. 7.
  • the voltage range that the third voltage signal VT3 can take is the voltage range from 0V to the third maximum voltage VT3a.
  • the third maximum voltage VT3a is the ASC command voltage Vs.
  • an overcurrent threshold Voc and a short-circuit threshold Vsc higher than the overcurrent threshold Voc are set.
  • the third voltage signal VT3 is higher than the overcurrent threshold Voc and lower than the short-circuit threshold Vsc, it is determined that the lower arm drive unit 72a has generated an overcurrent abnormality.
  • the lower arm drive unit 72a when the third voltage signal VT3 has a voltage higher than the short-circuit threshold value Vsc, it is determined that the short-circuit abnormality has occurred by the lower arm drive unit 72a. When it is determined that an overcurrent abnormality or a short-circuit abnormality has occurred, the lower arm drive unit 72a performs a protective operation. As a protective operation, for example, the lower arm drive unit 72a performs shutdown control.
  • the third ASC threshold Vasc3 is set as a voltage higher than the short circuit threshold Vsc.
  • the third ASC threshold value Vasc3 is set, for example, based on the upper limit of the range that the sense voltage Vse can take.
  • the voltage range from 0V to the third ASC threshold value Vasc3 is defined as the overcurrent range RT3a.
  • the overcurrent range RT3a corresponds to the "first voltage range”.
  • the voltage range from the third ASC threshold value Vasc3 to the third maximum voltage VT3a is defined as the third ASC range RT3b.
  • the third ASC range RT3b corresponds to the "second voltage range”.
  • the fourth voltage signal VT4 input to the fourth terminal T4 will be described with reference to FIG.
  • the voltage range that the fourth voltage signal VT4 can take is the voltage range from 0V to the fourth maximum voltage VT4a.
  • the fourth maximum voltage VT4a is the ASC command voltage Vs.
  • the 4th ASC threshold Vasc4 is set in the voltage range from 0V to the 4th maximum voltage VT4a.
  • the voltage range from 0V to the 4th ASC threshold value Vasc4 is defined as the threshold value setting range RT4a.
  • the threshold setting range RT4a corresponds to the "first voltage range".
  • the voltage range from the fourth ASC threshold value Vasc4 to the fourth maximum voltage VT4a is the fourth ASC range RT4b.
  • the 4th ASC range RT4b corresponds to the "second voltage range”.
  • control performed by the control circuit 50 will be described with reference to FIG. This control is repeatedly performed at a predetermined cycle.
  • step S10 the determination unit 82 determines whether the lower arm drive voltage VdL is lower than the first ASC determination value Vp, or whether the output voltage VH of the smoothing capacitor 24 is higher than the second ASC determination value Vq. ..
  • step S10 the process proceeds to step S11, and the lower arm drive unit 72a performs normal drive control or protection operation. Specifically, the lower arm drive unit 72a determines that the first voltage signal VT1 input to the first terminal T1 is below the superheat threshold value Vh and an overheat abnormality has occurred, or exceeds the disconnection threshold value Vd. If it is determined that a disconnection error has occurred, shutdown control is performed as a protective operation. Further, when the lower arm drive unit 72a determines that the third voltage signal VT3 input to the third terminal T3 exceeds the overcurrent threshold value Voc or the short circuit threshold value Vsc, the lower arm drive unit 72a performs shutdown control as a protection operation. When it is determined that an overheat abnormality, a disconnection abnormality, or an abnormality based on the overcurrent threshold value Voc or the short-circuit threshold value Vsc has not occurred, the lower arm drive unit 72a performs normal drive control.
  • step S10 determines whether an affirmative determination is made in step S10 or not. If an affirmative determination is made in step S10, the process proceeds to step S12, and the determination unit 82 switches the output voltage level Vj to L. As a result, the abnormality switch 84 and the first to fourth command switches 98, 101, 104, 107 are switched on. As a result, the abnormal drive voltage Veps is supplied to the lower arm drive unit 72a from the abnormal power supply 80. Further, ASC command voltage Vs is input to the first to fourth terminals T1 to T4.
  • step S13 the lower arm drive unit 72a determines whether the voltage signals VT1 to VT4 input to the terminals T1 to T4 are equal to or higher than the ASC thresholds Vasc1 to Vasc4. If the voltage signal input to the terminal at any of the terminals T1 to T4 is not equal to or higher than the corresponding ASC threshold value, the process proceeds to step S11. On the other hand, when all the first to fourth voltage signals VT1 to VT4 input to the first to fourth terminals T1 to T4 are equal to or higher than the first to fourth ASC thresholds Vasc1 to Vasc4, the process proceeds to step S14 and the lower arm is driven. Unit 72a performs ASC control.
  • the ASC control is performed with priority over the normal drive control or the protection operation. Specifically, even if the lower arm drive unit 72a performs the normal drive control or the protection operation in step S11, the lower arm drive unit 72a performs ASC control when proceeding to step S14 in the next control cycle.
  • control circuit 50 The control performed by the control circuit 50 will be described in more detail with reference to FIGS. 10 and 11.
  • FIG. 10 is an example of control performed by the control circuit 50 when a low voltage abnormality occurs and the lower arm drive voltage VdL drops to 0V.
  • the low voltage abnormality includes an abnormality of the low voltage power supply 31 and an abnormality in which the voltage cannot be output from the isolated power supply 70.
  • the abnormality in which the voltage cannot be output from the isolated power supply 70 includes an abnormality in the insulated power supply 70 and an abnormality in which the low voltage power supply 31 cannot supply power to the insulated power supply 70.
  • the abnormality that the low voltage power supply 31 cannot supply power to the isolated power supply 70 occurs, for example, when the input circuit 60, the electric path from the low voltage power supply 31 to the isolated power supply 70 is disconnected.
  • the above-mentioned abnormality occurs, for example, due to a vehicle collision.
  • FIG. 10 shows the transition of the lower arm drive voltage VdL
  • (b) shows the transition of the output voltage level Vj
  • (c) shows the transition of each voltage signal VT1 to VT4
  • (d) shows the transition.
  • the transition of the gate voltage VgH of the upper arm switch SWH is shown
  • (e) shows the transition of the gate voltage VgL of the lower arm switch SWL.
  • FIG. 10C for convenience, the transition of each voltage signal VT1 to VT4 is shown collectively in one time chart.
  • the lower arm drive voltage VdL is lower than the first ASC determination value Vp.
  • the output voltage level Vj is switched from H to L.
  • the abnormality switch 84 and the command switches 98, 101, 104, 107 are switched on.
  • the abnormal drive voltage Veps of the abnormal power supply 80 is supplied to the lower arm drive unit 72a, and the lower arm drive unit 72a is in a state where ASC control can be executed.
  • the ASC command voltage Vs is input to the terminals T1 to T4, the voltage signals VT1 to VT4 start to rise.
  • the first to fourth voltage signals VT1 to VT4 exceed the first to fourth ASC thresholds Vasc1 to Vasc4.
  • the ASC command is transmitted from the terminals T1 to T4 to the lower arm drive unit 72a.
  • the lower arm drive unit 72a receives the ASC command from the first to fourth terminals T1 to T4
  • the lower arm drive unit 72a issues the last ASC command among the times when the ASC command of the first to fourth terminals T1 to T4 is received.
  • the ASC control is started at the time t3 when the filter time td has elapsed from the received time t2. Therefore, the gate voltage VgL of the lower arm switch SWL starts to rise.
  • the gate voltage VgH of the upper arm switch SWH begins to decrease, and is turned off at a time between time t2 and time t3.
  • the filter time td is provided to secure a sufficient period until the upper arm switch SWH is turned off. This is to prevent the occurrence of a short circuit between the upper and lower arms.
  • ASC control is performed when the gate voltage VgL of the lower arm switch SWL exceeds the threshold voltage Vth.
  • FIG. 11 is an example of control performed by the control circuit 50 when an overvoltage abnormality occurs in which the output voltage VH of the smoothing capacitor 24 exceeds the second ASC determination value Vq.
  • the overvoltage abnormality is generated by, for example, determining that an abnormality has occurred in the rotary electric machine 10 or the like and performing shutdown control. Specifically, when shutdown control is performed, when a counter electromotive voltage is generated in the winding 11 due to the rotation of the rotor constituting the rotary electric machine 10, the line voltage of the winding 11 is changed to that of the smoothing capacitor 24.
  • the output voltage may be higher than VH.
  • the situation where the line voltage is high can occur, for example, when the amount of field magnetic flux of the rotor is large or the rotation speed of the rotor is high.
  • the induced current generated in the winding 11 flows through the closed circuit including the upper and lower arm diodes DH, DL, the winding 11 and the smoothing capacitor 24 connected in antiparallel to the upper and lower arm switches SWH and SWL. Regeneration is carried out. As a result, the output voltage VH of the smoothing capacitor 24 rises beyond the second ASC determination value Vq, resulting in an overvoltage abnormality.
  • FIG. 11 shows the transition of the output voltage VH of the smoothing capacitor 24, and (b) to (e) correspond to the above FIGS. 10 (b) to (e).
  • the lower arm driver 72 has first to fourth terminals T1 to T4.
  • the ASC command is transmitted to the lower arm drive unit 72a based on the first to fourth voltage signals VT1 to VT4 input to the first to fourth terminals T1 to T4.
  • the lower arm drive unit 72a receives an ASC command from all of the first to fourth terminals T1 to T4, the lower arm drive unit 72a performs ASC control. Therefore, as compared with the configuration in which the lower arm driver 72 is provided with one terminal for receiving the ASC command, it is possible to suppress the occurrence of malfunction in the control circuit 50.
  • the ASC command is output from at least one of the plurality of terminals T1 to T4 due to an abnormality in at least one terminal of each voltage signal VT1 to VT4. It may not be done.
  • the lower arm drive unit 72a performs ASC control only when ASC commands are received from all the terminals T1 to T4, and does not perform ASC control in other cases, and performs normal drive control or protection operation. It was configured to be implemented. This makes it possible to prevent ASC control from being erroneously performed in a situation where an abnormality may have occurred in the control circuit 50.
  • the number of terminals provided in the lower arm driver 72 increases.
  • the voltage range of each voltage signal VT1 to VT4 input to each terminal T1 to T4 is set as follows. Specifically, the voltage range of the first voltage signal VT1 is provided with a temperature detection range RT1a, an overheat abnormality range RT1h, a disconnection abnormality range RT1d, and each ASC range RT1bH, RT1bL. In the voltage range of the second voltage signal VT2, a monitoring range RT2a and a second ASC range RT2b are provided. The third voltage signal VT3 is provided with an overcurrent range RT3a and a third ASC range RT3b.
  • the fourth voltage signal VT4 is provided with a threshold setting range RT4a and a fourth ASC range RT4b.
  • the forward voltage Vf or the ASC command voltage Vs of the temperature sensitive diode 90b is input to the common first terminal T1 to the first terminal T1.
  • a monitoring voltage based on the gate voltage VgL of the lower arm switch SWL or an ASC command voltage Vs is input to the second terminal T2 in common to the second terminal T2.
  • a sense voltage Vse or an ASC command voltage Vs is input to the common third terminal T3 at the third terminal T3.
  • a voltage dividing voltage or an ASC command voltage Vs for determining a protection threshold is input to the common fourth terminal T4 at the fourth terminal T4. Therefore, the number of terminals provided in the lower arm driver 72 can be reduced as compared with the case where a plurality of dedicated terminals for transmitting only the ASC command are provided.
  • the lower arm drive unit 72a, the first to fourth terminals T1 to T4, the high voltage power supply 30, and the abnormal power supply 80, which are configured to carry out ASC control, are provided in a high voltage region electrically isolated from the low voltage region. It was made into a configuration that can be used. Therefore, even if a low voltage abnormality occurs, ASC control can be performed.
  • the abnormal power supply 80 was always started. As a result, after the abnormal power supply 80 is started, the ASC command voltage Vs is always supplied to the signal transmission unit 83. Therefore, the ASC command voltage Vs can be supplied to the signal transmission unit 83 at an earlier stage as compared with the case where the abnormal power supply 80 is started after the determination unit 82 determines that the ASC control is to be performed. As a result, ASC control can be carried out quickly.
  • the lower arm driver 72 includes a fifth terminal T5.
  • the fifth terminal T5 is a dedicated terminal that transmits only the ASC command to the lower arm drive unit 72a.
  • the fifth terminal T5 is connected to the output side of the determination unit 82 via the signal transmission unit 83.
  • the signal transmission unit 83 includes a fifth resistor 110, a fifth capacitor 111, and a fifth command switch 112.
  • the fifth command switch 112 is a PNP type bipolar transistor.
  • the first end of the fifth resistor 110 is connected to the output side of the determination unit 82.
  • the second end of the fifth resistor 110 is connected to the base of the fifth command switch 112 and the first end of the fifth capacitor 111.
  • the second end of the fifth capacitor 111 is connected to ground.
  • the emitter of the fifth command switch 112 is connected to the signal power supply 81.
  • the collector of the fifth command switch 112 is connected to the fifth terminal T5.
  • the fifth voltage signal VT5 is input to the fifth terminal T5.
  • the fifth ASC threshold value Vasc5 is set in the voltage range that the fifth voltage signal VT5 can take. Before it is determined that the ASC control is to be performed, the output voltage level Vj of the determination unit 82 is H, and the fifth command switch 112 is turned off. Therefore, a voltage lower than the 5th ASC threshold value Vasc5 is input to the 5th terminal T5. Therefore, the ASC command is not transmitted to the lower arm drive unit 72a. On the other hand, when it is determined that the ASC control is to be performed, the output voltage level Vj of the determination unit 82 is switched to L, and the fifth command switch 112 is switched on.
  • the ASC command voltage Vs of the signal power supply 81 is input to the fifth terminal T5, so that a voltage higher than the fifth ASC threshold Vasc5 is input to the fifth terminal T5.
  • the ASC command is transmitted to the lower arm drive unit 72a.
  • the lower arm drive unit 72a determines whether the voltage signals VT1 to VT5 input to the terminals T1 to T5 are equal to or higher than the ASC thresholds Vasc1 to Vasc5. .. If the voltage signal input to the terminal at any of the terminals T1 to T5 is not equal to or higher than the corresponding ASC threshold value, the process proceeds to step S11. On the other hand, the lower arm drive unit 72a is a step when all the first to fifth voltage signals VT1 to VT5 input to the first to fifth terminals T1 to T5 are equal to or higher than the first to fifth ASC thresholds Vasc1 to Vasc5. Proceed to S14 and perform ASC control.
  • control may be performed to switch the upper arm switch SWH for three phases to the on state and to switch the lower arm switch SWL for three phases to the off state.
  • step S13 of the first embodiment if all the first to fourth voltage signals VT1 to VT4 input to the first to fourth terminals T1 to T4 are equal to or higher than the ASC thresholds Vasc1 to Vasc4, the process proceeds to step S14. But change this. In step S13, any one, two, or three voltage signals of the first to fourth voltage signals VT1 to VT4 input to the first to fourth terminals T1 to T4 are equal to or higher than the corresponding ASC threshold value. In some cases, the process may proceed to step S14.
  • the first to fourth maximum voltages VT1a to VT4a are set to the ASC command voltage Vs, but this is changed to be higher than the ASC command voltage Vs and the lower arm drive voltage VdL. It may have the following values.
  • the first to fourth ASC ranges RT1b to RT4b are voltage ranges from the ASC command voltage Vs to the lower arm drive voltage VdL at the terminals T1 to T4.
  • ASC control is performed by inputting a voltage higher than the ASC command voltage Vs to each terminal T1 to T4.
  • the first to fourth ASC thresholds Vasc1 to Vasc4 may be set to the ASC command voltage Vs.
  • the first ASC threshold value Vasc1 may be set in the low voltage side ASC range RT1bL (corresponding to the "second voltage range") instead of the high voltage side ASC range RT1bH.
  • the first ASC threshold value Vasc1 may be set to the first predetermined voltage VT1b, which is the lower limit value of the low voltage side ASC range RT1bL.
  • the control circuit 50 is configured so that the ASC control is performed when the first voltage signal VT1 is lower than the first ASC threshold value Vasc1.
  • the ASC command voltage Vs was input to the first to fourth terminals T1 to T4, but this is changed and the ASC command is sent to any one of the first to fourth terminals T1 to T4. Voltage Vs may be input.
  • ASC control is performed by inputting the ASC command voltage Vs to the first terminal T1. As a result, the number of terminals provided on the lower arm driver 72 can be reduced.
  • control circuit 50 is such that the ASC control is performed by the fifth voltage signal VT5 falling below the fifth ASC threshold Vasc5 instead of the fifth voltage signal VT5 exceeding the fifth ASC threshold Vasc5. May be configured.
  • the switches SWH and SWL constituting the switching device unit 16 are not limited to IGBTs, and may be, for example, N-channel MOSFETs having a built-in body diode.
  • the control amount of the rotary electric machine 10 is not limited to the torque, but may be, for example, the rotation speed of the rotor of the rotary electric machine 10.
  • the rotary electric machine 10 is not limited to the permanent magnet synchronous machine, but may be, for example, a winding field type synchronous machine. Further, the rotary electric machine 10 is not limited to the synchronous machine, and may be, for example, an induction machine. Further, the rotary electric machine 10 is not limited to the one used as an in-vehicle main engine, but may be used for other purposes such as an electric power steering device and an electric motor constituting an electric compressor for air conditioning.
  • the controls and methods thereof described in the present disclosure are provided by a dedicated computer provided by configuring a processor and memory programmed to perform one or more functions embodied by a computer program. It may be realized. Alternatively, the controls and methods thereof described in the present disclosure may be implemented by a dedicated computer provided by configuring the processor with one or more dedicated hardware logic circuits. Alternatively, the control unit and method thereof described in the present disclosure may be a combination of a processor and memory programmed to perform one or more functions and a processor configured by one or more hardware logic circuits. It may be realized by one or more dedicated computers configured. Further, the computer program may be stored in a computer-readable non-transitional tangible recording medium as an instruction executed by the computer.

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

Abstract

Circuit de commande (50) appliqué à un système pourvu : d'une machine électrique rotative à phases multiples (10) ; et d'un convertisseur de puissance (15) comprenant les commutateurs (SWH, SWL) de bras supérieur et inférieur qui sont électriquement connectés à l'enroulement de chaque phase de la machine électrique rotative. Le circuit de commande comprend : une unité de détermination (82) pour déterminer s'il faut ou non effectuer une commande de court-circuit dans laquelle le commutateur de l'un quelconque des bras supérieur et inférieur est mis sous tension et le commutateur de l'autre bras est mis hors tension ; une unité d'entraînement (71a, 72a) ayant une pluralité de bornes de tension (T1 à T4) dans laquelle un signal de tension destiné à transmettre des informations concernant les commutateurs est entré et entraînant les commutateurs sur la base de l'entrée de signal de tension par le biais des bornes de tension ; et une unité de transmission de signal (83) qui, lorsqu'il est déterminé par l'unité de détermination que la commande de court-circuit est effectuée, entre une instruction de court-circuit dans au moins deux bornes de tension des bornes de tension respectives. L'unité d'entraînement effectue la commande de court-circuit lorsque l'intrusction de court-circuit est entrée dans au moins une borne de tension des bornes de tension respectives.
PCT/JP2021/023708 2020-07-21 2021-06-23 Circuit de commande pour convertisseur de puissance WO2022019038A1 (fr)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004341690A (ja) * 2003-05-14 2004-12-02 Idec Izumi Corp 操作盤
JP2007335434A (ja) * 2006-06-12 2007-12-27 Nec Corp フレキシブル配線基板、回路基板およびフレキシブル配線断線時の修復方法
WO2014068752A1 (fr) * 2012-11-01 2014-05-08 三菱電機株式会社 Dispositif de conversion de puissance et procédé pour diagnostiquer une défaillance du dispositif
JP5813167B2 (ja) * 2014-04-01 2015-11-17 三菱電機株式会社 インバータのフェールセーフ装置
JP6305605B1 (ja) * 2017-05-22 2018-04-04 三菱電機株式会社 モータ制御装置
JP2019097305A (ja) * 2017-11-22 2019-06-20 三菱電機株式会社 電力半導体モジュールおよび電力変換装置
JP2019128638A (ja) * 2018-01-22 2019-08-01 株式会社日立ハイテクソリューションズ 二重化制御システム
WO2019170035A1 (fr) * 2018-03-08 2019-09-12 精进电动科技股份有限公司 Circuit d'attaque de transistor bipolaire à porte isolée pour contrôleur de moteur et contrôleur de moteur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004341690A (ja) * 2003-05-14 2004-12-02 Idec Izumi Corp 操作盤
JP2007335434A (ja) * 2006-06-12 2007-12-27 Nec Corp フレキシブル配線基板、回路基板およびフレキシブル配線断線時の修復方法
WO2014068752A1 (fr) * 2012-11-01 2014-05-08 三菱電機株式会社 Dispositif de conversion de puissance et procédé pour diagnostiquer une défaillance du dispositif
JP5813167B2 (ja) * 2014-04-01 2015-11-17 三菱電機株式会社 インバータのフェールセーフ装置
JP6305605B1 (ja) * 2017-05-22 2018-04-04 三菱電機株式会社 モータ制御装置
JP2019097305A (ja) * 2017-11-22 2019-06-20 三菱電機株式会社 電力半導体モジュールおよび電力変換装置
JP2019128638A (ja) * 2018-01-22 2019-08-01 株式会社日立ハイテクソリューションズ 二重化制御システム
WO2019170035A1 (fr) * 2018-03-08 2019-09-12 精进电动科技股份有限公司 Circuit d'attaque de transistor bipolaire à porte isolée pour contrôleur de moteur et contrôleur de moteur

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