WO2017130668A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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- WO2017130668A1 WO2017130668A1 PCT/JP2017/000361 JP2017000361W WO2017130668A1 WO 2017130668 A1 WO2017130668 A1 WO 2017130668A1 JP 2017000361 W JP2017000361 W JP 2017000361W WO 2017130668 A1 WO2017130668 A1 WO 2017130668A1
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- circuit
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- gate
- switching element
- supply circuit
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
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- 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
- H02P27/06—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 using dc to ac converters or inverters
- H02P27/08—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 using dc to ac converters or inverters with pulse width modulation
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- the present invention relates to a power conversion device.
- Patent Document 1 discloses an inverter device that uses normally-off type switching elements for the upper and lower arms and turns on the lower arm switching elements when the power supply voltage is lost.
- a power conversion device includes a switching element, an inverter circuit that inputs a DC voltage and outputs an AC voltage, a gate drive circuit that outputs a drive signal for driving the switching element, and the drive signal
- a gate power supply circuit for supplying a gate power supply voltage for outputting to the gate drive circuit, and a storage circuit for storing a charge for turning on the switching element, wherein the storage circuit includes the gate power supply circuit
- the storage circuit includes the gate power supply circuit
- the electric charge is stored by the gate power supply voltage.
- the abnormal state of the gate power supply circuit the electric charge is supplied to the switching element to turn on the switching element.
- FIG. 1 is a circuit configuration diagram of a power converter according to an embodiment of the present invention.
- the power converter 1 converts the DC voltage from the battery 2 into an AC voltage and drives the motor generator 3.
- the motor generator 3 is used as various types of power for vehicles such as electric vehicles and hybrid vehicles.
- the capacitor 4 is connected in parallel with the battery 2 and smoothes the voltage that fluctuates during power conversion.
- the contactor 5 connects and disconnects the battery 2 and the power converter 1.
- the opening / closing of the contactor 5 is controlled by the controller 6 and is opened / closed by a contactor opening / closing signal from the controller 6.
- the current sensor 7 detects a three-phase current value that drives the motor generator 3 and outputs it to the controller 6. Based on the current value from the current sensor 7 and the like, the controller 6 gives the power converter 1 a PWM (pulse width modulation) signal with which the motor generator 3 has a desired torque and rotational speed.
- PWM pulse width modulation
- the power converter 1 includes an inverter circuit 8, a gate control circuit 9, and a gate power supply circuit 10.
- the inverter circuit 8 includes a switching element 81 having a three-phase bridge configuration, and upper and lower arm series circuits 8U, 8V, and 8W each including two switching elements 81 are provided corresponding to the U phase, the V phase, and the W phase. .
- the upper and lower arm series circuits 8U, 8V, and 8W are electrically connected to the positive electrode line P and the negative electrode line N, respectively.
- a gate control circuit 9 for six phases is provided to drive and control each switching element 81 having a three-phase bridge configuration of the inverter circuit 8.
- the gate power supply circuit 10 supplies each gate control circuit 9 with a gate power supply voltage necessary for turning on the switching element 81.
- FIG. 2 is a circuit configuration diagram of the gate control circuit 9.
- Each gate control circuit 9 includes a gate drive circuit 91, a power supply circuit 92, and a storage circuit 93.
- the gate drive circuit 91 performs switching control of the switching element 81 of the inverter circuit 8 based on a PWM (pulse width modulation) signal P1 from the controller 6. That is, when driving the lower arm, the gate drive circuit 91 uses the gate power supply voltage supplied from the gate power supply circuit 10 to insulate and amplify the lower arm PWM signal and use this as a drive signal to switch the lower arm switching element. 81 is output to the gate electrode.
- PWM pulse width modulation
- the gate power supply voltage supplied from the gate power supply circuit 10 is used to insulate and amplify the upper arm PWM signal, and this is used as a drive signal for the gate electrode of the switching element 81 of the upper arm. Output to. Thereby, each switching element 81 performs a switching operation based on the input drive signal.
- the power supply circuit 92 supplies a voltage to the power storage circuit 93 according to a signal output from the controller 6 when the gate power supply circuit 10 becomes abnormal.
- the storage circuit 93 is normally charged by the gate power supply voltage supplied from the gate power supply circuit 10, and charged in response to the voltage supplied from the power supply circuit 92 when the gate power supply circuit 10 becomes abnormal. Discharge the generated power. Thereby, the gate of the switching element 81 is charged, and the switching element 81 is turned on.
- the induced current generated by the induced voltage charges the smoothing capacitor 4 through the diode of the switching element 81, Increase the voltage. Since the induced voltage is proportional to the rotation speed, the terminal voltage of the motor generator 3 increases when the vehicle is pulled at high speed. Therefore, there is a possibility that the withstand voltage of components in the power conversion device 1 such as the capacitor 4 and the switching element 81 is exceeded.
- the electric withstand voltage of the power converter 1 it is usually necessary to design the electric withstand voltage of the power converter 1 to be equal to or lower than the maximum induced voltage of the motor generator 3, but the torque required for the vehicle and the maximum current that can be supplied to the inverter circuit 8 In view of this, it may be necessary to design the motor magnet output to be large by reducing the energization current. In this case, the induced voltage becomes high and the above-described problem occurs.
- the power conversion device 1 when the vehicle is towed, the power conversion device 1 is activated, and the controller 6 turns on all phases of the upper arm or the lower arm of the inverter circuit 8 to set the motor generator 3 to the three-phase short mode. In some cases, a method of not charging the capacitor 4 is employed. However, since it is necessary to activate the inverter circuit 8 when the vehicle is towed, the switching element 81 cannot be turned on when the gate power supply circuit 10 is not activated due to an accident or the like, and the inverter circuit 8 cannot be turned on. Cannot switch to three-phase short mode. Therefore, the vehicle must be pulled at a low speed so that the vehicle cannot be pulled or the induced voltage does not increase. In the present embodiment, as will be described below, even when the gate power supply circuit 10 becomes abnormal due to an accident or the like, the motor generator 3 can be shifted to the three-phase short mode.
- FIG. 3 is a circuit configuration diagram showing in detail a part of the power conversion device 1 in the present embodiment.
- the controller 6 provides the PWM signal P1 to the drive circuit 911 of the gate drive circuit 91.
- the drive circuit 911 is configured by a gate driver IC, and the signal P2 output from the drive circuit 911 is input to a gate terminal of a transistor included in the buffer circuit 912.
- the buffer circuit 912 forms an amplifier circuit in which a gate power supply voltage is supplied from the gate power supply circuit 10 and a resistor and a transistor are connected in series, and its output is connected to the gate terminal of the switching element 81 as a drive signal.
- a drive signal is output from the gate drive circuit 91 in accordance with the PWM signal P1 from the controller 6, and the switching element 81 is driven and controlled. Further, the drive circuit 911 detects the gate power supply voltage value P3 of the gate power supply circuit 10, and when the gate power supply voltage becomes lower than the voltage at which the switching element 81 cannot be driven due to a failure of the gate power supply circuit 10, the controller 6 To output a signal P4.
- the gate power supply circuit 10 is configured by, for example, a flyback converter.
- a storage circuit 93 is connected to the controller 6 via a power supply circuit 92.
- the power supply circuit 92 is a photovoltaic coupler composed of photodiodes on the light emitting side and the light receiving side, and is connected to the signal line S ⁇ b> 1 output from the controller 6.
- a power source LV is connected to the signal line S1 via a resistor R1.
- the resistor R1 is a resistor for limiting the current supplied from the power source LV.
- a current flows from the power supply LV through the resistor R1 to the light emitting side photodiode of the photovoltaic coupler, and transmits an optical signal to the light receiving side.
- the diode on the light receiving side receives the optical signal, uses the photoelectric effect, induces a voltage between the anode and the cathode of the light receiving side diode, and supplies a current.
- a capacitor C1 is connected in parallel via a diode D1, and a diode D1, a MOS transistor (MOSFET) T1, and a diode D3 are connected in series and connected to the gate electrode of the switching element 81.
- the output line of the signal P2 of the drive circuit 911 is connected to the connection line between the diode D1 and the MOS transistor T1 via the diode D2.
- the capacitor C ⁇ b> 1 stores electric charge for charging the gate electrode of the switching element 81.
- the capacity of the capacitor C1 is set based on the charge amount necessary to turn on the switching element 81.
- the diode D1 limits the energization direction to the direction in which electric charge is charged from the photovoltaic coupler as the power supply circuit 92 to the capacitor C1.
- the diode D2 limits the energization direction to the direction in which the electric charge is charged from the drive circuit 911 to the capacitor C1.
- the diode D3 limits the energization direction to the direction of charging electric charge from the capacitor C1 to the gate electrode of the switching element 81.
- the MOS transistor T1 cuts off the current flow so that the electric charge stored in the capacitor C1 is not charged to the gate electrode of the switching element 81 except when the gate power supply circuit 10 is abnormal. In FIG.
- a gate drive circuit 91, a power supply circuit 92, and a power storage circuit 93 corresponding to one switching element 81 are illustrated.
- the gate drive circuit 91, the power supply circuit 92, and the storage circuit 93 are provided in the same manner as in FIG. 3 corresponding to each of the six switching elements 81.
- the power converter 1 is supplied with a PWM signal P1 from the controller 6 to the gate drive circuit 91, drives the switching element 81 via the buffer circuit 912, and converts the DC power of the battery 2 into AC power. Then, the motor generator 3 is driven. At that time, electric charge is accumulated in the capacitor C1 in the power storage circuit 93 via the diode D2 by the PWM signal P1 transmitted from the drive circuit 911.
- the PWM signal P1 is generated based on the gate power supply voltage supplied from the gate power supply circuit 10. In other words, the capacitor C1 has a gate power supply supplied from the gate power supply circuit 10. Charges are accumulated by the voltage.
- the charge may be accumulated in the capacitor C1 directly from the gate power supply circuit 10 via the diode D2. Since the electric charge accumulated in the capacitor C1 is cut off by the MOS transistor T1, the gate electrode of the switching element 81 is not charged and the normal driving of the switching element 81 is not hindered.
- the drive circuit 911 monitors the soundness of the gate power supply circuit 10 and determines that an abnormality has occurred in the gate power supply circuit 10 if the voltage value P3 falls below a set threshold, and outputs a signal P4 to the controller 6. .
- the controller 6 After receiving the signal P4, the controller 6 outputs a signal to the signal line S1 to operate the photovoltaic coupler of the power supply circuit 92.
- the MOS transistor T1 in the power storage circuit 93 becomes conductive, and the electric charge accumulated in the capacitor C1 is immediately supplied to the gate electrode of the switching element 81, and the switching element 81 is turned on. Further, the capacitor C1 is charged by the voltage supplied from the photovoltaic coupler, and the charge is accumulated. In this way, when the gate power supply circuit 10 is in an abnormal state, the power storage circuit 93 turns on the switching element 81 for all phases of the upper arm or the switching element 81 for all phases of the lower arm.
- the motor generator 3 can be shifted to the three-phase short mode by turning on all the phases of the upper arm or the lower arm of the inverter circuit 8.
- the gate power supply circuit 10 has been described as an example in which the gate power supply voltage is supplied to all the switching elements 81 at once. However, the gate power supply circuit 10 may be configured to include the gate power supply circuit 10 distributed for each of the three phases. Good. Moreover, although the example of IGBT was demonstrated as the switching element 81, MOSFET and a bipolar type transistor may be sufficient.
- the power supply circuit 92 may be configured by a power supply circuit having an insulating type and a simpler structure than the flyback converter.
- the switching element 81 is driven by using the buffer circuit 912, the buffer circuit 912 may not be provided and only the gate driver IC may be directly driven.
- the power conversion device 1 includes a switching element 81, and includes an inverter circuit 8 that inputs a DC voltage and outputs an AC voltage, and a gate drive circuit 91 that outputs a drive signal for driving the switching element 81.
- a gate power supply circuit 10 for supplying a gate power supply voltage for outputting a drive signal to the gate drive circuit 91, and a power storage circuit 93 for storing a charge for turning on the switching element 81.
- the gate power supply circuit 10 When the gate power supply circuit 10 is in a normal state, charges are accumulated by the gate power supply voltage, and when the gate power supply circuit 10 is in an abnormal state, the charges are supplied to the switching element 81 to turn on the switching element 81. .
- the power converter device which can respond to the loss of a power supply voltage can be provided, without a circuit structure becoming complicated.
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Abstract
Description
電力変換装置1は、バッテリ2からのDC電圧をAC電圧に変換してモータージェネレータ3を駆動する。モータージェネレータ3は、電気自動車やハイブリッド自動車などの車両の各種動力として用いられる。キャパシタ4はバッテリ2と並列に接続され、電力変換時に変動する電圧を平滑化する。コンタクタ5は、バッテリ2と電力変換装置1との接続および切り離しを行う。コンタクタ5の開閉は、コントローラ6により制御され、コントローラ6からのコンタクタ開閉信号により開閉動作する。
ゲート駆動回路91は、コントローラ6からのPWM(パルス幅変調)信号P1に基づいてインバータ回路8のスイッチング素子81のスイッチング制御を行う。すなわち、ゲート駆動回路91は、下アームを駆動する場合、ゲート電源回路10から供給されたゲート電源電圧を用いて、下アームPWM信号を絶縁かつ増幅し、これをドライブ信号として下アームのスイッチング素子81のゲート電極に出力する。同様に上アームを駆動する場合には、ゲート電源回路10から供給されたゲート電源電圧を用いて、上アームPWM信号を絶縁かつ増幅し、これをドライブ信号として上アームのスイッチング素子81のゲート電極に出力する。これにより、各スイッチング素子81は入力されたドライブ信号に基づいてスイッチング動作する。
コントローラ6は、PWM信号P1をゲート駆動回路91の駆動回路911に与える。駆動回路911は、ゲートドライバICで構成され、駆動回路911より出力された信号P2は、バッファ回路912を構成するトランジスタのゲート端子に入力される。バッファ回路912は、ゲート電源回路10よりゲート電源電圧が供給され、抵抗とトランジスタが直列に接続された増幅回路を構成し、その出力はドライブ信号としてスイッチング素子81のゲート端子に接続される。これにより、ゲート電源回路10が正常に動作している通常の状態では、コントローラ6からのPWM信号P1に応じてゲート駆動回路91からドライブ信号が出力され、スイッチング素子81が駆動制御される。また、駆動回路911は、ゲート電源回路10のゲート電源電圧値P3を検知しており、ゲート電源回路10の故障によりゲート電源電圧がスイッチング素子81を駆動できない電圧以下になった場合に、コントローラ6へ信号P4を出力する。なお、図示省略したが、ゲート電源回路10は、例えばフライバックコンバータによって構成される。
電力変換装置1は、通常の動作では、コントローラ6からゲート駆動回路91へPWM信号P1が与えられ、バッファ回路912を介して、スイッチング素子81を駆動し、バッテリ2の直流電力を交流電力に変換し、モータージェネレータ3を駆動する。その際に、蓄電回路93内のコンデンサC1には、駆動回路911から伝送されるPWM信号P1によりダイオードD2を介して電荷が蓄積される。なお、図示省略したが、PWM信号P1はゲート電源回路10から供給されるゲート電源電圧に基づいて生成されるもので、換言すれば、コンデンサC1には、ゲート電源回路10から供給されるゲート電源電圧により電荷が蓄積されることになる。なお、PWM信号P1によらず、ゲート電源回路10から直接、ダイオードD2を介してコンデンサC1に電荷を蓄積してもよい。このようにしてコンデンサC1に蓄積された電荷は、MOSトランジスタT1によって遮断されているので、スイッチング素子81のゲート電極へ充電されることはなく、通常のスイッチング素子81の駆動を妨げることはない。
(1)電力変換装置1は、スイッチング素子81により構成され、直流電圧を入力して交流電圧を出力するインバータ回路8と、スイッチング素子81を駆動する為のドライブ信号を出力するゲート駆動回路91と、ドライブ信号を出力する為のゲート電源電圧をゲート駆動回路91に供給するゲート電源回路10と、スイッチング素子81をオンさせる為の電荷を蓄電する蓄電回路93と、を備え、蓄電回路93は、ゲート電源回路10が正常状態の場合には、ゲート電源電圧により電荷を蓄積し、ゲート電源回路10が異常状態の場合には、電荷をスイッチング素子81に供給してスイッチング素子81をオン状態にする。これにより、回路構成が複雑になることなく、電源電圧の喪失に対応可能な電力変換装置を提供できる。
2 バッテリ
3 モータージェネレータ
4 キャパシタ
5 コンタクタ
6 コントローラ
7 電流センサ
8 インバータ回路
9 ゲート制御回路
10 ゲート電源回路
81 スイッチング素子
91 ゲート駆動回路
92 電源供給回路
93 蓄電回路
Claims (6)
- スイッチング素子により構成され、直流電圧を入力して交流電圧を出力するインバータ回路と、
前記スイッチング素子を駆動する為のドライブ信号を出力するゲート駆動回路と、
前記ドライブ信号を出力する為のゲート電源電圧を前記ゲート駆動回路に供給するゲート電源回路と、
前記スイッチング素子をオンさせる為の電荷を蓄電する蓄電回路と、を備え、
前記蓄電回路は、前記ゲート電源回路が正常状態の場合には、前記ゲート電源電圧により前記電荷を蓄電し、前記ゲート電源回路が異常状態の場合には、前記電荷を前記スイッチング素子に供給して前記スイッチング素子をオン状態にする電力変換装置。 - 請求項1に記載の電力変換装置であって、
前記蓄電回路は、前記ゲート電源回路が異常状態の場合には、上アーム全相の前記スイッチング素子もしくは下アーム全相の前記スイッチング素子をオン状態にする電力変換装置。 - 請求項1または請求項2に記載の電力変換装置であって、
前記蓄電回路に電圧を供給する電源供給回路をさらに備え、
前記蓄電回路は、前記ゲート電源回路が異常状態の場合には、前記電源供給回路から供給される電圧により前記電荷を蓄電する電力変換装置。 - 請求項1から請求項3のいずれか一項に記載の電力変換装置であって、
前記蓄電回路は、前記電荷の供給を遮断する遮断回路を備え、前記ゲート電源回路が正常状態の場合には、前記電荷を前記遮断回路により遮断して、前記スイッチング素子に供給しない電力変換装置。 - 請求項1から請求項4のいずれか一項に記載の電力変換装置であって、
前記蓄電回路は、前記電荷を蓄電するコンデンサを備え、
前記コンデンサの容量は、前記スイッチング素子をオンさせる為に必要なゲート充電電荷量に基づいて設定されている電力変換装置。 - 請求項1から請求項5のいずれか一項に記載の電力変換装置であって、
前記蓄電回路に電源を供給するフォトボルカプラを備える電力変換装置。
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DE112017000253.2T DE112017000253T5 (de) | 2016-01-29 | 2017-01-10 | Leistungsumwandlungsvorrichtung |
CN201780004118.3A CN108450049B (zh) | 2016-01-29 | 2017-01-10 | 电源转换装置 |
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CN108092603A (zh) * | 2017-12-30 | 2018-05-29 | 赵志泓 | 一种基于新型逆变器的混凝土屋顶监控供电系统 |
CN108183679A (zh) * | 2017-12-30 | 2018-06-19 | 赵志泓 | 一种基于新型逆变器的彩钢屋顶监控供电系统 |
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CN109818395A (zh) * | 2019-01-28 | 2019-05-28 | 浙江众合科技股份有限公司 | 一种超级电容供电的电源防护电路 |
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JP7003966B2 (ja) * | 2019-04-25 | 2022-01-21 | 株式会社デンソー | 駆動回路 |
DE102020111576B4 (de) * | 2020-04-28 | 2022-11-17 | Seg Automotive Germany Gmbh | Schaltungsanordnung für einen Stromrichter, Stromrichter, elektrische Maschine und Verfahren zum Betreiben einer elektrischen Maschine |
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JP2014192975A (ja) * | 2013-03-26 | 2014-10-06 | Aisin Aw Co Ltd | インバータ装置 |
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JP2014158399A (ja) * | 2013-02-18 | 2014-08-28 | Aisin Aw Co Ltd | 回転電機駆動装置 |
JP2015115977A (ja) * | 2013-12-09 | 2015-06-22 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
JP2015159684A (ja) * | 2014-02-25 | 2015-09-03 | アイシン・エィ・ダブリュ株式会社 | 回転電機制御装置 |
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CN108199652A (zh) * | 2017-12-30 | 2018-06-22 | 孙振华 | 一种防雷家庭光伏供电系统 |
CN109818395A (zh) * | 2019-01-28 | 2019-05-28 | 浙江众合科技股份有限公司 | 一种超级电容供电的电源防护电路 |
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US10840800B2 (en) | 2020-11-17 |
US20190020263A1 (en) | 2019-01-17 |
CN108450049B (zh) | 2020-11-17 |
DE112017000253T5 (de) | 2018-09-13 |
JPWO2017130668A1 (ja) | 2018-06-28 |
JP6469894B2 (ja) | 2019-02-13 |
CN108450049A (zh) | 2018-08-24 |
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