WO2018186188A1 - Système électrique - Google Patents

Système électrique Download PDF

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Publication number
WO2018186188A1
WO2018186188A1 PCT/JP2018/011489 JP2018011489W WO2018186188A1 WO 2018186188 A1 WO2018186188 A1 WO 2018186188A1 JP 2018011489 W JP2018011489 W JP 2018011489W WO 2018186188 A1 WO2018186188 A1 WO 2018186188A1
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WO
WIPO (PCT)
Prior art keywords
power supply
resistance element
positive electrode
voltage
circuit
Prior art date
Application number
PCT/JP2018/011489
Other languages
English (en)
Japanese (ja)
Inventor
慎二 中本
酒井　剛志
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to DE112018001900.4T priority Critical patent/DE112018001900T5/de
Publication of WO2018186188A1 publication Critical patent/WO2018186188A1/fr

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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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • 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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions

Definitions

  • the present invention relates to an electrical system.
  • some electric systems include an inverter circuit and a filter circuit (see, for example, Patent Document 1).
  • the inverter circuit causes a three-phase AC current to flow through the three-phase AC electric motor based on the output voltage of the power source.
  • an electromagnetic coil and a resistance element are connected in parallel between the positive electrode of the power source and the positive electrode of the inverter circuit. The resistance element can attenuate the AC component of the current flowing between the positive electrode of the power source and the positive electrode of the inverter circuit.
  • the present inventors refer to the electrical system of Patent Document 1 above, and as shown in FIG. 10, the electrical devices 10A and 10B are connected in parallel between the positive electrode and the negative electrode of the DC power supply 3. System 1A was examined.
  • a smoothing capacitor 20A is connected in parallel with the electric device 10A between the positive electrode and the negative electrode of the DC power source 3, and a smoothing capacitor 21 is connected between the positive electrode and the negative electrode of the DC power source 3 in the electric device 10B. Connected in parallel.
  • a filter circuit 30A is provided between the positive electrode of the smoothing capacitor 20A and the positive electrode of the smoothing capacitor 21A.
  • an electromagnetic coil 31A and a resistance element 32A are connected in parallel between the positive electrode of the smoothing capacitor 20A and the positive electrode of the smoothing capacitor 21A.
  • the resistance element 32A constitutes a closed circuit 25A together with the smoothing capacitors 20A and 21A and the electromagnetic coil 31A.
  • the resistance element 32A suppresses an alternating current component in the current flowing through the closed circuit 25A. Thereby, the resistance element 32A can suppress the occurrence of resonance based on the power supply voltage from the DC power supply 3 in the closed circuit 25A.
  • the first object of the present disclosure is to provide an electrical system that can determine whether or not a resistance element constituting a filter circuit has failed. It is a second object of the present invention to provide an electrical system that suppresses a reduction in device lifetime or occurrence of a failure when a resistive element constituting the filter circuit fails.
  • an electrical system includes an electrical device that operates with a power supply voltage supplied from a DC power supply and a resistance element that forms a closed circuit, and the power supply voltage of the DC power supply is supplied to the electrical device.
  • the resistance element attenuates an alternating current component of the current flowing through the closed circuit to suppress resonance in the closed circuit, and the power supply voltage of the DC power supply can be reduced even when the resistive element fails.
  • the filter circuit comprised so that it may give to an apparatus, and the failure determination part which determines whether the resistance element is out of order.
  • the electric system when the failure determination unit determines that the resistance element has failed, includes a limit control unit that limits the operation of the electric device in order to suppress resonance in the closed circuit.
  • FIG. 1 is an electric circuit diagram illustrating an overall configuration of an in-vehicle power conversion system according to a first embodiment. It is a flowchart which shows the inverter control process in the control apparatus of FIG.
  • FIG. 3 is map data for determining an upper limit value and a lower limit value of an effective value of a filter resistance current used for determining whether or not a resistance element has failed in some steps in FIG. 2.
  • It is an electric circuit diagram which shows the whole structure of the vehicle-mounted power conversion system in 2nd Embodiment.
  • It is an electric circuit diagram which shows the whole structure of the vehicle-mounted power conversion system in 3rd Embodiment.
  • FIG. 1 shows an electrical configuration of a first embodiment of an in-vehicle power conversion system 1.
  • the in-vehicle power conversion system 1 is an electric system that drives the three-phase AC motor 2 based on the output voltage of the high-voltage power supply 3.
  • the three-phase AC motor 2 is connected to the compression mechanism 2b via the connecting shaft 2a.
  • the high-voltage power supply 3 is a battery device that outputs a high-voltage DC voltage, and the output voltage (for example, 210V) is a power supply that is higher than the output voltage (for example, 12V) of the low-voltage power supply.
  • the low voltage power source is a battery device for applying a DC voltage to the control device 80 and the electronic control device 90.
  • the three-phase AC motor 2, the connecting shaft 2a, and the compression mechanism 2b constitute an electric compressor that compresses the refrigerant.
  • the electric compressor is one of the components constituting a refrigeration cycle apparatus for an on-vehicle air conditioner that circulates refrigerant.
  • a synchronous AC motor is used as the three-phase AC motor 2.
  • the in-vehicle power conversion system 1 includes an inverter circuit 10, smoothing capacitors 20, 21, a filter circuit 30, a relay unit 40, an electric device 50, a detection circuit 60, a drive circuit 70, as shown in FIG. And a control device 80.
  • the inverter circuit 10 outputs a three-phase alternating current to the stator coil of the three-phase alternating current motor 2 based on the output voltage of the high voltage power supply 3.
  • a stator coil of this embodiment for example, a U-phase coil, a V-phase coil, and a W-phase coil that are star-connected is used.
  • the inverter circuit 10 constitutes a first electric device, and is a known circuit composed of transistors SW1, SW2, SW3, SW4, SW5, SW6, and free-wheeling diodes D1, D2, D3, D4, D5, D6. is there.
  • Transistors SW1, SW3, and SW5 are connected to the positive bus 11.
  • the positive electrode 11 of the high voltage power supply 3 is connected to the positive electrode bus 11.
  • the transistors SW2, SW4, and SW6 are connected to the negative electrode bus 12.
  • a negative electrode of the high voltage power supply 3 is connected to the negative electrode bus 12.
  • the positive bus 11 constitutes a positive electrode in the inverter circuit 10
  • the negative bus 12 constitutes a negative electrode in the inverter circuit 10.
  • the transistors SW1 and SW2 are connected in series between the positive electrode bus 11 and the negative electrode bus 12.
  • the transistors SW3 and SW4 are connected in series between the positive electrode bus 11 and the negative electrode bus 12.
  • the transistors SW5 and SW6 are connected in series between the positive electrode bus 11 and the negative electrode bus 12.
  • the common connection terminal T1 between the transistors SW1 and SW2 is connected to the U-phase coil of the stator coil of the three-phase AC motor 2.
  • a common connection terminal T ⁇ b> 2 between the transistors SW ⁇ b> 3 and SW ⁇ b> 4 is connected to the V-phase coil of the stator coil of the three-phase AC motor 2.
  • a common connection terminal T3 between the transistors SW5 and SW6 is connected to the W-phase coil of the stator coil of the three-phase AC motor 2.
  • IGBT is an abbreviation for Insulated Gate Bipolar Transistor.
  • the inverter circuit 10, the three-phase AC motor 2, the connecting shaft 2a, and the compression mechanism 2b constitute a first electric device.
  • the smoothing capacitor 20 is a first smoothing capacitor disposed between the inverter circuit 10 and the high voltage power supply 3. Smoothing capacitor 20 is connected between positive electrode bus 11 and negative electrode bus 12 of inverter circuit 10, and smoothes a voltage applied from high voltage power supply 3 between positive electrode bus 11 and negative electrode bus 12. That is, the smoothing capacitor 20 stabilizes the voltage output from the high voltage power supply 3 to the inverter circuit 10.
  • the smoothing capacitor 21 is a second smoothing capacitor connected in parallel to the electric device 50 between the positive electrode and the negative electrode of the high voltage power supply 3.
  • the smoothing capacitor 21 is disposed on the high voltage power supply 3 side with respect to the inverter circuit 10 and the smoothing capacitor 20.
  • the smoothing capacitor 21 smoothes the voltage output between the positive electrode and the negative electrode of the electric device 50 from the high voltage power supply 3.
  • the electric device 50 is a second electric device that includes a traveling motor and a driving circuit for the traveling motor that drives the traveling motor.
  • the driving circuit for the traveling motor includes a DC / DC converter circuit that outputs a voltage supplied from the high voltage power supply 3 by stepping down or boosting, and an inverter that drives the traveling motor based on the output voltage of the DC / DC converter circuit. Circuit.
  • the filter circuit 30 includes an electromagnetic coil 41 and a resistance element 32 connected in parallel between the positive electrode of the smoothing capacitor 20 and the positive electrode of the smoothing capacitor 21.
  • the electromagnetic coil 41 is provided to suppress an alternating current component of the current flowing between the high voltage power supply 3 and the inverter circuit 10.
  • the electromagnetic coil 41 forms a closed circuit 25 together with the smoothing capacitors 20 and 21 and the resistance element 32.
  • the resistance element 32 is provided for attenuating the AC component of the current flowing through the closed circuit 25. As a result, the resistance element 32 can be prevented from resonating based on the power supply voltage from the high voltage power supply 3 in the closed circuit 25.
  • the relay unit 40 is disposed between the smoothing capacitors 20 and 21 and the high voltage power supply 3.
  • the relay unit 40 is disposed on the high voltage power supply 3 side with respect to the inverter circuit 10, the smoothing capacitors 20 and 21, and the filter circuit 30.
  • the relay unit 40 opens and connects between the inverter circuit 10 and the smoothing capacitors 20 and 21 and the high voltage power supply 3.
  • the relay unit 40 includes relays 51, 52, 53, and a resistance element 54.
  • the relays 51 and 52 are relay switches arranged in parallel between the positive electrode of the high voltage power supply 3 and the positive electrode of the smoothing capacitor 21.
  • the relay 53 is a relay switch disposed between the negative electrode of the high voltage power supply and the negative electrode of the smoothing capacitor 21.
  • the relays 51, 52 and 53 are controlled by the electronic control device 90.
  • the resistance element 54 is connected in series with the relay 52 between the positive electrode of the high voltage power supply 3 and the positive electrode of the smoothing capacitor 21.
  • the resistance element 54 prevents the inrush current from flowing from the high voltage power supply 3 to the smoothing capacitors 20 and 21 by connecting the relay 52 between the positive electrode of the high voltage power supply 3 and the positive electrode of the smoothing capacitor 21. Used to do.
  • the control device 80 includes a microcomputer, a memory, and the like, and controls the inverter circuit 10 via the drive circuit 70 based on the detection values of the current sensors 81 and 82 and the control signal input from the electronic control device 90. Inverter control processing is executed. A computer program executed by the microcomputer is executed in the memory. A memory is a non-transitional physical storage medium.
  • the drive circuit 70 is controlled by the control device 80 and outputs a pulse voltage for switching the transistors SW1, SW2, SW3, SW4, SW5, SW6 to the inverter circuit 10.
  • the current sensor 81 is a sensor that detects a three-phase AC current (hereinafter referred to as a motor current) output from the inverter circuit 10 to the stator coil of the three-phase AC motor 2 as a current detection unit.
  • a motor current a three-phase AC current
  • the current sensor 82 is a sensor that detects a current flowing through the resistance element 32 (hereinafter referred to as a filter resistance current) as a state quantity detection unit.
  • current sensors 81 and 82 of the present embodiment current sensors such as a current transformer (that is, current transformer) method, a Hall element method, and a shunt resistance method are used.
  • the detection circuit 60 samples the current values detected by the current sensors 81 and 82 and outputs the sampled sampling data to the control device 80.
  • the electronic control device 90 outputs a command value indicating the target value of the rotation speed of the three-phase AC motor 2 to the control device 80.
  • various electronic control devices such as an air conditioner electronic control device can be used.
  • control device 80 of the present embodiment will be described with reference to FIGS.
  • FIG. 2 is a flowchart showing inverter control processing in the control device 80.
  • FIG. 3 is map data used to determine whether or not the resistance element 32 has failed.
  • the control device 80 executes inverter control processing according to the flowchart of FIG.
  • the detection circuit 60 repeatedly samples the current values detected by the current sensors 81 and 82 and outputs the sampled sampling data to the control device 80.
  • the control device 80 determines whether or not the filter resistance protection control mode is being executed.
  • the filter resistance protection control mode is a control for protecting the devices constituting the in-vehicle power conversion system 1 by restricting the operation of the three-phase AC motor 2 and suppressing the resonance in the closed circuit 25.
  • the control device 80 determines NO in step 100.
  • the control device 80 acquires sampling data indicating the detection value of the current sensor 81 (that is, the motor current) from the detection circuit 60.
  • the motor current is detected by the current sensor 81, and the detected motor current is acquired through the detection circuit 60.
  • step 102 that is, the calculation unit
  • the control device 80 determines the upper limit value Ya and the lower limit value Yb used to determine whether or not the resistance element 32 of the filter 30 has failed as a motor current and a map of FIG. Calculate based on data.
  • the upper limit value Ya is the upper limit value of the effective value of the filter resistance current when the resistance element 32 is normal.
  • the lower limit value Yb is a lower limit value of the effective value of the filter resistance current when the resistance element 32 is normal.
  • FIG. 3 shows the relationship between the upper limit value Ya, the lower limit value Yb, the effective value of the motor current, and whether or not the resistance element 32 has failed, with the effective value of the motor current as the horizontal axis and the effective value of the filter resistance current as the vertical axis. Show.
  • the upper limit value Ya and the effective value of the motor current are specified in a one-to-one relationship
  • the lower limit value Yb and the effective value of the motor current are specified in a one-to-one relationship.
  • the effective value of the filter resistance current becomes larger than the upper limit value Ya due to resonance in the closed circuit 25.
  • the short circuit failure is a failure in which two portions (for example, the positive electrode and the negative electrode) of the resistance element 32 are short-circuited and the resistance value is reduced as compared with the normal state.
  • the open failure is a failure in which one portion of the resistance element 32 is disconnected and a space between the positive electrode and the negative electrode is opened and the resistance value becomes larger than that in a normal state.
  • the upper limit value Ya and the lower limit value Yb increase as the effective value of the motor current increases.
  • the upper limit value Ya and the lower limit value Yb are obtained based on the map data of FIG. 3 and the motor current detected by the current sensor 81.
  • step 103 the control device 80 acquires sampling data indicating the detection value (that is, the filter resistance current) of the current sensor 82 from the detection circuit 60.
  • control device 80 acquires the filter resistance current detected by the current sensor 82 through the detection circuit 60 when it is determined that the filter resistance protection control mode is not performed.
  • the ripple current can be satisfactorily detected by a predetermined method.
  • One of the predetermined methods is to sample the detection value of the current sensor 82 immediately after turning on the transistor on the positive bus 11 side (that is, the upper arm) among the transistors SW1 to SW6.
  • Another predetermined method is to repeatedly sample the detection value of the current sensor 82 over a certain period.
  • step 104 that is, the failure determination unit
  • the control device 80 determines whether or not the acquired effective value of the filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb. judge.
  • step 105 that is, the normal control unit
  • the control device 80 performs an inverter circuit via the drive circuit 70 based on the detected value of the current sensor 81 and the command value output from the electronic control device 90. 10 is controlled normally.
  • the inverter circuit 10 causes a three-phase AC current to flow through the stator coil of the three-phase AC motor 2 in order to approach the target value of the rotational speed of the three-phase AC motor 2.
  • control device 80 performs normal control for controlling the three-phase AC motor 2 via the drive circuit 70 and the inverter circuit 10.
  • control device 80 returns to step 100 and determines NO because the filter resistance protection control mode is not being implemented.
  • control device 80 acquires the motor current detected by the current sensor 81 through the detection circuit 60 in step 101.
  • control device 80 acquires the motor current detected by the current sensor 81 through the detection circuit 60 when the three-phase AC motor 2 is normally controlled via the drive circuit 70 and the inverter circuit 10. It will be.
  • step 102 the control device 80 calculates an upper limit value Ya and a lower limit value Yb used to determine the failure of the resistance element 32 of the filter 30 based on the motor current and the map data of FIG. To do.
  • control device 80 acquires the filter resistance current detected by the current sensor 82 through the detection circuit 60 in Step 103.
  • control device 80 acquires the filter resistance current detected by the current sensor 82 through the detection circuit 60 when the three-phase AC motor 2 is normally controlled via the drive circuit 70 and the inverter circuit 10. Will do.
  • step 104 the control device 80 determines whether or not the effective value of the acquired filter resistance current is within the range between the upper limit value Ya and the lower limit value Yb, thereby determining the resistance element 32. It is determined whether or not is normal.
  • control device 80 determines YES in step 104 when the filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb. Subsequently, in step 105, the normal control of the three-phase AC motor 2 is continued via the drive circuit 70 and the inverter circuit 10.
  • control device 80 determines NO in step 100, YES determination in steps 101, 102, and 103, YES determination in step 104, and step 105. Repeat the process execution.
  • Step 104 when the effective value of the filter resistance current is out of the range between the upper limit value Ya and the lower limit value Yb, the control device 80 determines that the resistance element 32 has failed and determines NO. .
  • control device 80 notifies the electronic control device 90 that the resistance element 32 has failed in step 106.
  • the resonance frequency of the closed circuit 25 when an open failure occurs in the resistance element 32 is fo
  • the resonance frequency of the closed circuit 25 when a short circuit failure occurs in the resistance element 32 is an integer. Is N.
  • the control device 80 functions as a trigger that causes the input current to resonate in the closed circuit 25 in a predetermined case.
  • the input current input to the inverter circuit 10 from the high voltage power source 3 through the filter 30 is one of the following five frequencies: It is when it has the frequency component of.
  • the five frequencies are “resonance frequency fo”, “resonance frequency fs”, “N ⁇ resonance frequency fo”, and “N ⁇ resonance frequency fs”.
  • control device 80 controls the inverter circuit 10 via the drive circuit 70 to implement the filter resistance protection control mode in step 107 (that is, the limit control unit).
  • control device 80 performs the filter resistance protection control mode instead of the normal control in the inverter circuit 10 and controls the inverter circuit 10 via the drive circuit 70 so as to stop the three-phase AC motor 2. Will do.
  • the transistors SW1, SW2, SW3, SW4, SW5, and SW6 of the inverter circuit 10 are turned off, and the flow of the input current from the high voltage power supply 3 to the inverter circuit 10 through the filter 30 is stopped.
  • the input current serving as a trigger for causing resonance in the closed circuit 25 is stopped from being input to the inverter circuit 10. As a result, resonance in the closed circuit 25 is suppressed.
  • control device 80 After that, the control device 80 returns to step 100 and, if it determines YES, moves to step 108 and continues execution of the filter resistance protection control mode.
  • the in-vehicle power conversion system 1 includes the inverter circuit 10 that operates by the power supply voltage supplied from the power supply 3, the filter circuit 30, and the smoothing capacitors 21 and 20.
  • the smoothing capacitors 21 and 20 are connected in parallel between the positive electrode and the negative electrode of the power supply 3.
  • Smoothing capacitor 20 is connected between positive electrode bus 11 and negative electrode bus 12 of inverter circuit 10.
  • the filter circuit 30 includes an electromagnetic coil 31 and a resistance element 32 connected in parallel between the positive electrode of the smoothing capacitor 21 and the positive electrode of the smoothing capacitor 20.
  • the electromagnetic coil 31 and the smoothing capacitors 21 and 20 constitute a closed circuit 25.
  • the resistance element 32 attenuates the AC component of the current flowing through the closed circuit 25 to suppress resonance in the closed circuit 25.
  • the filter circuit 30 is configured such that the power supply voltage from the power supply 3 is applied to the inverter circuit 10 through the electromagnetic coil 31 when the resistance element 32 is out of order.
  • the control device 80 determines whether or not the resistance element 32 has failed according to the detection value of the current sensor 82. Thereby, it can be determined whether the resistance element 32 which comprises the filter circuit 30 failed.
  • the control device 80 determines that the resistance element 32 has failed, the control device 80 executes a filter resistance protection control mode in which the inverter circuit 10 is stopped. Thereby, when the resistive element 32 which comprises the filter circuit 30 fails, it can suppress that lifetime reduction and failure of devices, such as the smoothing capacitors 21 and 20 and the electromagnetic coil 31, generate
  • the control device 80 determines the upper limit value Ya and the lower limit value Yb used for determining whether or not the resistance element 32 of the filter 30 has failed based on the motor current and the map data in FIG. To calculate. Therefore, the upper limit value Ya and the lower limit value Yb that match the motor current can be obtained. Therefore, the presence / absence of a failure of the resistance element 32 of the filter 30 can be accurately determined.
  • FIG. 4 shows a circuit configuration of the in-vehicle power conversion system 1 of the present embodiment.
  • the resistance element 32 of the filter circuit 30 attenuates the AC component of the current flowing through the closed circuit 25 and suppresses resonance generated in the closed circuit 25.
  • the control device 80 of the present embodiment executes the inverter control process according to the flowchart of FIG. 2 as in the first embodiment.
  • the control device 80 sets the upper limit value Ya and the lower limit value Yb in step 102 based on the motor current detected by the current sensor 81 and the map data shown in FIG. calculate. Then, when the control device 80 normally controls the inverter circuit 10 via the drive circuit 70, the filter resistance current detected by the current sensor 82 is acquired at step 103 via the detection circuit 60. The control device 80 determines whether or not the resistance element 32 is normal by determining whether or not the effective value of the acquired filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb. Is determined in step 104.
  • the effective value of the filter resistance current becomes larger than the upper limit value Ya due to resonance of the closed circuit 25.
  • resonance does not occur in the closed circuit 25, but the effective value of the filter resistance current becomes smaller than the upper limit value Ya.
  • step 104 if the effective value of the filter resistance current deviates from a certain range between the upper limit value Ya and the lower limit value Y, it is determined in step 104 that the resistance element 32 has failed. Then, in the next step 107, a filter resistance protection control mode for stopping the operation of the inverter circuit 10 is performed. For this reason, the output of the trigger that causes resonance in the closed circuit 25 from the inverter circuit 10 is stopped. Therefore, resonance in the closed circuit 25 is suppressed.
  • the resistance element 32 constituting the filter circuit 30 breaks down, it is possible to prevent the life of the devices such as the smoothing capacitors 21 and 20 and the electromagnetic coil 31 from decreasing or failing. it can.
  • FIG. 5 shows a circuit configuration of the in-vehicle power conversion system 1 of the present embodiment.
  • a voltage sensor 83 is provided as a state quantity detection unit that detects a voltage between the positive bus 11 and the negative bus 12 (hereinafter referred to as a bus voltage).
  • a bus voltage a voltage between the positive bus 11 and the negative bus 12
  • control device 80 of the present embodiment will be described with reference to FIG.
  • FIG. 6 is a flowchart showing inverter control processing in the control device 80.
  • the control device 80 of the present embodiment executes inverter control processing according to the flowchart of FIG. 6 instead of FIG.
  • the detection circuit 60 repeatedly samples the current values detected by the current sensors 81 and 82 and outputs the sampled sampling data to the control device 80.
  • steps 101a, 102a, 103a instead of steps 101, 102, 103 in FIG. 2 are used.
  • the same reference numerals as those in FIG. 2 indicate the same steps, and the description thereof is omitted.
  • step 100 it is determined as NO because the filter resistance protection control mode is not implemented.
  • a plurality of sampling data in the detection value of the voltage sensor 83 (that is, the voltage between the buses) is acquired from the detection circuit 60.
  • the plurality of sampling data is data indicating the bus-to-bus voltage sampled by the detection circuit 60 over a certain period.
  • the voltage between the buses is detected by the voltage sensor 83 over a certain period, and the detected voltage between the buses is acquired through the detection circuit 60.
  • step 102a that is, a voltage fluctuation amount calculation unit
  • a fluctuation value of the bus-to-bus voltage (hereinafter referred to as a voltage fluctuation value dV) is calculated based on these bus-to-bus voltages.
  • the voltage fluctuation value dV in the present embodiment is a value indicating a difference between the maximum value and the minimum value of the bus-to-bus voltage in a certain period.
  • step 104a it is determined whether or not the voltage fluctuation value dV is within a certain range between the upper limit value Ya and the lower limit value Yb.
  • Predetermined values are used as the upper limit value Ya and the lower limit value Yb in the present embodiment.
  • step 104a when the voltage fluctuation value dV is within a certain range, it is determined that the resistance element 32 is normal and YES is determined in step 104a.
  • step 105 normal control for controlling the inverter circuit 10 through the drive circuit 70 is performed based on the command value output from the electronic control unit 90.
  • step 104a the electronic control unit 90 is notified in step 106 that the resistance element 32 has failed.
  • step 107 the filter resistance protection control mode in which the drive circuit 70 is controlled to stop the inverter circuit 10 is performed.
  • the control device 80 detects the voltage between the buses with the voltage sensor 83 over a certain period, and acquires the detected voltage between the buses through the detection circuit 60.
  • the control device 80 calculates the voltage fluctuation value dV based on the voltage between the buses, and determines whether or not the voltage fluctuation value dV is within a predetermined range, whereby the resistance element 32 is normal. It is determined whether or not.
  • control device 80 determines that the resistance element 32 has failed when the voltage fluctuation value dV is out of a certain range, the control device 80 controls the drive circuit 70 to limit the operation of the inverter circuit 10. To implement.
  • the circuit configuration of the in-vehicle power conversion system 1 of the present embodiment is the same as the circuit configuration of the in-vehicle power conversion system 1 of the first embodiment.
  • control device 80 of the present embodiment will be described with reference to FIG.
  • FIG. 7 is a flowchart showing inverter control processing in the control device 80. 7, the same reference numerals as those in FIG. 2 indicate the same steps, and the description thereof is omitted.
  • the control device 80 of the present embodiment executes inverter control processing according to the flowchart of FIG. 7 instead of FIG.
  • the execution of the inverter control process of this embodiment is started when a command for starting the three-phase AC motor 2 is received from the electronic control unit 90.
  • step 200 the control device 80 starts the filter resistance fault inspection mode.
  • step 110 the control device 80 switches the transistors SW1, SW2, SW3, SW4, SW5, and SW6 of the inverter circuit 10 to generate a pulse voltage from the inverter circuit 10 to the stator coil of the three-phase AC motor 2. Output.
  • the pulse control unit is realized.
  • the frequency fp of the pulse voltage is set so as to function as a trigger for generating resonance in the closed circuit 25 in order to check whether or not the resistance element 32 has failed.
  • the resonance frequency of the closed circuit 25 when an open failure occurs in the resistance element 32 is fo
  • the resonance frequency of the closed circuit 25 when a short-circuit failure occurs in the resistance element 32 is fs.
  • “resonance frequency fo” and “resonance frequency fs” are employed as the frequency fp of the pulse voltage.
  • the inverter circuit 10 when the control device 80 outputs a pulse voltage from the inverter circuit 10 in the filter resistance fault inspection mode, the inverter circuit 10 is set so as not to generate a rotational force from the stator coil of the three-phase AC motor 2 to the rotor. It is desirable to control.
  • step 103 the filter resistance current is detected by the current sensor 82, and the detected filter resistance current is acquired through the detection circuit 60.
  • Step 104a whether or not the resistance element 32 is normal is determined by determining whether or not the effective value of the acquired filter resistance current is within the range between the upper limit value Ya and the lower limit value Yb. It will be determined whether or not.
  • Predetermined values are set as the upper limit value Ya and the lower limit value Yb in the present embodiment, respectively.
  • the effective value of the filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb, it is determined that the resistance element 32 is normal and YES is determined in step 104.
  • step 114 that is, the start control unit
  • the drive circuit 70 is controlled by the inverter circuit 10 to transfer the three-phase AC current from the inverter circuit 10 to the three-phase AC motor 2. Shed. For this reason, the three-phase AC motor 2 is started.
  • step 106 the electronic control unit 90 is notified that the resistance element 32 has failed.
  • step 107 a filter resistance protection control mode for controlling the drive circuit 70 and limiting the operation of the inverter circuit 10 is performed.
  • the control device 80 detects the filter resistance current by the current sensor 82 before the three-phase AC motor 2 (that is, the inverter circuit 10) is started, and the detected filter resistance. Current is acquired through the detection circuit 60. When the effective value of the acquired filter resistance current is out of the range between the upper limit value Ya and the lower limit value Yb, the control device 80 determines that a failure has occurred in the resistance element 32 and the inverter circuit 10. The filter resistance protection control mode that restricts the operation of is performed. As a result, it is possible to prevent resonance from occurring in the closed circuit 25 before the inverter circuit 10 is activated.
  • the circuit configuration of the in-vehicle power conversion system 1 of the present embodiment is the same as the circuit configuration of the in-vehicle power conversion system 1 of the first embodiment.
  • control device 80 of the present embodiment will be described with reference to FIG.
  • FIG. 8 is a flowchart showing inverter control processing in the control device 80. 8, the same reference numerals as those in FIG. 7 indicate the same steps, and the description thereof is omitted.
  • the control device 80 of the present embodiment executes inverter control processing according to the flowchart of FIG. 8 instead of FIG.
  • step 210 it is determined whether the inverter circuit 10 (that is, the three-phase AC motor 2) is stopped. By executing step 210, a stop determination unit is realized.
  • Step 210 when the inverter circuit 10 (that is, the three-phase AC motor 2) is operating, it is determined as NO in Step 210, and the process returns to Step 210. For this reason, as long as the inverter circuit 10 is operating, NO determination is repeated in step 210.
  • Step 210 the filter resistance fault inspection mode is started.
  • step 112 the transistors SW1, SW2, SW3, SW4, SW5, and SW6 of the inverter circuit 10 are switched to output a pulse voltage from the inverter circuit 10 to the stator coil of the three-phase AC motor 2.
  • step 103 the filter resistance current is detected by the current sensor 82, and the detected filter resistance current is acquired through the detection circuit 60.
  • step 104 the resistance element 32 is normal by determining whether or not the effective value of the acquired filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb. It will be determined whether or not. This ends the filter resistance fault inspection mode.
  • the effective value of the filter resistance current is within a certain range between the upper limit value Ya and the lower limit value Yb, it is determined that the resistance element 32 is normal and YES is determined in step 104.
  • step 106 the electronic control unit 90 is notified that the resistance element 32 has failed. Accordingly, in step 107, a filter resistance protection control mode for controlling the drive circuit 70 and limiting the operation of the inverter circuit 10 is performed.
  • the control device 80 detects the filter resistance current by the current sensor 82 while the three-phase AC motor 2 is stopped, and acquires the detected filter resistance current through the detection circuit 60. .
  • the control device 80 determines that the resistance element 32 has failed and determines that the inverter circuit 10 Implement filter resistance protection control mode to limit operation.
  • the resistance element 32 is disposed between the negative electrode of the smoothing capacitor 21 and the negative electrode of the smoothing capacitor 20.
  • a resistive element 32 is arranged in series with the smoothing capacitor 21 between the positive electrode and the negative electrode of the high-voltage power supply 3.
  • control device 80 stops the flow of the three-phase AC current from the inverter circuit 10 to the stator coil of the three-phase AC motor 2 as the filter resistance protection control mode.
  • An example was described. However, instead of this, the following (c) and (d) may be used.
  • the current value of the three-phase AC current flowing from the inverter circuit 10 to the stator coil of the three-phase AC motor 2 is set to a predetermined value or less. Thereby, when the resistance element 32 is out of order, the current flowing through the electromagnetic coil 31 is reduced, and the resonance in the closed circuit 25 is suppressed.
  • the relay unit 40 opens between the high voltage power supply 3 and the closed circuit 25. For this reason, since supply of electric power from the high voltage power supply 3 to the closed circuit 25 is stopped, resonance in the closed circuit 25 is suppressed.
  • the first electric device includes the inverter circuit 10, the three-phase AC motor 2, and the compression mechanism 2b has been described.
  • the first electric device may be constituted by electric devices other than the inverter circuit 10, the three-phase AC motor 2, and the compression mechanism 2b.
  • the example in which the electric device 50 including the electric motor for traveling and the driving circuit for the electric motor for driving the electric motor for traveling is described as the second electric device.
  • the second electric device may be configured by an electric device other than the traveling motor and the driving circuit for the traveling motor.
  • N ⁇ resonance frequency fo and “N ⁇ resonance frequency fs” may be set as the frequency fp of the pulse voltage.
  • the closed circuit 25 is configured by the electromagnetic coil, the resistance element 32, and the smoothing capacitors 20 and 21 has been described, but instead, the closed circuit including the electric device 50 is included. 25 may be configured.
  • an electromagnetic coil hereinafter referred to as an additional electromagnetic coil
  • the electric device 50 and the additional electromagnetic coil are connected.
  • the closed circuit 25 may also be configured.
  • the closed circuit 25 may be configured including the devices that configure the first electric device.
  • the example in which the current sensor 82 is used to detect the filter resistance current has been described.
  • the voltage between the positive electrode and the negative electrode of the resistance element 32 may be detected by a voltage sensor, and the current flowing through the resistance element 32 may be obtained based on the detected voltage.
  • step 104 it is determined whether or not the current value detected by the current sensor 82 is within a certain range between the upper limit value Ya and the lower limit value Yb.
  • the following may be used instead.
  • a mean square value or a mean time average of a plurality of sampling values of the detected value of the current sensor 82 is obtained, and whether or not the obtained average value is within a range between the upper limit value Ya and the lower limit value Yb. Determine whether.
  • the voltage sensor 83 may detect between the positive electrode and the negative electrode of the resistance element 32. Then, according to the detection value of the voltage sensor 83, it is determined whether or not the fluctuation value of the interelectrode voltage, which is the voltage between the positive electrode and the negative electrode of the resistance element 32, is out of a certain range. It is determined whether or not 32 is out of order.
  • the voltage sensor 83 detects between the positive electrode and the negative electrode of the resistance element 32 in step 101a.
  • step 102 a an interelectrode voltage that is a voltage between the positive electrode and the negative electrode of the resistance element 32 is calculated according to the detection value of the voltage sensor 83.
  • step 104a it is determined whether or not the resistance element 32 is out of order by determining whether or not the fluctuation value of the interelectrode voltage is out of a certain range.
  • steps other than steps 101a, 102a, and 104a are the same as those in the third embodiment, and a description thereof is omitted.
  • control device 80 has been described with respect to the example in which the execution of the inverter control process is started when the command for starting the three-phase AC motor 2 is received from the electronic control device 90. Instead of this, the following may be used.
  • control device 80 When the switch for starting the electric compressor is off, the control device 80 repeatedly performs the inverter control process.
  • the control device 80 receives a command for starting the three-phase AC motor 2 from the electronic control device 90, the control device 80 turns the three-phase AC motor 2 through the drive circuit 70 and the inverter circuit 10 in Step 114 of FIG. Start.
  • an electrical device that operates with a power supply voltage supplied from a DC power source, A resistance element that constitutes a circuit, and while supplying a power supply voltage of a DC power supply to an electric device, the resistance element attenuates an alternating current component of the current flowing in the closed circuit to suppress resonance in the closed circuit;
  • a filter circuit configured to supply a power supply voltage of a DC power source to an electric device even when a failure occurs, and a failure determination unit that determines whether or not the resistance element has failed.
  • a restriction control unit that restricts the operation of the electric device is provided to suppress resonance in the closed circuit.
  • the apparatus includes a state quantity detection unit that detects a state quantity indicating a voltage between the positive electrode and the negative electrode of the resistance element or a current flowing through the resistance element, and the failure determination unit includes the state quantity detection unit. Whether or not the resistance element has failed is determined based on the state quantity detected by the above.
  • the state quantity detection unit detects a state quantity indicating a current value flowing through the resistance element, and the failure determination unit determines whether the detection value of the state quantity detection unit is out of a predetermined range. By determining, it is determined whether or not the resistance element has failed.
  • the apparatus includes a current detection unit and a calculation unit
  • the electric device includes an inverter circuit that causes an alternating current to flow to the alternating current motor based on a power supply voltage from the direct current power source
  • the current detection unit includes: The AC current flowing from the inverter circuit to the AC motor is detected, the calculation unit calculates a predetermined range based on the AC current detected by the current detection unit, the failure determination unit from the predetermined range calculated by the calculation unit, It is determined whether or not the resistance element has failed by determining whether or not the detection value of the state quantity detection unit is off.
  • the predetermined range is calculated based on the alternating current flowing from the inverter circuit to the alternating current motor, it can be determined with higher accuracy whether or not the resistance element has failed.
  • the electric device includes a positive electrode and a negative electrode to which a power supply voltage from a DC power supply is applied, and the filter circuit is disposed between the positive electrode of the DC power supply and the positive electrode of the electric device.
  • the filter circuit is configured so that a power supply voltage from a DC power supply is applied to the electric device through the electromagnetic coil when the resistance element is malfunctioning.
  • the resistance element is connected between the DC power source and the electric device.
  • a smoothing capacitor that is disposed between the positive electrode and the negative electrode of the electric device and smoothes the power supply voltage from the DC power supply is provided, and the resistance element includes the positive electrode and the negative electrode of the electric device. In between, it is connected in series with a smoothing capacitor.
  • the apparatus includes a smoothing capacitor and a voltage fluctuation amount calculation unit
  • the electric device includes a positive electrode and a negative electrode to which a power supply voltage from a DC power supply is applied
  • the smoothing capacitor is an electric device Located between the positive electrode and the negative electrode, smoothes the power supply voltage from the DC power supply
  • the resistance element is connected in series with the smoothing capacitor between the positive electrode and the negative electrode of the electrical device
  • the detection unit detects a state quantity indicating a voltage between the positive electrode and the negative electrode of the resistance element
  • the voltage fluctuation amount calculation unit is configured to detect the positive electrode of the resistance element based on the state quantity detected by the state quantity detection unit.
  • the failure determination unit calculates whether or not the resistance element has failed by determining whether or not the calculated value of the voltage variation calculation unit is out of a predetermined range. Judgment That.
  • the apparatus includes a smoothing capacitor, a voltage fluctuation amount calculation unit, and a state quantity detection unit
  • the electric device includes a positive electrode and a negative electrode to which a power supply voltage from a DC power supply is applied
  • the quantity detection unit detects a state quantity indicating a voltage between the positive electrode and the negative electrode of the electric device
  • the voltage variation calculation unit calculates the positive electrode and the negative electrode of the electric device based on the detection value of the state quantity detection unit.
  • the smoothing capacitor is disposed between the positive electrode and the negative electrode of the electric device to smooth the power supply voltage from the DC power source
  • the resistance element is the positive electrode of the electric device. Is connected in series with a smoothing capacitor between the negative electrode and the negative electrode, and the failure determination unit determines whether or not the calculated value of the voltage fluctuation amount calculation unit is out of a predetermined range. Whether or not To.
  • the normal control unit when the failure determination unit determines that the resistance element is normal, the normal control unit that operates the electric device is provided.
  • the state quantity detection unit detects the state quantity of the resistance element.
  • a pulse control unit is provided, and the electrical device forms a pulse generation circuit that outputs a pulse voltage based on a power supply voltage supplied from a DC power supply, and the pulse control unit generates resonance in a closed circuit
  • the state quantity detection unit detects the state quantity of the resistance element.
  • a start control unit for starting an electric device is provided, and the pulse control unit outputs a pulse voltage as a trigger from the pulse generation circuit before the start control unit starts the electric device. Control the generation circuit.
  • the apparatus includes a stop determination unit that determines whether or not the electric device is stopped, and when the stop determination unit determines that the electric device is stopped, the pulse control unit performs a pulse as a trigger.
  • the pulse generation circuit is controlled to output a voltage from the pulse generation circuit.
  • the electrical device is a first electrical device, and the electrical system is disposed in parallel with the first electrical device between the positive electrode and the negative electrode of the DC power source and is supplied from the DC power source.
  • a second electric device that operates according to the power supply voltage to be provided.
  • the smoothing capacitor is a first smoothing capacitor
  • the electric system includes a second smoothing capacitor
  • the second electric device includes a positive electrode and a negative electrode to which a power supply voltage from a DC power supply is applied.
  • the second smoothing capacitor is disposed between the positive electrode and the negative electrode of the second electric device to smooth the power supply voltage supplied from the DC power supply, and the closed circuit includes the first smoothing capacitor and the second smoothing capacitor.
  • a capacitor is included.
  • the first electric device constitutes an electric compressor for a vehicle that is driven based on the power supply voltage of the DC power supply
  • the second electric device is a vehicle that is driven based on the power supply voltage of the DC power supply.
  • a traveling motor is configured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Inverter Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Electric Motors In General (AREA)
  • Power Conversion In General (AREA)

Abstract

La présente invention concerne un système électrique qui comprend : des dispositifs électriques (10, 2, 2b) actionnés par une tension d'alimentation électrique fournie par une alimentation électrique en courant continu (3) ; un circuit de filtre (30) qui comporte un élément de résistance (32) constituant un circuit fermé (25), et qui est configuré pour supprimer la résonance dans le circuit fermé en atténuant une composante de courant alternatif de courant circulant à travers le circuit fermé au moyen de l'élément de résistance tout en appliquant la tension d'alimentation électrique de l'alimentation électrique en courant continu aux dispositifs électriques, et également configuré pour appliquer la tension d'alimentation électrique de l'alimentation électrique en courant continu aux dispositifs électriques même lorsque l'élément de résistance est défectueux ; et une unité de détermination de défaillance (104, 104a) permettant de déterminer si l'élément de résistance est défectueux ou non.
PCT/JP2018/011489 2017-04-06 2018-03-22 Système électrique WO2018186188A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112018001900.4T DE112018001900T5 (de) 2017-04-06 2018-03-22 Elektrisches System

Applications Claiming Priority (2)

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JP2017076145A JP6798397B2 (ja) 2017-04-06 2017-04-06 電気システム
JP2017-076145 2017-04-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019207499A1 (de) * 2019-05-22 2020-11-26 Zf Friedrichshafen Ag Wechselrichter für einen elektrifizierten Antriebsstrang

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7468275B2 (ja) * 2020-09-29 2024-04-16 株式会社豊田自動織機 ノイズフィルタ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010252443A (ja) * 2009-04-13 2010-11-04 Toshiba Corp 電気車用電力供給装置
JP2012244651A (ja) * 2011-05-16 2012-12-10 Denso Corp 車載用電気システム
JP2015048800A (ja) * 2013-09-03 2015-03-16 株式会社豊田自動織機 電動圧縮機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6592425B2 (ja) 2016-12-22 2019-10-16 シャープ株式会社 粉砕トナーの製造方法、二成分現像剤の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010252443A (ja) * 2009-04-13 2010-11-04 Toshiba Corp 電気車用電力供給装置
JP2012244651A (ja) * 2011-05-16 2012-12-10 Denso Corp 車載用電気システム
JP2015048800A (ja) * 2013-09-03 2015-03-16 株式会社豊田自動織機 電動圧縮機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019207499A1 (de) * 2019-05-22 2020-11-26 Zf Friedrichshafen Ag Wechselrichter für einen elektrifizierten Antriebsstrang

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DE112018001900T5 (de) 2019-12-19
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