WO2015064409A1 - Dispositif onduleur de moteur de pilotage de véhicule - Google Patents

Dispositif onduleur de moteur de pilotage de véhicule Download PDF

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Publication number
WO2015064409A1
WO2015064409A1 PCT/JP2014/077806 JP2014077806W WO2015064409A1 WO 2015064409 A1 WO2015064409 A1 WO 2015064409A1 JP 2014077806 W JP2014077806 W JP 2014077806W WO 2015064409 A1 WO2015064409 A1 WO 2015064409A1
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Prior art keywords
inverters
capacitor
snubber capacitor
inverter device
inverter
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PCT/JP2014/077806
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English (en)
Japanese (ja)
Inventor
中島明生
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Ntn株式会社
中島明生
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Publication of WO2015064409A1 publication Critical patent/WO2015064409A1/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • 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
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/14—Synchronous machines
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/26—Driver interactions by pedal actuation
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/28—Four wheel or all wheel drive
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present invention relates to an inverter device for a vehicle drive motor.
  • an inverter device for a vehicle drive motor For example, in an electric vehicle or a vehicle that uses a motor in addition to an engine, two inverters that respectively drive two on-vehicle motors are provided.
  • the present invention relates to an inverter device for a vehicle drive motor provided in a housing.
  • FIG. 10 is a basic circuit diagram of one inverter 100 according to an example of related technology.
  • the switching element 102 of each phase of U, V, and W is configured by an IGBT module.
  • Literature relating to the structure of the inverter is mainly for driving one motor 101.
  • Patent Document 1 a technique in which two types of inverters having different actions are mounted in one housing is disclosed.
  • Some electric vehicles using in-wheel motors and four-wheel drive electric vehicles use two or more drive motors. To drive these motors, the same number of inverters as the motors are required.
  • Patent Document 2 describes that the power semiconductor is a module in which a plurality of semiconductor elements are packaged to drive one motor.
  • the two housings are 1 rather than the structure in which the two inverters are individually installed.
  • the size can be reduced by using one housing, the weight can be reduced, and the installation area can be reduced.
  • Patent Document 2 showing a configuration in which one motor driving semiconductor element is packaged does not describe how to arrange two smoothing capacitors or a plurality of snubber capacitors to be connected to each inverter. .
  • the two smoothing capacitors and the plurality of snubber capacitors are accommodated in a case, it is a limitation in reducing the size and weight of the entire inverter device, similarly to the configuration in which the two inverters are arranged in parallel.
  • An object of the present invention is to provide an inverter device for a vehicle drive motor that can reduce size, weight, and installation area in a configuration having two inverters.
  • An inverter device for a vehicle drive motor is an inverter device for a vehicle drive motor housed in a single casing, Two inverters each driving a corresponding vehicle drive motor, each inverter having a plurality of switching elements; A smoothing capacitor connected between the input terminals of the inverter; A snubber capacitor for suppressing overvoltage of the switching element, One or both of the smoothing capacitor and the snubber capacitor are shared (shared) by the two inverters.
  • the plurality of switching elements in each inverter are turned on / off, thereby converting the direct current from the battery into alternating current, and driving and controlling each motor. Since the two inverters are housed in one housing, the entire apparatus can be reduced in size, weight can be reduced, and the installation area can be reduced as compared with the structure in which the two inverters are individually installed.
  • the number of parts is reduced and the size is further reduced as compared with a structure in which two inverters are simply arranged in one housing.
  • the weight can be reduced.
  • the smoothing capacitor suppresses a surge voltage due to on / off of the switching element, and is provided at the input portion of the power supply. Therefore, even when the two inverters are shared, the function can be obtained without causing any trouble.
  • the snubber capacitor suppresses the voltage across the switching element from becoming a high voltage, and even if this is shared by two inverters, the function can be obtained without causing any trouble. In this way, two inverters are housed in one housing, and a smoothing capacitor or a snubber capacitor is shared by the two inverters, so that the size and weight can be reduced, and the installation area can be reduced. I can plan.
  • each inverter is composed of a three-phase power module that combines the plurality of switching elements,
  • the snubber capacitor may be provided for each power module.
  • the snubber capacitor when the snubber capacitor is shared by the two inverters, the snubber capacitor may be shared between the power modules of the two inverters.
  • each inverter is composed of a three-phase power module in which the plurality of switching elements are combined, One snubber capacitor is provided for the three-phase power module; When the snubber capacitor is shared by the two inverters, the one snubber capacitor may be shared between the two inverters.
  • bus bar for applying a direct current to the three-phase power module of the two inverters
  • the bus bar and the snubber capacitor may be arranged in the casing, and the inverters may be arranged on both sides of the bus bar and the snubber capacitor so that the power modules are positioned symmetrically.
  • the noise suppression effect is high. Since the bus bar can be shortened, the size can be further reduced and the weight can be reduced accordingly. Further, by arranging the bus bar and the snubber capacitor in a concentrated manner on a line passing through the substantially center of the housing, the operation of mounting them can be quickly and easily performed without interfering with other components.
  • a capacitor having the functions of both the snubber capacitor and the smoothing capacitor may be provided, and the capacitor may be shared by the two inverters. Both the snubber capacitor and the smoothing capacitor can be connected between both input terminals of the inverter, and are connected in parallel to each other.
  • the smoothing capacitor cancels, for example, an inductance having a large capacity and a relatively low frequency.
  • the snubber capacitor has a smaller capacity than the smoothing capacitor and has a relatively high frequency characteristic.
  • both capacitors have different functions, one capacitor can be used in combination. When such a capacitor having two functions is used, it is possible to further reduce the size and weight by reducing the number of parts as compared with a configuration in which a snubber capacitor and a smoothing capacitor are provided independently.
  • FIG. 1 is a block diagram schematically showing a drive unit and the like of a vehicle equipped with an inverter device for a vehicle drive motor according to a first embodiment of the present invention. It is a top view which shows the structure of the principal part of the inverter apparatus for vehicle drive motors shown in FIG. It is the fracture
  • FIG. 1 is a block diagram schematically showing a drive unit and the like of a vehicle equipped with a motor inverter device 10 according to this embodiment.
  • This vehicle is a two-wheel drive electric vehicle in which left and right rear wheels 2 and 2 of a vehicle body 1 are drive wheels and left and right front wheels 3 and 3 are driven wheels. The front wheels 3 and 3 are steering wheels.
  • the vehicle includes motors 4 and 4 that apply driving force to the left and right drive wheels.
  • Each motor 4 is composed of, for example, a three-phase synchronous motor.
  • the rotation of each motor 4 is transmitted to the drive wheel 2 via the speed reducer 5 and the wheel bearing 6.
  • Each motor 4 is partially or entirely disposed in the drive wheel 2.
  • An in-wheel motor drive device 7 including a motor 4, a speed reducer 5, and a wheel bearing 6 is configured.
  • the left and right driven wheels 3, 3 and the left and right driving wheels 2, 2 have a brake mechanism 8 for the driven wheels that applies a braking force to the driven wheels 3, 3 and the driving wheels 2, 2 by a brake operation by the driver.
  • Brake mechanisms 9 and 9 for driving wheels are provided, respectively.
  • An ECU (also referred to as VCU) 11 that is a high-order control means of the motor inverter device 10 reads an operation angle based on an accelerator operation by a driver, converts the operation angle into a torque command, and converts the torque command to a motor. Command to the inverter device 10.
  • the motor inverter device 10 converts the electric power from the battery Bt mounted on the vehicle into a three-phase alternating current based on the torque command and controls the motors 4 and 4. As a result, the left and right motors 4 and 4 can be driven to drive the vehicle.
  • FIG. 2 is a plan view showing a structure of a main part of the motor inverter device 10, and FIG. 3 is a cutaway side view in which a part of the motor inverter device 10 is broken.
  • the motor inverter device 10 includes a housing 12, power circuit units 20 and 20 each including two three-phase inverters 13 and 13, and these power circuit units 20. , 20 and a motor control unit (not shown).
  • Each power circuit unit 20 includes, in addition to the power modules 17, 18, 19, for example, a PWM driver (not shown) that controls the power modules 17, 18, 19.
  • the PWM driver performs pulse width modulation on the input current command and gives an on / off command to each of the plurality of switching elements.
  • Each of the power modules 17, 18 and 19 has a switching element on the high side and a switching element on the low side of each phase.
  • the motor inverter device 10 further includes a bus bar 14, a snubber capacitor 15, water cooling units 16 and 16, and a smoothing capacitor 25.
  • the motor control unit is composed of a computer, a program executed on the computer, and an electronic circuit.
  • the motor control unit converts the current control command into an electric current command according to an acceleration / deceleration command or the like given by an ECU serving as a host control means. A current command is given to the power circuit units 20 and 20.
  • the motor control unit may be housed in the housing 12 or may be provided outside the housing.
  • One housing 12 accommodates two three-phase inverters 13 and 13. These two inverters 13 and 13 are composed of power modules 17 to 19 for U, V, and W phases each combining a plurality of switching elements (described later), and drive the motors 4 and 4, respectively. As shown in FIG. 2, in this example, the motor for the right driving wheel is driven by the inverter 13 in the upper half of the figure, and the motor for the left driving wheel is driven by the inverter 13 in the lower half of the figure.
  • the two inverters 13 and 13 share one smoothing capacitor 25 described later.
  • the bus bar 14 has a + (plus) power source bus bar 14a and a-(minus) power source bus bar 14b, and applies a direct current from the battery to the power modules 17 to 19 of the inverters 13 and 13, respectively.
  • the snubber capacitor 15 suppresses the voltage across the switching element from becoming a high voltage and suppresses the overvoltage of the switching element.
  • three snubber capacitors 15 are provided for each of the inverters 13 and 13, and a total of six snubber capacitors 15 are provided for the entire inverter device.
  • Each snubber capacitor 15 is configured in a rectangular parallelepiped shape, for example.
  • a snubber capacitor 15 is connected in parallel to each of the U, V, and W phase power modules 17 to 19.
  • the bus bar 14 and the snubber capacitor 15 are arranged on a line passing through the center of the housing 12.
  • the inverters 13 and 13 are arranged so that the power modules 17 to 19 are positioned symmetrically.
  • Three snubber capacitors 15 connected to one inverter 13 are arranged at a predetermined interval along a direction parallel to the direction in which the power modules 17 to 19 of each phase of the inverter 13 are arranged.
  • V and W phase power modules 17, 18 and 19 are connected adjacent to each other.
  • One snubber capacitor 15 connected to the U-phase power module 17 in one inverter 13 and one snubber capacitor 15 connected to the U-phase power module 17 in the other inverter 13 are adjacent to each other.
  • Snubber capacitors 15 and 15 connected to the V-phase power modules 18 and 18 respectively are also arranged in the center in the figure on a line passing through the center of the housing 12 adjacent to each other.
  • Snubber capacitors 15, 15 connected to the W-phase power modules 19, 19, respectively, are also arranged on the right side in the figure on a line passing through the center of the casing 12 adjacent to each other.
  • the minus power bus bar 14b in the bus bar 14 is constructed over the upper surface of each snubber capacitor 15 and is electrically connected to each snubber capacitor 15, and each of the power modules 17-19. Electrically connected to the terminal end.
  • the + power supply bus bar 14a is installed on the upper surface of each snubber capacitor 15 via a spacer 23 and is electrically connected to each snubber capacitor 15, and at the terminal ends of each power module 17-19 via the spacer 23. Arranged and electrically connected.
  • Two water cooling units 16 and 16 for cooling the power circuit units 20 and 20 including the respective power modules 17 to 19 are provided on both sides of the housing 12 with the snubber capacitor 15 interposed therebetween.
  • the snubber capacitor 15 is provided between the two water cooling units 16 and 16.
  • the water cooling unit 16 at each location includes, for example, a flow path 16 a that passes through the inside of the housing and a cooling fin 16 b that is provided near the flow path of the housing 12.
  • the flow paths 16a and 16a of the two water cooling sections 16 and 16 are communicated, and the cooling water can be circulated along the flow paths 16a and 16a by a water cooling section drive source (not shown). Due to the circulating cooling water, the temperature around the water cooling parts 16 and 16 is lowered, and the cooling effect of the snubber condenser 15 can be expected.
  • FIG. 4 is a circuit diagram of the motor inverter device 10.
  • Each phase power module 17 to 19 in one inverter 13 includes, for example, two insulated gate bipolar transistors (abbreviation: IGBT), and has a total of six IGBTs per inverter 13.
  • IGBTs are normally supplied as IGBT modules housed in a package called 6in1 or 2in1. In this embodiment, for example, a 2-in-1 IGBT module is applied.
  • a 2-in-1 IGBT module in the U-phase is a power module 17 in which two IGBTs 17H and 17L in one inverter 13 and two diodes 24 and 24 connected to the IGBTs 17H and 17L are combined into one package.
  • the power modules 18 and 19 having the same structure are used for the other V-phase and W-phase IGBTs in the inverter 13.
  • the 6in1 is an IGBT module in which six IGBTs in one inverter 13 and six diodes 24 connected to each IGBT are packaged, and can drive one motor.
  • An IGBT module other than 6 in 1 or 2 in 1 may be applied.
  • a snubber capacitor 15 is connected in parallel to each of the U, V, and W phase power modules 17 to 19 in one inverter 13.
  • One smoothing capacitor 25 is connected in parallel between the input terminals of the snubber capacitors 15 and 15 connected to the input terminal side of the U-phase power module 17 in each inverter 13.
  • the one smoothing capacitor 25 is connected between the input terminals of the two inverters 13 and 13 and cancels the inductance of the wiring near each switching element. Thereby, it can suppress that a surge voltage generate
  • the two inverters 13 and 13 can share one smoothing capacitor 25. That is, one smoothing capacitor 25 can act on both the two inverters 13 and 13. As shown in FIG. 2, the smoothing capacitor 25 is accommodated above the snubber capacitor 15 and the bus bar 14 in the housing 12, for example.
  • each smoothing capacitor 25 is not shared but each inverter 13 is provided with a smoothing capacitor. It is advantageous in terms of weight, cost, and installation area compared to the provision. Even when the two inverters 13 and 13 share one smoothing capacitor 25, it is not always necessary to double the capacity of the smoothing capacitor 25. When the capacity of the smoothing capacitor 25 is less than twice, it is further advantageous in terms of weight, cost, and installation area.
  • the smoothing capacitor 25 is composed of, for example, an electrolytic capacitor or a film capacitor, and cancels ripples and noise with a large capacity and a relatively low frequency. Since the low frequency is not easily affected by the inductance, the smoothing capacitor 25 can be installed slightly away from the IGBT, and the versatility of the installation location is high.
  • each snubber capacitor 15 should be installed as close as possible to the IGBT to shorten the wiring length between them.
  • a plurality of switching elements in each of the inverters 13 and 13 are turned on / off, thereby converting a direct current from the battery Bt into a three-phase alternating current, and driving and controlling the respective motors 4 and 4. Since the two inverters 13 and 13 are accommodated in one housing 12, the entire apparatus can be reduced in size, weight can be reduced, and the installation area can be reduced as compared with the structure in which the two inverters are individually installed. be able to.
  • the two inverters 13 and 13 share one smoothing capacitor 25, the number of parts can be reduced and the size and weight can be further reduced as compared with a structure in which two inverters are simply arranged in one housing. Can be planned.
  • the smoothing capacitor 25 suppresses a surge voltage caused by turning on / off of the switching element, and is provided at the input portion of the power supply. Therefore, even when the two inverters 13 and 13 are shared, the function can be obtained without causing any trouble.
  • the bus bar 14 and the snubber capacitor 15 are arranged in the housing 12, and the inverters 13 and 13 are arranged on both sides of the bus bar 14 and the snubber capacitor 15 so that the power modules 17 to 19 are positioned symmetrically. Therefore, the distance between the snubber capacitor 15 and each of the power modules 17 to 19 can be minimized, and the inductance component of the bus bar 14 is minimized. Thus, the noise suppression effect is high. Since the bus bar 14 can be shortened, the size can be further reduced and the weight can be reduced accordingly. Further, by arranging the bus bar 14 and the snubber capacitor 15 in a concentrated manner between the two inverters 13 and 13, the operation of mounting them can be performed quickly and easily without interfering with other components. .
  • a motor inverter device will be described.
  • the same reference numerals are assigned to the portions corresponding to the matters described in the preceding forms in each embodiment, and overlapping descriptions are omitted.
  • the other parts of the configuration are the same as those described in advance unless otherwise specified. The same effect is obtained from the same configuration.
  • the embodiments can be partially combined as long as the combination does not hinder.
  • FIG. 5 is a plan view showing the structure of the main part of the motor inverter device 10A according to the second embodiment
  • FIG. 6 is a side view of the motor inverter device 10A
  • FIG. It is a circuit diagram of the inverter device 10A.
  • all the three snubber capacitors 15 may be shared by the two inverters 13 and 13. That is, the snubber capacitor 15 may act on both the two inverters 13 and 13.
  • the six snubber capacitors 15 used in the first embodiment are omitted to three. be able to.
  • one snubber capacitor 15 is connected in parallel to the two U-phase power modules 17 and 17.
  • one snubber capacitor 15 is connected in parallel to the two V-phase power modules 18 and 18.
  • one snubber capacitor 15 is connected in parallel to the two W-phase power modules 19 and 19.
  • the number of the snubber capacitors 15 can be reduced by three as compared with the first embodiment, and the number of parts, weight, In addition, the installation area can be reduced.
  • the snubber capacitor 15 suppresses the voltage across the switching element from becoming a high voltage, and even if these are shared by the two inverters 13 and 13, the function of the snubber capacitor can be obtained without causing any trouble.
  • the two inverters 13 and 13 are accommodated in one housing 12 and the snubber capacitor 15 is shared by the two inverters 13 and 13, so that the size and weight can be reduced. The area can be reduced.
  • FIG. 8 is a circuit diagram of a motor inverter device 10B according to the third embodiment.
  • one snubber capacitor 15 may be shared by two inverters 13 and 13. In this case, since only one snubber capacitor 15 is required for the entire inverter device, the number of parts, weight, and installation area can be further reduced as compared with the configuration of FIG.
  • FIG. 9 is a circuit diagram of a motor inverter device 10C according to the fourth embodiment.
  • a capacitor 26 having the functions of both the snubber capacitor 15 and the smoothing capacitor 25 is arranged instead of the snubber capacitor 15, and this capacitor 26 is replaced with two inverters 13. , 13 to share.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne, dans une configuration avec deux onduleurs, un dispositif onduleur de moteur de pilotage de véhicule, dont la taille et le poids peuvent être réduits et dont l'aire d'installation peut être réduite. Ce dispositif onduleur de moteur de pilotage de véhicule (10) est constitué de deux onduleurs (13, 13) permettant de piloter les moteurs respectifs de pilotage de véhicule correspondants (4, 4), chaque onduleur (13) comprenant : un condensateur de lissage (25) connecté entre les bornes d'entrée des onduleurs (13, 13) ayant chacun une pluralité d'éléments de commutation ; et un condensateur de protection (15) permettant de supprimer une surtension se produisant au niveau des éléments de commutation. Le condensateur de lissage (25) ou le condensateur de protection (15), ou les deux, sont communs aux deux onduleurs (13, 13).
PCT/JP2014/077806 2013-10-31 2014-10-20 Dispositif onduleur de moteur de pilotage de véhicule WO2015064409A1 (fr)

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JP2013-226168 2013-10-31
JP2013226168A JP2015089245A (ja) 2013-10-31 2013-10-31 車両駆動モータ用インバータ装置

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EP3288357A1 (fr) * 2016-08-26 2018-02-28 Deere & Company Ensemble inverseur électronique avec condensateur d'amortissement intégré
US9979320B2 (en) 2016-08-26 2018-05-22 Deere & Company Electronic inverter assembly
WO2021151952A1 (fr) * 2020-01-31 2021-08-05 Syddansk Universitet Module de puissance doté d'un condensateur d'amortissement en aluminium intégré
US11509232B2 (en) * 2018-02-16 2022-11-22 Mitsubishi Electric Corporation Power converter and air-conditioning apparatus using the same

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JP6500285B1 (ja) * 2017-10-19 2019-04-17 本田技研工業株式会社 電力変換装置

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EP3288357A1 (fr) * 2016-08-26 2018-02-28 Deere & Company Ensemble inverseur électronique avec condensateur d'amortissement intégré
US9979320B2 (en) 2016-08-26 2018-05-22 Deere & Company Electronic inverter assembly
US11509232B2 (en) * 2018-02-16 2022-11-22 Mitsubishi Electric Corporation Power converter and air-conditioning apparatus using the same
WO2021151952A1 (fr) * 2020-01-31 2021-08-05 Syddansk Universitet Module de puissance doté d'un condensateur d'amortissement en aluminium intégré

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