PROBLEM TO BE SOLVED: To supply power for sensor drive through two lines to current sensors included in a voltage converter and two inverters, respectively, and to maintain a high traveling capability even if any one line is disconnected, in a power converter for an electric vehicle including the voltage converter and the two inverters.SOLUTION: A power converter 10 includes: a first inverter 13a for a first motor 8a that drives wheels; a second inverter 13b for a second motor 8b of which a gear ratio to the wheels is smaller than that of the first motor 8a; and a voltage converter 12 which boosts power of a battery and supplies the power to the first and second inverters. The first and second inverters include first and second current sensors 4 and 5, respectively, and the voltage converter includes a third current sensor 3. A first power supply line for supplying power to the first and third current sensors 4 and 3 is common, and a second power supply line for supplying power to the second current sensor 5 is provided separately from the first power supply line.SELECTED DRAWING: Figure 1

    【課題】電圧コンバータと2個のインバータを備える電動車両用の電力変換器に関し、電圧コンバータと2個のインバータの夫々が備える電流センサに対して2本の線でセンサ駆動用の電力を供給可能にするとともに、いずれか一方の線が断線しても大きな走行能力が残るようにする。【解決手段】電力変換器10は、車輪を駆動する第1モータ8a用の第1インバータ13aと、車輪までのギア比が第1モータ8aよりも小さい第2モータ8b用の第2インバータ13bと、バッテリの電力を昇圧して第1及び第2インバータに供給する電圧コンバータ12を備える。第1及び第2インバータには夫々第1及び第2電流センサ4、5が備えられており、電圧コンバータには第3電流センサ3が備えられている。第1及び第3電流センサ4、3に電力を供給する第1電力供給線が共通であり、第2電流センサ5に電力を供給する第2電力供給線が第1電力供給線とは別に備えられている。【選択図】図1


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    Title :

    POWER CONVERTER FOR ELECTRIC VEHICLE


    Additional title:

    電動車両用の電力変換器


    Contributors:

    Publication date :

    2016-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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