To provide a technique enabling a quick identification of a current sensor to which an abnormality has occurred in processing for correctly identifying the current sensor where the abnormality has occurred.SOLUTION: A motor drive apparatus includes a U-phase current sensor for detecting a current value of three-phase AC, a V-phase current sensor, a W-phase current sensor, and a control device. The control device, using a predetermined current characteristic and current values detected by the U-phase current sensor, V-phase current sensor and W-phase current sensor, executes first abnormality identification processing for identifying a current sensor that does not detect a current value normally; and executes, in a case where the first abnormality identification processing does not identify a current sensor that does not detect a current value normally, second abnormality identification processing for identifying a current sensor that does not detected a current value normally by using a sum of square of the current values detected by the U-phase current sensor, V-phase current sensor and W-phase current sensor.SELECTED DRAWING: Figure 2

    【課題】本明細書は、異常が発生している電流センサを正確に特定する処理において、異常が生じている電流センサを早期に特定し得る技術を提供する。【解決手段】モータ駆動装置は、三相交流の電流値を検出するU相電流センサ、V相電流センサ、W相電流センサ及び制御装置を備え、制御装置は、U相電流センサ、V相電流センサ、W相電流センサによって検出される電流値と、予め決められた電流特性と、を用いて、正常に電流値を検出していない電流センサを特定する第1異常特定処理と、第1異常特定処理によって正常に電流値を検出していない電流センサが特定されない場合に、U相電流センサ、V相電流センサ、W相電流センサによって検出される電流値の二乗和を用いて、正常に電流値を検出していない電流センサを特定する第2異常特定処理と、を実行する。【選択図】図2


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    Title :

    ELECTRIC-AUTOMOBILE MOTOR DRIVE APPARATUS


    Additional title:

    電気自動車のモータ駆動装置


    Contributors:
    OI SHOHEI (author)

    Publication date :

    2023-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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