To provide a circuit board for a motor controller capable of suppressing a dark current.SOLUTION: An inverter power supply voltage VR of a motor drive unit 5, which receives supply of drive power for an electric motor 15 from a battery BT, is estimated based on a voltage VBAT at an output terminal of an IG switch circuit 6 detected by a VM monitoring unit 18, which receives supply of a predetermined voltage and monitors a motor terminal voltage VM of each phase of the electric motor 15. As a result, a power supply breaker relay, a voltage monitoring circuit of a motor driving power supply, and the like can be deleted, and a dark current can be suppressed in combination with current consumption reduction in the VM monitoring unit 18.SELECTED DRAWING: Figure 1

    【課題】暗電流を抑制できるモータ制御装置用の回路基板を提供する。【解決手段】バッテリBTより電動モータ15の駆動電力の供給を受けるモータ駆動部5のインバータ電源電圧VRを、所定電圧の供給を受けて電動モータ15の各相のモータ端子電圧VMを監視するVM監視部18で検知されたIGスイッチ回路6の出力端の電圧VBATに基づいて推定する。これにより、電源遮断リレー、モータ駆動用電源の電圧監視回路等を削除して、VM監視部18での消費電流低減と相俟って暗電流を抑制できる。【選択図】図1


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    Title :

    CIRCUIT BOARD


    Additional title:

    回路基板


    Contributors:

    Publication date :

    2021-07-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge / 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



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