PROBLEM TO BE SOLVED: To provide a motor drive circuit capable of facilitating simplification of a circuit configuration even when it can detect an insulation resistance for each portion.SOLUTION: An insulation resistance detection part detects the quality of an insulation resistance on the anterior side to a power supply conduction switch and the quality of an insulation resistance on the posterior side to the power supply conduction switch brought into conduction, on the basis of a detection result of a voltage detection part under a shut-off state of any power supply conduction switch and a detection result of the voltage detection part under a conduction state of any power supply conduction switch.SELECTED DRAWING: Figure 4
【課題】部分ごとに絶縁抵抗の検出を行うものでありながら、回路構成を簡素化することが容易となるモータ駆動回路を提供する。【解決手段】絶縁抵抗検出部は、何れの電源導通スイッチをも遮断させた状態における電圧検出部の検出結果および何れかの前記電源導通スイッチを導通させた状態における前記電圧検出部の検出結果に基づいて、前記電源導通スイッチより前段側の絶縁抵抗の良否および導通させた前記電源導通スイッチより後段側の絶縁抵抗の良否を検出する。【選択図】図4
MOTOR DRIVE CIRCUIT, MOTOR DEVICE, AND ELECTRIC VEHICLE
モータ駆動回路、モータ装置、および電動車両
2017-09-14
Patent
Electronic Resource
Japanese
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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