To provide a motor controller capable of restraining generation of noise in the output from a phase voltage detection circuit during normal operation.SOLUTION: An ECU 12 includes a drive circuit 32 having a series circuit of upper stage side switching elements 51, 53, 55 and lower stage side switching elements 52, 54, 56 provided for every multiple phases, where the junction points of the upper stage side switching elements and the lower stage side switching elements, in the series circuit of each phase, are connected with an electric motor 18. Furthermore, the ECU 12 includes a microcomputer 31 for controlling a drive circuit 32, phase voltage detection circuits 34u, 34v, 34w of respective phases connected between the junction points of respective phases and microcomputer 31, and switch circuits 33u, 33v, 33w connected between the junction points of respective phases and the corresponding phase voltage detection circuits 34u, 34v, 34w.SELECTED DRAWING: Figure 2
【課題】通常動作時において、相電圧検出回路の出力にノイズが発生するのを抑制できるモータ制御装置を提供する。【解決手段】ECU12は、複数の相毎に設けられた上段側スイッチング素子51,53,55と下段側スイッチング素子52,54,56との直列回路を含み、相毎の直列回路における上段側スイッチング素子と下段側スイッチング素子との接続点が電動モータ18に接続されている駆動回路32を含む。また、ECU12は、駆動回路32を制御するマイクロコンピュータ31と、相毎の接続点それぞれとマイクロコンピュータ31との間に接続された相毎の相電圧検出回路34u,34v,34wと、相毎の接続点とそれに対応する相の相電圧検出回路34u,34v,34wとの間に接続された相毎のスイッチ回路33u,33v,33wとを含む。【選択図】図2
MOTOR CONTROLLER
モータ制御装置
2019-06-13
Patent
Electronic Resource
Japanese
Motor controller, motor comprising motor controller and vehicle
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