PROBLEM TO BE SOLVED: To provide a vehicle motor drive device capable of quickly detecting occurrence of a failure of a motor or the like of the motor drive device, and suppressing cost by performing the detection without adding a dedicated sensor.SOLUTION: Failure occurrence determination means 15 comprises: a rotor angle measurement unit 16 for obtaining a measured value of a motor rotor angle phase with respect to a wheel 20 by a motor rotor rotation angle detected by an angle sensor 21 mounted on an electric motor 2 and wheel rotation information detected by a speed sensor 22; a rotor angle estimation unit 17 for obtaining an estimated value of the motor rotor angle phase with respect to the wheel 20 by a motor torque command value input to a motor controller 12; and a failure determination unit 19 for determining that a failure has occurred in the motor drive device 1 when a difference between the measured value and the estimated value of the motor rotor angle phase is equal to or greater than a threshold value.SELECTED DRAWING: Figure 1
【課題】 モータ駆動装置のモータ等の故障の発生を迅速に検出でき、かつ専用のセンサを追加することなく行えて、コストを抑制することができる車両用モータ駆動装置を提供する。【解決手段】 故障発生判定手段15は、電動モータ2に装備される角度センサ21で検出されるモータロータ回転角度、および速度センサ22で検出される車輪回転情報より車輪20に対するモータロータ角度位相の計測値を求めるロータ角度計測部16を備える。モータコントローラ12へのモータトルク指令値より、車輪20に対するモータロータ角度位相の推定値を求めるロータ角度推定部17を備える。前記モータロータ角度位相の計測値と前記推定値との差分が閾値以上であると前記モータ駆動装置1に故障が発生したと判定する故障判定部19を有する。【選択図】 図1
VEHICLE MOTOR DRIVE DEVICE AND VEHICLE EQUIPPED WITH THE SAME
車両用モータ駆動装置およびこれを搭載した車両
2017-03-09
Patent
Electronic Resource
Japanese
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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