To avoid deterioration in control stability of a motor torque at the time of a transient response in a motor drive device which performs torque control.SOLUTION: A motor drive device (200) comprises a power conversion circuit (204) which drives an AC motor, and a controller (203) which controls the power conversion circuit. The controller includes: a command current calculation unit (206) which generates a command current corresponding to a command torque to the AC motor; a current control unit (208) which performs feedback control for regulating a current to be electrified to the AC motor into a command current; and a control gain setting unit (207) by which a control gain to be used for the feedback control is calculated based on the command torque and set to the current control unit. The control gain setting unit performs control in such a manner that a time from decreasing an absolute value of the command torque to switching the control gain becomes longer than a time from increasing the absolute value of the command torque to switching the control gain.SELECTED DRAWING: Figure 2

    【課題】トルク制御を行うモータ駆動装置において、過渡応答時のモータトルクの制御安定性が悪化するのを回避すること。【解決手段】モータ駆動装置(200)は、交流モータを駆動する電力変換回路(204)と、電力変換回路を制御するコントローラ(203)と、を備え、コントローラは、交流モータに対する指令トルクに応じた指令電流を生成する指令電流演算部(206)と、交流モータに通電される電流を指令電流に調節するフィードバック制御を行う電流制御部(208)と、フィードバック制御に用いる制御ゲインを指令トルクに基づいて算出して電流制御部に設定する制御ゲイン設定部(207)と、を有する。制御ゲイン設定部は、指令トルクの絶対値が減少してから制御ゲインが切り替わるまでの時間が、指令トルクの絶対値が増加してから制御ゲインが切り替わるまでの時間よりも長くなるように制御する。【選択図】図2


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    Title :

    MOTOR DRIVE DEVICE AND ELECTRIC VEHICLE SYSTEM


    Additional title:

    モータ駆動装置、電動車両システム


    Contributors:

    Publication date :

    2020-04-23


    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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