To provide a capacitor current estimation method for a high voltage circuit for driving a motor.SOLUTION: A current estimation device, for estimating a capacitor current in a high voltage circuit for driving a motor, calculates a voltage usage rate using an input voltage of an inverter included in the high voltage circuit and revolution of the motor, calculates a first constant by applying the voltage usage rate to a predetermined first formula, and calculates a capacitor current of a capacitor included in the high voltage circuit by multiplying the first constant by a motor current effective value.SELECTED DRAWING: Figure 3

    【課題】モータを駆動させる高電圧回路のキャパシタ電流の推定方法を提供する。【解決手段】モータを駆動させる高電圧回路のキャパシタ電流を推定する電流推定装置であって、高電圧回路に含まれるインバータの入力電圧とモータの回転数とを用いて電圧利用率を演算し、電圧利用率を予め定められた第1演算式に適用して第1定数を演算し、第1定数にモータ電流実効値を乗じて高電圧回路に含まれるコンデンサのキャパシタ電流を演算する、電流推定装置。【選択図】図3


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    Title :

    CURRENT ESTIMATION DEVICE, MOTOR COMPRESSOR, CURRENT ESTIMATION METHOD AND MOTOR CURRENT EFFECTIVE VALUE ESTIMATION METHOD


    Additional title:

    電流推定装置、電動圧縮機、電流推定方法及びモータ電流実効値推定方法


    Contributors:

    Publication date :

    2019-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / 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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