To provide a controller for a rotary electric machine capable of enhancing the whole efficiency of a rotary electric machine system.SOLUTION: A controller is provided with a voltage calculation section, a switching control section, and a limit section. The voltage calculation section calculates a voltage command value of an AC voltage supplied to MG from a target torque. The switching control section controls switching of each switching element included in an inverter so that the calculated voltage command value is supplied to the MG. The limit section limits an ON period, during which each switching element can be turned to an ON state in an electric angle half cycle of the voltage command value when a voltage utilization rate is less than a utilization rate threshold value in an inverter control, to a period shorter than a period obtained by subtracting a dead time from the electric angle half cycle of the voltage command value. When the ON period is limited, the switching control section controls switching of each switching element in the limited ON period, and carries out rectangular wave control or overmodulation control.SELECTED DRAWING: Figure 4

    【課題】回転電機システム全体の効率を向上させることが可能な回転電機の制御装置を提供する。【解決手段】制御装置は、電圧算出部と、スイッチング制御部と、制限部と、を備える。電圧算出部は、目標トルクからMGへ供給する交流電圧の電圧指令値を算出する。スイッチング制御部は、算出された電圧指令値がMGに供給されるように、インバータに含まれる各スイッチング素子のスイッチングを制御する。制限部は、インバータの制御において、電圧利用率が利用率閾値よりも小さい場合に、電圧指令値の電気角半周期において各スイッチング素子をオン状態にすることが可能なオン期間を、電圧指令値の電気角半周期からデッドタイムを差し引いた期間よりも短い期間に制限する。スイッチング制御部は、オン期間が制限された場合に、制限されたオン期間の中で各スイッチング素子のスイッチングを制御して、矩形波制御又は過変調制御を行う。【選択図】図4


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    Title :

    CONTROLLER FOR ROTARY ELECTRIC MACHINE


    Additional title:

    回転電機の制御装置


    Contributors:

    Publication date :

    2019-12-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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