In an apparatus, a determiner determines whether a two-MG frequency ratio of a first electrical frequency of a first MG to a second electrical frequency of a second MG is within a specific frequency-ratio range. The specific frequency-ratio range includes 1/6n where n is an integer excluding zero. An update-cycle controller controls an update cycle of a command voltage according to the determined result such that the update cycle during a specific drive of the first MG is longer than the update cycle during a usual drive of the first MG while a cycle of a carrier signal is maintained during both the usual and specific drives. The specific drive represents drive of the first MG while the two-MG frequency ratio is within the specific frequency-ratio range. The usual drive represents drive of the first MG while the two-MG frequency ratio is out of the specific frequency-ratio range.


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    Titel :

    Apparatus for controlling first and second rotary electric machines


    Beteiligte:

    Erscheinungsdatum :

    21.03.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / 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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