A controlling apparatus for a power converter 10 such as an inverter that operates a plurality of induction motors 41 parallely connected to each other and mechanically coupled to each other includes: current detection means 30 for detecting an output current of the power converter 10; current control means 90 for generating a voltage command value to make the current detection value equal to a current command value; voltage command amplitude calculation means 100 for calculating an amplitude of the voltage command value; storage means 110 for storing, for each sampling period, a combination of a primary frequency of the induction motors 41 and the amplitude of the voltage command value at that time; and gradient detection means 120 for calculating, according to stored information from the storage means 110, a value that is an increase in the amplitude of the voltage command value that is divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors 41 include at least one induction motor 41 whose phase sequence includes incorrect wiring with respect to the power converter 10.


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    Title :

    ELECTRIC VEHICLE AND DEVICE FOR CONTROLLING POWER CONVERTER


    Additional title:

    ELEKTROFAHRZEUG UND VORRICHTUNG ZUR STEUERUNG EINES STROMWANDLERS
    VÉHICULE ÉLECTRIQUE ET DISPOSITIF DE COMMANDE D'UN CONVERTISSEUR DE PUISSANCE


    Contributors:

    Publication date :

    2016-10-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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



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