The present disclosure relates to an inverter circuit (10) for an electrical AC motor (32) comprising a primary energy storage device (10), a plurality of switching stages (14), a drive control circuit (16) and an emergency control circuit (18). The emergency control circuit (18) is configured to switch on all of first or second semiconductor switches (24, 26) connected between a first or second terminal of the primary energy storage device (10), respectively and one phase line (28) of the electrical AC motor (32) in case of an abnormal condition of the drive control circuit (16). The emergency control circuit (18) is configured to provide a short-term control voltage VGSelevated to control gates (48) of the first semiconductor switches (24) or the second semiconductor switches (26) that exceeds a regular switch-on voltage VGSon provided to the control gates (48) by the drive control circuit (16) during normal operation of the inverter circuit (10).The disclosure further relates to an electrical drive (30) comprising an inverter circuit (10) as well as a method for controlling an electrical drive (30).


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    Title :

    INVERTER CIRCUIT FOR AN ELECTRICAL AC MOTOR, ELECTRICAL DRIVE AND METHOD FOR CONTROLLING AN ELECTRICAL DRIVE


    Additional title:

    WECHSELRICHTERKREIS FÜR EINEN ELEKTRISCHEN WECHSELSTROMMOTOR, ELEKTRISCHER ANTRIEB UND VERFAHREN ZUR STEUERUNG EINES ELEKTRISCHEN ANTRIEBS
    CIRCUIT D'INVERSEUR POUR UN MOTEUR ÉLECTRIQUE CA, ENTRAÎNEMENT ÉLECTRIQUE ET PROCÉDÉ DE COMMANDE D'UN ENTRAÎNEMENT ÉLECTRIQUE


    Contributors:

    Publication date :

    2024-07-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / 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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