Phase currents of an inverter-driven electric machine are measured by mounting phase conductors of each respective phase current into a central passage of a respective flux core. A plurality of current sensors are mounted into a gap of each respective flux core to generate a respective plurality of current signals for each phase current. The Hall-effect devices are connected to a plurality of multi-channel op amp devices for conditioning the current signals such that each set of Hall-effect devices is connected to a different one of the op amp devices and such that each op amp device receives one current signal corresponding to each phase current. Thus, a valid conditioned current signal corresponding to each phase conductor is generated by the op amp devices unless there are multiple simultaneous failures of the Hall-effect devices and the op amp devices.


    Access

    Download


    Export, share and cite



    Title :

    Reliable current sensing for inverter-controlled electronic machine


    Contributors:

    Publication date :

    2016-09-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / 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



    RELIABLE CURRENT SENSING FOR INVERTER-CONTROLLED ELECTRIC MACHINE

    GARCHA JASWANT S | European Patent Office | 2016

    Free access

    Reliable inverter systems

    Nagano, S. | NTRS | 1979


    Electrical machine with integrated current source inverter

    ROZMAN GREGORY L / GIERAS JACEK F | European Patent Office | 2020

    Free access

    Reliable detection of open-circuit faults in cascaded H-bridge multilevel inverter via current residual analysis

    Thantirige, Kalpani / Mukherjee, Suvajit / Zagrodnik, Michael A. et al. | IEEE | 2017