A method and system of operating a multi-phase electric machine includes operating an inverter to control the multi-phase electric machine. The inverter has a plurality of inverter branches including an auxiliary inverter branch. Each of the plurality of inverter branches has at least one switching device. The multi-phase electric machine has a plurality of phases, wherein each phase is controlled by a respective inverter branch of the inverter. The method and system also include determining whether a phase of the multi-phase electric machine is experiencing local phase loss, e.g., by injecting a signal into the phase and analyzing the frequency response. In response to determining that the phases of the multi-phase electric machine are experiencing the local phase loss, the methods and systems include utilizing an auxiliary inverter leg to replenish energy to the phases experiencing the local phase loss to continue operating the multi-phase electric machine.

    一种操作多相电机的方法和系统包括操作逆变器以控制多相电机。逆变器具有多个包括辅助逆变器支路的逆变器支路。多个逆变器支路中的每一个具有至少一个开关装置。多相电机具有多个相,其中每个相由逆变器的相应逆变器支路控制。该方法和系统还包括例如通过将信号注入相并分析频率响应来确定多相电机的相是否正经历局部相缺失。响应于确定多相电机的相正经历局部相缺失,该方法和系统包括利用辅助逆变器支路向正经历局部相缺失的相补充能量以继续操作多相电机。


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    Title :

    Fault tolerant inverter for local phase loss in multi-phase electrical machines


    Additional title:

    用于多相电机中的局部相缺失的容错逆变器



    Publication date :

    2023-01-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES , Systeme zum Regeln elektrischer oder magnetischer Veränderlicher / 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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