An electrical system includes a multi-level traction power inverter module (TPIM), a polyphase electric machine, and a controller. The TPIM has multiple switching sets collectively operable for inverting a DC voltage on a DC voltage bus into an AC voltage on an AC voltage bus. The electric machine has (m) multiple electrical phases. Each of the (m) multiple electrical phases is connected to and driven by a respective one of the switching sets of the TPIM. The controller determines when the electric machine enters a predetermined partial-load region of operation, and, responsive to entry into the predetermined partial-load region, selectively deactivates a predetermined number (n) of the (m) multiple electrical phases. This is done via switching state signals to corresponding ones of the switching sets, with n being less than or equal to m-2.

    一种电气系统包括多电平牵引功率逆变器模块(TPIM)、多相电机和控制器。该TPIM具有多个开关组,这些开关组可共同工作将DC电压总线上的DC电压转换成AC电压总线上的AC电压。电机具有(m)多个电相。所述(m)多个电相中的每一个与TPIM的开关组中的相应一个相连并由其驱动。控制器确定电机何时进入预定的部分负载工作区域,并且响应于进入预定的部分负载区域,选择性地去激活(m)多个电相中的预定数量(n个)。这可通过发往开关组中对应开关组的开关状态信号来实现,其中n≤m‑2。


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    Title :

    Partial-load phase deactivation of polyphase electric machine


    Additional title:

    多相电机的部分负载相去激活


    Contributors:

    Publication date :

    2020-05-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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