Methods, systems and apparatus for reducing power loss in an electric motor drive system
    1.
    发明授权
    Methods, systems and apparatus for reducing power loss in an electric motor drive system 有权
    用于减少电动机驱动系统中的功率损耗的方法,系统和装置

    公开(公告)号:US08754603B2

    公开(公告)日:2014-06-17

    申请号:US13183318

    申请日:2011-07-14

    IPC分类号: H02P7/00

    摘要: Methods, system and apparatus are provided for reducing power loss in an electric motor drive system that includes an electric machine and an inverter module. A controller determines whether a torque command (Tcmd) is less than a minimum torque threshold (Tmin) that is required to disable the inverter module, and if so, increments a counter and determines whether the torque command (Tcmd) remains less than the minimum torque threshold (Tmin). When the torque command (Tcmd) remains less than the minimum torque threshold (Tmin), the controller checks to determine whether a current count value (n) maintained at the counter is greater than a count threshold (nth), and if so, the controller can generate a disable signal to disable switching within the inverter module.

    摘要翻译: 提供了用于减少包括电机和逆变器模块的电动机驱动系统中的功率损耗的方法,系统和装置。 控制器确定转矩指令(Tcmd)是否小于禁用变频器模块所需的最小转矩阈值(Tmin),如果是,则增加一个计数器,并确定转矩指令(Tcmd)是否保持小于最小值 转矩阈值(Tmin)。 当扭矩指令(Tcmd)保持小于最小扭矩阈值(Tmin)时,控制器检查以确定计数器上保持的当前计数值(n)是否大于计数阈值(nth),如果是,则 控制器可以产生一个禁用信号,以禁用逆变器模块内的开关。