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    • 1. 发明授权
    • Circuit arrangement for operating an electrical machine
    • 用于操作电机的电路装置
    • US07027315B2
    • 2006-04-11
    • US10466025
    • 2002-06-28
    • Juergen HalfmannIngo Immendoerfer
    • Juergen HalfmannIngo Immendoerfer
    • H02M3/18H02M7/5387
    • H02P6/085H02P6/28
    • A circuit arrangement for operating an electrical machine having an inductive component. The circuit arrangement includes an electrical switch (TR1 through TR6) that applies a pulse-shaped signal (S1 through S4) to the electrical machine. The free-running circuit also includes an electrical switch (TR1 through TR6). A comparator (15) is provided which compares the free-running current flowing in the free-running circuit with a predefined threshold value and, if the current drops below the threshold value, provides a switching signal (S3A) that is used to deactivate the switch (TR1 through TR6) in the free-running circuit. The circuit arrangement reduces both the electrical power loss in the circuit arrangement and the mechanical power loss in the electrical machine.
    • 一种用于操作具有感应部件的电机的电路装置。 电路装置包括向电机施加脉冲状信号(S1至S4)的电开关(TR 1至TR 6)。 自由运行电路还包括电开关(TR 1至TR 6)。 提供比较器(15),其将自由运行电路中流动的自由运行电流与预定义的阈值进行比较,并且如果电流下降到阈值以下,则提供切换信号(S 3A),其用于 在自由运行的电路中禁用开关(TR 1至TR 6)。 电路装置减小电路装置中的电功率损耗和电机中的机械功率损耗。