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    • 5. 发明申请
    • A DRIVE UNIT FOR AN ELECTRIC MOTOR
    • 电动马达驱动单元
    • WO2009043373A1
    • 2009-04-09
    • PCT/EP2007/060452
    • 2007-10-02
    • ABB TECHNOLOGY ABKARLSSON, Mats
    • KARLSSON, Mats
    • H02H9/00H02P3/14
    • H02P3/14
    • A drive unit for at least one electric motor, the drive unit comprising: a power source (1 ) producing direct current to the motor, an energy storage (C1 ) arranged at the output of the power source for storing energy recovered during braking of the motor, a discharge circuit for discharging the energy stored in said energy storage if the voltage across the energy storage becomes too high, wherein the discharge circuit includes a resistor (R) adapted to discharge the energy stored in the energy storage. The drive unit is adapted, during start-up of the drive unit, to lead an inrush current through said resistor and during normal operation to discharge the energy storage by means of said resistor when the voltage across the energy storage becomes too high.
    • 一种用于至少一个电动机的驱动单元,所述驱动单元包括:向所述电动机产生直流电的电源(1),布置在所述电源的输出处的能量存储器(C1),用于存储在所述电动机的制动过程中回收的能量 电动机,放电电路,用于如果能量存储器两端的电压变得过高,则放电存储在所述能量存储器中的能量放电,其中放电电路包括适于放出存储在能量存储器中的能量的电阻器(R)。 所述驱动单元在所述驱动单元的启动期间适于引导通过所述电阻器的涌入电流,并且在正常操作期间,当所述能量存储器两端的电压变得过高时,借助于所述电阻器对所述能量存储器进行放电。