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    • 4. 发明授权
    • Inverter control apparatus
    • 变频器控制装置
    • US5614803A
    • 1997-03-25
    • US493702
    • 1995-06-22
    • Tatsuru MoriokaTsuneyuki Egami
    • Tatsuru MoriokaTsuneyuki Egami
    • H02P27/06H02P23/00H02P23/06H02P23/08H02P27/08H02D5/28
    • H02P23/08H02M7/53875H02P23/06H02P23/28
    • In order to reduce distortion of a real-current wave form and to suppress substantial transient fluctuation of the current and torque during changeover from a regeneration running condition to the power running condition of a three-phase induction motor, changeover from the three-phase-modulation control to the two-phase-modulation control is carried at the same time the power running condition of the motor is changed to the regeneration running condition according to the motor-state-quantum such as a detected slip ratio, detected torque, detected current or the like. Thus, distortion of the motor-current wave form is reduced and significant fluctuation of the motor-current and torque during the changeover is reduced.
    • 为了减少实时波形的变形,并且能够抑制从再生运行状态切换到三相感应电动机的动力运行状态时的电流和转矩的实质性暂时波动,从三相异步电动机 在将电动机的动力运行状态根据检测到的滑移率,检测转矩,检测电流等的电动机状态量变更为再生运行状态的同时进行对二相调制控制的调制控制 或类似物。 因此,电动机电流波形的变形减小,并且在切换期间电动机电流和转矩的显着变动减小。