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    • 16. 发明授权
    • System and method for fast start-up of an induction motor
    • 感应电动机快速启动的系统和方法
    • US08421397B2
    • 2013-04-16
    • US13083849
    • 2011-04-11
    • Anbo YuLei ZhangKevin Lee
    • Anbo YuLei ZhangKevin Lee
    • H02P1/26
    • H02P1/28H02P29/032
    • A system for controlling operation of a motor drive during fast start-up of an induction motor is disclosed. The system includes an AC motor drive having a PWM inverter and a control system to generate a command signal to cause the PWM inverter to control an output of the AC motor drive. The control system includes a start-up modulator that is selectively operable during start-up acceleration of the AC motor, the start-up modulator programmed to determine a motor current applied to the AC motor and a voltage of a DC bus, generate a first frequency offset that causes a frequency reference of the command signal to be decreased when the motor current is greater than a reference current threshold, and generate a second frequency offset that causes the frequency reference of the command signal to be increased when the DC bus voltage is greater than a reference voltage threshold.
    • 公开了一种用于在感应电动机的快速启动期间控制电动机驱动器的操作的系统。 该系统包括具有PWM逆变器的AC电动机驱动器和用于产生指令信号以使PWM逆变器控制AC电动机驱动器的输出的控制系统。 控制系统包括启动调制器,其可在AC电动机的启动加速期间选择性地工作,所述启动调制器被编程以确定施加到AC电动机的电动机电流和DC总线的电压,产生第一 当电动机电流大于参考电流阈值时,导致指令信号的频率参考值减小的频率偏移,并且产生第二频率偏移,当DC总线电压为DC时,使得命令信号的频率参考值增加 大于参考电压阈值。