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    • 1. 发明申请
    • POWER CONTROL SYSTEM FOR AN A.C. INDUCTION MOTOR
    • 电感式电动机功率控制系统
    • WO1994014236A1
    • 1994-06-23
    • PCT/US1993012147
    • 1993-12-14
    • ENERGY CONSORTIUM, INC.
    • ENERGY CONSORTIUM, INC.ANDERSON, Nicholas
    • H02P07/622
    • H02J3/1892H02P23/26
    • A power factor control system (100) for an A.C. induction motor (106) determines the difference in phase between the voltage applied to the motor (106) and the current drawn by the motor (106). Based upon this difference in phase, an integrator (178) generates an error signal. The error signal is compared with a ramp wave to derive a pulse signal which controls the voltage applied to the motor (106), which in turn controls the amount of current supplied to the motor (106), in order to reduce the power consumed by the motor (106). The integrator (178) includes a dual-path feedback filter (192) having a polarized capacitor in each path. A power supply (110) is used to quickly provide the full operating bias voltages required by several of the components contained in the control system (100).
    • 用于交流感应电动机(106)的功率因数控制系统(100)确定施加到电动机(106)的电压与由电动机(106)吸取的电流之间的相位差。 基于该相位差,积分器(178)产生误差信号。 将误差信号与斜波进行比较以得出控制施加到电动机(106)的电压的脉冲信号,该脉冲信号又控制供给电动机(106)的电流量,以便减少由电动机(106)消耗的电力 电动机(106)。 积分器(178)包括在每个路径中具有极化电容器的双路径反馈滤波器(192)。 电源(110)用于快速提供包含在控制系统(100)中的几个组件所需的全部工作偏置电压。