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    • 3. 发明授权
    • Constant-frequency active filter controlled by a peak current control mode
    • 由峰值电流控制模式控制的恒频有源滤波器
    • US06388900B1
    • 2002-05-14
    • US09754333
    • 2001-01-05
    • Hau-Jean Hsu
    • Hau-Jean Hsu
    • H02M3335
    • H02M1/4208H02M1/12H02M2001/0012Y02B70/126Y02P80/112
    • A constant-frequency active filter controlled by a peak current control mode, the constant-frequency active filter composes of a voltage step-up unit and a power factor corrector, wherein the power factor corrector is composed of a voltage control loop and a current control loop. The voltage step-up unit adjusts a waveform of an input current to a sine waveform. The voltage control loop has a microprocessor that provides a current command having the same phase with an input voltage to a PWM controller of the current control loop. The current control loop provides a sensing current induced from the input current to the PWM controller. The PWM controller receives the sensing current and the current command to control the input voltage and the input current to become the same phase so as to obtain a high power factor.
    • 由峰值电流控制模式控制的恒频有源滤波器,恒压有源滤波器由升压单元和功率因数校正器构成,功率因数校正器由电压控制回路和电流控制 循环。 升压单元将输入电流的波形调整为正弦波形。 电压控制回路具有微处理器,其向电流控制回路的PWM控制器提供与输入电压具有相同相位的电流指令。 电流控制环路提供从PWM输入电流感应到PWM控制器的感应电流。 PWM控制器接收感应电流和电流指令,以控制输入电压和输入电流变为相同相位,以获得高功率因数。