公开(公告)号：US20010035744A1

公开(公告)日：2001-11-01

申请号：US09855464

申请日：2001-05-15

Applicant: Asian Power Devices Inc.

Inventor： Chun-Hsiung Chen

IPC: G05F001/40

CPC classification number: H02M1/4225 ,  G05F1/70 ,  Y02B70/126

Abstract: An improved control device for power factor corrections contains a voltage-raising circuit, a pulse width modulator to control the conduction of the voltage-raising circuit and an AC reference voltage circuit to control the output of the voltage-raising circuit. The AC reference voltage circuit consists of an error amplifier and a comparator connecting to an output port of the error amplifier. The voltage-raising circuit outputs a voltage to the error amplifier. The output port of the comparator connects to the output port of a full-wave rectifier through a set of voltage dividers and capacitor. Therefore, the output voltage of the AC reference voltage circuit conforms to the input voltage of the voltage-raising circuit, achieving the objective of correcting the power factor.

Abstract translation: 用于功率因数校正的改进的控制装置包括升压电路，用于控制升压电路的导通的脉宽调制器和用于控制升压电路的输出的AC参考电压电路。 交流参考电压电路由误差放大器和连接到误差放大器的输出端口的比较器组成。 升压电路向误差放大器输出电压。 比较器的输出端口通过一组分压器和电容器连接到全波整流器的输出端口。 因此，交流参考电压电路的输出电压符合升压电路的输入电压，达到校正功率因数的目的。