Power factor correction control circuit

Details Power factor correction control circuit Power factor correction control circuit

2008-09-02

2008-09-02

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S020000

Reexamination Certificate

active

11897208

ABSTRACT:
A bi-directional boost circuit for power factor correction includes a power factor control circuit and a pair of diodes, a pair of inductors, and a pair of switches. A first diode, a second diode, a first inductor, a second inductor, a first switch, and a second switch convert the AC input voltage, rectify the AC input voltage, and output an intermediate DC voltage. The power factor control circuit receives the AC input voltage and receives the intermediate DC voltage. The power factor control circuit regulates the DC output voltage. Based on the AC input voltage and the intermediate DC output voltage, the power factor control circuit controls an inductor current waveform by driving the first switch and the second switch to create a substantially sinusoidal current as seen by the power source that is in phase with the AC input voltage.

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Souza et al., “High Power Factor Rectifier with Reduced Conduction and Commutation Losses,” Jun. 6, 1999, Intelec '99, 21STInternational Telecommunications Energy Conference, Copenhagen, Jun. 6-9, 1999, ISBN: 0-7803-5625-X.
European Search Report for Corresponding European Patent Application (Patent Application No. 05250639.1), dated Oct. 19, 2005.

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