Power factor pre-regulator (PFP) with an improved zero-current-switching (ZCS) PWM switch cell

Author

Choi, Hang-Seok ; Cho, B.H.

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

1

fYear

2002

fDate

2002

Firstpage

19

Abstract

This paper proposes a new boost power factor preregulator (PFP) featuring zero-current-switching (ZCS). By employing an improved ZCS PWM switch cell, ZCS of all the active switches is achieved without additional current stress of the main switch. The additional conduction loss is reduced, since the circulating current for the soft switching flows only through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path. The diodes commutate softly and reverse recovery problems are alleviated. The voltage stress of the rectifier diode is reduced compared to the previous ZCS approaches. Design guidelines are described and verified by experimental results from the 1.2 kW prototype boost PFP

Keywords

AC-DC power convertors; DC-DC power convertors; PWM power convertors; power factor correction; rectifying circuits; switching circuits; 1.2 kW; PWM switch cell; ZCS; active switches; auxiliary circuit; circulating current; conduction loss; current stress; power factor pre-regulator; voltage stress; zero-current-switching; Diodes; Guidelines; Pulse width modulation; Reactive power; Rectifiers; Stress; Switches; Switching circuits; Voltage; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the

Conference_Location

Osaka

Print_ISBN

0-7803-7156-9

Type

conf

DOI

10.1109/PCC.2002.998506

Filename

998506