Interleaved boost power factor corrector operating in discontinuous-inductor-current mode

Author

Chan, C.H. ; Pong, M.H.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong

Volume

1

fYear

1997

fDate

3-6 Aug 1997

Firstpage

405

Abstract

This paper presents the basic operation of the discontinuous-inductor-current-mode (DICM) boost PFC and the improvement achieved by interleaving technique. The PFC is constructed by at least two boost cells, each cell is kept running in DICM. Input current of the PFC is analyzed by a numerical method and the optimum power factor is calculated in different modes of operation. The calculated result is verified by experiment and presented in graphical form with detailed discussion. The result shows that interleaving technique can alleviate the ripple current and improve the power factor. The improvement is obvious for the number of boost cells equal to 2 or 3 and the ripple alleviation is better when the PFC is operated in fixed frequency mode. The optimum power factor is improved up to 0.99 even without an input filter

Keywords

DC-DC power convertors; inductors; power factor correction; discontinuous-inductor-current mode; fixed frequency operation; graphical form; input current; interleaved boost power factor corrector; interleaving technique; optimum power factor; power factor improvement; ripple current alleviation; variable frequency operation; Electronic equipment; Equations; Inductors; Interleaved codes; Power engineering and energy; Power harmonic filters; Power system harmonics; Reactive power; Switching frequency; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Conference_Location

Nagaoka

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.645646

Filename

645646