Input current analysis of interleaved boost converters operating in discontinuous-inductor-curent 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

22-27 Jun 1997

Firstpage

392

Abstract

This paper presents the basic operation of the discontinuous-inductor-current-mode (DICM) boost PFC and the improvement achieved by the 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 the 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 optimum power factor is improved up to 0.99 even without using an input filter

Keywords

DC-DC power convertors; inductors; power factor correction; boost power factor correction; discontinuous-inductor-current mode; input current analysis; interleaved boost converters; interleaving technique; optimum power factor; ripple current; Electronic equipment; Equations; Europe; Frequency conversion; Inductors; Interleaved codes; Power harmonic filters; Power system harmonics; Reactive power; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE

Conference_Location

St. Louis, MO

ISSN

0275-9306

Print_ISBN

0-7803-3840-5

Type

conf

DOI

10.1109/PESC.1997.616754

Filename

616754