A fixed-frequency modified series-resonant converter: analysis, design, and experimental results

Author

Bhat, A.K.S.

Author_Institution

Dept. of Electr. Eng., Victoria Univ., BC, Canada

Volume

10

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

766

Lastpage

775

Abstract

It is shown that a fixed-frequency modified (LCL-type) series-resonant converter operates in five different modes with variations in the load current and the supply voltage. The converter is analyzed using the state-space approach for these operating modes. Both the general solutions and the steady-state solutions are obtained. Based on the analysis, design curves are obtained and a simple design procedure is illustrated using a design example. Detailed experimental results obtained from a MOSFET-based 500 W converter are presented to verify the analysis. It is shown that using a proper design, the converter operates only in modes 2 and 3, ensuring a lagging power factor mode of operation for very wide variations in the load and supply voltage

Keywords

field effect transistor switches; power factor; resonant power convertors; state-space methods; switching circuits; 500 W; LCL-type series-resonant converter; MOSFET-based converter; fixed-frequency modified series-resonant converter; lagging power factor; load current variations; operating modes; state-space approach; steady-state solutions; supply voltage variations; Current supplies; Frequency conversion; RLC circuits; Reactive power; Resonance; Resonant frequency; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.471297

Filename

471297