Analysis and design of LCL-type series resonant converter

Author

Bhat, Ashoka K S

Author_Institution

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

Volume

41

Issue

1

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

118

Lastpage

124

Abstract

A series resonant converter modified by adding an inductor in parallel with the transformer primary (or secondary) is presented. This configuration is referred to as an “LCL-type series resonant converter”. A simplified steady-state analysis using complex AC circuit analysis is presented. Based on the analysis, a simple design procedure is given. Detailed experimental results obtained from a MOSFET-based 640 W converter are presented to verify the analysis. A narrow variation in switching frequency is required to regulate the output voltage for a very wide change in load, and the converter has load short-circuit capability. It is shown that by placing the parallel inductor on the secondary side, the parasitics of the high-frequency transformer can be used profitably

Keywords

circuit resonance; insulated gate field effect transistors; power convertors; 640 W; LCL-type series resonant converter; MOSFET-based converter; complex AC circuit analysis; high-frequency transformer; inductor; load short-circuit capability; output voltage regulation; parasitics; steady-state analysis; switching frequency; Circuit analysis; Frequency control; Hafnium; Inductance; Inductors; Magnetic analysis; Magnetic resonance; Reactive power; Switching converters; Switching frequency;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.281617

Filename

281617