Constant switching frequency LLC-type series resonant converter

Author

Siri, Kasemsan ; Lee, C.Q.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., IL, USA

fYear

1989

fDate

14-16 Aug 1989

Firstpage

513

Abstract

An analysis of the LLC-type series resonant converter (SRC) operating in the continuous and discontinuous conduction modes is presented. By using both the time domain and state-plane analyses, the steady state expressions can be derived to facilitate the numerical calculation of the control characteristics. To obtain the maximum range of the output voltage gain, the switching frequency is chosen to be the resonant frequency of the converter operating in the continuous conduction mode. Performance characteristics of the converter operating in this condition are given, and compared with those of the conventional SRC using pulse width modulation (PWM) control

Keywords

network analysis; power convertors; switching circuits; time-domain analysis; LLC-type; constant-switching frequency; continuous conduction mode; control characteristics; discontinuous conduction modes; output voltage gain; performance characteristics; resonant frequency; series resonant converter; state-plane analyses; steady state expressions; Equivalent circuits; Pulse width modulation; Pulse width modulation converters; Resonance; Steady-state; Switches; Switching circuits; Switching converters; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on

Conference_Location

Champaign, IL

Type

conf

DOI

10.1109/MWSCAS.1989.101904

Filename

101904