Approximate analysis of the resonant LCL DC-DC converter

Author

Ivensky, G. ; Bronstein, Svetlana ; Ben-yaakov, Sam

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

fYear

2004

fDate

6-7 Sept. 2004

Firstpage

44

Lastpage

47

Abstract

An approximate analysis of LCL converters operating above and below resonance is presented. The study, based on replacing the rectifier and load by an equivalent parallel resistance, applies the fundamental harmonics method and the assumption that the current through the diodes of the output rectifier has a sinusoidal waveform. Equations obtained for the conduction angle of these diodes (less than π in discontinuous and equal to π in continuous conduction modes) are used for developing the output-to-input voltage ratio as a function of three independent parameters. The theoretical and experimental results are in good agreement.

Keywords

DC-DC power convertors; harmonics; nonlinear network analysis; resonant power convertors; LCL converters; approximate circuit analysis; conduction angle; continuous conduction mode; discontinuous conduction mode; equivalent parallel resistance; fundamental harmonics method; load; output-to-input voltage ratio; rectifier; resonant LCL DC-DC converter; resonant converter; Bridge circuits; DC-DC power converters; Diodes; Filters; Inductors; Power electronics; Rectifiers; Resonance; Resonant inverters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Electronics Engineers in Israel, 2004. Proceedings. 2004 23rd IEEE Convention of

Print_ISBN

0-7803-8427-X

Type

conf

DOI

10.1109/EEEI.2004.1361084

Filename

1361084