Study of a modified parallel resonance AC-DC convertor with unity power factor and high efficiency

Author

Ghanem, M.C. ; Morry, S.E. ; Al-Haddad, Kamal ; Roy, G.

Author_Institution

Dept. de Genie Electr., Ecole de Technol. Superieure, Montreal, Que., Canada

Volume

2

fYear

1995

fDate

5-8 Sep 1995

Firstpage

975

Abstract

This article proposes a new topology and control strategy to optimise the power factor of a parallel resonance AC/DC convertor of high power while retaining high efficiency. The static and dynamic characteristics determined by the phase-plane method and the results obtained from simulation with Matlab software are detailed and analysed with an example of design of a convertor operating at 33 kHz and 2.5 kW. With adjustment of the commutator control signal a line current of sinusoidal form can be created in phase with the network voltage while maintaining soft switching. The amplitude and phase of the current can be adjusted separately

Keywords

AC-DC power convertors; commutators; digital simulation; power engineering computing; power factor; resonant power convertors; switching circuits; 2.5 kW; 33 kHz; Matlab software; commutator control signal; control strategy; dynamic characteristic; high efficiency; line current; modified parallel resonance AC-DC convertor; phase-plane method; power factor optimisation; sinusoidal form; soft switching; static characteristics; topology; unity power factor; Analytical models; Chromium; Diodes; Frequency conversion; Inductance; MATLAB; RLC circuits; Resonance; Thyristors; Video recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1995. Canadian Conference on

Conference_Location

Montreal, Que.

ISSN

0840-7789

Print_ISBN

0-7803-2766-7

Type

conf

DOI

10.1109/CCECE.1995.526591

Filename

526591