A novel square-wave converter with bidirectional power flow

Author

Chan, H.L. ; Cheng, K.W.E. ; Sutanto, D.

Author_Institution

Hong Kong Polytech., Hung Hom, Hong Kong

Volume

2

fYear

1999

fDate

1999

Firstpage

966

Abstract

A novel ZVS phase-shift controlled bidirectional DC-DC convertor is proposed. It possesses the conventional features of phase-shifted convertors, including constant switching frequency, zero-voltage switching (ZVS) and voltage control by phase-shift. However, the new convertor has been improved by developing a bi-directional power flow capability and applying synchronous rectification, hence the on-state voltage drop of the active devices are small. Therefore it is recommended for use in an electric vehicle (EV). In this paper, the principle of circuit operation of the proposed convertor was described in detail with mathematical calculations, and the experimental results were also given to verify the concept

Keywords

electric vehicles; load flow; phase shifters; power convertors; rectification; switching circuits; voltage control; ZVS; ZVS phase-shift controlled bidirectional DC-DC convertor; active devices; bidirectional power flow; circuit operation; constant switching frequency; electric vehicle; on-state voltage drop; phase-shift; phase-shifted convertors; square-wave converter; synchronous rectification; voltage control; zero-voltage switching; Bidirectional power flow; Bridge circuits; Capacitors; Inductance; Inverters; Power transformers; Switches; Switching converters; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on

Print_ISBN

0-7803-5769-8

Type

conf

DOI

10.1109/PEDS.1999.792839

Filename

792839