New switching sequence for three phase converter with ZVS using a transformer

Author

Ofuji, Shinya ; Oshikata, Tetsuya ; Matsuda, Yoshiaki

Author_Institution

Dev. Div., Shindengen Electr. Manuf. Co. Ltd., Saitama, Japan

Volume

2

fYear

1997

fDate

3-6 Aug 1997

Firstpage

797

Abstract

A new switching sequence for a high power factor three phase converter is presented. By using the switching sequence, we can get a lower cost converter by letting the currents of upper-side-switches and lower-side-switches be unbalanced intentionally. Additionally, the three phase converter employs new ZVS topology with a transformer. The transformer makes the circuit design easier and the auxiliary switch for ZVS can switch under ZCS condition. With these technologies, we developed a high power factor, high efficiency, low noise, low cost three phase converter

Keywords

power convertors; power factor correction; switching circuits; transformers; ZCS; ZVS; auxiliary switch; high efficiency; high power factor; low cost; low noise; lower-side-switches; switching sequence; three phase converter; transformer; unbalanced switch currents; upper-side-switches; zero current switching; zero voltage switching; Circuit noise; Circuit synthesis; Circuit topology; Costs; Reactive power; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Conference_Location

Nagaoka

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.638326

Filename

638326