Single-phase step-up/down rectifier with improved supply current waveform

Author

Oishi, H. ; Okada, H. ; Ishizaka, K. ; Itoh, Ryusei

Author_Institution

Dept. of Electr. Eng., Oita Nat. Coll. of Technol., Japan

Volume

144

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

6

Lastpage

12

Abstract

The paper presents a novel single-phase rectifier with step-up/down characteristics. This is fundamentally based on the cascade combination of a diode bridge and a single-ended primary inductor power convertor. To sinusoidally waveshape the supply current with a near-unity power factor independent of the working conditions, a buffer capacitor is operated with voltage reversibility for the supply by arranging the auxiliary power switching device and diode. The circuit operation is macroscopically analysed by the state-space averaging method based on a DC equivalent circuit and such an operation is also simulated by a rigorous state-space method. Moreover, the tested setup, using two insulated-gate bipolar transistors and a 16-bit microcomputer, is implemented to experimentally investigate the steady-state and transient characteristics. The experimental and simulated results confirm the usefulness of the rectifier presented

Keywords

AC-DC power convertors; equivalent circuits; harmonic distortion; insulated gate bipolar transistors; power factor; power semiconductor diodes; power semiconductor switches; power system harmonics; rectifying circuits; 16 bit; 16-bit microcomputer; DC equivalent circuit; auxiliary power switching device; buffer capacitor; cascade combination; diode bridge; insulated-gate bipolar transistors; near-unity power factor; rigorous state-space method; single-ended primary inductor power convertor; single-phase step-up/down rectifier; state-space averaging method; steady-state characteristics; supply current waveform; transient characteristics; voltage reversibility;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19970687

Filename

583357