Three-phase 36-step voltage converter system with an additional single-phase converter for voltage shaping

Author

Oguchi, Kuniomi

Author_Institution

Dept. of Electr. & Electron. Eng., Ibaraki Univ., Hitachi, Japan

fYear

1996

fDate

15-20 Sep 1996

Firstpage

326

Lastpage

331

Abstract

A novel double AC/DC converter system with 36-step input voltages is proposed. This system consists of two three-phase neutral-point-clamped (NPC) converters and an additional single-phase NPC converter. The main converters operate at a switching frequency of a power line frequency and the additional converter operates at a switching frequency of nine times that of the power line frequency. The proposed system is suitable for high-power applications because of a relatively low switching frequency and less distorted input voltages

Keywords

AC-DC power convertors; harmonic distortion; power system harmonics; switching circuits; FACTS; double AC/DC converter system; less distorted input voltages; neutral-point-clamped converters; power line frequency; single-phase converter; switching frequency; three-phase 36-step voltage converter; voltage shaping; Analog-digital conversion; Circuits; Frequency conversion; Phase transformers; Pulse width modulation; Pulse width modulation converters; Switching converters; Switching frequency; Thyristors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference, 1996. Proceedings., 1996 IEEE

Conference_Location

Los Angeles, CA

Print_ISBN

0-7803-3522-8

Type

conf

DOI

10.1109/TDC.1996.545955

Filename

545955