Title :
Novel 18-step diode rectifier circuit with nonisolated phase shifting transformers
Author :
Oguchi, K. ; Yamada, T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Ibaraki Univ., Hitachi, Japan
fDate :
1/1/1997 12:00:00 AM
Abstract :
A novel, economical three-phase AC/DC interface having no controllable switching devices is proposed. The key concept is the combined use of nonisolated phase-shifting transformers and DC-side interphase reactors having tapping diodes. The resultant AC input currents take the form of 18-step waveforms having a total harmonic distortion (THD) of 10.1%, which is roughly two thirds that of 12-step waveforms
Keywords :
AC-DC power convertors; harmonic distortion; phase shifters; power semiconductor diodes; power semiconductor switches; power system harmonics; power transformers; rectifying circuits; switching circuits; 18-step diode rectifier circuit; 18-step waveforms; AC input currents; DC-side interphase reactors; THD; nonisolated phase shifting transformers; nonisolated phase-shifting transformers; tapping diodes; three-phase AC/DC interface; total harmonic distortion;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:19970700
