48/72-step voltage double three-level converters coupled with line-side reactors

Author

Oguchi, Kuniomi ; Hama, Hideki ; Kubota, Tomotsugu

Author_Institution

Fac. of Eng., Ibaraki Univ., Hitachi, Japan

Volume

2

fYear

1998

fDate

31 Aug-4 Sep 1998

Firstpage

602

Abstract

A novel 48- or 72-step voltage power converter system topology without using bulky input transformers is proposed. The system consists of three line-side interphase reactors, two three-level voltage-source power converters and an additional single-phase converter with a small single-phase transformer. The two main converters operate at the power line frequency and the additional converter operates at a frequency of six times the line frequency. The resultant voltages have a smaller total harmonic distortion of 3.97% for the 48-step operation or 2.59% for the 72-step operation

Keywords

AC-DC power convertors; harmonic distortion; power conversion harmonics; power transformers; rectifying circuits; 48/72-step voltage double three-level power converters; line-side interphase reactor coupling; power line frequency; rectifier circuits; single-phase converter; single-phase transformer; total harmonic distortion; voltage distortion; Circuits; Frequency conversion; Inductors; Phase transformers; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switching converters; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE

Conference_Location

Aachen

Print_ISBN

0-7803-4503-7

Type

conf

DOI

10.1109/IECON.1998.724161

Filename

724161