A multiple PWM GTO line-side converter for unity power factor and reduced harmonics

Author

Sukegawa, T. ; Kamiyama, K. ; Takahashi, Junji ; Ikimi, T. ; Matsutake, M.

Author_Institution

Hitachi Ltd., Ibaraki-ken, Japan

fYear

1991

fDate

Sept. 28 1991-Oct. 4 1991

Firstpage

279

Abstract

A multiple PWM GTO line-side converter with low switched frequency has been developed for industrial uses needing both higher capacity and performance. The multiple converter is composed of two GTO converter units parallel connected through an interphase reactor. The switching frequency of the GTO thyristors in the multiple converter can be reduced to a quarter of that in the single converter. It is verified by simulations and experiments with a 2750 kVA GTO converter and inverter system with 500 Hz switching frequency that the system has: (1) a unity power factor, (2) reduced harmonics, (3) bidirectional power flow, and (4) speed regulatory performance equal to that of an advanced cycloconverter drive system.<>

Keywords

power convertors; power factor; pulse width modulation; thyristor applications; 2750 kVA; 500 Hz; bidirectional power flow; interphase reactor; multiple PWM GTO line-side converter; speed regulatory performance; switched frequency; unity power factor; Frequency conversion; Inductors; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Switching converters; Switching frequency; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE

Conference_Location

Dearborn, MI, USA

Print_ISBN

0-7803-0453-5

Type

conf

DOI

10.1109/IAS.1991.178167

Filename

178167