Title :
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
fDate :
Sept. 28 1991-Oct. 4 1991
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;
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
DOI :
10.1109/IAS.1991.178167
