Title :
Three-phase pulse-amplitude and width-modulated inverter system
Author :
Sriraghavan, S.M. ; Pradhan, B.D. ; Revankar, G.N.
Author_Institution :
Tata Electric Company, Research and Development Department, Bombay, India
fDate :
5/1/1981 12:00:00 AM
Abstract :
The proposed 3-phase stepped wave inverter is based on a new method of controlling the double bridge inverter. The control of individual bridges is programmed to yield a stepped voltage waveform with six steps per quarter cycle and a total harmonic distortion of 7.75%. When voltage control is introduced, the proposed pulse-amplitude and width-modulated inverter has predominant harmonics of the 23rd and 25th. The scheme utilises a small number of thyristor power switches operated at low commutation frequency. The results have been experimentally verified.
Keywords :
bridge circuits; commutation; electric distortion; harmonics; invertors; pulse amplitude modulation; pulse width modulation; voltage control; PAM; PWM; double bridge inverter; harmonic distortion; pulse amplitude modulated circuits; pulse with modulated circuits; stepped voltage waveform; three phase inverters; thyristor power switches operated at low commutation frequency; voltage control;
Journal_Title :
Electric Power Applications, IEE Proceedings B
DOI :
10.1049/ip-b.1981.0023
