Title :
A refined PWM scheme for voltage and current source converters
Author :
Ziogas, P.D. ; Moran, L. ; Joos, G. ; Vincenti, D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A pulse-width-modulation (PWM) scheme that uses the converter switching frequency to minimize unwanted load current harmonics is described. This results in the reduction of the number of switch communications per cycle. The method is suitable for high-performance variable-speed AC-motor drives that require high-output switching frequencies for near-silent operation. It is also applicable, without change, to voltage or current-source inverters and to two and four-quadrant three-phase PWM rectifiers. Key predicted results have been verified experimentally on a 5 kVA inverter breadboard.<>
Keywords :
AC motors; power convertors; pulse width modulation; rectifiers; variable speed drives; 5 kVA; PWM scheme; converter switching frequency; current source converters; four-quadrant; inverter breadboard; load current harmonics minimisation; near-silent operation; pulse-width-modulation; switch communications; three-phase PWM rectifiers; two-quadrant; variable-speed AC-motor drives; voltage source inverters; AC motors; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation; Switches; Switching converters; Switching frequency; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152303
