Title :
A rugged soft commutated PWM inverter for AC drives
Author :
Cheriti, A. ; Al-Haddad, K. ; Dessaint, L.-A. ; Meynard, T.A. ; Mukhedkar, D.
Author_Institution :
Ecole Polytech., Montreal Univ., Que., Canada
Abstract :
A novel DC/AC power converter for variable-speed AC motor drives using the zero voltage switching technique is described. This converter combines the advantages of soft commutated inverter and those of conventional PWM (pulse width modulation) control inverters. In the proposed scheme the soft commutation reduces the constraints on the switches and the PWM enables simple and efficient regulation of the power flow. Furthermore the zero voltage switching technique makes operation very safe, and switching bipolar transistors at 20 kHz is easily achieved without compromising the efficiency of the system.<>
Keywords :
AC motors; bipolar transistors; commutation; invertors; power convertors; pulse width modulation; switching; variable speed drives; 20 kHz; DC/AC power converter; bipolar transistors; power flow; pulse width modulation; rugged soft commutated PWM inverter; variable-speed AC motor drives; zero voltage switching; AC motors; Analog-digital conversion; Commutation; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switches; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1990. PESC '90 Record., 21st Annual IEEE
Conference_Location :
San Antonio, TX, USA
DOI :
10.1109/PESC.1990.131251
