Title :
A rugged soft commutated PWM inverter for AC drives
Author :
Cheriti, Ahmed ; Al-Haddad, Kamal ; Dessaint, Louis A. ; Meynard, Thierry A. ; Mukhedkar, Dinkar
Author_Institution :
Ecole Polytech., Montreal Univ., Que., Canada
fDate :
4/1/1992 12:00:00 AM
Abstract :
A novel DC-DC power converter for variable-speed AC power drives using the zero-voltage switching technique is described. This converter combines the advantages of soft commutated inverters and those of conventional pulsewidth modulated (PWM) 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 safe, and the switching of bipolar transistors at 20 kHz is easily achieved without compromising the efficiency of the system
Keywords :
AC motors; bipolar transistors; commutation; invertors; load flow; power transistors; pulse width modulation; switching; variable speed drives; 20 kHz; DC-DC power converter; PWM; ZVS; bipolar transistors; efficiency; load flow; power flow; soft commutation; variable-speed AC power drives; zero-voltage switching; Capacitors; Diodes; Leg; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Resonance; Switches; Switching frequency; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
