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

Volume

7

Issue

2

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

385

Lastpage

392

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;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.136256

Filename

136256