Analysis of a quasi-resonant circuit for soft-switched inverters

Author

Zhang, J. ; Hui, S.Y.R.

Author_Institution

Sch. of Electr. Eng., Univ. of Technol., Sydney, NSW, Australia

fYear

1994

fDate

20-25 Jun 1994

Firstpage

1399

Abstract

This paper presents an analysis of a quasi-resonant circuit for soft-switched inverters. The quasi-resonant circuit provides zero-voltage instants for zero-voltage inverter switching by pulling down the DC link voltage momentarily to zero without increasing the peak value of the nominal DC link voltage. Switches in the quasi-resonant circuit can also be turned off at zero current/voltage condition. The operating principle of this circuit is explained, and the analysis of each operating mode presented. Design criteria for achieving zero voltage switching are derived from the general mathematical analysis. Operation of the circuit has been verified by a PSPICE simulation

Keywords

PWM invertors; SPICE; circuit analysis computing; digital simulation; network synthesis; power engineering computing; resonant power convertors; software packages; switching circuits; DC link voltage; PSpice; computer simulation; design criteria; mathematical analysis; operating mode; operating principle; quasi-resonant circuit; soft-switched inverters; zero current switching; zero voltage switching; Capacitors; Clamps; Pulse width modulation; Pulse width modulation inverters; RLC circuits; Resonance; Resonant inverters; SPICE; Switching circuits; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE

Conference_Location

Taipei

Print_ISBN

0-7803-1859-5

Type

conf

DOI

10.1109/PESC.1994.373867

Filename

373867