Nonlinear resonant pole zero voltage switching in a self oscillating DC to DC converter with magnetic feedback

Author

Ferreira, J.A. ; van Wyk, J.D. ; de Beer, A.S.

Author_Institution

Energy Lab., Rank Afrikaans Univ., Johannesburg, South Africa

fYear

1991

fDate

24-27 Jun 1991

Firstpage

171

Lastpage

176

Abstract

The self-oscillating inverter with magnetic feedback has proven itself over the years as a simple and robust converter. The fixed-ratio DC-to-DC converter based on this inverter is described, and it is shown that zero voltage switching can be achieved with minimal modifications to the circuit. The topology distinguishes itself from other zero-voltage-switching, clamped voltage topologies by the fact that the inductor in the parallel resonant tank not only is nonlinear, but may include a series resistor. Dimensioning of the soft switching network is restricted by conditions imposed by the feedback circuit and base drive requirements. A method for analysis and experimental results is presented

Keywords

poles and zeros; power convertors; switching; base drive; feedback circuit; fixed-ratio DC-to-DC converter; nonlinear resonant pole zero voltage switching; self oscillating convertor; Circuit topology; DC-DC power converters; Feedback; Inductors; Inverters; Magnetic resonance; Network topology; Robustness; Switching converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-0090-4

Type

conf

DOI

10.1109/PESC.1991.162671

Filename

162671