Control-loop modeling of the controllable ZVS PWM forward converters using saturable magnetic cores

Author

Chen, Yie-Tone ; Liu, Wen-Ho

Author_Institution

Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan

Volume

15

Issue

1

fYear

2000

fDate

1/1/2000 12:00:00 AM

Firstpage

140

Lastpage

155

Abstract

Employing a saturable core in the development of zero-voltage-switching (ZVS) technique has attracted widespread attention. However, these analyses are focused on the discussions of the uncontrollable ZVS pulsewidth modulation (PWM) converters. In this paper, the characteristics after the addition of the control circuits to the ZVS saturable-core PWM converters are considered. The small-signal models of the controllable ZVS saturable-core PWM converters are also proposed. Furthermore, a proper compensation strategy is offered to achieve a stable and satisfactory dynamic response. Self-excited ZVS PWM resonant regulators with the control scheme are eventually implemented to verify theoretical derivations

Keywords

PWM power convertors; compensation; magnetic cores; switching circuits; voltage control; compensation strategy; control-loop modeling; controllable ZVS PWM forward converters; dynamic response; saturable magnetic cores; small-signal models; zero-voltage-switching; Circuit topology; Inductance; Magnetic analysis; Magnetic cores; Power electronics; Pulse width modulation; Pulse width modulation converters; Resonance; Stress; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.817372

Filename

817372