Analysis, Design and Implementation of an Improved ZVZCS-PWM Forward converter

- Journal title : Journal of Electrical Engineering and Technology
- Volume 9, Issue 1, 2014, pp.197-204
- Publisher : The Korean Institute of Electrical Engineers
- DOI : 10.5370/JEET.2014.9.1.197

Title & Authors

Analysis, Design and Implementation of an Improved ZVZCS-PWM Forward converter

Soltanzadeh, Karim; Dehghani, Majid; Khalilian, Hosein;

Soltanzadeh, Karim; Dehghani, Majid; Khalilian, Hosein;

Abstract

In this paper an Improved Zero Voltage Zero Current Pulse Width Modulation Forward converter which employs a simple resonance snubber circuit is introduced. A simple snubber circuit consists of a capacitor, an inductor and two diodes. In proposed converter, switch Q1 operates at ZCS turn-on, and ZVS turn-off conditions and all-passive semiconductor devices operate at ZVZCS turn-on and turn-off state. The proposed converter is analyzed and various operating modes of the ZVZCS-PWM forward converter are discussed. Analysis and design considerations are presented and the prototype experimental results of a 100w (40 V/2.5A) proposed converter operating at 30 KHz switching frequency confirm the validity of theoretical analysis.

Keywords

Forward converter;Pulse width modulation;Zero voltage switching;Zero current switching;TL494;

Language

English

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