Analysis and design of two-switch flyback converter with double passive lossless snubber

被引：9

作者：

Soltanzadeh, Karim ^{[1
]}

Yousefi, Mohammad Reza ^{[2
]}

机构：

[1] Islamic Azad Univ, Young Researchers & Elite Club, Najafabad Branch, Najafabad, Iran

[2] Islamic Azad Univ, Smart Microgrid Res Ctr, Najafabad Branch, Najafabad, Iran

来源：

IET POWER ELECTRONICS | 2018年 / 11卷 / 07期

关键词：

snubbers; PWM power convertors; switches; switching convertors; capacitors; inductors; rectifiers; diodes; zero current switching; zero voltage switching; double passive lossless snubber; DPLS; pulse width modulation two-switch flyback converter; TSFC; capacitor; inductor; zero voltage turn off; zero current turn on; ZC turn on; power switch; ZC turn off; rectifier diode; reverse recovery problem; continuous conduction mode; soft switching condition; power; 240; W; voltage 85 V to 135 V; voltage; 24; V; frequency; 300; kHz; DC-DC CONVERTER; TRANSITION PWM CONVERTERS; SYNCHRONOUS RECTIFIER; CLAMP; IMPLEMENTATION; FREQUENCY; FAMILY; SWITCH; MODE; CELL;

D O I：

10.1049/iet-pel.2017.0442

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A double passive lossless snubber (DPLS) is applied to a pulse width modulation two-switch flyback converter (TSFC). The DPLS, which has two capacitors, two inductors, and four diodes, has achieved zero voltage turn off and zero current (ZC) turn on for power switches without high voltage and current stresses; ZC turn on and ZC turn off for a rectifier diode without a reverse recovery problem. In this study, the steady-state operating modes of TSFC-DPLS are analysed and the proposed converter design procedure to operate in the continuous conduction mode is taken. To validate the theoretical analysis, a 240W prototype TSFC-DPLS under an 85-135V(rms) input, 24V(DC) output, and 300kHz is implemented. Finally, by utilising the experimental results, the soft switching conditions under wide input voltage and output load ranges are discussed.

引用

页码：1187 / 1194

页数：8

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