Analysis and design of asymmetrical half bridge flyback converter

被引：67

作者：

Chen, TM ^{[1
]}

Chen, CL ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

来源：

IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS | 2002年 / 149卷 / 06期

关键词：

Capacitor storage - Computer simulation - Electric inductors - Electric switches - Electric waveforms - Equivalent circuits - Inductance - Mathematical models - Numerical methods;

D O I：

10.1049/ip-epa:20020525

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：

The detailed circuit behaviour of the asymmetrical half bridge flyback converter is analysed. The specific relationships between the duty cycle and the different types of energy in the energy storage elements are thoroughly investigated. From the analytical results, the maximum duty cycle is not bounded by 50%, which means that the converter can now be optimally used for the different applications. The zero voltage switching (ZVS) conditions of the power switches are derived. Mathematical equations and design considerations are also given. According to the presented design guidelines, the ZVS operations of the power switches can be maintained from no-load to full-load conditions. A 5V/20A prototype has been built to verify the analytical results under real life conditions.

引用

页码：433 / 440

页数：8

共 8 条

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[2] LIM SH, 1999, Patent No. 5959850
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[4] SPIAZZI G, 1996, P IEEE IAS ANN M, P1169
[5] Tabisz W. A., 1988, PESC '88 Record. 19th Annual IEEE Power Electronics Specialists Conference (Cat. No.88CH2523-9), P9, DOI 10.1109/PESC.1988.18109
[6] TABISZ WA, 1989, PESC 89 RECORD, VOLS 1 AND 2, P243, DOI 10.1109/PESC.1989.48496
[7] Watson ML, 1996, NEPHROL DIAL TRANSPL, V11, P1
[8] YOSHIDA K, 1992, P IEEE INTELEC, P324

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