Optimized Design of Transformer of Forward-Flyback Converter

被引：0
|
作者：
Peng Y. [1 ]
Liu S. [1 ]
Wu H. [1 ]
Lu B. [1 ]
Wu X. [1 ]
机构：
[1] College of Electrical and Control Engineering, Xi'an University of Science & Technology, Xi'an
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷
关键词：
Forward-flyback converter; Optimal design; Output ripple voltage; Transformer; Transmission power;
D O I：
10.19595/j.cnki.1000-6753.tces.191580
中图分类号：
学科分类号：
摘要：
In order to obtain the optimal design method of the transformer of the forward-flyback converter, the composition principle and working characteristics of the single-transform single-transformer forward-flyback converter are analyzed, and the operating mode and transmission power of the converter are compared. The influence indicates that the power transmitted during the forward period of the converter decreases as the turns ratio of the transformer increases, and the power transmitted during the flyback increases as the turns ratio of the transformer increases. After analyzing the influence of the transformer on the output ripple voltage of the converter, it is found that the output ripple voltage decreases with the increase of the load resistance and the input voltage, and also increases with the increase of the turns ratio of the transformer. Finally, the influence of turn ratio and inductance of transformer on the performance of the converter is analyzed comprehensively. The optimization design method of turn ratio and inductance of transformer based on output ripple voltage is given. The correctness of theoretical analysis and optimization design method is verified by experiment. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：470 / 476
页数：6
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