摘要
为了设计正-反激组合变换器的变压器的优化方法,分析单管单变压器结构正-反激组合变换器组成原理和工作特性,以及变压器匝比对变换器工作模式和传输功率的影响,指出变换器正激期间传输的功率随着变压器匝比的增加而减小,反激期间传输的功率随着变压器匝比的增加而增加。经过分析变压器对变换器输出纹波电压的影响,发现其输出纹波电压的大小随负载电阻和输入电压的增大而减小,同时还随变压器匝比的增加而增大。最后综合分析变压器的匝比和电感量对变换器整机性能的影响,给出基于输出纹波电压的变压器匝比和电感量的优化设计方法,并通过实验验证理论分析和优化设计方法的正确性。
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 singletransformer 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.
作者
彭银乔
刘树林
吴浩
陆斌
吴星
Peng Yinqiao;Liu Shulin;Wu Hao;Lu Bin;Wu Xing(College of Electrical and Control Engineering Xi’an University of Science&Technology,Xi’an 710054 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第S02期470-476,共7页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51777167,51604217)。
