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CLL谐振变换器谐振电路参数优化设计
吴建雪, 许建平, 陈章勇
西南交通大学 电气工程学院 磁浮技术与磁浮列车教育部重点实验室,四川 成都 610031
摘要:
CLL谐振变换器谐振网络电路参数的设计关系到变换器性能的好坏。基于基波近似法,并结合特征阻抗分析方法,提出一种CLL谐振变换器谐振网络电路参数优化设计方案。详细分析了CLL谐振变换器的直流增益特性、谐振网络电流有效值和谐振电容电压应力,同时采用特征阻抗分析方法给出了实现开关管软开关的限制条件。实验结果验证了所提方案的正确性。
关键词:  CLL谐振变换器  谐振电感比  品质因数  环流损耗  工作特性  变换器  谐振电路  设计
DOI:
分类号:
基金项目:基金项目:国家自然科学基金资助项目(51177140);中央高校基本科研业务费专项资金资助项目(2682013ZT20)
Optimal design of resonant circuit parameters for CLL resonant converter
WU Jianxue, XU Jianping, CHEN Zhangyong
Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education, School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China
Abstract:
The performance of CLL resonant converter relates to the parameter design of its resonant network,for which,an optimal parameter design scheme is proposed based on the fundamental harmonic approximation method and the characteristic impedance analysis method. The DC gain characteristics of CLL resonant converter,the RMS current of resonant network and the voltage stress of resonant capacitor are analyzed,and the characteristic impedance method is applied to achieve the restrictive conditions for realizing the soft switching of power switch. The correctness of the proposed scheme is verified by the experimental results.
Key words:  CLL resonant converter  resonant inductance ratio  quality factor  circulating current loss  operational characteristics  electric converters  resonant circuits  design

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