一种改进型基波等效分析方法  

A Modified Fundamental Harmonic Approximation Analysis Method

作　　者：闫卫国[1] 蒋菱[1] 王议锋 陈营 冀睿琳 张书槐 YAN Weiguo;JIANG Ling;WANG Yifeng;CHEN Ying;JI Ruilin;ZHANG Shuhuai(State Grid Tianjin Electric Power Company,Tianjin 300010,China;School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China;State Grid Shandong Electric Power Maintenance Company,Jinan 250118,Shandong,China;State Grid Tianjin Power Costumer Service Center,Tianjin 300210,China)

机构地区：[1]天津市电力公司,天津300010 [2]天津大学电气自动化与信息工程学院,天津300072 [3]国网山东省电力公司检修公司,山东济南250118 [4]国网天津客服中心,天津300210

出　　处：《电气传动》2018年第7期29-34,共6页Electric Drive

基　　金：国网天津市电力公司科学技术项目(SGTYHT/14-JS-188;SGTYHT/14-JS-191)

摘　　要：提出了一种改进型的基波等效分析方法,针对传统的基波等效分析法在精度上存在的不足进行修正和改善。建立合理的假设与等效,并基于LLC谐振变换器采用新型分析方法构建电压增益和电压、电流应力的数学模型。并对改进型基波等效分析法的修正策略进行了详细的分析叙述。最终通过实验结果以及和其他分析方法的对比,证明了所提出的分析方法的正确性,并且展示了其在计算电压增益和电压、电流应力等方面的精度和准确性上的优势,将传统FHA计算的误差最高降低了30%。A modified fundamental harmonic approximation（FHA）method was proposed. Compared with the traditional fundamental harmonic approximation method,the new analysis method improved the accuracy of the calculation. By the modified FHA,a series of assumption and equivalence were established. Also,based on the LLC resonant converter,its mathematical models of voltage gain and voltage and current stress were developed. Moreover,the modified strategy of the modified FHA was analyzed and described in detail. Finally,the corresponding experimental results verify the correctness of the proposed analysis method comparing with other existing analysis method,and it exhibits a better calculation precision in voltage gain and the voltage and current stress. By the modified FHA,the error caused by the traditional FHA can be reduced up to 30%.

关 键 词：基波等效 谐振变换器 电压增益 参数优化 

分 类 号：TM464[电气工程—电器]