升压式谐振开关电容变换器中潜电路的一般规律  

General Law of Sneak Circuit Analysis in Step-Up Resonant Switched Capacitor Converters

作　　者：涂文娟[1] 丘东元[1] 张波[1] 

机构地区：[1]华南理工大学电力学院,广州510641

出　　处：《电工技术学报》2009年第4期102-107,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50507004;60474066和50877028);广东省自然科学基金(07006515和8521064101000014)资助项目

摘　　要：相对于降压式谐振开关电容变换器,升压式谐振开关电容变换器构成方式不同,潜电路发生条件也有较大区别。本文根据其构成特点与运行规律,应用图论法获取变换器中的潜在路径,详细讨论了n阶升压式谐振开关电容变换器的潜电路工作特性,推导出变换器发生潜电路时的输出电压特性以及潜电路发生条件,归纳其出现潜电路的一般规律,从而为避免潜电路的出现,使之正常工作提供了理论依据。研究结果表明,在负载、开关频率和开关电容等参数相同的情况下,若n阶变换器工作在正常状态下,则其低阶(n-1,n-2,…,2)变换器必然工作在正常状态下。最后,实验结果证实了结论的正确性。Comparing to step-down resonant switched capacitor （RSC） converter, the composing principle of step-up RSC converter is different, so their sneak circuit conditions are not same. Firstly, the sneak paths are found by the graph theory and the operation process with sneak circuit under different operating conditions is analyzed. Then the output voltage characteristic and sneak condition are studied. Thus, general law of sneak circuit analysis is proposed which offers design formula to hold back the sneak circuits in the step-up RSC converters. It is shown that, if n-stage RSC converter operates in normal condition, so do the low-stage ones （n-1, n-2, …, 2）. Finally, the conclusion is verified by the experimental results.

关 键 词：潜电路分析 谐振开关电容变换器 升压 n阶 

分 类 号：TM46[电气工程—电器]