双频BUCK变换器的性能分析及设计  

Performance Analysis and Design of Double Frequency BUCK Converter

作　　者：罗全明[1] 周雒维[1] 卢伟国[1] 杜雄[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电工技术学报》2008年第5期56-61,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50677071);重庆市自然科学基金重点项目(2005BA6017)

摘　　要：阐述了峰值电流控制双频BUCK变换器的工作原理,并对其性能进行了详细分析。特别通过对变换器功率传输路径的分析,提出了低频电感的选取原则。分析了变换器低频电感电流的次谐波振荡问题,并提出了抑制措施,实验验证了理论分析的正确性。In this paper, the theory of peak current controlled double frequency BUCK converter is described firstly. Based on this, the performance of this converter was analyzed in detail. The rule of how to establish the value of the low frequency inductor is proposed by analyzing the power transmission road of the converter. Especially, the sub-harmonic oscillation of the low frequency inductor current is analyzed and the method to solve this problem is proposed. Finally, the experimental results are given to prove the correction of the theory analysis.

关 键 词：双频BUCK变换器 性能分析 次谐波振荡 

分 类 号：TM461[电气工程—电器]