采用组合控制方案的双管升/降压变换器  

Two-switch Boost-Buck converter with integrated control scheme

作　　者：毛鹏[1] 童瑞婷[1] 

机构地区：[1]南京信息工程大学电气工程系,江苏南京210044

出　　处：《电源技术》2014年第7期1354-1355,1373,共3页Chinese Journal of Power Sources

基　　金：江苏省自然科学基金项目(BK2011826)

摘　　要：分析了现有单相级联型Boost-Buck功率因数校正变换器的控制原理,并指出了其存在的不足,在此基础上提出一种新型组合控制方案。该方案在Boost工作模式下采用平均电流控制,在Buck工作模式下采用电荷控制。新型控制方案可以确保变换器不论在升压还是降压工作模式期间,都可实现良好的输入电流控制效果,达到功率因数校正的目的。通过原理样机实验,对理论分析的正确性和控制方案的有效性进行了验证。Control theory of present single phase cascaded Boost-Buck power factor correction converter was analyzed, and the drawbacks of the control scheme were pointed out. A novel integrated control scheme constituting average current control in Boost mode and charge control in Buck mode was proposed. With this control scheme, the input current of the converter can be well controlled not only in Boost, but also in Buck mode stage, and the unity power factor is achieved. The correctness of theoretical analysis and effectiveness of the control scheme are verified through prototype experimental results.

关 键 词：升降压变换器 功率因数校正 级联型 组合控制 

分 类 号：TM47[电气工程—电器]