不对称半桥电压控制模式与电流控制模式研究  

Investigation of Voltage-programmed and Current-programmed Asymmetrical Half-Bridge

作　　者：杨仲望[1] 金天均[1] 吕征宇[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2007年第9期44-46,共3页Power Electronics

摘　　要：有关不对称半桥的研究显示,电压控制模式不对称半桥的小信号模型具有4个极点,3个零点。其闭环网络设计复杂,难以满足高穿越频率的要求。但目前有关电流控制模式不对称半桥的研究还很少。在介绍电压控制模式不对称半桥的原理以及小信号模型的基础上,提出在不对称半桥中引入电流控制模式以改善系统特性的方法,同时给出了该方法的工作原理,并对小信号模型进行分析推导,最后将两种控制模式进行了对比。Researches about asymmetrical half-bridge review that there are four poles and three zeroes under Voltage control mode,which makes it hard to compensate the system steady under high crossover frequencies, But little work had been done about using current control mode in asymmetrical half-bridge.The principle and small-signal mode of asymmetrical half-bridge under voltage control mode are presented.The current control mode applied in asymmetrical half- bridge is also introduced.The small-signal mode will be analyzed, and at last there will be some comparisons between the voltage programmed control method and the current programmed control method used in asymmetrical half-bridge.

关 键 词：电压控制 电流控制/小信号建模 软开关 

分 类 号：TM46[电气工程—电器]