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
杨仲望 1金天均 1吕征宇1
作者信息
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.
Abstract
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.Rut 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Key words
voltage control/current control / small-signal modeling/soft-switching引用本文复制引用
出版年
2007
NETL
NSTL
维普
万方数据