基于电流基准的开关变换器脉冲序列控制方法  

Current referenced pulse train control technique applied to switching converter

作　　者：秦明[1] 许建平[1] 高玉[1] 王金平[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《物理学报》2012年第3期17-25,共9页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50677056)资助的课题~~

摘　　要：提出和分析了一种新的开关DC-DC变换器控制方法,基于电流基准的脉冲序列(current referenced pulse train.CR-PT)控制方法.CR-PT控制方法通过在每个开关周期检测和比较变换器的输出电压和负载电流,在多个等级不同的预设脉冲中选取其一作为该周期的有效控制信号.以Buck变换器为例对CR-PT控制方法的工作原理、实现方式、控制规律、稳态和瞬态特性进行了详细研究.研究结果表明:CR-PT控制在具有瞬态响应速度快、设计和实现简单易行、稳定性好等优点的同时,其稳态性能远优于已有的脉冲序列控制.A new control technique,current referenced pulse train（CR-PT）,applied to switching dc-dc converter is proposed and analyzed in this paper.By sensing and comparing the output voltage and the load current at each switching cycle,an appropriate pulse is selected from among several preset pulses as an active control signal of converter.A buck converter is taken as an example to illustrate the principle,the application,the regulation,the steady state performance and the transient performance of CR-PT control scheme.The study results show that the CR-PT control enjoys the fast transient response,the convenient implementation and the stability,and the steady state performance of CR-PT control is much better than that of pulse train control.

关 键 词：开关变换器 基于电流基准的脉冲序列 控制技术 BUCK变换器 

分 类 号：TM46[电气工程—电器]