基于Boost变换器的PSM建模和分析  

Modeling and Analysis for PSM based on Boost Converter

作　　者：牛全民[1,2] 罗萍[1] 张波[1] 李肇基[1] 

机构地区：[1]成都电子科技大学 [2]空军雷达学院,湖北武汉430010

出　　处：《电力电子技术》2005年第4期109-111,共3页Power Electronics

摘　　要：基于Boost变换器,利用状态空间平均法对一种新的调制模式——跨周调制(PulseSkippingModulation;简称PSM)进行建模和特性分析,推导出电感电流连续(CCM)和电感电流断续(DCM)时系统的变压比,调制度M与负载的关系以及系统转换效率的理想化公式,得到PSM是一种可采用的控制模式,尤其在轻载下具有高转换效率的结论,并设计了具有PSM调制特性的控制电路,给出实验仿真结果。Based on boost converter,a new mode named Pulse Skipping Modulation （PSM） is modeled and analyzed using state space averaged method.Some useful formulated such as output voltage ratio,relationship between modulation factor and load, conversion efficiency are presented in this paper.We can easily get the conclusion that PSM is an available control mode with high efficiency, especially for converter with light loads.The results of experiment and simulation are given by designing the control circuit with PSM characteristic.

关 键 词：变换器 调制度/跨周调制 

分 类 号：TM46[电气工程—电器]