开关频率对并联DC/DC变换器系统影响的研究  

Switching Frequency Study of Parallel DC/DC Converter

作　　者：丁烨 葛芦生 张瑞 吴津庆 

机构地区：[1]安徽工业大学电气与信息工程学院,安徽马鞍山243032

出　　处：《工业控制计算机》2018年第2期135-136,139,共3页Industrial Control Computer

基　　金：国家自然科学基金(51277003)

摘　　要：DC/DC变换器是开关电源的重要组成部分,而不同的开关频率对系统的影响目前尚没有统一的定论。采用传统的双闭环比例积分(PI)控制作为其闭环控制系统,构建基于FPGA的并联Buck变换器实验平台,通过实验对比基于主从均流策略的双闭环PI控制系统在不同开关频率下的动态过程差异性,得出适合该系统的最佳开关频率,为后续研究提供基础。In this paper,the traditional double closed-loop proportional-integral(PI)control is used as its closed-loop control system and a FPGA-based parallel Buck converter experimental platform is constructed.Dynamic process differences with different switching frequencies are contrasted by the experiment based on double closed-loop PI control and the master-slave current sharing strategy,and the best suitable switching frequency for the system is obtained,which would lay the basis for subsequent research.

关 键 词：并联DC/DC变换器 双闭环PI控制 FPGA 

分 类 号：TM46[电气工程—电器]