基于分数阶PI~λD~μ控制的移相全桥ZVZCS变换器的研究  

Research on phase-shifted full-bridge ZVZCS converter based on fractional order PI~λD~μ control

作　　者：黄永健 刘毅力[1] 马龙涛 高歌 Huang Yongjian;Liu Yili;Ma Longtao;Gao Ge(Xi’an Polytechnic University,Xi’an 710048,China;State Grid Shaanxi Electric Power Company Tongchuan Power Supply Company,Tongchuan 727000,China)

机构地区：[1]西安工程大学,西安710048 [2]国网陕西省电力公司铜川供电公司,铜川727000

出　　处：《国外电子测量技术》2019年第11期81-85,共5页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金（51707141）;陕西省重点科技创新国家计划（2014KCT-16）项目资助

摘　　要：为改善电路性能,将分数阶PI^λD^μ控制应用到移相全桥ZVZCS变换器中。首先以Buck变换器为基础,结合移相全桥自身电路特性,建立移相全桥ZVZCS变换器的小信号模型;而后使用遗传算法分别寻优设计了最优分数阶PI^λD^μ控制器和最优整数阶PID控制器;最后基于Simulink平台搭建闭环电路仿真分析,比较移相全桥ZVZCS变换器分别处于两种控制器控制下的电路特性。仿真结果显示处于分数阶PIkD-控制器控制下的移相全桥ZVZCS变换器相较于处在整数阶控制下时,其在负载发生变化时的电压波动幅值更小、波动时长更短,具有更良好的动态性能。To improve the dynamic performance of the circuit,the fractional order PI^λD^μ control is applied to the phaseshifted full-bridge ZVZCS converter.Firstly,a small signal model of the phase-shifting full-bridge ZVZCS converter was established based on the Buck converter and combined with the circuit characteristics of the phase-shifting full-bridge.Then the optimal fractional order PI^λD^μ controller parameter and the optimal integer order PID controller are designed using Genetic Algorithm.Finally,based on the Simulink platform,the closed loop circuit simulation analysis is carried out to compare the circuit characteristics of the phase-shifted full-bridge ZVZCS converter under the control of the two controllers respectively.The simulation results show that the phase-shifted full-bridge ZVZCS converter controlled by the fractional-order PIxDflcontroller has better dynamic performance than it controlled by the integer-order controller,and the former’s the voltage fluctuation amplitude is smaller and the fluctuation time is shorter when the load changes.

关 键 词：移相全桥ZVZCS变换器 分数阶PI^λD^μ控制 改进的Oustaloup滤波器 遗传算法 

分 类 号：TN910.2[电子电信—通信与信息系统]