鲁棒H∞控制在并联Buck变换器中的应用研究  

Application Research of Robust H∞Control in Parallel Buck Converter

作　　者：孙维东 伍孟涛 闫小宇 葛芦生 SUN Weidong;WU Mengtao;YAN Xiaoyu;GE Lusheng(School of Electrical and Information Engineering,Anhui University of Technology,Maanshan 243032,China)

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：《现代信息科技》2022年第16期47-50,共4页Modern Information Technology

摘　　要：为了解决并联电源系统中因存在参数不确定性而导致系统动态性能下降这一问题,提出了状态反馈鲁棒H控制,引入了线性变参数(LPV)模型,结合LMI技术,将H控制问题转化成LMI问题,从而提高并联Buck变换器的抗干扰能力,并和传统的双闭环PI控制进行比较,通过仿真验证了基于鲁棒H控制的并联Buck变换器拥有更加良好的动态响应,同时也实现了并联变换器均流目的。In order to solve the problem that the dynamic performance of the parallel power system is degraded due to the existence of parameter uncertainty,this paper proposes a state feedback robust Hcontrol,introduces a Linear Parameter Varying(LPV)model,and combines the LMI technology,transforms the Hcontrol problem into a LMI problem,thereby improving the anti-interference ability of the parallel Buck converter.Compared with the traditional double closed-loop PI control,it is verified by simulation that the parallel Buck converter based on the robust Hcontrol has better dynamic response,and also achieves the purpose of parallel converter current sharing at the same time.

关 键 词：并联Buck变换器 鲁棒H∞控制 LPV模型 均流控制 

分 类 号：TP271.5[自动化与计算机技术—检测技术与自动化装置]