基于改进幂次趋近律的滑模控制H桥逆变器的非线性行为  

Nonlinear behaviors of H-bridge inverter based on sliding mode control with improved power reach law

作　　者：胡娟 江伟[1] 吴荣华 HU Juan;JANG Wei;WU Ronghua(Fundamental Science on Radioactive Geology and Exploration Technology Laboratory,East China Institute of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,江西南昌330013

出　　处：《安徽大学学报（自然科学版）》2020年第2期66-71,共6页Journal of Anhui University(Natural Science Edition)

基　　金：江西省教育厅科技项目(171509,171510,181519);江西省新能源工艺及装备工程技术研究中心开放基金资助项目(JXNE2017-07);放射性地质与勘探技术国防重点学科实验室开放基金资助项目(RGET1813);江西省高校人文社科项目(JY19103);2017年抚州市科技计划项目(技术创新引导项目14)。

摘　　要：滑模控制具有响应速度快和鲁棒性强等优点,在H桥逆变器的控制中有广泛应用.为改善滑模控制中的抖振现象,将改进幂次趋近律引入滑模控制H桥逆变器.分析逆变器工作过程,运用频闪映射理论建立逆变器的离散数学模型;利用折叠图和分岔图,研究不同控制参数下逆变器出现的非线性行为.研究结果表明:逆变器中存在复杂的非线性行为,同时出现了多倍数的周期状态.Sliding mode control has the advantages of fast response speed and strong robustness,so it has been widely used in the control of H-bridge inverters.In order to improve the chattering phenomenon in sliding mode control,an improved power reach law was introduced into the sliding mode control H-bridge inverter.The working process of inverter was analyzed,and the discrete mathematical model of the inverter was established using stroboscopic mapping theory.Using the folded graph and bifurcation graph,the nonlinear behavior of the inverter under different control parameters was studied.The research results showed that there were complex nonlinear behaviors in the inverter,and the multi-period bifurcations existed at the same time.

关 键 词：H桥逆变器 改进幂次趋近律 滑模控制 非线性行为 

分 类 号：TM464[电气工程—电器]