基于模糊自适应的改进型重复控制逆变器研究
Study of Improved Repetitive Control Inverter Based on Fuzzy Adaptive
宋阳阳 1曾洁 1李延帅1
作者信息
- 1. 大连交通大学 自动化与电气工程学院,大连 116028
- 折叠
摘要
该文以单相全桥逆变器为研究对象,在整体采用双重控制策略的基础上,引入了模糊控制技术,采用具有良好可调性与稳定性的模糊自适应PI控制器代替传统PI环节,使系统能够更好地抵抗各种非线性扰动问题,提高了系统的动态性能;同时,通过重复控制减小输出电压的谐波含量,提高输出电压的质量,改善了系统的稳态特性.最后,对所提策略进行MATLAB/Simulink仿真验证,证实方法在面对不同扰动时仍具有较好的控制效果.
Abstract
In this paper,the single-phase full-bridge inverter is taken as the research object,and fuzzy control technol-ogy is introduced on the basis of the overall double-closed-loop control strategy,replacing the traditional PI controller with the fuzzy adaptive PI controller with strong dynamic adjustment capability,which strengthens the system's ability of resisting parameter variations and various nonlinear uncertainty perturbations,and improves the dynamic perfor-mance of the system.At the same time,the harmonic content of the output voltage is reduced through the repetition control which improves the quality of the output voltage and improves the steady state characteristics of the system.Finally,the proposed strategy is verified by MATLAB/Simulink simulation,which confirms that the method still has a good control effect when facing different disturbances.
关键词
单相全桥逆变器/模糊自适应/重复控制/谐波抑制Key words
single-phase inverter/fuzzy adaptive/repetitive control/harmonic suppression引用本文复制引用
基金项目
辽宁省教育厅科技计划项目(LJKMZ20220850)
出版年
2024
NETL
NSTL
万方数据