电工技术学报2017，Vol.32Issue(18)：248-258,11.DOI:10.19595/j.cnki.1000-6753.tces.160653
并网逆变器并联系统的鲁棒控制与环流分析
Robust Control and Circulating Current Analysis for Grid-Connected Parallel Inverters
摘要
Abstract
A robust control strategy for the grid-connected parallel inverters is developed in this paper. Based on the analysis of the circuit structure and circulating current of the parallel system, a simple single leg control method is proposed. Structured singular value μ synthesis based on H∞ control theory is applied, to decrease the impacts from various uncertainties as well as improve the stability and performance of the parallel system. As a result, the accurate current control and circulating current restraining are realized. Further, the range of the uncertainty is given for stable operation of the system, while the controller can ensure the stability in the determined range. The simulation and experimental results show the effectiveness of the proposed control scheme.关键词
逆变器并联系统/并网/鲁棒控制/μ综合/环流Key words
Parallel inverter system/grid connection/robust control/μ synthesis/circulating current分类
信息技术与安全科学引用本文复制引用
方红伟,陶月,肖朝霞,贺叶君..并网逆变器并联系统的鲁棒控制与环流分析[J].电工技术学报,2017,32(18):248-258,11.基金项目
国家自然科学基金项目(51577124)、天津市应用基础与前沿技术研究计划重点项目(15JCZDJC32100)和天津市科技支撑计划项目资助(15ZCZDGX00980). （51577124）
