LLCL型并网逆变器二阶高增益重复控制  

Second-order Higher Gain Repetitive Control for LLCL-type Grid-connected Inverters

作　　者：章晓龙 胡浩[1] 傅晓帆[1] 周克亮 郑华俊 ZHANG Xiaolong;HU Hao;FU Xiaofan;ZHOU Keliang;ZHENG Huajun(School of Electrical Engineering,Guizhou University,Guiyang 550025,China;School of Automation,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025 [2]武汉理工大学自动化学院,湖北武汉430070

出　　处：《智慧电力》2024年第12期27-34,共8页Smart Power

基　　金：国家自然科学基金资助项目(52367019);贵州省省级科技计划项目资助(黔科合基础-ZK[2023]一般075)。

摘　　要：比例积分多谐振重复控制(PIMR-RC)因其良好的谐波抑制能力和动态性能得到广泛的应用,然而其应对频率波动的鲁棒性较差,而二阶重复控制(SORC)可以提供高效的解决方案。为此,提出将SORC应用于PIMR-RC中,构成二阶高增益重复控制(SOHG-RC)以提升控制器的性能,并有效改善控制器的频率适应性。首先,设计二阶高增益重复控制的结构;其次,分析二阶高增益重复控制器的稳定性和参数设计方法;最后,构建基于SOHG-RC的单相LLCL型并网逆变器仿真模型进行分析,结果验证了所提控制方案的有效性和优越性。Proportional-integral multi-resonant repetitive control(PIMR-RC)has been widely used due to its good harmonic rejection and dynamic performance.However,its robust to frequency fluctuation is poor,and second-order repetitive control(SORC)can provide an effective solution.To this end,the paper applies SORC to PIMR-RC to form a second-order higher gain repetitive control(SOHG-RC),improving the control performance and frequency adaptability of the controller effectively.Firstly,the structure of SOHG-RC is designed.Then the stability and parameter design method of the second-order higher gain repetitive controller are analyzed.Finally,the simulation model of the single-phase LLCL-type grid-connected inverter based on SOHG-RC is developed to do an analysis.The results verify the effectiveness and superiority of the proposed control scheme.

关 键 词：LLCL型并网逆变器 PIMR-RC SOHG-RC 频率适应性 

分 类 号：TM464[电气工程—电器]