电力系统及其自动化学报2025，Vol.37Issue(4)：1-10,10.DOI:10.19635/j.cnki.csu-epsa.001498
并网逆变器3/2阶双模频率自适应复合重复控制
3/2-order Dual-mode Frequency Adaptive Compound Repetitive Control for Grid-connected Inverter
摘要
Abstract
Repetitive control is widely used in grid-connected inverters owing to its good harmonic suppression perfor-mance.However,the harmonic suppression performance of this control strategy is significantly reduced in the case of frequency fluctuations.To solve this problem,a 3/2-order dual-mode frequency adaptive compound repetitive control scheme is proposed in this paper.First,a high-order branch is incorporated into the dual-mode repetitive control sys-tem,and the fractional-order delay caused by frequency fluctuations is accurately approximated by an infinite impulse response filter in three repetitive control internal models.Second,the dynamic performance of the repetitive control sys-tem is optimized by using a compound control structure consisting of repetitive control and proportional coefficient in parallel.Third,the stability of the proposed control scheme is analyzed,and the design and optimization processes of system parameters are also given.Finally,simulation results show that the proposed control strategy has an excellent harmonic suppression performance and a good dynamic performance under frequency fluctuations.关键词
双模重复控制/并网逆变器/分数阶延迟/谐波抑制/频率自适应Key words
dual-mode repetitive control/grid-connected inverter/fractional-order delay/harmonic suppression/fre-quency adaptive分类
信息技术与安全科学引用本文复制引用
胡浩,章晓龙,傅晓帆,周克亮,郑华俊..并网逆变器3/2阶双模频率自适应复合重复控制[J].电力系统及其自动化学报,2025,37(4):1-10,10.基金项目
国家自然科学基金资助项目(52367019) （52367019）
贵州省科技计划资助项目(黔科合基础-ZK[2023]一般075). （黔科合基础-ZK[2023]一般075）
