中南民族大学学报（自然科学版）2026，Vol.45Issue(3)：401-411,11.DOI:10.20056/j.cnki.ZNMDZK.20250850
弱电网下多逆变器并联系统的电容电压前馈谐振抑制策略
Capacitor voltage feedforward resonance suppression strategy for multi-inverter parallel system under weak grid
摘要
Abstract
In a weak grid environment,when multiple inverters are operated in parallel,the coupling effects between the inverters and the grid,as well as between the inverters themselves,are significantly enhanced,leading to the occurrence of resonance and threatening the safe and stable operation of the grid.To address this issue,an improved capacitor voltage feedforward resonance suppression strategy for a multi-inverter parallel system in a weak grid is proposed.Firstly,the control principle of a single inverter is analyzed,and its Norton equivalent model is constructed to analyze the resonance characteristics of the multi-inverter parallel system.Then,compared with the traditional grid voltage feedforward and grid-connected current feedforward strategies,an improved capacitor voltage notch filter feedforward resonance suppression strategy is proposed.Combined with the Newton optimization algorithm,the robustness of the system is improved during changes in grid-connected power and the number of parallel inverters.Finally,a simulation model of the multi-machine parallel system is built on a Hardware-in-the-loop(HiL)platform to verify the effectiveness of the proposed resonance suppression strategy.关键词
并网逆变器并联/谐振抑制/电容电压反馈Key words
grid-connected inverter parallel operation/resonance suppression/capacitor voltage feedback分类
信息技术与安全科学引用本文复制引用
刘梦洁,何顺帆,段启豪,李康锐,陈祥方,陈衡瑜..弱电网下多逆变器并联系统的电容电压前馈谐振抑制策略[J].中南民族大学学报（自然科学版）,2026,45(3):401-411,11.基金项目
国家自然科学基金资助项目(61903384) （61903384）
