电气传动2025，Vol.55Issue(9)：61-67,7.DOI:10.19457/j.1001-2095.dqcd25805
弱电网下LCL型逆变器的改进有源阻尼控制策略
Improved Active Damping Control Strategy for LCL Inverter in Weak Grid
曲晨明 1郭昆丽 1白阳 1李航 1朱婷华 1马鹏1
作者信息
- 1. 西安工程大学电子信息学院,陕西 西安 710600
- 折叠
摘要
Abstract
Considering the influence of grid voltage background harmonics in weak current networks,reverse harmonic peaks appear in the grid-connected current under weighted average current control(WACC),making it impossible for the system to achieve zero pole cancellation and thus affecting the stability of the grid-connected system.An improved weighted average current(WAC)control strategy that effectively tracks the grid-connected current through a quasi-proportional resonant controller was proposed.Introduced a frequency selection link into the grid voltage feedforward channel to suppress high-order harmonics,and connected in series to eliminate phase lag within the reverse resonance peak frequency range caused by the delay link,thereby improving system stability.Theoretical analysis and Matlab/Simulink simulation results show that the improved WAC control strategy proposed can improve the stability and adaptability of LCL inverters in weak current networks.关键词
弱电网/LCL型逆变器/加权平均电流控制/并网逆变器/选频环节/超前补偿器Key words
weak grids/LCL inverter/weighted average current control(WACC)/grid-connected inverter/frequency selection link/lead compensator分类
信息技术与安全科学引用本文复制引用
曲晨明,郭昆丽,白阳,李航,朱婷华,马鹏..弱电网下LCL型逆变器的改进有源阻尼控制策略[J].电气传动,2025,55(9):61-67,7.
