电测与仪表2018，Vol.55Issue(4)：78-86,9.
LCL并网逆变器改进加权电流控制方法及其鲁棒性分析
Improvement and robustness analysis of the weighted average current control based on LCL grid-connected inverter
摘要
Abstract
The weighted average current control (WACC) method can reduce the order of control system of LCL gridconnected inverter,which will improve the stability and bandwidth of the control system.While the resonance peak of grid-connected inverter output currents cannot be suppressed by the WACC method.When the inductance of the LCL filter varies,WACC method may be unstable.To solve this problem,the improved weighted average current control methods of attaching different current feedbacks without extra sensor are discussed.An improved method is selected with better suppression effect of resonance peak and smaller steady-state error.This method damps the resonance peak of inverter output currents and improves robustness of the control system under the premise of reducing the order of the control system.The correctness of theoretical analysis is verified by the simulation results.关键词
并网逆变器/LCL滤波器/加权电流控制方法/鲁棒性Key words
grid-connected inverter/LCL filter/the weighted average current control/robustness分类
信息技术与安全科学引用本文复制引用
王碧芳,李尚盛,瞿李锋,曹艳..LCL并网逆变器改进加权电流控制方法及其鲁棒性分析[J].电测与仪表,2018,55(4):78-86,9.基金项目
湖北省教育厅科技项目(B2013264) （B2013264）
