电力系统保护与控制2018，Vol.46Issue(9)：122-128,7.DOI:10.7667/PSPC170656
逆变器侧电流反馈的LCL型三相光伏并网逆变器解耦控制
Decoupling control strategy with inverter-side current feedback for LCL-type three-phase PV grid-connected inverter
摘要
Abstract
In order to realize the decoupling control of dq axis for three-phase PV grid-connected system and speed up the system dynamic response speed, a decoulpling control strategy is proposed in the synchronous rotating reference frame. Meanwhile, PV array power feed-forward and full grid-voltage feed-forward control are respectively introduced into the voltage outer128122 loop and current inner loop. The coupling terms are considered as disturbances, and the feed-forward decoupling coefficients are obtained by solving the closed loop transfer function,and the decoupling effect of the dq axis is analyzed when the filter parameters change. The system simulation model is established by Matlab, the simulation results show the proposed control strategy makes the three-phase PV grid-connected inverter with LCL filter not only realize the decoupling control of dq axis,but also has good static and dynamic performance under the condition of the strong robustness and high grid current quality.关键词
光伏并网/LCL滤波/逆变器侧电流反馈/解耦控制/电网电压前馈/功率前馈Key words
PV grid connected/LCL filter/inverter side current feedback/decoupling control/grid voltage feed-forward/power feed-forward引用本文复制引用
高锋阳,杜强,乔垚,强国栋..逆变器侧电流反馈的LCL型三相光伏并网逆变器解耦控制[J].电力系统保护与控制,2018,46(9):122-128,7.基金项目
甘肃省科技支撑计划项目资助(1204GKCA038)This work is supported by Science and Technology Support Project of Gansu Province(No.1204GKCA038). （1204GKCA038）
