电力系统及其自动化学报2019，Vol.31Issue(6)：21-27,7.DOI:10.19635/j.cnki.csu-epsa.000037
基于偏差解耦扰动观测器的多重PR控制策略
Multiple Proportional Resonant Control Strategy Based on Deviation Decouple Disturbance Observer
摘要
Abstract
The dynamic control performance of a three-phase grid-connected inverter with an L-type filter circuit will de?crease when the filter inductance and load parameters change abruptly due to the existence of a current coupling term in its mathematical model under the rotation coordinate system of dq axis. To solve this problem,amultiple proportional resonant(MPR)scheme with deviation decouple control-disturbance observer(DDC-DOB)was proposed,which consist?ed of DDC-DOB and inductance current feedback loop on grid side. MPR control was adopted in the current feedback loop control instead of the traditional PI control,while DDC-DOB was combined to observe the voltage error caused by the variation of inductance parameters and the current coupling on the dq axis. Afterwards,the measurement value was fedback to the input as a compensation signal. Simulation and experimental results showed that the proposed method had a satisfying dynamic performance and stronger robustness,which can effectively reduce the total harmonic distor?tion of grid current.关键词
三相并网逆变器/多重比例谐振控制/偏差解耦/谐波畸变率Key words
three-phase grid inverter/multiple proportional resonant(MPR)control/deviation decouple/total harmonic distortion(THD)分类
信息技术与安全科学引用本文复制引用
王晓兰,刘向辰,杨沛豪,丁坤,张珑耀..基于偏差解耦扰动观测器的多重PR控制策略[J].电力系统及其自动化学报,2019,31(6):21-27,7.基金项目
国家自然科学基金资助项目(61203100) （61203100）
中央高校基本科研业务费基金资助项目(16MS42) （16MS42）
