电测与仪表Issue(21)：74-78,5.
基于 LCL 型三相并网逆变器的改进 PR 控制策略研究
Research on Improved PR Control Strategy for Three-Phase Grid-Connected Inverter Based on LCL Filter
摘要
Abstract
Although the linear control represented by d-q coordinates vector control can eliminate the system steady-state error, there are power coupling problems in the system,which makes the system be difficult to realize stable oper-ation with a unit power factor.A static alpha beta coordinates system based PR control strategy is proposed in this pa-per based on the traditional current PI control.The PR control has been improved which will reduce complex coordi-nate transformation.Dynamic contrast simulation show that the improved PR control grid inverter apparatus has good dynamic response performance and can realize no steady-state error tracking current reference value.Moreover, it will quickly track the power grid voltage after the net current mutation so as to realize the decoupling control of active and reactive power.Analysis on harmonic content show that the improved PR control strategy has certain harmonic suppression.关键词
功率单位因数/PR控制器/并网逆变器/电网电压/解耦控制Key words
unit power factor/PR controller/grid inverter/grid voltage/decoupling control分类
信息技术与安全科学引用本文复制引用
谢永流,李永东,程志江,华东,赵方华,高龙..基于 LCL 型三相并网逆变器的改进 PR 控制策略研究[J].电测与仪表,2014,(21):74-78,5.基金项目
国家自然科学资助基金（61364010）；科技支疆项目（2013911036）；新疆研究生科研创新项目 （）
