文档介绍：单相LCL并网逆变器多环控制策略的研究
侯立健1，朱长青1，陈雅2， 严雪飞1
(，河北 石家庄 050003；，天津 300073)
摘要：文章阐述了传统双环单相VSR控制策略存在的缺点，在此基础上,介绍了PR控制器的优势，用PR控制器代替PI控制器，同时采用陷波器校正的有源阻尼方法抑制LCL滤波器的谐振峰值，并加入电压前馈控制，构成了包含电压外环、并网电流控制环、电容电流环的多环控制系统。最后设置控制器参数，在Matlab/Simulink环境下搭建了仿真模型，仿真结果表明，该方案能够有效控制并网电流，滤波效果良好，抗电网电压扰动能力强,实现了并网电流和电网电压同步的控制目的，验证了其可行性和优越性。
关键词：电子负载；LCL滤波器；PR控制器；多环控制
中图分类号: TM464 文献标识码：A 文章编号：1001-1390（2015）00-0000-00
Research on multiple-loop control strategy for single-phase LCL grid-connected inverter
(Hou Lijian1,Zhu, Zhu Changqing1,Chen, Chen Ya2,Yan, Yan Xuefei1)
( Engineering College, Shijiazhuang 050003, Hebei, China. ;. Tianjin University, Tianjin 300073, China)
Abstract:ThisAbstract: This paper describes weakness of the control strategy of traditional double-loop for single-phase VSR, and on this basisbased on it, introduces the advantages of PR controller, so that the as to PR controller can replaces the PI controller. At the same time, the method of active damping, with the trap filter correction, is used to suppress the resonance peak value of the LCL filter. Moreover, the voltage feed-forward control method is put into use,use; as a result, the control method is a multiple-loop control system strategy that contains voltage outer loop,gridloop, grid-connected current control loop and capacitor current loop. Finally, the control parameters ar