单相光伏并网逆变系统的鲁棒状态反馈控制策略  

The Robust State Feedback Control Strategy for Single-phase Photovoltaic Grid-connected Inverter System

作　　者：杨士保[1] 杨富文[1] 

机构地区：[1]华东理工大学信息科学与工程学院,上海市200237

出　　处：《电源学报》2013年第2期62-66,共5页Journal of Power Supply

基　　金：国家自然科学基金项目(61174064);国家重点基础研究发展计划(973计划)项目(2012CB720502);中央高校基本科研业务费专项资金资助项目(WJ0913001)

摘　　要：介绍了一种基于LCL滤波器并网逆变器的鲁棒电流控制器设计。该控制器的设计同时考虑了电网阻抗参数的不确定性和内模控制器对参考电流的跟踪和抑制电网的扰动。通过逆变器的状态变量和内模控制原理的结合设计出了鲁棒状态反馈控制器。最后,搭建了仿真平台,对鲁棒状态反馈控制器和PI控制器分别进行仿真与分析,结果表明鲁棒状态反馈控制器对电网负载变化具有良好的抑制作用。A robust current controller for grid-connected converters with LCL-filter was presented. The design of the controller considers uncertainty on the grid impedance parameter and includes an internal model structure that ensures asymptotic tracking of the sinusoidal current reference as well as disturbance rejection of the background voltage. A state feedback control law, which depends on the states of the converter and of the internal model controller, was considered here. Finally, a simulation platform was designed, a robust state feedback controller and PI controller were simulated, the results show that the robust state feedback controller has a good inhibitory effect on the grid load.

关 键 词：LCL滤波器 状态反馈控制器 并网逆变器 线性矩阵不等式 

分 类 号：TM344.1[电气工程—电机]