单相并网逆变器的鲁棒控制研究  

Robust Control for Single Phase Grid-connected Inverters

作　　者：白真贵[1] 王正仕[1] 陈辉明[1] 陈广泰[2] 高永军[2] 张海钰[1] 

机构地区：[1]浙江大学电气学院,浙江杭州310027 [2]中国北车集团永济新时速电机电器公司,山西永济044502

出　　处：《控制工程》2011年第1期100-104,共5页Control Engineering of China

基　　金：国家自然科学基金重点资助项目(50437010);浙江省自然科学基金资助项目(X106873)

摘　　要：针对分布式发电对并网逆变器的控制性能要求,介绍了一种基于误差空间法的鲁棒控制器在并网逆变器中的应用。该控制器以现代控制理论为设计基础,将系统跟踪误差作为状态变量。系统控制目标是使得输出误差随时间推移而趋近于零。因而,与传统的控制方法相比,即使在电网电压波动和畸变情况下,鲁棒控制仍能保证系统零稳态误差跟踪正弦参考信号,消除并网输出电流的相位漂移,实现单位功率因数输出,改善电能质量。通过理论分析,给出了该控制器参数的详细设计方法。采用美国某公司的TMS320F2808 DSP芯片搭建了数字控制平台。5 kW实验样机上的实验结果验证了理论和仿真分析的正确性。To meet the requirement of control performance in distributed generation（DG）,a robust controller based on error space method is proposed,and applied to the grid-connected inverter.Based on the modern control theory,the system tracking error is considered as the state variable.To make the output error tend to zero is the control of this controller.Compared to the traditional control methods,even in the condition of fluctuation or distortion of grid-voltage,the zero steady-state error to track the sine command can also be guaranteed with robust control,the phase shifting of the output current can be eliminated,and the united power factor can be achieved.The power quality of the mains is improved.A parameter design procedure is then discussed based on theoretical analysis.TMS320F2808 DSP of corporation is used to found the digital control platform.Experimental results of a 5 kW experimental prototype show the validity of the theoretical and simulation analysis.

关 键 词：并网逆变器 误差空间 鲁棒控制 零稳态误差 功率因数 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]