LCL型并网逆变器控制技术综述  

Overview of control methods of LCL-based grid-connected inverter

作　　者：沈玲菲[1] 危韧勇[1] 李志勇[1] 徐保友[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《电源技术》2013年第12期2261-2264,共4页Chinese Journal of Power Sources

基　　金：中央高校基本科研业务费(201021200066)

摘　　要：三相并网逆变器采用LCL滤波器,具有更优的高频谐波衰减性,滤波效果更佳,但需考虑谐振抑制问题。针对LCL型并网逆变器的稳定控制展开研究,建立LCL型并网逆变器数学模型,分析了LCL滤波器高频谐振产生的机理和危害,详细介绍了LCL型并网逆变器电流控制、直接功率控制和模拟同步电机控制等方法的原理和应用,展望了LCL型并网逆变器控制的研究热点和研究方向。The three-phase grid-inverter with LCL filters has superior attenuation for the high frequency and better filter performance. The control stability of the LCL-type grid-connected inverter was studied, the LCL-type photovoltaic inverter mathematical model was established, and the LCL output filter resonance generation mechanism and hazards were analyzed. The control principles and methods of LCL-type photovoltaic inverter on the current dual closed-loop control, direct power control and mimic synchronous generator control was described. At last, the prospects of the LCL-type grid-connected inverter control research focus and research directions were discussed, and the advantages and disadvantages of several control strategies were summarized.

关 键 词：LCL并网逆变器 稳定控制 电流控制 直接功率控制 模拟同步电机控制 

分 类 号：TM464[电气工程—电器]