重复控制在逆变器无互联线并联系统中的研究  

Research on repetitive control in wireless parallel connection system of inverter

作　　者：刘烨[1] 魏金成[1] 石倩[2] 陈勇[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]湖南大学电气与信息工程学院,湖南长沙410012

出　　处：《电源技术》2014年第6期1137-1139,1175,共4页Chinese Journal of Power Sources

基　　金：研究生创新基金(cjj201253);四川省教育厅项目(12ZA285)

摘　　要：无互联信号线逆变器并联系统,控制精度要求很高,否则均流效果很差。针对无联线并联技术的这种特点提出了将重复控制与PI-P电压电流双闭环控制(简称PI控制)结合的复合控制方法应用到该系统中来。这种控制方法综合了PI控制有比较快的动态响应速度,并且利用重复控制的特性改善了带非线性负载的能力及并联环流特性,提高了系统稳态控制精度,减少了谐波含量,是一种性能突出的复合控制方法。通过MATLAB仿真证明了该方法的可行性和优越性。For wireless parallel inverters system, there is a high requirement for control precision, otherwise current-balancing effect would be very poor. Based on this characteristic of wireless paralleling technology, the combination control method of repetitive control with PI-P voltage and current double close loop control （abbreviation as PI control） applied in this system was proposed. This control method, which combines the faster dynamic response speed of PI control, improves not only the capacity with nonlinear load and parallel circulation characteristics by characteristics of repetitive control, but also the steady state control accuracy of the system, meanwhile reduces the harmonic content. It＇s an outstanding composite control method. The feasibility and superiority of this method by MATLAB simulation are verified.

关 键 词：逆变器 重复控制 并联 环流 无互联线 PI—P 

分 类 号：TM714[电气工程—电力系统及自动化]