摘要
光伏并网微逆变器以其高变换效率、最大化系统发电量和扩展灵活等独特优势而备受青睐,目前已有的拓扑结构和控制算法很难兼顾高效简单、寿命长等要求。研究表明,反激式变换器结构简单、输入输出隔离,广泛应用于中小模块电源。在此对基于反激式变换器的微逆变器系统进行研究,建立其在电流连续运行模式下的系统模型,设计双闭环控制方案,并进行了仿真和实验研究,结果证明系统模型的正确性和所设计的控制器具有良好的控制性能和可行性。
Grid-connected photovoltaic micro-inverter has been greatly valued for its high conversion efficiency, maximize power generation capacity and flexible extensibility and lots of topology and corresponding control scheme which are hard to meet the requirements of simple, effective and long life have been proposed currently.Studies have shown that flyback converter is widely used in small and medium power modules which is featured by simple, electric isolation be- tween input and output and so on.Micro-inverter system based on the flyback converter has been studied and system model is established under continuous current mode and double closed-loop control scheme is designed.Simulation and experiment indicate the correctness of system model and good control performance and feasibility of the controller.
出处
《电力电子技术》
CSCD
北大核心
2015年第3期69-71,共3页
Power Electronics
基金
长沙市科技局计划项目(K1301021-11)
中南大学中央高校基本科研业务费专项资金(2013zzts228)~~
关键词
逆变器
反激式变换器
双闭环
inverter
flyback converter
double closed-loop
