简述了输出滤波器在逆变器并联中的作用,对传统LC输出滤波器在逆变器并联中存在的问题进行了分析,并提出了改进的非对称T型滤波器。改进的滤波器在逆变器并联的环流抑制和控制量的选择等方面优于LC输出滤波器。理论分析和仿真结果证明提出的输出滤波器改进方法简单而有效,并将其应用到并联电路试验中,起到了较好的效果。
This paper describes the function on output filter in parallel inverters, the problems have been analyzed in the traditional filters. Then the non- symmetry T- network filter is proposed, being superior to the LC filter on the aspect of restraining circulating current. Theory analysis and the simulation results have verified this improved method in output filter is simply and efficiency,the experimental results show the effective.