作　　者： ; ; ; ;

机构地区： 湖南大学电气与信息工程学院

出　　处： 《电工技术学报》 2013年第10期217-223,共7页

摘　　要： 对采用平均模型对交错并联拓扑下的直驱式永磁同步风力发电机网侧变流器的环流问题进行了研究的同时,对三相电流在旋转坐标系下的零序分量的控制策略进行了深入分析,并从抑制环流的目的出发提出了在传统SVPWM调制算法基础上增加一个零序电流环的控制策略。仿真与实验结果验证了策略的可行性与正确性,表明提出的交错并联拓扑下的网侧变流器环流抑制策略具有较好的控制效果。 The circulating current problem in interleaved parallel topology of direct-drive permanent magnet synchronous generator（D-PMSG） grid-side converter is studied by using the average model. The control strategies for zero sequence component of three-phase current at the rotating coordinate system are analyzed. In order to inhibit circulating current, a control strategy, which contains an addition zero sequence current loop compared with traditional strategy, is proposed. Simulation and experiment results verify the feasibility and correctness of the strategy, which show that the proposed control strategy for grid side converter circulation inhibition under interleaved parallel topology has better control effect.

关 键 词： 直驱式永磁同步发电机 变流器 交错并联 环流

领　　域： [电气工程]