外转子双馈双凸极永磁风力发电机的设计与研究  

Design and Analysis of an Outer-rotor Stator-Doubly-Fed Doubly-Salient PM Machine for Wind Power Generation

作　　者：张东 龚宇[2] 施进浩[3] 江建中[2] 郑文鹏[3] 

机构地区：[1]上海永大吉亿电机设备有限公司,上海201615 [2]上海大学,上海200072 [3]中国电子科技集团公司第二十一研究所,上海200033

出　　处：《微特电机》2009年第1期4-5,19,共3页Small & Special Electrical Machines

摘　　要：提出了一种新型的外转子双馈双凸极永磁风力发电机。该电机采用混合励磁结构形式,在电机的定子上同时存在直流励磁绕组和永磁体作为电机的励磁;电机的电枢绕组也安放在定子上,实现了定子的双馈形式;外转子全部由铁心组成,结构简单。该电机的创新在于每一块永磁体都有一对磁路与之相并联的附加气隙,这样可以更加有效地实现对气隙磁场的调节。由于气隙磁场可以随意调节,所以该电机可以在不同的转速和负载电流的情况下实现恒定的输出电压。A new outer - rotor stator - doubly - fed doubly - salient PM machine for wind power generation was presented. The key of the proposed machine was to incorporate both DC field windings and PMs in the inner stator, hence offering a compact arrangement of hybrid field excitations. Whilst armature windings were located in salient poles of the outer stator, the outer rotor was simply composed of salient poles without having windings or PMs. In addition, an auxiliary airgap was purposely created in shunt with each PM, hence providing an amplification effect for flux regulation. By using flux control, the proposed machine maintained constant output voltage under different rotor speeds and load currents, which was highly desirable for wind power generation.

关 键 词：双馈双凸极永磁风力发电机 附加气隙 混合励磁 

分 类 号：TM315[电气工程—电机] TM351