摘要
为削弱永磁风力发电机的齿槽转矩,提高电机性能,采用了在定子上开辅助槽和将永磁体改为面包型的方法。通过能量法分析齿槽转矩的产生机理,探讨了定子辅助槽和面包型永磁体对发电机齿槽转矩的影响;利用有限元软件建立20极36槽表贴式永磁同步发电机模型,基于该模型对其开设辅助槽的数量、槽间距、槽口宽度以及辅助槽深度等相关参数对齿槽转矩的影响进行分析,最终确定辅助槽的最佳设计方案;还研究了面包型永磁体对齿槽转矩的影响。结果表明,采用定子开设辅助槽和面包型永磁体的措施可以有效抑制发电机的齿槽转矩。
In order to weaken the cogging torque of the permanent magnet wind turbine and improve the performance of the motor,the methods of opening auxiliary slots on the stator and changing the permanent magnets to bread-shaped were adopted.The generation mechanism of cogging torque was analyzed by the energy method,and the influence of the stator auxiliary slot-and shaped permanent magnet on the cogging torque of the generator was discussed.The finite element software was used to establish a 20-pole 36-slot surface-mounted permanent magnet synchronous generator model.Based on the model,the influence of related parameters such as the number of auxiliary slots,slot spacing,slot width and auxiliary slot depth on the cogging torque was analyzed,and the optimal design scheme of the auxiliary slots was finally determined.Effect of magnets on cogging torque.The results show that the cotting torque of the generator can be effectively inhibited by the measures of opening auxiliary slots and bread-shaped permanent magnets in the stator.
作者
安忠良
施劭杰
周红芳
AN Zhongliang;SHI Shaojie;ZHOU Hongfang(National Engineering Research Center for REPM Electrical Machines of Shenyang University of Technology,Shenyang 110870,China;Zhejiang Xizi Forward Electrical Machinery Co.,LTD.,Hangzhou 311300,China)
出处
《微电机》
2023年第6期26-30,37,共6页
Micromotors
关键词
永磁风力发电机
齿槽转矩
辅助槽
面包型永磁体
permanent magnet wind turbine
cogging torque
auxiliary slot
bread-type permanent magnets
