摘要
通过分析得出异步永磁同步电机(LSPMSM)的总齿槽转矩可以由每个对应磁极所产生的齿槽转矩分量叠加而成,并由此提出了一种基于磁极偏移的方法来削弱电机齿槽转矩。由于磁极的偏移,使得由该磁极和定子齿相互作用产生的齿槽转矩相位发生了改变。因此当磁极偏移适当的角度时,各个磁极产生的齿槽转矩有可能相互抵消。通过傅里叶分析,得出了不同极槽配合时电机的齿槽转矩表达式,并确定了不同极槽配合时磁极偏移角的公式。通过有限元仿真证明,该方法能够降低电机的齿槽转矩幅值。
The overall cogging torque can be achieved by the sum of the cogging torque component generated by each pole, and magnet shifting method that can reduce the cogging torque is proposed. Due to magnet shifting, the phase of cog- ging torque caused by the interaction between magnet and stator teeth would be changed. Therefore, when the magnet was shifted for an appropriate angle, the cogging torque can be offset each other. According to the Fourier analysis, the cogging torque expression and the formula of magnet shift angel of motor with different s｜ot-pole combinations can be achieved. By the finite element simulation, the method can reduce the amplitude of cogging torque.
出处
《微特电机》
北大核心
2017年第4期43-46,共4页
Small & Special Electrical Machines
基金
国家自然科学基金项目(51607078)
三峡大学人才启动基金项目(KJ2013B078)
湖北省微电网工程技术研究中心开放基金项目(2015KDW03)
关键词
异步永磁同步电机(LSPMSM)
齿槽转矩
有限元分析
磁极偏移
line start permanent magnet synchronous motor（LSPMSM）
cogging torque
finite element analysis
magnet shifting
