摘要
为了提供高速电主轴的功率密度及动态性能,采用永磁电动机方案。比较了不同的线圈匝数、铁心长度、气隙长度、永磁体厚度、宽度等参数下电机的效率、功率密度、输入电流等主要指标。采用有限元方法分析了该种电机设计的合理性及性能指标,为电机的优化设计打好基础。针对永磁体与有槽铁心相互作用产生齿槽转矩而引起振动和噪声,采用优化槽口方案,削弱齿槽转矩。结果表明,通过优化后电机结构方案与原方案相比,显著削弱了齿槽转矩和转矩波动。
Permanent magnet motor was adopted to improve the power density and dynamic performance for high-speed spindle.Efficiency,power density,input current of the motor were calculated as main indexes with different the number of winding turns,core length,air gap length,permanent magnet thickness and width.Using the finite element method,the performance and the reasonableness of the motor design were analyzed to lay the foundation for optimal design of the motor.According to the interaction between the permanent magnet and slotted armature lamination produces cogging torque,which may cause noise and vibration,the optimize notch was adopted to reduce the cogging torque.The results show that this method can significantly reduce cogging torque and torque ripple.
出处
《微特电机》
北大核心
2014年第9期1-3,6,共4页
Small & Special Electrical Machines
基金
宁波市自然科学基金项目(2012A610075
2013A610153)
关键词
电主轴
永磁电动机
参数化设计
有限元分析
spindle
permanent magnet motor
parametric design
finite-element analysis
