基于Maxwell压铸机用永磁同步电动机优化分析

Optimal Analysis of Permanent Magnetic Synchronous Motor for Die Casting Machine Based on Maxwell

为使压铸机用永磁同步电动机能够平稳运行,根据永磁同步电动机产生齿槽转矩机理进行分析,本文采用磁极偏移的方法来降低该款电动机的齿槽转矩。基于Maxwell 2D建立该电机有限元模型,对磁极偏移角度进行扫描,得到最佳的偏移角度。仿真结果表明,磁极偏移合适的角度可以有效削弱电机的齿槽转矩。最后试制了样机,进行了相关性能测试,仿真与样机试验结果对比得出,各项性能指标误差均在5%以内,电机的输出转矩平稳,该文在理论和工程实践上都有较高参考价值。

In order to make a permanent magnet synchronous motor for die casting machine can run smoothly, according to the mechanism of permanent magnet synchronous motor＇s cogging torque, the method of magnetic pole shifts was adopted to reduce the cogging torque of the motor. Based on Maxwell 2D, finite element model of the motor was established, and the pole shift angle was scanned to get the best offset angle. The simulation results show that the pole shift right angle can effectively reduce the cogging torque of the motor. Finally, a prototype was developed and tested. The eomparsion of the simulation values and prototype test results indicates that the performance indexes of errors are within 5%, the output torque of the motor is smoothly. This paper has a high reference value in theory and engineering practice.