基于分层优化的异步电动机多目标优化设计

Optimization Design of Multi-Object Hierarchical Optimization of Asynchronous Motor

引入分层优化的方法对电动机进行多目标优化设计。先从局部进行优化设计,将传统异步电动机中的单层绕组改造成单、双层绕组,并分析其对气隙磁场的影响;然后,选取电动机的定子内、外径之比、每槽导体数、定子和转子槽宽为变量,结合正交试验法和Ansys Maxwell有限元软件对三相异步电动机整体进行多目标优化设计。仿真结果表明,与优化前相比,优化后电动机的效率和功率因数都得到了一定提升。

A method of hierarchical optimization is used to optimize the motor.From the local optimization design,single layer winding of a traditional three-phase asynchronous motor is converted into single double-layer winding.Its effect on the air-gap magnetic field is analyzed.The ratio between the inner and outer diameters of the motor stator,the number of each slot conductor,and widths of the stator and the rotor slot are selected as variables.Combining with an orthogonal test method and the Ansys Maxwell finite element software,optimization design of the three-phase asynchronous motor is carried out.Simulation results show that efficiency and the power factor of the motor are improved as compared with the pre-optimized motor.