极间隔断Halbach型磁钢的永磁同步电机多目标优化设计

摘要

In order to reduce the difficulty of processing and optimize the air-gap flux density, a surface mounted partition between poles Halbach magnet of permanent magnet synchronous motor is designed. The influence between the parameters of partition between poles Halbach magnet and the waveform of air-gap flux density is systematically analyzed. For the characteristics of these parameters have influence on both fundamental amplitude and total harmonic distortion of air-gap flux density, proposing a multi-objective optimization methods for parameters of this type of magnet. In order to require both relative maximum of fundamental amplitude and relative minimum of total harmonic distortion of air-gap flux density, a mixed global optimization algorithm is designed. On this basis, the way to choose the best parameters of partition between poles Halbach magnet is proposed. The correctness of the way to choose the result of optimization is verified, and the superiority of the partition between poles Halbach magnet is also verified further through FEA and experimentation respectively.%以降低加工难度与优化气隙磁通密度为目标,设计了表贴式极间隔断Halbach型磁钢的永磁同步电机,系统分析了极间隔断Halbach型磁钢参数对气隙磁通密度波形的影响.针对该类磁钢的参数,即磁钢极角和充磁夹角对基波幅值和正弦性畸变率都有影响的特点,提出了对磁钢参数进行多目标优化的方法,设计了以获得基波幅值极大值与正弦性畸变率极小值为多目标的混合全局优化算法,在此基础上,提出了最佳极间隔断Halbach型磁钢参数的选择方法.仿真与实验验证了优化结果选择方法的正确性,进一步验证了极间隔断Halbach型磁钢性能的优越性.