To address the issue of a single output port in traditional motors, a novel multi-port disc-type permanent magnet motor (MDPMM) was proposed. First, the structure and working principle of this motor is introduced. Second, the impact of the positioning force of the ring-arc stator on thrust was analyzed and calculated. Due to the numerous electromagnetic structural parameters affecting the positioning force, a generalized regression neural network (GRNN) was designd to establish a rapid calculation model for the MDPMM. By constructing a finite element model of the ring-arc stator region, a parameter sample library was obtained as input for the GRNN. The superiority of GRNN is verified by comparing it with support vector machines (SVM). With the optimization objective of "no reduction of thrust density and minimum fluctuation of thrust" , the particle swarm optimization(PSO)algorithm is used to optimize the structural parameters of the ring-arc stator region. Finally, the effectiveness of the hybrid GRNN-PSO algorithm is validated through comparative simulation analysis before and after optimization.
本文结合行星永磁电机多端口的能量转换,提出一种新型多端口盘式永磁电机(Multi-port disk permanent magnet motor,MDPMM),该电机既继承了轴向磁通电机的许多优点,又融合了行星轮磁齿驱动的特点,可以实现直接驱动和多自由度功率输出。同时,针对MDPMM环形弧线定子定位力在带载时对推力的影响,提出采用混合GRNN-PSO全局优化环形弧线定子对应盘式转子区域模型参数。首先,介绍该新型电机的结构及工作原理,分析研究其端部力和齿槽力,以减小其定位力;其次,为了实现对MDPMM环形弧线定子对应盘式转子区域模型参数的全局优化,通过GRNN逐层学习来建立高效、高精度的环形弧线定子对应盘式转子区域快速计算模型;最后,利用PSO对GRNN生成的快速计算模型参数进行全局优化,得到MDPMM环形弧线定子对应盘式转子区域模型各结构参数,并进行有限元验证。
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