关键词: 外转子轮毂电机, 内置式永磁游标电机, BP 神经网络, 带精英策略的快速非支配排序遗传算法, 电磁场有限元

Abstract: The outer rotor embedded permanent magnet vernier motor adopts the principle of magnetic modulation. Due to its structure of embedded permanent magnet, it is easy to optimize and control the magnetic circuit, and has significant advantages in low speed and high torque. A configuration design of a trapezoidal interior permanent magnet vernier motor was conducted. In response to its complex structure, multiple electromagnetic parameters, and difficulty in balancing different performance indicators, the electromagnetic structural parameter were selected as the optimization objective. A BP neural network proxy model was established by using finite element calculation method, and the NSGA-Ⅱ intelligent optimization algorithm was used for multi-objective optimization, resulting in an optimization rate of over 10% for motor torque and iron core loss, which verified the effectiveness of the multi objective optimization on the interior permanent magnet vernier motor design.

Key words: outer rotor hub motor, interior permanent magnet vernier motor, back propagation( BP ) neural network, nondominated sorting genetic algorithm Ⅱ( NSGA-Ⅱ) intelligent algorithm, electromagnetic field finite element