High-Speed Coreless Axial-Flux Permanent-Magnet Motor With Printed Circuit Board Winding
High-Speed Coreless Axial-Flux Permanent-Magnet Motor With Printed Circuit Board Winding
复制标题
采用印刷电路板绕组的高速空心杯轴向磁通永磁电机
DOI：
10.1109/tia.2018.2872155
复制
发表时间：
2019
影响因子：
4.4
通讯作者：
B. G. Fernandes
中科院分区：
文献类型：
--
作者：
N. S;S. Nikam;Sumeet Singh;Saumitra Pal;A. K. Wankhede;B. G. Fernandes
高速（10000 r/min以上）运行的无齿轮和紧凑型电机越来越多地用于许多领域。本文提出了一种无铁心轴向磁通永磁电机的设计和分析，高速，低功耗的应用。建议的电机设计为以30 000 r/min的速度旋转。为了确保电机在高速下的可靠性，必须最大限度地减少转矩涟漪和定子与转子之间在轴向方向上的磁吸引。因此，在本文中，一种新的无铁心定子设计使用多层印刷电路板（PCB）的建议。PCB定子确保相绕组的均匀分布，从而最大限度地减少电机反电动势中的谐波。多层PCB定子使电机高度紧凑、高效和可靠。为了提高无铁心设计中的气隙磁通密度，使用了基于Halbach阵列的轻质转子，并且Halbach磁体覆盖有高强度的磁性材料，以实现高转子完整性。采用MagNet 3-D和COMSOL Multiphysics软件对电机进行了有限元分析和优化，并给出了仿真结果。制作了一台电机样机，并采用无位置传感器磁场定向控制进行了测试，验证了仿真结果。为原型获得的反电动势是正弦的，其性能特性确保在高速下的高效和可靠的性能。
Gearless and compact motors operating at high speeds (above 10 000 r/min) are increasingly being used in many fields. This paper presents the design and analysis of a coreless axial-flux permanent-magnet motor for high-speed, low-power applications. The proposed motor is designed to rotate at a speed of 30 000 r/min. To ensure the reliability of the motor at high speeds, it is essential to minimize torque ripple and the magnetic attraction between the stator and the rotor in the axial direction. Therefore, in this paper, a novel coreless stator design using multilayer printed circuit board (PCB) is proposed. The PCB stator ensures uniform distribution of the phase windings, which minimizes harmonics in the back EMF of the motor. The multilayer PCB stator makes the motor highly compact, efficient, and reliable. To improve the air-gap flux density in the coreless design, a lightweight Halbach-array based rotor is used and the Halbach magnets are covered with a high-strength nonmagnetic material to achieve high rotor integrity. MagNet 3-D and COMSOL Multiphysics are used for the finite element analysis and optimization of the motor and the simulation results are presented. A prototype of the motor is fabricated and tested with sensorless field oriented control to validate the simulation results. The back EMF obtained for the prototype is sinusoidal and its performance characteristics ensure efficient and reliable performance at high speeds.