A high torque, wide air gap bearingless motor with permanent magnet free rotor
A high torque, wide air gap bearingless motor with permanent magnet free rotor
复制标题
具有永磁无转子的高扭矩、宽气隙无轴承电机
DOI：
10.1109/iemdc.2017.8002310
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Kolar
中科院分区：
文献类型：
--
作者：
Thomas Holenstein;Jonas Greiner;D. Steinert;J. Kolar
本文介绍了一种无磁铁转子的无轴承电机拓扑结构，与以前发表的拓扑结构相比，它可以实现更高的转子转矩密度和更宽的气隙。气隙中的磁通密度，从而最大限度地提高了转矩能力，定子在寺庙的配置，提供了大的绕组空间。低数量的8个定子和6个转子齿保持低杂散磁通，这使得更大的气隙比同时。低齿数的一个挑战是大角度相关的力和扭矩非线性，在控制算法中进行了补偿。建立了三维有限元优化样机并投入运行。通过对运行系统的测量，验证了所引入的拓扑结构的可行性。
This paper introduces a bearingless motor topology with a magnet free rotor, which enables higher rotor torque densities and wider air gap compared to previously published topologies. Flux density in the air gap and therefore torque capability is maximized by a stator in temple configuration, which provides large winding space. The low number of eight stator and six rotor teeth keeps stray flux low, which enables wider air gap ratios at the same time. A challenge of having a low teeth number are large angle dependent force and torque nonlinearities, which are compensated in the control algorithm. A 3D FEM optimized prototype was constructed and put into operation. Measurements of the running system are presented to confirm the feasibility of the introduced topology.