An ideal pole number combination of motor and suspension windings is essential for bearingless motors. In this study, the performance of a high-speed, high-power buried permanent magnet bearingless motor using several pole combinations is compared. The torque, power factor, efficiency, suspension force amplitude and fluctuation, and eddy current loss are compared for a 37000 r/min bearingless motor with an output of 60 kW. The basic experimental results of the test bearingless motor with the optimum pole number combination are presented. The test machine has an output of 61.9 kW with an efficiency of 94.9% at a speed of 37000 r/min and a static radial force of 530 N. The radial force and torque density are as high as 1.01 kgf/cm ² and 64 Nm/L, respectively. The output of 61.9 kW is the highest experimentally obtained for bearingless motors.

中文翻译：

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埋入式永磁无轴承电动机的最佳极数组合和输出功率为60 kW，速度为37000 r / min时的测试结果

电动机和悬架绕组的理想极数组合对于无轴承电动机至关重要。在这项研究中，比较了使用几种极组合的高速，大功率埋入式永磁无轴承电动机的性能。比较了输出功率为60 kW的37000 r / min无轴承电动机的扭矩，功率因数，效率，悬架力振幅和波动以及涡流损耗。给出了具有最佳极数组合的无轴承电动机的基本实验结果。该试验机在37000 r / min的速度下输出61.9 kW的功率，效率为94.9％，静态径向力为530N。径向力和扭矩密度高达1.01 kgf / cm ²和64 Nm / L。实验得出的无轴承电动机的最高输出为61.9 kW。