Simple Driving Method for a Two-DOF Controlled Bearingless Motor Using One Three-Phase Inverter
Simple Driving Method for a Two-DOF Controlled Bearingless Motor Using One Three-Phase Inverter
复制标题
使用一台三相逆变器的二自由度控制无轴承电机的简单驱动方法
DOI：
10.1109/icelmach.2016.7732890
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and A. Chiba
中科院分区：
文献类型：
--
作者：
J. Asama;T. Oi;T. Oiwa;and A. Chiba
在本文中，我们提出了一种简单的驱动方法，只用一个三相逆变器就可以控制两自由度无轴承电机。该电机采用六槽六极结构，包括单相六极电机的两个分离绕组和三相四极悬挂的两个独立绕组。定子铁心具有交错齿结构，以产生启动扭矩。单相电机绕组连接在三相悬浮绕组的中性点和直流电源的中点之间。对径向悬浮力进行了解析计算，并用有限元方法进行了验证。此外，还介绍了悬浮力的纹波补偿方法。建立了一台两自由度主动悬架无轴承永磁电机样机，并进行了实验研究。实验结果表明，只需一台三相逆变器，即可使转速高达8000r/min的转子成功悬浮。
In this paper, we propose a simple driving method that uses only one three-phase inverter for an actively controlled 2-DOF bearingless motor. This motor has a six-slot/six-pole structure, including two separated windings for the single-phase six-pole motor and the three-phase four-pole suspension. The stator core has a staggered-tooth structure to produce starting torque. The single-phase motor winding is connected between the neutral point of the three-phase suspension winding and the midpoint of the dc power sources. The radial suspension force is calculated analytically and verified using the finite-element method. In addition, we introduce a ripple compensation method for the suspension force. A prototype of a bearingless permanent magnet motor with 2-DOF active suspension was built and tested. The results of experiments demonstrated that the rotor, which was driven at speeds up to 8000 r/min, could be levitated successfully, using only one three-phase inverter.