基于d-q轴电流控制的无轴承电机径向位置控制方法

S. Kobayashi, M. Ooshima, M. Uddin
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引用次数: 34

摘要

提出了一种基于d-q轴电流控制和一体化绕组布置的无轴承电机径向位置控制方法。BELM具有电机和磁轴承的功能。转子通过悬浮力实现非接触悬浮。在传统的BELM中,有两种定子绕组,即电机绕组和悬架绕组。电机绕组输出旋转力矩,悬挂绕组输出悬挂力。为了简化传统BELM的结构,本文提出了两绕组集成的方法。通过对绕组的集成,简化了BELM的结构,增加了扭矩和力的产生。轴定子电流控制悬架力,q轴电流控制电机的输出转矩。在机器槽数较少的情况下,实际的悬挂力不能跟随指令。为了使实际悬架力服从命令,本文还提出了一种补偿方法。利用有限元分析软件对所提出的基于径向位置控制的集成卷绕式带臂机进行了仿真研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A radial position control method of bearingless motor based on d-q axis current control
This paper presents a radial position control method of bearingless motor (BELM) based on d-q axis current control and an integrated winding arrangement. The BELM performs the functions of motor as well as magnetic bearing. Rotor is suspended with non-contact by suspension force. In a conventional BELM, there are two kinds of stator windings such as motor and suspension windings. The motor winding outputs the rotational torque, and the suspension winding outputs the suspension force. To simplify the structure of conventional BELM, integration of two windings is proposed in this paper. By integrating the windings, the structure of BELM becomes simple and also the torque and force productions are increased. The daxis stator current controls suspension force and the q-axis current controls the developed torque of the motor. In the case when there is less number of slots in the machine, the actual suspension force cannot follow the command. In order to make the actual suspension force to follow the command a compensation method in also proposed in this paper. A simulation study is done for the proposed radial position control based integrated winding BELM using finite element analysis software.
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