Development of a Compact Centrifugal Pump With a Two-Axis Actively Positioned Consequent-Pole Bearingless Motor
Development of a Compact Centrifugal Pump With a Two-Axis Actively Positioned Consequent-Pole Bearingless Motor
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DOI：
10.1109/tia.2013.2270452
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发表时间：
2014-01-01
影响因子：
4.4
通讯作者：
Chiba, Akira
中科院分区：
文献类型：
--
作者：
Asama, Junichi;Kanehara, Daisuke;Chiba, Akira
研制了一种新型无轴承电机双轴径向主动定位离心泵。这种电机的结构是一个混合的后果极和单极型无轴承电机的延伸。基于三维有限元分析，研究了永磁体尺寸和电机电流对磁悬浮特性的影响。该电机的被动刚度得到了提高。制造试验泵，发现其在1.5m的水头压力下，以4L/min的流速提供1 W的最大泵输出。具有护罩的叶轮有助于显著减少由轴向推力引起的轴向叶轮运动。转子振动明显小于泵壳中的流体间隙。实验结果表明，所提出的对极无轴承电机用于离心泵是可行的和有效的。
A novel centrifugal pump has been developed that employs a bearingless motor with two-axis radial active positioning control. The structure of this motor is an extension of a hybrid of consequent-pole and homopolar-type bearingless motors. Based on 3-D finite-element-method analysis, the influence of the permanent-magnet dimension and motor current on magnetic suspension characteristics has been investigated. The passive stiffness of this motor has been enhanced. The test pump was fabricated and found to provide a maximum pump output of 1 W with a flow rate of 4 L/min against a head pressure of water of 1.5 m. An impeller with a shroud contributes to a significant reduction in axial impeller movement caused by axial thrust. The rotor vibration is significantly smaller than the fluid gaps in the pump casing. The experimental results demonstrate that the proposed consequent-pole bearingless motor is feasible and effective for use with a centrifugal pump.