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Received: 2007-03-02

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.8 P.1311-1319

http://doi.org/10.1631/jzus.2007.A1311


Analysis of a new 5-phase bearingless induction motor


Author(s):  HUANG Jin, KANG Min, YANG Jia-qiang

Affiliation(s):  School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   yjq1998@163.com

Key Words:  Air-gap-flux-oriented control, Bearingless motor, Multiphase, Radial force, Single set of windings, Modified winding function method


HUANG Jin, KANG Min, YANG Jia-qiang. Analysis of a new 5-phase bearingless induction motor[J]. Journal of Zhejiang University Science A, 2007, 8(8): 1311-1319.

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author="HUANG Jin, KANG Min, YANG Jia-qiang",
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%DOI 10.1631/jzus.2007.A1311

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T1 - Analysis of a new 5-phase bearingless induction motor
A1 - HUANG Jin
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A1 - YANG Jia-qiang
J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.A1311


Abstract: 
This paper addresses the bearingless motor with a single set of multiphase windings. The interaction between M and M±1 pole-pair magnetic fields produces radial force. Based on this principle, a bearingless machine is obtained. Conventional bearingless machine has dual windings, levitation windings and torque windings, which produce the two magnetic fields. In the proposed bearingless motor, the two needed magnetic fields are produced by feeding two groups of currents to a single set of multiphase windings. Taking a 5-phase induction motor as example, the inductance matrices, considering air gap eccentricity, are calculated with the modified winding function method. The radial force analytical model is deduced by virtual displacement, and its results are validated by FEA. The mathematical model of the new bearingless machine is set up, and the simulation results verified the feasibility of this novel bearingless motor.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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