Affiliation of Author(s):自动化学院
Journal:Dianji yu Kongzhi Xuebao
Abstract:To improve performance of bearingless consequent-pole permanent magnet motors, by analyzing the influence of consequent-pole rotor and winding configuration on no-load back-EMF and cogging torque, a centrifugal magnet pole shape optimization method was proposed. The optimization method can increase sinusoidal degree of back-EMF, lower cogging torque and suppress torque ripple when comparing no-load and on-load performance before and after shape optimization. However, it can simultaneously lead to losses of average torque and average suspension force. To overcome these disadvantages, one method was presented by increasing rotor outer diameter and decreasing air-gap length. Finally, finite element analysis was carried out for verification of effectiveness for the proposed method. The results show that the torque constant increases from 0.155 N·m/A to 0.181 N·m/A, the peak-to-peak torque ripple decreases from 30.4% to 12.1%. Additionally, rated suspension force increases from 14.6 N to 23 N, the peak-to-peak suspension force ripple decreases from 8% to 7.8% and maximum radial coupling increases from 7% to 7.7%. © 2017, Harbin University of Science and Technology Publication. All right reserved.
ISSN No.:1007-449X
Translation or Not:no
Date of Publication:2017-01-01
Co-author:Ding, Qiang,wxl
Correspondence Author:deng zhiquan
Date of Publication:2017-01-01