Design and study of disc coreless motor with trapezoidal permanent magnet

被引：0
|
作者：
Xie Y. [1 ]
Qu C.-M. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2016年 / 20卷 / 08期
关键词：
Air gap flux density; Disc coreless motor; Finite element method(FEM); Halbach array; Trapezoidal permanent magnet;
D O I：
10.15938/j.emc.2016.08.010
中图分类号：
学科分类号：
摘要：
A trapezoidal permanent magnetic array is proposed based on the existing Halbach permanent magnetic array, aiming at the axial magnetic field of permanent magnetic disc coreless synchronous motor. The structure and advantages of the motor were shown. The influence of different trapezoidal permanent magnetic arrays on the air gap flux density was studied by finite element method. The optimal rotor structure was proposed according to the harmonic content in the air gap magnetic field and no-load back electromotive force (EMF) distortion rate. The fundamental was heightened and harmonic content was decreased in air gap flux density, with no change of permanent magnetic volume comparing with traditional structure. Considering the characteristic of axial magnetic field, such as ensuring of the parameters of magnetic poles and conductor duty cycle, the design rule of motor was provided. The influence of different stator currents on the d-q axis inductance was calculated under load condition, which offers reference value for the design of this kind of motor. © 2016, Harbin University of Science and Technology Publication. All right reserved.
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页码：74 / 82
页数：8
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