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Title:
HALBACH CYLINDRICAL ARC PERMANENT-MAGNET MOTOR FOR LARGE-SIZE ASTRONOMICAL TELESCOPE
Document Type and Number:
WIPO Patent Application WO/2019/161625
Kind Code:
A1
Abstract:
Disclosed in the present invention is a Halbach cylindrical arc permanent-magnet motor for a large-size astronomical telescope. The motor is in an annular shape and comprises three rotors (1) and a stator (2). The three rotors (1) are located at the periphery of the annular stator (2); each rotor (1) is cylindrical and comprises armature windings (1.1), armature iron core teeth (1.2), and a rotor yoke (1.3); the armature iron core teeth (1.2) are disposed at the inner circle of the rotor yoke (1.3) to form half-closed pear-shaped recesses (3); the armature windings (1.1) are placed in the half-closed pear-shaped recesses (3); the stator (2) comprises a stator iron core (2.1) and an Halbach permanent-magnet annular array (2.2) surface-mounted on the stator iron core. Use of the Halbach permanent-magnet annular array (2.32) can effectively improve the sinusoidal property of air-gap magnetic flux while the electromagnetic performance of the motor is not affected and reduce the torque ripple; according to the motor, the space is fully utilized, and the power density is improved; the magnetic field intensity of a single side can be substantially improved, the sinusoidal property of the air-gap magnetic flux density is improved, and high-precision servo control of the motor is facilitated.

Inventors:
FANG, Shuhua (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
XUE, Songhan (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
PAN, Zhenbao (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
YANG, Hui (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
PENG, Fei (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
LIN, Heyun (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
Application Number:
CN2018/088139
Publication Date:
August 29, 2019
Filing Date:
May 24, 2018
Export Citation:
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Assignee:
SOUTHEAST UNIVERSITY (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
International Classes:
H02K16/02; H02K29/03
Foreign References:
CN104852537A2015-08-19
CN103661085A2014-03-26
JP2011252989A2011-12-15
Other References:
HU , WEI ET AL.: "Design and Implementation of Servo Control System of the Large Aperture Telescope Based on DSP", MICROMOTORS, vol. 43, no. 8, 28 August 2010 (2010-08-28), pages 38 - 40, ISSN: 1001-6848
WANG, HAITAO ET AL.: "A New Halbach Arc Permanent Magnet Synchronous Motor With Three-Dimensions Air Gap Used on Large Telescop e", 2015 IEEE INTERNATIONAL CONFERENCE ON APPLIED SUPERCONDUCTIVITY AND ELECTROMAGNETIC DEVICES, 19 April 2016 (2016-04-19), pages 478 - 479, XP032892254
JIAN, CHANGJIU ET AL.: "New Methods for Arc Permanent Magnet Linear Synchronous Motor to Decrease Torque Ripple", IEEE TRANSACTIONS ON MAGNETICS, vol. 48, no. 10, 31 October 2012 (2012-10-31), pages 2659 - 2663, XP011463548, doi:10.1109/TMAG.2012.2197404
Attorney, Agent or Firm:
NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (Room 411, Building 3 No. 155 Long Pan Road, Xuanwu Distric, Nanjing Jiangsu 0, 210000, CN)
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