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Patent Searching and Data


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 (CN)
XUE SONGHAN (CN)
PAN ZHENBAO (CN)
YANG HUI (CN)
PENG FEI (CN)
LIN HEYUN (CN)
Application Number:
PCT/CN2018/088139
Publication Date:
August 29, 2019
Filing Date:
May 24, 2018
Export Citation:
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Assignee:
UNIV SOUTHEAST (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) (CN)
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