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Title:
CYLINDRICAL ARC PERMANENT MAGNET MOTOR FOR USE IN LARGE-CALIBER ASTRONOMICAL TELESCOPE
Document Type and Number:
WIPO Patent Application WO/2019/161623
Kind Code:
A1
Abstract:
The present invention relates to a cylindrical arc permanent magnet motor for use in a large-caliber astronomical telescope. The cylindrical arc permanent magnet motor comprises a rotor part (I) and a stator part (II), the rotor part (I) being sleeved on the outer surface of the stator part (II). The rotor part consists of three cylindrical rotor modules, each cylindrical rotor module is constituted by a cylindrical rotor iron core and a cylindrical armature winding (4), and the cylindrical armature winding (4) is arranged in a groove at the inner circumference of the corresponding cylindrical rotor iron core, where the cylindrical rotor iron cores comprise rotor back yokes (1), rotor teeth (2), rotor grooves (3), and, the rotor teeth and the rotor grooves are arranged on inner hole walls of the rotor back yokes. The stator part is constituted by a stator iron core (5) and an alternating polarity permanent magnet array (6) affixed to the exterior of the stator iron core. The present invention allows the pitch axis of the telescope to freely rotate within a 180° range; secondly, the annular armature windings increase the area of air gaps, thus increasing the torque density and torque stability of the motor.

Inventors:
FANG, Shuhua (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)
XUE, Songhan (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)
LIN, Heyun (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
WANG, Haitao (No. 2, Southeast University Road Jiangning Distric, Nanjing Jiangsu 9, 211189, CN)
Application Number:
CN2018/088137
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
CHANG, JIUJIAN ET AL.: "New Methods for Arc Permanent Magnet Linear Synchronous Motor to Decrease Torque Ripple", IEEE TRANSACTIONS ON MAGNETIC, 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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