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ÖÐͼ·ÖÀàºÅ£ºTM351 ÎÄÏ×±êÖ¾Â룺A doi£º10.3969/j.issn.1006-0316.2022.07.001

ÎÄÕ±àºÅ£º1006-0316 (2022) 07-0001-07

Magnetic Saturation Control and Electromagnetic Performance Optimization of Permanent Magnet AC Torque Motors

WANG Qian1£¬DU Aoxiang1£¬WEI Guo2£¬YUE Tong2£¬LI Yong1

( 1.School of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China; 2.Norla Institute of Technical Physics, Chengdu 610041, China )

Abstract£ºThis paper analyzes the influence of magnetic circuit saturation on torque-current characteristic curve of permanent magnet AC torque motors. By optimizations of stator tooth width and the shape and pole arc coefficient of permanent magnet, the magnetic saturation of the motor is controlled, and the electromagnetic performance is enhanced, thus revealing the mechanism between the magnetic circuit structures/parameters and the electromagnetic performance as well as magnetic saturation. It shows that the linearity of torque-current characteristic is closely related to the magnetic circuit saturation degree. By optimizing the stator tooth width, the magnetic saturation can be effectively controlled, and the torque output capacity can be improved. By employing rectangular magnets, the motor performance can be enhanced, and the motor manufacturing cost can be greatly reduced at the same time. Moreover, there is an optimal value of the pole arc coefficient for the comprehensive optimization of various indexes of the motor.

Key words£ºpermanent magnet AC torque motor£»magnetic saturation£»electromagnetic performance

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