Title :
Topology and preliminary design of slotless brushless DC motor
Author :
Chen, Yongxiao ; Shen, Jianxin ; Fang, Zemin
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A brushless DC motor with cup-shaped windings fixed on the cylindrical iron core without using slots, so-called slotless brushless DC (SLBLDC) motor, can reduce the cogging torque to negligible value. This paper describes the preliminary design of a sinusoidally fed SLBLDC motor, including the geometry of winding and magnets, a novel approach to calculating the major dimension and the airgap flux density based method (AFDBM) for determining each dimension of the motor structure and especially optimizing the magnets
Keywords :
air gaps; brushless DC motors; machine theory; machine windings; magnetic cores; magnetic flux; permanent magnet motors; torque; airgap flux density based method; cogging torque reduction; cup-shaped windings; cylindrical iron core; magnet geometry; magnets optimisation; motor structure; sinusoidally fed motor; slotless brushless DC motor; winding geometry; Brushless DC motors; Brushless motors; DC motors; Forging; Geometry; Iron; Magnetic cores; Magnets; Topology; Torque;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604311
