Title :
Research of cogging torque in the brushless DC motor with fractional ratio of slots and poles
Author :
Xin, Ge ; Guangxian, Han ; Zhi, Cheng ; Zongpei, Wang
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Abstract :
In this paper, the simplified model for analyzing permanent-magnet motor with fractional ratio of slots and poles is presented, by which the principle of removing cogging torque is explained clearly. And the influence on cogging torque caused by non-uniform of rotor permanent-magnet can be analyzed by this model. The influence caused by amplitude and position errors of permanent-magnet magnetic motive force is analyzed in detail, which is confirmed by experiment examples.
Keywords :
brushless DC motors; permanent magnet motors; rotors; torque; brushless DC motor; cogging torque; fractional ratio; permanent-magnet magnetic motive force; permanent-magnet motor; poles; rotor; slots; Brushless DC motors; Brushless motors; Forging; Magnetic analysis; Magnetic flux; Saturation magnetization; Servomotors; Stators; Teeth; Torque;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202488
