Title :
Study of the number of slots/pole combinations for low speed high torque permanent magnet synchronous motors
Author :
Shi, Jia ; Chai, Feng ; Li, Xing ; Cheng, Shukang
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
The paper evaluated the main performances of the low-speed, high-torque and direct-drive permanent magnet synchronous motor provided with fractional, slot concentrated windings. The finite element method is used to study the influence of the slots/pole combinations on the air gap flux density, the cogging torque and efficiency. The design principles of choosing slots/pole combination and motor structure for low-speed high-torque permanent magnet motor were given. A optimal slots/pole combination and motor design results of a low speed, high torque and direct drive permanent magnet synchronous motor(400W/45rpm/90N·m) were also raised.
Keywords :
finite element analysis; machine insulation; machine theory; machine windings; permanent magnet motors; synchronous motor drives; torque motors; air gap flux density; cogging torque; direct-drive motor; finite element method; fractional windings; high torque motors; low speed motors; permanent magnet synchronous motors; slot concentrated windings; slots/pole combinations; Copper; Forging; Permanent magnet motors; Permanent magnets; Synchronous motors; Torque; Windings;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073810
