Affiliations: [a] College of Mechanical and Electronic Engineering,
China University of Petroleum, Qingdao, Shandong, China
Correspondence:
[*]
Corresponding author: Wensheng Xiao, College of Mechanical and
Electronic Engineering, China University of Petroleum, Qingdao 266580,
Shandong, China. Tel.: +86 532 8698 3301; Fax: +86 532 8698 3300; E-mail: xiaows@upc.edu.cn
Abstract: Efficiency and torque ripple are usually especially concerned during
the working process of permanent magnet synchronous motor (PMSM). The loss and
cogging torque generated during the working process of PMSM are analyzed. A
low-speed surface-mounted PMSM used for direct-drive pumping unit is optimized.
For increasing efficiency and reducing cogging torque, Taguchi's method is
employed and height of stator yoke, width of stator tooth, thickness of
permanent magnet, and air-gap length are selected as the variables. The
orthogonal experiment is conducted with FEM. The mean of the results and the
two-order interaction effects between the selected variables are analyzed, then
the best optimization combination is determined by the analysis of variance.
The results show that Taguchi's method is an efficient and effective approach,
which is finally proved by the prototype test.
