Optimization of rotor shape for constant torque characteristic of IPM motor

Author

Cho, Gyu Won ; Woo, Seok Hyeon ; Ji, Seung Hun ; Jang, Ki Bong ; Kim, Gyu Tak

Author_Institution

Dept. of Electr. Eng., Changwon Nat. Univ., Changwon, South Korea

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

This paper deals with optimal design of notch and flux barrier in order to improve the characteristics of constant torque while minimizing the cogging torque. The position and width of the notch was calculated using the Fast Fourier Transform. The optimized model using the notch and barrier demonstrated a 60% decrease in the cogging torque, a 75.3% decrease in the torque ripple, and a 3% increase in the operating torque when compared with the basic model. Thus, the operating characteristics were significantly improved.

Keywords

fast Fourier transforms; machine theory; permanent magnet motors; rotors; synchronous motors; torque; IPM motor; cogging torque; constant torque characteristic; fast Fourier transform; flux barrier; interior permanent magnet synchronous motor; notch position; notch width; optimal design; rotor shape optimization; Analytical models; Atmospheric modeling; Forging; Permanent magnet motors; Permanent magnets; Rotors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073663

Filename

6073663