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Optimum Design of Stator and Rotor Shape for Cogging Torque Reduction in Interior Permanent Magnet Synchronous Motors

  • Yu, Ju-Seong (Dept. of Electrical Engineering, Chungnam National University) ;
  • Cho, Han-Wook (Dept. of Electric, Electronic & Communication Eng. Edu., Chungnam National University) ;
  • Choi, Jang-Young (Dept. of Electrical Engineering, Chungnam National University) ;
  • Jang, Seok-Myeong (Dept. of Electrical Engineering, Chungnam National University) ;
  • Lee, Sung-Ho (Korea Institute of Industrial Technology (KITECH))
  • Received : 2013.01.29
  • Published : 2013.07.20

Abstract

This paper deals with the optimum design of the stator and rotor shape of the interior permanent magnet synchronous motors (IPMSM) that are used in applications for automobiles. IPMSMs have the following advantages: high power, high torque, high efficiency, etc. However, cogging torque which causes noise and vibrations is generated at the same time. The optimum design of shape of a IPMSM was carried out with the aim of reducing cogging torque. Six variables which affect to the performance of a IPMSM are chosen. The main effect variables were determined and applied to the response surface methodology (RSM). When compared to the initial model using the finite elements method (FEM), the optimum model highly reduces the cogging torque and improves the total harmonics distortion (THD) of the back-electro motive force (EMF). A prototype of the designed model was manufactured and experimented on to verify the feasibility of the IPMSM.

Acknowledgement

Supported by : Chungnam National University

References

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