The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

An Optimal Design of Notch Shape of IPM BLDC Motor Using the Differential Evolution Strategy Algorithm

차분진화 알고리즘을 이용한 IPM형 BLDC전동기의 Notch 형상 최적화 설계 연구

  • Shin, Pan Seok (Dept. of Electrical Engineering, Hongik University) ;
  • Kim, Hong Uk (Dept. of Electrical Engineering, Hongik University)
  • Received : 2014.12.24
  • Accepted : 2016.01.06
  • Published : 2016.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a cogging torque of IPM(Interior Permanent Magnet)-type BLDC motor is analyzed by FE program and the optimized notch on the rotor surface is designed to minimize the torque ripple. A differential evolution strategy algorithm and a response surface method are employed to optimize the rotor notch. In order to verify the proposed algorithm, an IPM BLDC motor is used, which is 50 kW, 8 poles, 48 slots and 1200 rpm at the rated speed. Its characteristics of the motor is calculated by FE program and 4 design variables are set on the rotor notch. The initial shape of the notch is like a non-symmetric half-elliptic and it is optimized by the developed algorithm. The cogging torque of the final model is reduced to $1.5[N{\cdot}m]$ from $5.2[N{\cdot}m]$ of the initial, which is about 71 % reduction. Consequently, the proposed algorithm for the cogging torque reduction of IPM-type BLDC motor using the rotor notch design seems to be very useful to a mechanical design for reducing noise and vibration.

Keywords

References

  1. Hee-Jun Chung, "A Vibration Analysis for Large Scale BLDC Motor by Electromagnetic Exciting Force", Master's thesis of Hongik University, 2008.
  2. Han-deul Kim, Chul Kim, Pan Seok Shin, et. al., "A Magnetic Exciting Force Analysis of the Large Scale BLDC Motor", Proceedings of the KIEE EMECS Autumn Annual Conference 2005, pp. 83-85, 2005.
  3. Ho Youn Kim, "A Study on the Minimization of Torque Ripple for EV IPMSM using Rotor Notch", Master's thesis of Hongik University, 2012.
  4. P. S. Shin, S. H. Woo, C. S. Koh, "An Optimal Design of Large Scale Permanent Magnet Pole Shape Using Adaptive Response Surface Method With Latin Hypercube Sampling Strategy", IEEE Transactions on Magnetics, Vol. 45, no.3, pp. 1214-1217, March 2009. https://doi.org/10.1109/TMAG.2009.2012565
  5. Seok Bum Noh, et. al., "The Optimization of Fuzzy Prototype Classifier by using Differential Evolutionary Algorithm", Proceedings of KIIS Fall Conference 2013, Vol. 23, No. 2. pp. 187-188.
  6. Tae Seok Chung, et. al., "The Design of Radial Magnetic Force Equilibrium for Reduction of Vibration and Noise in IPM Type BLDC Motor",The Transactions of the Korean Institute of Electrical Engineers Vol. 62, No. 11, pp. 1535-1540, 2013. https://doi.org/10.5370/KIEE.2013.62.11.1535
  7. Gyu-Won Cho, and et. al., "The Optimization of Rotor Shape for Constant Torque Improvement and Radial Magnetic Force Minimization", The Transactions of KIEE, vol. 61, pp. 64-69, 2012.
  8. Nyambayar Baatar, "Modified Differential Evolution Algorithm for Single and Multiobjective Optimization Problems.", Doctoral Thesis, Chungbuk National University, pp. 44-86, 2014.