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http://dx.doi.org/10.5370/KIEE.2016.65.2.279

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

Shin, Pan Seok (Dept. of Electrical Engineering, Hongik University)
Kim, Hong Uk (Dept. of Electrical Engineering, Hongik University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.65, no.2, 2016 , pp. 279-285 More about this Journal
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
BLDC motor; Notch design; Cogging torque; Differential evolution strategy; IPMSM; Optimization technique;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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