Title :
A Study on the Novel Coefficient Modeling for a Skewed Permanent Magnet and Overhang Structure for Optimal Design of Brushless DC Motor
Author :
Hwang, Kyu-yun ; Lin, Hai ; Rhyu, Se-Hyun ; Kwon, Byung-Il
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Ansan, South Korea
fDate :
5/1/2012 12:00:00 AM
Abstract :
A novel coefficient modeling technique, using a coefficient estimation method, is introduced for a brushless DC (BLDC) motor with a skewed permanent magnet and overhang structure. To construct the novel coefficient, the 3-D FEM and a design of experiment (DOE) are utilized along with the moving least square method (MLSM). Also, to verify the accuracy of the novel coefficient modeling, the conventional coefficient modeling using LSM is constructed and compared. Then the novel coefficient is combined with an approximate model constructed by 2-D FEM for use with an optimal design algorithm. For the searching process to obtain an optimal point, the genetic algorithm (GA) is used. Three-dimensional FEM simulation is used to verify the accuracy of the novel coefficient for the optimal design.
Keywords :
brushless DC motors; design of experiments; finite element analysis; genetic algorithms; least squares approximations; permanent magnet motors; 3D FEM; brushless DC motor; coefficient estimation method; coefficient modeling technique; design of experiment; genetic algorithm; moving least square method; optimal design algorithm; overhang structure; skewed permanent magnet; Finite element methods; Forging; Least squares approximation; Magnetic circuits; Solid modeling; Three dimensional displays; Torque; BLDC motor; cogging torque; finite element method; optimization; overhang structure;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2176135