Title :
Rotor Pole Design in Spoke-Type Brushless DC Motor by Response Surface Method
Author :
Hwang, Kyu-yun ; Rhee, Sang-Bong ; Yang, Byoung-yull ; Kwon, Byung-Il
Author_Institution :
Hanyang Univ., Ansan
fDate :
4/1/2007 12:00:00 AM
Abstract :
This paper proposes a novel rotor pole shape which consists of a uniform surface and an eccentric surface to make a sinusoidal magnetic flux density in air gap in order to reduce cogging torque, torque ripple, and harmonics of back-electromotive force waveform in spoke-type brushless DC motor. In the process of design and analysis, response surface methodology and the 2-D finite-element method are employed to obtain the rotor geometry and verify the results of the novel rotor pole shape
Keywords :
air gaps; brushless DC motors; design engineering; finite element analysis; response surface methodology; rotors; torque; 2D finite element method; air gaps; back electromotive force waveform harmonics; cogging torque reduction; eccentric surface; response surface methodology; rotor geometry; rotor pole design; sinusoidal magnetic flux density; spoke-type brushless DC motors; torque ripple; Brushless DC motors; Forging; Magnetic analysis; Magnetic flux density; Process design; Response surface methodology; Rotors; Shape; Surface waves; Torque; Brushless DC (BLDC) motor; cogging torque; finite-element method; response surface method; torque ripple;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892616
