Title :
Effect of air gap between PM segments on cogging torque and acoustic noise of BLDC motor
Author :
Song, J. ; Sung, S. ; Jang, G.
Author_Institution :
Dept. of Mech. Convergence Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This research investigates numerically the characteristics of the cogging torque in a brushless DC (BLDC) motor caused by the air gap between permanent magnet (PM) segments, and proposes a design method to reduce the effect of the air gap between PM segments on the cogging torque and acoustic noise of a BLDC motor. A 3D finite element model is used to calculate the cogging torque while a microphone is used to measure the acoustic noise and overall sound pressure level of the BLDC motor.
Keywords :
acoustic noise; air gaps; brushless DC motors; finite element analysis; permanent magnet motors; 3D finite element model; BLDC motor; acoustic noise; air gap; brushless DC motor; cogging torque; microphone; overall sound pressure level; permanent magnet segments; Acoustic noise; Brushless motors; Forging; Harmonic analysis; Noise measurement; Reluctance motors; Torque;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157401
