Title :
The Noise and Vibration Analysis of BLDC Motor Due to Asymmetrical Permanent-Magnet Overhang Effects
Author :
Kang, Gyu-Hong ; Son, Young-Dae ; Kim, Gyu-Tak
Author_Institution :
GEM-TECH Co., Ltd., Changwon
Abstract :
This paper relates to a vibration analysis of brushless dc (BLDC) motors using the asymmetrical Z-axis overhang of permanent magnet (PM). In BLDC motor, the asymmetrical Z-axis overhang of PM generates Z-axis thrust, which leads to Z-axis eccentric force by commutated current on the rated load and then the Z-axis vibration. The Z-axis thrust ripple, which is the source of Z-axis vibration under commutated current, is analyzed by using 3-D finite element method, and the phenomena of Z-axis vibration are analyzed by experimentation.
Keywords :
brushless DC motors; finite element analysis; machine testing; noise; permanent magnet motors; vibration control; 3D finite element method; BLDC motor; asymmetrical permanent-magnet overhang effects; brushless dc motors; commutated current; vibration analysis; Brushless DC motors; Commutation; Finite element methods; Integrated circuit noise; Magnetic analysis; Magnetic flux; Magnetic sensors; Permanent magnet motors; Rotors; Torque; 3-D finite-element method (3-D FEM); $Z$-axis thrust; Permanent-magnet (PM) overhang; vibration;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2008.2002278
