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

Volume

44

Issue

5

fYear

2008

Firstpage

1569

Lastpage

1577

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;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2008.2002278

Filename

4629355