The Noise and Vibration Analysis of BLDC Motor Due to Asymmetrical Permanent-Magnet Overhang Effects

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...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2008-09, Vol.44 (5), p.1569-1577
Main Authors: Kang, Gyu-Hong, Son, Young-Dae, Kim, Gyu-Tak
Format: Article
Language:English
Subjects:
3-D finite-element method (3-D FEM)
Asymmetry
Brushless DC motors
Brushless motors
Commutation
Finite element methods
Integrated circuit noise
Magnetic analysis
Magnetic flux
Magnetic sensors
Motors
Overhang
Permanent magnet motors
Permanent-magnet (PM) overhang
Ripples
Rotors
Thrust
Torque
Vibration
Vibration analysis
Z -axis thrust
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Summary: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.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2008.2002278