Electromagnetic Vibration of Motor Core Including Magnetostriction Under Different Rotation Speeds

The vibration of permanent magnet synchronous motor (PMSM) cores is related to the rotation speed. This paper presents a generalized magnetoelastic 3-D finite-element model, which can be used to calculate the magnetic field and structural vibration of laminated cores, including magnetostrictive effe...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2016-03, Vol.52 (3), p.1-4
Main Authors: Zhu, Lihua, Wang, Bin, Yan, Rongge, Yang, Qingxin, Yang, Yimei, Zhang, Xin
Format: Article
Language:English
Subjects:
Electromagnetic vibration
Magnetic cores
Magnetism
Magnetostriction
Mathematical models
Motors
numerical model
Permanent magnet motors
Permanent magnets
rotation speed
Stators
Synchronous motors
Vibration
Vibration analysis
Vibration measurement
Vibrations
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Summary:The vibration of permanent magnet synchronous motor (PMSM) cores is related to the rotation speed. This paper presents a generalized magnetoelastic 3-D finite-element model, which can be used to calculate the magnetic field and structural vibration of laminated cores, including magnetostrictive effect. Magnetostriction (MS) is a property of electrical steel and causes the vibration of motor cores, the primary cause being electromagnetic forces. To implement the model, the vibration of a PMSM core was numerically analyzed under excitation with different frequencies. The speed and vibration were measured simultaneously by pulse and accelerometer sensors, and the variation of speed and vibration features was analyzed by Fast Fourier Transformation (FFT) versus Revolutions per minute (RPM). The numerically analyzed results showed that the vibration due to MS is important, and the magnitude of vibration is related to the operating speed. Vibration and speeds of the motor were tested and analyzed. The results showed that there is a vibration peak in the range of 600-2000 r/min (30-100 Hz), which is acceptable in calculation.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2015.2497738