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Impact of Eccentricity and Demagnetization Faults on Magnetic Noise Generation in Brushless Permanent Magnet DC Motors
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 Title & Authors
Impact of Eccentricity and Demagnetization Faults on Magnetic Noise Generation in Brushless Permanent Magnet DC Motors
Rezig, Ali; Mekideche, Mohammed Rachid; Djerdir, Abdesslem;
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 Abstract
Vibrations and noise in electrical machines are directly related to the characteristics of the radial forces on one hand, and mechanical behavior on the other [1, 4]. The characteristics of these forces depend on the air gap flux density, which is also influenced by other factors, such as stator slots and poles, saturation level, winding type, and certain faults. The aim of this work is to investigate the effect of eccentricity and demagnetization faults on electromagnetic noise generated by the external surface of Permanent Magnet Synchronous Machine [PMSM]. For this purpose, an analytical electromagnetic vibroacoustic model is developed. The results confirm the effect of eccentricity and demagnetization fault in generating some low modes radial forces.
 Keywords
Rotor eccentricity;Demagnetization;Noise and vibration;Radial magnetic force;Mode of vibration;Natural frequency;Acoustic radiation efficiency;Noise spectrum;
 Language
English
 Cited by
1.
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Multi-field Coupling Simulation and Experimental Study on Transformer Vibration Caused by DC Bias,;;;;

Journal of Electrical Engineering and Technology, 2015. vol.10. 1, pp.176-187 crossref(new window)
1.
Vibration-based Fault Diagnosis Approach for Permanent Magnet Synchronous Motors, IFAC-PapersOnLine, 2015, 48, 21, 1444  crossref(new windwow)
2.
Multi-field Coupling Simulation and Experimental Study on Transformer Vibration Caused by DC Bias, Journal of Electrical Engineering and Technology, 2015, 10, 1, 176  crossref(new windwow)
3.
Inductances Evaluation of a Squirrel-Cage Induction Motor with Curved Dynamic Eccentricity, Journal of Electrical Engineering and Technology, 2014, 9, 5, 1623  crossref(new windwow)
4.
Unbalanced Magnetic Force Calculation for Assembly Jig Design, IEEE Transactions on Magnetics, 2012, 48, 11, 4224  crossref(new windwow)
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