Acoustic Signature Analysis and Sound Source Localization for a Three-Phase AC Induction Motor

Anand Krishnasarma, Seyed Jamaleddin Mostafavi Yazdi, Allan Taylor, Daniel Ludwigsen and Javad Baqersad
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Anand Krishnasarma: NVH & Experimental Mechanics Laboratory, Kettering University, 1700 University Avenue, Flint, MI 48504, USA
Seyed Jamaleddin Mostafavi Yazdi: NVH & Experimental Mechanics Laboratory, Kettering University, 1700 University Avenue, Flint, MI 48504, USA
Allan Taylor: NVH & Experimental Mechanics Laboratory, Kettering University, 1700 University Avenue, Flint, MI 48504, USA
Daniel Ludwigsen: NVH & Experimental Mechanics Laboratory, Kettering University, 1700 University Avenue, Flint, MI 48504, USA
Javad Baqersad: NVH & Experimental Mechanics Laboratory, Kettering University, 1700 University Avenue, Flint, MI 48504, USA

Energies, 2021, vol. 14, issue 21, 1-14

Abstract: As part of the recent electrification of the transportation industry, internal combustion engines are being coupled with or replaced by electric motors. This movement towards an electrified drivetrain poses new noise, vibration, and harshness (NVH) challenges related to electric motors. In this paper, the acoustic signature of an electric motor was analyzed to obtain a better understanding of the sound generated by these motors. This work provides an insight into an acoustic measurement technique that can be used to identify certain frequency bands that significantly contribute to the perceived sound. In the first part, the structural response of the motor was correlated with its acoustic spectra. Furthermore, data from acoustic and structural measurements were used to analyze the order content of the signal and identify critical contributors to the overall perceived sound. The differences between data captured by microphones in different positions around the motor helped to localize components of the overall sound. The results provide some discussion about techniques to decrease the overall sound. The technique described in this paper can be extended to fan-cooled motors that are used in vehicles such as golf carts or as auxiliary motors in electric/hybrid vehicles, as well as across a wide range of industrial applications.

Keywords: NVH; acoustics; electric motors; noise; sound source localization; vibrations (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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