Acoustic Noise Characterization of Space-Vector Modulated Induction Motor Drives-An Experimental Approach

Binojkumar, AC and Saritha, B and Narayanan, G (2015) Acoustic Noise Characterization of Space-Vector Modulated Induction Motor Drives-An Experimental Approach. In: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 62 (6). pp. 3362-3371.

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Abstract

This paper presents an experimental procedure to determine the acoustic and vibration behavior of an inverter-fed induction motor based on measurements of the current spectrum, acoustic noise spectrum, overall noise in dB, and overall A-weighted noise in dBA. Measurements are carried out on space-vector modulated 8-hp and 3-hp induction motor drives over a range of carrier frequencies at different modulation frequencies. The experimental data help to distinguish between regions of high and low acoustic noise levels. The measurements also bring out the impact of carrier frequency on the acoustic noise. The sensitivity of the overall noise to carrier frequency is indicative of the relative dominance of the high-frequency electromagnetic noise over mechanical and aerodynamic components of noise. Based on the measured current and acoustic noise spectra, the ratio of dynamic deflection on the stator surface to the product of fundamental and harmonic current amplitudes is obtained at each operating point. The variation of this ratio of deflection to current product with carrier frequency indicates the resonant frequency clearly and also gives a measure of the amplification of vibration at frequencies close to the resonant frequency. This ratio is useful to predict the magnitude of acoustic noise corresponding to significant time-harmonic currents flowing in the stator winding.

Item Type:	Journal Article
Publication:	IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords:	Acoustic noise; induction motor; prediction of noise; selection of carrier frequency; space vector modulation; stator deflection; stator vibration; vibrational behavior
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	15 Jun 2015 11:08
Last Modified:	15 Jun 2015 11:08
URI:	http://eprints.iisc.ac.in/id/eprint/51686

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