NDLI: Radial force calculation and acoustic noise prediction in switched reluctance machines

Content Provider	IEEE Xplore Digital Library
Author	Anwar, M.N. Husain, I.
Copyright Year	1999
Description	Author affiliation: Dept. of Electr. Eng., Akron Univ., OH, USA (Anwar, M.N.)
Abstract	The paper presents an analytical method for calculating the radial force and predicting the acoustic noise in switched reluctance machines. The main source of acoustic noise in an SRM is the radial magnetic force inducing resonant vibration with circumferential mode-shapes of the stator. An analytical relationship between radial force and radial vibration is determined, which can be used to predict the noise power level at the frequency of operation. The vibration and sound are functions of machine dimensions, material properties and rotational speed. The knowledge of the circumferential mode-shapes of vibration, the natural mode-frequencies of the stator and the frequency spectrum of the radial magnetic force can be effectively utilized to design SRMs with minimal noise through geometrical design variations. The effect of the number of stator and rotor poles on acoustic noise can also be analyzed with the model presented in this paper. Magneto-dynamic simulation by finite element software is also carried out to verify the calculation of radial force using the proposed analytical model.
Starting Page	2242
Ending Page	2249
File Size	695941
Page Count	8
File Format	PDF
ISBN	078035589X
ISSN	01972618
DOI	10.1109/IAS.1999.799157
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-10-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Acoustic noise Magnetic resonance Magnetic forces Stators Magnetic noise Reluctance machines Frequency Magnetic analysis Noise level
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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