UNSPECIFIED (2000) Analysis and reduction of acoustic noise from a brushless DC drive. In: Annual Meeting of the IEEE-Industry-Applications-Society, OCT 03-07, 1999, PHOENIX, AZ.

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Abstract

It has been found that stator excitation in brushless de drives can excite mechanical resonances in the motor and, thus, produce acoustic noise in a similar way to switched reluctance drives, A technique has been developed to alter the commutation pattern of a brushless de motor to avoid exciting and reinforcing these mechanical resonances producing a significant reduction in pure tone acoustic noise which is emitted during mechanical resonance, The origin of the vibration and acoustic noise is explained and the theory of discrete frequency noise reduction described in this paper. The method proposed for quieter control of the brushless de motor could be achieved at a very low cost.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Journal or Publication Title:	IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN:	0093-9994
Date:	May 2000
Volume:	36
Number:	3
Number of Pages:	6
Page Range:	pp. 772-777
Publication Status:	Published
Title of Event:	Annual Meeting of the IEEE-Industry-Applications-Society
Location of Event:	PHOENIX, AZ
Date(s) of Event:	OCT 03-07, 1999
URI:	http://wrap.warwick.ac.uk/id/eprint/13323

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