DocumentCode
3560397
Title
Magneto-Mechanical Resonance in a Model 3-Phase 3-Limb Transformer Core Under Sinusoidal and PWM Voltage Excitation
Author
Yao, Xiao Guang ; Phway, Thant P P ; Moses, A.J. ; Anayi, Fatih
Author_Institution
Wolfson Centre for Magnetics, Cardiff Univ., Cardiff
Volume
44
Issue
11
fYear
2008
Firstpage
4111
Lastpage
4114
Abstract
This investigation presents the measurement results of acoustic noise and vibration of a model three-phase three-limb transformer core under sinusoidal and PWM voltage excitation for assigned value of modulation index with switching frequency from 1 kHz to 3 kHz at no-load condition. Results show that the acoustic noise decreased around 2 (dBA) with increasing switching frequency. However, magneto-mechanical resonance phenomenon was observed at 3 kHz vibration frequency, which could cause excess acoustic noise under some excited conditions.
Keywords
acoustic noise; magnetic resonance; magnetomechanical effects; transformer cores; vibrations; PWM voltage excitation; acoustic noise; frequency 1 kHz to 2 kHz; magneto-mechanical resonance; model three-phase three-limb transformer core; modulation index; sinusoidal voltage excitation; switching frequency; vibration; Acoustic noise; PWM; magneto-mechanical resonance; vibration;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2008.2002790
Filename
4717762
Link To Document