DocumentCode
1183042
Title
Shielding effectiveness for a three-phase transformer at various harmonic frequencies
Author
Di Pasquale, A. ; Antonini, Giulio ; Orlandi, Antonio
Author_Institution
UAq EMC Lab., Univ. of L´Aquila, L´Aquila
Volume
3
Issue
2
fYear
2009
fDate
3/1/2009 12:00:00 AM
Firstpage
175
Lastpage
183
Abstract
A two-step optimisation procedure for the design of a passive shield aimed at decreasing the low-frequency magnetic field using a transformer is presented. After having introduced the relevant characteristics of the medium size three-phase transformer, the procedure is described in detail. It is based on the decomposition in the harmonic component of the radiated field, which is associated with the direct, inverse and homopolar sequences of the current of the transformer. The effect of the optimised shield is verified by measurements.
Keywords
power transformers; harmonic frequencies; homopolar sequences; low-frequency magnetic field; three-phase transformer; two-step optimisation procedure;
fLanguage
English
Journal_Title
Science, Measurement & Technology, IET
Publisher
iet
ISSN
1751-8822
Type
jour
DOI
10.1049/iet-smt:20080043
Filename
4796903
Link To Document