DocumentCode
1017210
Title
DC magnetisation of transformers
Author
Ahfock, A. ; Hewitt, A.J.
Author_Institution
Fac. of Eng. & Surveying, Univ. of Southern Queensland, Toowoomba, Qld.
Volume
153
Issue
4
fYear
2006
fDate
7/1/2006 12:00:00 AM
Firstpage
601
Lastpage
607
Abstract
A sufficiently high DC component in the current on the secondary side of a transformer causes distortion of the primary side current. Prediction of such distortion relies on the availability of magnetisation curves that extend deep enough into saturation. A simple test, carried out at rated voltage, is proposed which allows the magnetisation curve to be deduced from measured data. In addition, a systematic procedure has been developed to evaluate the primary-current distortion in both single- and three-phase transformers. Comparison between theoretical predictions and practical measurements are made, with reasonable agreement between the two
Keywords
magnetic hysteresis; nonlinear distortion; transformer cores; transformer magnetic circuits; DC magnetisation; magnetisation curves; magnetising-current distortion; primary side current distortion; secondary transformer side; single-phase transformers; three-phase transformers;
fLanguage
English
Journal_Title
Electric Power Applications, IEE Proceedings -
Publisher
iet
ISSN
1350-2352
Type
jour
Filename
1650877
Link To Document