DocumentCode :
972031
Title :
Experimental study of harmonic-flux effects in ferromagnetic materials
Author :
Hsu, John S. ; Woodson, Herbert H. ; Liou, Shy-Shenq P.
Author_Institution :
Center for Energy Studies, Texas Univ., Austin, TX, USA
Volume :
25
Issue :
3
fYear :
1989
fDate :
5/1/1989 12:00:00 AM
Abstract :
It is shown that the third-harmonic flux, at zero phase angle with respect to the fundamental flux, can reduce both excitation current and core loss significantly below that with fundamental flux alone under saturated conditions for core materials in which losses are dominated by hysteresis losses. Experimental results also show that the third-harmonic fluxes often occur naturally. They can be preserved when passive filters or externally applied, third-harmonic power sources are used. A three-phase transformer consisting of three single transformers is used as an example to show the potential for reducing the losses and otherwise improving the performance of power apparatus
Keywords :
harmonics; power transformers; core loss reduction; excitation current reduction; ferromagnetic materials; harmonic-flux effects; hysteresis losses; passive filters; power apparatus; saturated conditions; third-harmonic flux; third-harmonic power sources; three single transformers; three-phase transformer; zero phase angle; Core loss; Magnetic flux; Magnetic hysteresis; Magnetic materials; Passive filters; Phase transformers; Power harmonic filters; Production; Rotating machines; Transformer cores;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.24508
Filename :
24508
Link To Document :
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