Determination of the weighted mean path length of the Epstein frame
ISSN: 0332-1649
Article publication date: 1 January 2014
Abstract
Purpose
The purpose of this paper is to investigate the effects of the related factors on the mean path length of the Epstein frame and propose a weighted method based on the different specific losses to decide the actual mean path length of the Epstein frame.
Design/methodology/approach
Two Epstein frames of different dimensions (i.e. standard 25 cm and revised 17.5 cm Epstein frame) are used in experiments, and two kinds of the mean path lengths, lm1 and lm2, are defined based on the different specific iron losses produced at the middle part of the limb and the rest of the whole frame, respectively.
Findings
The mean magnetic path varies with many factors such as peak flux density, excitation frequency, permeability as well as the anisotropy of the material under test.
Originality/value
The results play an important role in designing the transformer core and the building factor.
Keywords
Acknowledgements
The authors thank all colleagues of R&D Center, Baoding Tianwei Group Co., Ltd, for their energetic support and helpful discussion. This work was supported by the China Postdoctoral Science Foundation under Grant 2011M500534 and the China Postdoctoral Science Foundation under Grant 2012T50242.
Citation
Qingyi, K., Cheng, Z., Wang, X., Fan, Y., Liu, L., Liu, T. and Guo, J. (2014), "Determination of the weighted mean path length of the Epstein frame", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 33 No. 1/2, pp. 224-233. https://doi.org/10.1108/COMPEL-11-2012-0336
Publisher
:Emerald Group Publishing Limited
Copyright © 2014, Emerald Group Publishing Limited