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Core Loss Analysis of Permanent Magnet Linear Synchronous Generator Considering the 3-D Flux Path

Authors
Kim, Chang-WooKim, Jeong-ManSeo, Sung-WonAhn, Ji-HunHong, KeyyongChoi, Jang-Young
Issue Date
3월-2018
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
3-D flux path; core loss analysis; Steinmetz equation; synchronous generator core loss
Citation
IEEE TRANSACTIONS ON MAGNETICS, v.54, no.3
Journal Title
IEEE TRANSACTIONS ON MAGNETICS
Volume
54
Number
3
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/471
DOI
10.1109/TMAG.2017.2751076
ISSN
0018-9464
1941-0069
Abstract
This paper presents an analysis of the core loss observed in the stator of a permanent magnet linear synchronous generator. Core loss is usually calculated using the classical Steinmetz equation, but it leads to erroneous results. Consequently, several researchers have proposed modified versions of this equation, taking into account the hysteresis loss, eddy current loss, and excess loss. In this paper, we calculated all loss coefficients from the Epstein test data using a curve fitting method. Moreover, we separated the rotating and alternating fields based on the time harmonics observed with changes in the magnetic flux density. In addition, we considered the 2-D and 3-D plane flux paths that cause magnetic flux leakage. Finally, the core loss of the linear machine was calculated using a modified Steinmetz equation that considers the flux path.
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