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Comprehensive modelling of dynamic hysteresis loops in the rolling and transverse directions for transformer laminations

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Title Comprehensive modelling of dynamic hysteresis loops in the rolling and transverse directions for transformer laminations
 
Creator BAGHEL, APS
GUPTA, A
CHWASTEK, K
KULKARNI, SV
 
Subject ORIENTED FE-SI
MAGNETIC-MATERIALS
ELECTRICAL STEEL
LOSSES
DEPENDENCE
SEPARATION
CURVES
Dynamic losses
Magnetic viscosity approach
Grain-oriented laminations
Jiles-atherton model
 
Description Magnetic properties of grain oriented materials are affected by hysteresis, anisotropy and dynamic efects. The attempts to describe dynamic hysteresis loops are usually limited to the rolling direction (RD). On the other hand, modelling of magnetic properties for the transverse direction (TD) is important for numerical analysis of core-joints and corner regions in transformers. For this direction, hysteresis loops reveal complex shapes particularly for dynamic magnetization conditions. This paper presents a comprehensive approach for modelling of dynamic hysteresis loops in RD and TD. This work uses the magnetic viscosity-based approach, which is able to describe irregular widening of dynamic loops. The loss separation scheme is also considered for both principal directions. Variations of loss components with frequency for both directions are discussed. The computed dynamic loops in RD and TD are in a close agreement with experimental ones. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2016-01-15T04:54:03Z
2016-01-15T04:54:03Z
2015
 
Type Article
 
Identifier PHYSICA B-CONDENSED MATTER, 462,86-92
0921-4526
1873-2135
http://dx.doi.org/10.1016/j.physb.2015.01.026
http://dspace.library.iitb.ac.in/jspui/handle/100/17808
 
Language en