Finite element analysis of transformer model core with measured reluctivity tensor

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.619679· OSTI ID:566472

Enokizono, Masato; Soda, Naoya ^[1]

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1. Oita Univ. (Japan). Dept. of Electrical and Electronic Engineering

The study of soft magnetic materials commonly used in rotating machines and three-phase transformers is very important for saving energy. In order to save energy, the authors have to solve lots of problems, for which they have to grasp correct behaviors of B and H in core materials, and improve finite element formulations considering the properties. This paper presents a new expression of the vector magnetic properties under alternating and rotating flux conditions. The expression is defined by an improved reluctivity tensor based on measured results. Moreover, the expression is more accurate than conventional expressions about the approximation of magnetic properties in arbitrary direction. Accordingly, the new expression is introduced into a finite element formulation, and applied to a simple anisotropic magnetic field problem. As a result, it is shown that the expression is applicable generally to anisotropic problems.

• OSTI ID: 566472
• Report Number(s): CONF-970468--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 5Pt2 Vol. 33; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ELECTRIC POWER INDUSTRY
ENERGY CONSERVATION
FINITE ELEMENT METHOD
MAGNET CORES
MAGNETIC FIELDS
MAGNETIC PROPERTIES
TRANSFORMERS