Journal Paper

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Journal: امیرکبیر
Year:1381 | Volume:13 | Issue:51
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Title

MODELING THE EDDY CURRENT LOSSES OF THE HIGH VOLTAGE WINDING OF POWER TRANSFORMERS FOR TRANSIENT STUDIES

Pages

 Start Page 491 | End Page 498

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Abstract

 One of the most suitable models for studing the electromagnetic transient behavior of the high voltage winding of the power transformers is the detailed model. This model consists of inductive and capacitive effects as well as the eddy current and dielectric losses in the form of lumped parameters. The losses have significant effects on the damping of transient over voltages. In this paper, the eddy current losses are expressed by a matrix which its elements satisfy the proximity effects and skin effects precisely. The matrix is calculated at low frequency by the finite element method (FEM) and then generalized to the high frequencies. simulation are presented for illustration and validation.

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