Determination of the saturated inductance of transformers by analytical formulae, comparison with an electromagnetic field calculation approach and validation by on-site tests.

Author

Rioual, Michel ; Guillot, Yves ; Crépy, Cyrille

Author_Institution

EDF R&D, Clamart, France

fYear

2009

Firstpage

1

Lastpage

6

Abstract

This document describes the determination of the saturated inductance of a transformer, which is the slope of the saturation curve Phi(I) under highly saturated conditions. This parameter, which has a strong impact on the overvoltages when energizing a transformer, has been determined from analytic formulae for a shell-type transformer. Comparisons with the values derived from an electromagnetic 3D calculation and on-site tests are also given in this paper.

Keywords

computational electromagnetics; inductance; transformers; analytical formulae; electromagnetic 3D calculation; electromagnetic field calculation; on-site tests; overvoltages; shell-type transformer; transformers saturated inductance determination; Electric resistance; Electromagnetic analysis; Electromagnetic fields; IEC standards; Inductance; Magnetic circuits; Magnetic cores; Surges; Testing; Transformers; Energization; air-core inductance; core-type; inrush currents; power transformers; saturated inductance; shell-type;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech, 2009 IEEE Bucharest

Conference_Location

Bucharest

Print_ISBN

978-1-4244-2234-0

Electronic_ISBN

978-1-4244-2235-7

Type

conf

DOI

10.1109/PTC.2009.5281829

Filename

5281829