Title :
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
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;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5281829
