Title :
Stray losses in power transformer tank walls and construction parts
Author :
Kralj, Lenart ; Miljavec, Damijan
Author_Institution :
ETRA 33 Power Transformers, Ljubljana, Slovenia
Abstract :
The article discusses the eddy current losses generated in a transformer tank walls and other electrically conductive construction parts. The losses are related to the magnetic leakage fields. A time harmonic 3D finite element method is used to compute the magnetic leakage field in the case of nominal load condition of the power transformer. The indirect measuring procedure based on the short circuit method was carried out on many different power transformer designs to validate the simulation results.
Keywords :
eddy current losses; finite element analysis; magnetic leakage; power transformers; eddy current losses; electrically conductive construction parts; magnetic leakage fields; power transformer tank walls; short circuit method; stray losses; time harmonic 3D finite element method; Eddy currents; Impedance; Loss measurement; Magnetic fields; Power transformers; Surface impedance; Windings; Power transformer; eddy current losses; finite element method; stray losses; surface impedance;
Conference_Titel :
Electrical Machines (ICEM), 2010 XIX International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4174-7
Electronic_ISBN :
978-1-4244-4175-4
DOI :
10.1109/ICELMACH.2010.5607891
