Title :
Generalized representation of transformer electrical steels working under heavily saturated conditions
Author :
Kefalas, Themistoklis D. ; Loizos, George ; Kladas, Antonios G.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
Abstract :
A generalized macroscopic representation of electrical steels used in transformer manufacturing industry is developed. The proposed representation is specifically formulated for integration in the finite element method. Usage of the specific technique enables the accurate evaluation of electromagnetic field distribution of transformer cores under heavily saturated conditions. Advantages over conventional techniques include numerical stability, numerical accuracy, and reduction of iterations of the Newton-Raphson method.
Keywords :
Newton-Raphson method; electromagnetic fields; finite element analysis; soft magnetic materials; transformer cores; Newton-Raphson method; electromagnetic field distribution; finite element method; generalized representation; heavily saturated conditions; transformer cores; transformer electrical steels; Circuit faults; Iron; Materials; Steel; Transformer cores; Wounds; Computer aided analysis; Newton-Raphson method; electromagnetic analysis; finite element methods; magnetic cores; magnetostatics; nonlinear magnetics; numerical analysis; power transformers; soft magnetic materials;
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.2010.5608471
