Title :
An improved two-dimensional numerical modeling method for E-core transformers
Author :
Hoke, Anderson F. ; Sullivan, Charles R.
Author_Institution :
Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA
Abstract :
A new 2D modeling method for E-core transformers adds an extended flux return path to the model of the section perpendicular to the core. Averaged with a section parallel to the core modified to have the same reluctance as the 3D model, the finite-element simulation results for total magnetic energy and magnetic energy in the windings are within 0.2-5.6% error relative to the 3D model in fifteen of sixteen cases, a large improvement over existing methods. A refinement of fringing-flux calculations for gapped core legs is also presented
Keywords :
finite element analysis; magnetic flux; transformer cores; E-core transformers; equal reluctance section; extended flux path; extended flux return path; finite-element simulation; fringing-flux calculations; gapped core legs; magnetic energy; reluctance; total magnetic energy; two-dimensional numerical modeling method; windings; Computer errors; Educational institutions; Erbium; Finite element methods; Iterative methods; Leg; Magnetic cores; Magnetic flux; Numerical models; Transformer cores;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
DOI :
10.1109/APEC.2002.989241
