Title :
Two dimensional field solutions for high frequency transformer windings
Author :
Lotfi, Ashraf W. ; Lee, Fred C.
Author_Institution :
Virginia Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Analytical two-dimensional (2-D) field solutions produced by conductors located in magnetic cores are developed. The problem of arbitrarily placed rectangular conductors in the window of a ferrite core is solved by deriving analytical field solutions based on combining multiple sets of eigenfunctions in the window space and in each conductor into the 2-D Poisson equation with dynamic source terms. This technique extends classical, high frequency, one-dimensional (1-D) solutions and 2-D, DC solutions, to high frequency, two-dimensional problems. Results show higher accuracy over 1-D methods in computing AC resistance and fields. Improvements are significant due to the incorporation of various 2-D effects, not previously possible in 1-D solutions
Keywords :
eigenvalues and eigenfunctions; high-frequency transformers; magnetic cores; magnetic fields; transformer cores; transformer windings; 2-D Poisson equation; 2D field solutions; AC resistance; DC solutions; dynamic source terms; eigenfunctions; ferrite core; high frequency transformer windings; magnetic cores; rectangular conductors; Conductors; Equations; Ferrites; Frequency; Magnetic analysis; Magnetic cores; Magnetic fields; Power electronics; Solenoids; Windings;
Conference_Titel :
Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-1243-0
DOI :
10.1109/PESC.1993.472055