Title :
Perforated-plate magnetics. I. Mode-1 inductor/transformer
Author :
Osegueda, E. ; Ngo, K.D.T. ; Polivka, W.M. ; Walters, M.M.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
Two operating modes have been identified for a matrix inductor/transformer made by weaving conductors through the holes perforated in a flat magnetic plate. The Mode-1 perforated-plate matrix transformer (M1PPMT) is analyzed to assess its suitability for low-profile power converters. Analysis and finite-element simulation suggest that this type of transformer may be approximated as a collection of weakly coupled “toroidal” cores. Thus, it is possible to derive closed-form expressions relating typical performance parameters, such as magnetizing inductance and losses, to the hole radius, identified as a meaningful design parameter. High peak flux density around the holes appears to be a problem. Nevertheless, it is possible to design a 100 W M1PPMT with acceptable magnetizing inductance, efficiency, and power density
Keywords :
finite element analysis; power convertors; power inductors; power transformers; transformer cores; 100 W; M1PPMT; closed-form expressions; efficiency; finite-element simulation; flat magnetic plate; high peak flux density; hole radius; low-profile power converters; magnetizing inductance; matrix inductor/transformer; perforated-plate magnetics; power density; toroidal cores; Analytical models; Conductors; Finite element methods; Inductance; Inductors; Magnetic analysis; Magnetic flux; Matrix converters; Transformer cores; Weaving;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
