Perforated-plate magnetics. II. Mode-2 inductor/transformer

Author

Kirli, S. ; Ngo, K.D.T. ; Polivka, W.M. ; Walters, M.M.

Author_Institution

Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA

Volume

31

Issue

3

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

977

Lastpage

986

Abstract

As the Mode-1 perforated-plate matrix transformer/inductor (M1PPMT), the Mode-2 perforated-plate matrix inductor/transformer (M2PPMI) is attractive for the construction of low-profile inductors and transformers for switched-mode power converters. Finite-element simulation suggests that the M2PPMI may be approximated as weakly coupled “U-cores”. Conventional inductance formulae for U-cores, however, can underestimate the inductance of the M2PPMI by as much as 50%, the error source being the magnetic material in the winding windows. An analytical approach to model the inductance of the M2PPMI is presented here. The approach is guided by finite-element simulation, and has been verified experimentally. It suggests design guidelines for practical applications of perforated-plate magnetic devices

Keywords

finite element analysis; power inductors; power transformers; transformer windings; Mode-2; design guidelines; error source; finite-element simulation; inductance formulae; low-profile inductors; low-profile transformers; magnetic material; perforated-plate magnetics; perforated-plate matrix transformer/inductor; switched-mode power converters; weakly coupled U-cores; winding windows; Analytical models; Finite element methods; Guidelines; Inductance; Inductors; Magnetic analysis; Magnetic devices; Magnetic materials; Matrix converters; Switching converters;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.395242

Filename

395242