A systematic approach to modeling impedances and current distribution in planar magnetics

Minjie Chen, Mohammad Araghchini, Khurram K. Afridi, Jeffrey H. Lang, Charles R. Sullivan, David J. Perreault

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Planar magnetic components using printed-circuit-board windings are attractive due to their high repeatability, good thermal performance and usefulness for realizing intricate winding patterns. To enable higher system integration at high switching frequency, more sophisticated methods that can rapidly and accurately model planar magnetics are needed. This paper develops a lumped circuit model that captures the impact of skin and proximity effects on current distribution and electromagnetic fields in planar magnetics. This enables accurate predictions of impedances, losses, stored reactive energy and current sharing among parallel windings. This lumped model is also a circuit domain representation of electromagnetic interactions. It can be used to simulate circuits incorporating planar magnetics, to visualize the electromagnetic fields, and to extract parameters for magnetic models by simulations. The modeling results match with previous theories and finite-element-modeling results. A group of planar magnetic devices, including transformers and inductors with various winding patterns, are prototyped and measured to validate the proposed approach.

Original languageEnglish (US)
Title of host publication2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
PublisherIEEE Computer Society
ISBN (Print)9781479921478
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
Event2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014 - Santander, Spain
Duration: Jun 22 2014Jun 25 2014

Publication series

Name2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014

Other

Other2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
CountrySpain
CitySantander
Period6/22/146/25/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Modeling and Simulation

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