Accurate Modeling of Buck Converters with Magnetic-Core Inductors

Antonio Astorino, Giulio Antonini, Madhavan Swaminathan

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In this paper, a modeling approach for buck converters with magnetic-core inductors is presented. Due to the high nonlinearity of magnetic materials, the frequency domain analysis of such circuits is not suitable for an accurate description of their behaviour. Hence, in this work, a timedomain model of buck converters with magnetic-core inductors in a SimulinkR environment is proposed. As an example, the presented approach is used to simulate an eight-phase buck converter. The simulation results show that an unexpected system behaviour in terms of current ripple amplitude needs the inductor core hysteretic behavior to be thoroughly taken into account.
Original languageEnglish
Title of host publicationProceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization
Number of pages4
PublisherIEEE
Publication date2015
ISBN (Print)978-1-4799-6811-4
Publication statusPublished - 2015
Event2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization - Carleton University, Ottawa, ON, Canada
Duration: 11 Aug 201514 Aug 2015

Conference

Conference2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization
LocationCarleton University
CountryCanada
CityOttawa, ON
Period11/08/201514/08/2015

Keywords

  • Magnetic hysteresis
  • Circuit analysis computing

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