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Accurate Modeling of Buck Converters with Magnetic-Core Inductors

  • Antonio Astorino
  • , Giulio Antonini
  • , Madhavan Swaminathan
    • Universita degli Studi dell’Aquila
    • Georgia Institute of Technology

    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, Canada
    Duration: 11 Aug 201514 Aug 2015
    https://ieeexplore.ieee.org/xpl/conhome/7406207/proceeding

    Conference

    Conference2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization
    LocationCarleton University
    Country/TerritoryCanada
    CityOttawa
    Period11/08/201514/08/2015
    Internet address

    Keywords

    • Magnetic hysteresis
    • Circuit analysis computing

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