Accurate modeling of buck converters with magnetic-core inductors

Antonio Astorino; Giulio Antonini; Madhavan Swaminathan

doi:10.1109/NEMO.2015.7415008

Accurate modeling of buck converters with magnetic-core inductors

Antonio Astorino, Giulio Antonini, Madhavan Swaminathan

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

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 time-domain model of buck converters with magnetic-core inductors in a Simulink® 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 language	English (US)
Title of host publication	Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479968114
DOIs	https://doi.org/10.1109/NEMO.2015.7415008
State	Published - 2015
Event	IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015 - Ottawa, Canada Duration: Aug 11 2015 → Aug 14 2015

Publication series

Name	Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015

Conference

Conference	IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015
Country/Territory	Canada
City	Ottawa
Period	8/11/15 → 8/14/15

All Science Journal Classification (ASJC) codes

Control and Optimization
Radiation
Electrical and Electronic Engineering
Numerical Analysis
Modeling and Simulation

Access to Document

10.1109/NEMO.2015.7415008

Cite this

Astorino, A., Antonini, G., & Swaminathan, M. (2015). Accurate modeling of buck converters with magnetic-core inductors. In Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015 Article 7415008 (Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NEMO.2015.7415008

Astorino, Antonio ; Antonini, Giulio ; Swaminathan, Madhavan. / Accurate modeling of buck converters with magnetic-core inductors. Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015. Institute of Electrical and Electronics Engineers Inc., 2015. (Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015).

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title = "Accurate modeling of buck converters with magnetic-core inductors",

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 time-domain model of buck converters with magnetic-core inductors in a Simulink{\textregistered} 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.",

author = "Antonio Astorino and Giulio Antonini and Madhavan Swaminathan",

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Astorino, A, Antonini, G & Swaminathan, M 2015, Accurate modeling of buck converters with magnetic-core inductors. in Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015., 7415008, Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015, Institute of Electrical and Electronics Engineers Inc., IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015, Ottawa, Canada, 8/11/15. https://doi.org/10.1109/NEMO.2015.7415008

Accurate modeling of buck converters with magnetic-core inductors. / Astorino, Antonio; Antonini, Giulio; Swaminathan, Madhavan.
Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7415008 (Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - 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 time-domain model of buck converters with magnetic-core inductors in a Simulink® 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.

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Astorino A, Antonini G, Swaminathan M. Accurate modeling of buck converters with magnetic-core inductors. In Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7415008. (Proceedings of 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2015). doi: 10.1109/NEMO.2015.7415008

Accurate modeling of buck converters with magnetic-core inductors

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