Physical Modelling of Core Losses in Ferrite E-Cores
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Date
2025
Publication Type
Journal Article
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yes
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Abstract
The development of advanced power electronic converters requires an accurate calculation of core losses in magnetic devices. But the losses in the widely used ferrite cores depend on the shape of the core, especially above 100kHz, meaning that core losses can not be estimated by simply scaling reference data with respect to the volume of the core. To include efficiently the geometry of the core into the calculation of core losses, this article presents the Combined Field and Material Model (CFM²) for E- or U-cores. This method combines an analytical solution of the field in the core with a non-linear material model of ferrite, modelling all relevant loss phenomena such as hysteresis losses and non-linear resonant eddy currents. The CFM² enables an accurate calculation of core losses over a wide range of frequency and flux density using a reduced set of physical parameters.
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Publication status
published
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Book title
Journal / series
Volume
6
Pages / Article No.
597 - 612
Publisher
IEEE
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Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Core Losses; Ferrite; Magnetics; Eddy Currents
Organisational unit
03889 - Biela, Jürgen / Biela, Jürgen