Core Loss Evaluation in Powder Cores: A Comparative Comparison between Electrical and Calorimetric Methods

Ishikura, Yuki; Imaoka, Jun; Noah, Mostafa; Yamamoto, Masaaki

doi:10.23919/ipec.2018.8508012

Cited by 14 publications

(6 citation statements)

References 19 publications

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“…Core loss depends on many aspects that must be considered [ 74 , 75 ]: Relative permeability. Magnetic saturation point.…”

Section: General Core Losses Modelsmentioning

confidence: 99%

“…Using the SPG, the changes of Steinmetz in i GSE can be considered; it is also possible to calculate the core loss under any density flux waveform [ 19 , 74 ].…”

Section: General Core Losses Modelsmentioning

confidence: 99%

“…Core loss depends on many aspects that must be considered [74,75]: Peak-to-peak value of magnetic flux density.…”

Section: General Core Losses Modelsmentioning

confidence: 99%

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Power Losses Models for Magnetic Cores: A Review

et al. 2022

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In power electronics, magnetic components are fundamental, and, unfortunately, represent one of the greatest challenges for designers because they are some of the components that lead the opposition to miniaturization and the main source of losses (both electrical and thermal). The use of ferromagnetic materials as substitutes for ferrite, in the core of magnetic components, has been proposed as a solution to this problem, and with them, a new perspective and methodology in the calculation of power losses open the way to new design proposals and challenges to overcome. Achieving a core losses model that combines all the parameters (electric, magnetic, thermal) needed in power electronic applications is a challenge. The main objective of this work is to position the reader in state-of-the-art for core losses models. This last provides, in one source, tools and techniques to develop magnetic solutions towards miniaturization applications. Details about new proposals, materials used, design steps, software tools, and miniaturization examples are provided.

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“…Core loss depends on many aspects that must be considered [ 74 , 75 ]: Relative permeability. Magnetic saturation point.…”

Section: General Core Losses Modelsmentioning

confidence: 99%

“…Using the SPG, the changes of Steinmetz in i GSE can be considered; it is also possible to calculate the core loss under any density flux waveform [ 19 , 74 ].…”

Section: General Core Losses Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Power Losses Models for Magnetic Cores: A Review

et al. 2022

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show abstract

“…Using the SPG, the changes of Steinmetz in iGSE can be considered; it is also possible to calculate the core loss under any density flux waveform [19,74].…”

Section: Empirical Modelsmentioning

confidence: 99%

Emerging Power Electronics Technologies for Sustainable Energy Conversion

2023

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“…On the other hand, core loss calculations presented in [13][14][15][16][17][18][19][20][21][22] were performed assuming that the magnetic flux density distribution in the core is uniform. As mentioned above, since the magnetic flux density distribution in the powder core is nonuniform, this calculation method may contain large errors [16].…”

Section: Introductionmentioning

confidence: 99%

Improved core loss calculation method considering the non‐uniform distribution of magnetic flux density in powder cores

Ishikura¹,

Imaoka²,

Noah³

et al. 2019

IET Power Electronics

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Utilising powder cores in many power electronics applications have gained much attention due to the attractive magnetic properties of powder core materials. However, the magnetic flux density distribution is non-uniform along the core because the flux is dependent on the core geometry and due to the low relative permeability of the powder core material. The non-uniformity of the magnetic flux density distribution may cause huge calculation errors of core losses. Understanding the effect of the magnetic flux non-uniformity in the powder cores allows the circuit designer to accurately estimate the core losses in powder cores. This work addresses the negative effect of the inherent non-uniform magnetic flux density distribution on the core loss. Furthermore, an equivalent circuit to consider the non-uniform of the magnetic flux density distribution is proposed. The proposed circuit enables the core loss to be estimated more precisely. A reduction of 12% in the core loss measurement error has been reported while utilising the proposed circuit compared to traditional equivalent circuits. Along with the theoretical discussion, finite element method simulation and experimental results are also presented to evaluate the proposed core loss calculation method.

show abstract

Core Loss Evaluation in Powder Cores: A Comparative Comparison between Electrical and Calorimetric Methods

Cited by 14 publications

References 19 publications

Power Losses Models for Magnetic Cores: A Review

Power Losses Models for Magnetic Cores: A Review

Emerging Power Electronics Technologies for Sustainable Energy Conversion

Improved core loss calculation method considering the non‐uniform distribution of magnetic flux density in powder cores

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