Electromagnetic and Temperature 3-D Fields for the Modular Transformers Heating Under High-Frequency Operation

Tomczuk, B.; Koteras, Dariusz; Waindok, Andrzej

doi:10.1109/tmag.2013.2283081

Cited by 18 publications

(5 citation statements)

References 5 publications

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“…Thermal radiation phenomenon is not included in the Tempo solver. Thus, we have modified the boundary condition coefficient taking into account the radiation coefficient in the heating process, according to the following equation [17].…”

Section: Thermal Fields Calcaulationmentioning

confidence: 99%

Archives of Electrical Engineering

Zheng¹,

Wang²,

Dong-wei³

2018

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In this paper, a three-air-gapped structure of a ferrite core for a resonant inductor is proposed. The electromagnetic and thermal field models are built using a 3D finite element method. Compared with the conventional signal-air-gapped structure of a ferrite core, the simulation and analysis results show that the proposed three-air-gapped ferrite core resonant inductor can reduce eddy-current loss and decrease temperature rise. In addition, the optimal position of air-gapped is presented.

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Section: Thermal Fields Calcaulationmentioning

confidence: 99%

Archives of Electrical Engineering

Zheng¹,

Wang²,

Dong-wei³

2018

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“…For the lower frequency (f 2 = 250 Hz) the maximal temperature is equal to 53EC. For the higher temperature, the radiation phenomena should be taken into account within the numerical calculations [7]. In Figures 6 and 7, the heating curves for both supplying frequencies are given.…”

Section: Field Analysesmentioning

confidence: 99%

3D field analysis in 3-phase amorphous modular transformer under increased frequency operation

Tomczuk¹,

Koteras²

2015

Archives of Electrical Engineering

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“…The MFT is still quite a novel technology with lots of research interest. Some designs of high power MFT were reported in [8]- [11]. The ferrite core is considered for medium and high frequency transformers due to its low power loss and low material cost compared to amorphous and nanocrystalline [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Modified Preisach Model of Hysteresis in Multi Air Gap Ferrite Core Medium Frequency Transformer

Michna

Dworakowski²,

Wilk

et al. 2022

IEEE Trans. Power Delivery

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This article presents the modified Preisach model of hysteresis for a 3-phase medium frequency transformer in a 100 kW dual active bridge converter. The transformer magnetic core is assembled out of ferrite I-cores, which results in multiple parasitic air gaps. For this transformer, the hysteresis loops were measured and the parameters of the Preisach model were determined. The Preisach distribution function is approximated with a two-dimensional Gauss function series and the feedback function is a 3rd-degree polynomial. The optimized identification of Preisach distribution function parameters was prepared. Two sets of parameters were determined based on the analysis of major and minor hysteresis loop. The developed model is used to analyze the transformer core power loss. A new set of Steinmetz equation parameters for the multi air gap ferrite core MFT is proposed.

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Electromagnetic and Temperature 3-D Fields for the Modular Transformers Heating Under High-Frequency Operation

Cited by 18 publications

References 5 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

3D field analysis in 3-phase amorphous modular transformer under increased frequency operation

Modified Preisach Model of Hysteresis in Multi Air Gap Ferrite Core Medium Frequency Transformer

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