Electro-Thermal Co-Design of a Cooling System-Integrated High-Frequency Transformer

Park, Yongwan; Yuruker, Sevket U.; Chakraborty, Shiladri; Khaligh, Alireza; Mandel, Raphael; McCluskey, Patrick; Ohadi, Michael M.; Boteler, Lauren; Hinojosa, Miguel

doi:10.1109/itec48692.2020.9161660

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…In a more recent paper [30], an electrothermal PMC design was developed. The objective was to optimize a 10 kW planar transformer with a liquid cooler integrated into the windings.…”

Section: ) Unidimensional Thermal Networkmentioning

confidence: 99%

“…Steady-state 1D thermal network models introduced in [25]- [30] have the advantage of being fast and straightforward. This can be useful for design purposes.…”

Section: Figure 11 Spaced Conductors' Equivalent 1d Thermal Resistanc...mentioning

confidence: 99%

“…Although unidimensional, a semi-analytical model requires good mathematical background. Compared to the other 1D models presented in [25]- [30]; the latter has the advantage of providing continuous spatial and temporal temperature distributions. It also considers the distribution of losses inside the component.…”

Section: Semi-analytical and Numerical Models 1) Semi-analytical Modelsmentioning

confidence: 99%

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Thermal Modeling of Planar Magnetics: Fundamentals, Review and Key Points

2023

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High-frequency and high-power density converters are essential for many applications such as automotive and more electric aircraft. To improve power density, planar magnetic components are increasingly used in power electronic converters owing to their advantages, such as less high-frequency losses, repeatability, and better thermal performance compared to conventional wound components. Considerable attention has been paid to their electrical performance. However, the thermal aspects are essential for enhancing completely their performance. Currently, there is an increasing interest in these critical aspects of high-density power converters. This paper presents a literature review of studies on the thermal modeling of planar magnetics. The papers were organized according to the model type and analyzed to highlight their merits and limitations. A multicriteria comparison of the studied papers was performed. Moreover, the key points and issues related to the thermal modeling are addressed to guide designers in enhancing the thermal aspects of planar magnetic components.INDEX TERMS Planar magnetics, High frequency magnetics, Thermal modeling, high power density.

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“…In a more recent paper [30], an electrothermal PMC design was developed. The objective was to optimize a 10 kW planar transformer with a liquid cooler integrated into the windings.…”

Section: ) Unidimensional Thermal Networkmentioning

confidence: 99%

“…Steady-state 1D thermal network models introduced in [25]- [30] have the advantage of being fast and straightforward. This can be useful for design purposes.…”

Section: Figure 11 Spaced Conductors' Equivalent 1d Thermal Resistanc...mentioning

confidence: 99%

Section: Semi-analytical and Numerical Models 1) Semi-analytical Modelsmentioning

confidence: 99%

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Thermal Modeling of Planar Magnetics: Fundamentals, Review and Key Points

2023

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“…In previous studies, [22][23][24] electro-thermal models of transformers were described. These researches depicts the development and the execution of a thermal model able to calculate the internal temperatures in transformers using numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Transformer differential protection scheme based on self‐adaptive biased characteristic curve and considering cross‐country faults

Shahbazi

Bagheri

Gharehpetian

2022

Circuit Theory & Apps

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The differential protection of transformers sometimes does not have reliable performance facing some faults and events such as saturation of current transformers (CTs) during internal and external faults, inrush currents, and crosscountry faults (CCFs). In this paper, a new transformer differential protection scheme based on the self-adaptive biased characteristic curve and considering CCFs and various disturbances are used. First, the maximum overlap discrete wavelet transform (MODWT) was used to extract the superior characteristics of sampled differential current of the transformer at different levels. Then, by calculating the duty cycle (D) values of energy coefficients extracted in each periodicity by MATLAB software, a new self-adaptive biased characteristic curve will be obtained in different operating conditions. Finally, the percentage differential protection operation is adjusted based on the new adaptive characteristic curve zones. Differential current sampling under different operating conditions was performed on a real three-phase transformer in EMTP software. The simulation results show that the proposed adaptive differential protection scheme can accurately detect various faults and events occurring in the transformer and increase system reliability.

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