Medium Frequency Transformer Design with Ārtap Framework

Orosz, Tamás; Pánek, David; Karban, Pavel; Oliveira, Roberto; Pina, João Murta

doi:10.1109/iwed48848.2020.9069502

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…For instance, in the case of the modern, solid-state transformers, the determination of the minimal losses and optimal value of inductances needs an accurate calculation of the medium, high-frequency harmonics and the caused non-linearities [6][7][8][9][10][11]. Or in the case of large power transformers, the thermal and the electrical properties should be examined together with the mechanical stresses in their windings [3,4,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Transformer Model Identification by Ārtap

Kuczmann

Szűcs

Kovács

2021

Period. Polytech. Elec. Eng. Comp. Sci.

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The paper presents how Ārtap can be used for determining the equivalent circuit parameters of a one phase transformer as a benchmark problem. The following unknown parameters of the equivalent circuit are identified: primary resistance and primary leakage reactance, secondary resistance and secondary leakage reactance, finally magnetizing resistance, and magnetizing reactance. The known quantities from measurement are the primary voltage, primary current, power factor, secondary voltage, and the load resistance. Algorithms implemented in Ārtap are used for determining the transformer parameters and the results are compared with the analytical solution.

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Section: Introductionmentioning

confidence: 99%

Transformer Model Identification by Ārtap

Kuczmann

Szűcs

Kovács

2021

Period. Polytech. Elec. Eng. Comp. Sci.

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“…One of the most common structures of the medium and high frequency solid state transformers is the cascaded H-bridge topology. This can be composed from many stages [2,3], to reach high-current or high-voltage requirements, resolving the power-semiconductor limitations [2,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…There are many papers, which presents loss prediction and the design of magnetic components [1,2,4,7,[9][10][11][12][13][14][15][16][17][18][19][20][21]. Most of the design methodologies are still based on the Dowell formulas, which has certain limitations [1,9,11,22] and most of the conventional converter designs applies sandwich windings to increase the coupling of the transformer [20].…”

Section: Introductionmentioning

confidence: 99%

Design Analysis of High Frequency Linear Transformer with Ārtap Framework

Orosz

Stępień

Poór

2021

Period. Polytech. Elec. Eng. Comp. Sci.

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This paper presents the design and a design analysis of a coaxial, linear transformer. This is a novel high frequency transformer concept for energy conversion. The examined transformer was designed for 1 MHz nominal frequency. One of the main advantages of the proposed transformer design is its simple winding system. It contains only two coaxial copper tubes, which can be easily manufactured and modeled with high precision. One of the key design tasks is the minimization of the leakage inductance. The inductance of the straight coils depends on the ratio of the height and the diameter of the coil. Therefore, a three-dimensional FEM analysis is sufficient to calculate the optimal length of the linear transformer. The planar 2D model and the 3D model of the transformer are presented in this paper. The accuracy of the 2D and 3D calculation results were compared to each other and to the measurements to show the applicability of the planar 2D models. Moreover, the sensitivity of the losses and the leakage inductance with respect to the winding parameters is presented. The dependencies of the design variables on the performance parameters, such as the power mass density and the leakage inductance of this transformer concept were examined. It was shown that the value of the leakage inductance is a linear function of the ratio of the length and the diameter of the transformer windings.

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