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Improved Analysis and Modelling of Leakage Inductance for Planar Transformers
Planar transformers have often been mistaken to essentially have lower leakage inductances. The “radial effect” is a nature characteristic for planar windings due to a higher aspect ratio of conductor width to conductor thickness, which gives a reduction of leakage inductance. Traditional formulas of leakage inductance calculation for traditional transformers where the winding width is much smaller than the winding height, b<>h). This paper specifically tailors the traditional 1-D solution of leakage inductance calculation by decomposing the leakage flux into longitudinal and transversal flux, and thus the “eddy current effect” and the “radial effect” in leakage inductance can be analyzed individually. The proposed new formula including both ac (high frequency eddy current effect) and dc effects (radial effect) gives an accurate prediction of leakage inductance in planar transformers. Finite Element Analysis (FEA) simulation and measurements are carried out to validate the proposed formula.
Improved Analysis and Modelling of Leakage Inductance for Planar Transformers
Planar transformers have often been mistaken to essentially have lower leakage inductances. The “radial effect” is a nature characteristic for planar windings due to a higher aspect ratio of conductor width to conductor thickness, which gives a reduction of leakage inductance. Traditional formulas of leakage inductance calculation for traditional transformers where the winding width is much smaller than the winding height, b<>h). This paper specifically tailors the traditional 1-D solution of leakage inductance calculation by decomposing the leakage flux into longitudinal and transversal flux, and thus the “eddy current effect” and the “radial effect” in leakage inductance can be analyzed individually. The proposed new formula including both ac (high frequency eddy current effect) and dc effects (radial effect) gives an accurate prediction of leakage inductance in planar transformers. Finite Element Analysis (FEA) simulation and measurements are carried out to validate the proposed formula.
Improved Analysis and Modelling of Leakage Inductance for Planar Transformers
Ouyang, Ziwei (author) / Hurley, William Gerard (author) / Andersen, Michael A. E. (author)
2018-01-01
Ouyang , Z , Hurley , W G & Andersen , M A E 2018 , Improved Analysis and Modelling of Leakage Inductance for Planar Transformers . in Proceedings of PCIM Asia 2018 . VDE Verlag , PCIM Asia 2018: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management , Shanghai , China , 26/06/2018 .
Article (Journal)
Electronic Resource
English
Improved Analysis and Modelling of Leakage Inductance for Planar Transformers
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