High Frequency Planar Transformer (HFPT) for Universal Contact-Less Battery Charging Platform

High frequency planar transformer (HFPT) is an up-and-coming technology which can be used for designing a contact-less battery charging platform. In this paper, fractal-based high frequency planar transformers are presented with two different structures: 4-to-1 and 16-to-4 turn ratio. Because they a...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2011-10, Vol.47 (10), p.2764-2767
Main Authors: Panchal, Chirag, Lu, Jun-Wei
Format: Article
Language:English
Subjects:
Batteries
Capacitors
Contact-less battery charging
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
finite-element method (FEM)
fractal winding
Fractals
high frequency planar transformer (HFPT)
Magnetic domains
Magnetic noise
Magnetic shielding
Materials science
Other topics in materials science
Physics
Windings
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Summary:High frequency planar transformer (HFPT) is an up-and-coming technology which can be used for designing a contact-less battery charging platform. In this paper, fractal-based high frequency planar transformers are presented with two different structures: 4-to-1 and 16-to-4 turn ratio. Because they are PCB-based transformers, two cases of 0.8 mm and 1.6 mm thickness were investigated. A finite-element method has been used to calculate the magnetic field. LLC resonant converter has been designed to improve the conversion efficiency. The voltage ratio has been measured with and without a capacitor at the primary side. The winding with a capacitor can increase the efficiency without any distortion and harmonics.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2011.2156768