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Title: Improving magnetic coupling for battery charging through 3D magnetic flux
Authors: Romba, Luis
Valtchev, Stanimir
Melício, Rui
Keywords: WPT
Magnetic field
Magnetic Resonance Circuits (MRC)
Three-Phase system
Issue Date: 25-Sep-2016
Abstract: The spatial distribution of the magnetic field and the coupling between the coils in the Wireless Power Transfer (WPT) systems is an important aspect to consider in the system design and efficiency optimization. The presented study in this paper is based on tests performed on a physical model. The transmitting (primary) equipment, is an electrical three-phase system, capable to be connected in star or delta (both electrically and geometrically). The measured results allow to describe graphically the magnetic field distribution in three dimensions. The analytical formulas aim to help to understand and to quantify the physical phenomena but they cannot be considered a universal approach and the measurement results help to understand better the observable facts. In the WPT, the key issues that will influence the efficiency, are the alignment of the coils, the spatial orientation of the magnetic field, the detachment and the tilt between the windings, all they changing the magnetic coupling between the transmitter and the receiver of energy. This research is directed not only to the magnetic field distribution but finally, to optimize the energy transfer efficiency.
Type: lecture
Appears in Collections:FIS - Comunicações - Em Congressos Científicos Internacionais

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