Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission

Conference: Smart Systems Integration - 13th International Conference & Exhibition on Integration Issues of Miniaturized Systems
04/10/2019 - 04/11/2019 at Barcelona, Spain

Proceedings: SmartSystems Integration

Pages: 4Language: englishTyp: PDF

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Lange, Sven; Bueker, Maik-Julian; Sievers, Denis; Hedayat, Christian; Foerstner, Jens; Hilleringmann, Ulrich (Fraunhofer ENAS, Warburger Str. 100, 33098 Paderborn)
Otto, Thomas (Fraunhofer ENAS, Technologie-Campus 3, 09126 Chemnitz, Germany)

This paper presents a new methodology by using a multiple coil array for energy transmission. The complex current strengths of the transmitting coil array are calculated by having the knowledge about of the mutual inductances and the symmetries of the transmitting coil array, so that its resulting magnetic field mainly penetrates only the receiving coil and is strongly attenuated outside. This method is used for an optimized wireless energy transmission but can also be implemented for other inductive applications.