MIMO INDUCTIVE COUPLING FOR HIGH POWER WIRELESS SYSTEMS
DOI:
https://doi.org/10.36801/Keywords:
Vehicule electrice grele, Sisteme wireless de încărcare a bateriilor, Beton magnetic, Analiză de tip element finitAbstract
Transmitter component of high power inductive wireless transmission systems for electric busses and trucks should be embedded in the road to ensure free circulation of vehicles and to ensure a good mechanical resistance of the pavement, in the charging region, similar to the rest of the road. In such an application, ferrites cannot be envisaged as magnetic flux concentrators due to their fragility. An adequate solution to replace the ferrites consists in using magnetic concrete as a magnetic field concentrator for a wireless inductive transmission system. This solution is analyzed in this paper and used for a MIMO (Multiple-Input-Multiple-Output) inductive wireless power system based on Double-D structure coils, for a transferred power of 125 kW, corresponding to the standard project SAE J2954-2, sufficient for an electric bus for 50 persons. The Finite Element analysis carried out in the paper has the objective of determining the useful and parasitic magnetic coupling parameters of the proposed inductive power transfer system.
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