Open AccessMIMO INDUCTIVE COUPLING FOR HIGH POWER WIRELESS SYSTEMS
Author(s) -
Andrei Marinescu,
Tiberiu Tudorache,
Adrian Vintilă
Publication year - 2021
Publication title -
actualităţi şi perspective în domeniul maşinilor electrice
Language(s) - English
Resource type - Journals
ISSN - 1843-5912
DOI - 10.36801/apme.2021.1.9
Subject(s) - inductive coupling , wireless power transfer , maximum power transfer theorem , power transmission , inductive charging , electrical engineering , wireless , transmission (telecommunications) , transmitter , coupling (piping) , mimo , electromagnetic coil , power (physics) , engineering , electronic engineering , computer science , mechanical engineering , telecommunications , physics , channel (broadcasting) , quantum mechanics
Transmitter component of high power inductive wireless transmission systems for electric busses and trucks should be embedded in the road to ensure a 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 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 magnetic field concentrator for wireless inductive transmission system. This solution is analyzed in this paper and used for an 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