SYSTEM OF POWER TRANSFER VIA MAGNETIC COUPLING BY USING RESONANT TECHNIQUES

摘要

The invention relates to a wireless inductive system of power transfer via magnetic coupling, which uses resonant techniques. According to the invention, the system consists of four planar coils, two coils (1, 2) which form together the emission coil, and two other coils (6, 7) which form the reception coil, the emission and reception coils being parallely connected, and magnetically coupled in phase, the system operating in the frequency band 20 kHz...150 kHz, the emission coil (1, 2) being placed on a configuration of ferrite rods (3) arranged in a star-like shape and covering between 35% and 65% of the length of a ferrite rod, the outer coil (2) comprised by the emission coil beginning where the central coil (1) ends, while, in the case of the reception coil, there is a relatively large distance between the end of the central coil (6) and the beginning of the outer coil (7).