Power transfer system for exchanging electric power between an electric power system and a battery of an electric vehicle comprising: - a transmitter-side power sub-system electrically coupleable with said electric power system and adapted to exchange AC electric power with said electric power system; - a transmitter-side coil sub-system electrically coupled with said transmitter-side power sub-system and adapted to exchange AC electric power with said transmitter-side power sub-system, said transmitter-side coil sub-system comprising a transmitter coil; - a receiver-side coil sub-system comprising a receiver coil inductively coupleable with said transmitter coil, said receiver-side coil sub-system being adapted to exchange AC electric power with said transmitter-side coil sub-system; - a receiver-side power sub-system electrically coupled with said receiver-side coil sub-system and adapted to exchange AC electric power with said receiver-side coil sub-system, said receiver-side power sub-system being electrically coupleable with said battery and adapted to exchange DC electric power with said battery; - first control means adapted to control operation of said transmitter-side power sub-system; - second control means adapted to control operation of said transmitter-side coil sub-system; - third control means adapted to control operation of said receiver-side coil sub-system and receiver-side power sub-system; - a first communication channel of the wireless type between said first and third control means (6, 8); characterized in that it comprises a second communication channel and a third communication channel between said first and second control means (6, 7), said first and second control means being adapted to assign higher priority to data and/or commands exchanged through said second communication channel with respect to data and/or commands exchanged through said first communication channel and/or through said third communication channel. - a transmitter-side power sub-system electrically coupleable with said electric power system and adapted to exchange AC electric power with said electric power system; - a transmitter-side coil sub-system electrically coupled with said transmitter-side power sub-system and adapted to exchange AC electric power with said transmitter-side power sub-system, said transmitter-side coil sub-system comprising a transmitter coil; - a receiver-side coil sub-system comprising a receiver coil inductively coupleable with said transmitter coil, said receiver-side coil sub-system being adapted to exchange AC electric power with said transmitter-side coil sub-system; - a receiver-side power sub-system electrically coupled with said receiver-side coil sub-system and adapted to exchange AC electric power with said receiver-side coil sub-system, said receiver-side power sub-system being electrically coupleable with said battery and adapted to exchange DC electric power with said battery; - first control means adapted to control operation of said transmitter-side power sub-system; - second control means adapted to control operation of said transmitter-side coil sub-system; - third control means adapted to control operation of said receiver-side coil sub-system and receiver-side power sub-system; - a first communication channel of the wireless type between said first and third control means (6, 8);