Patent ID: 8146513

Claim:
DEVICE FOR RECOVERY OF KINETIC ENERGY IN RAILWAY SYSTEMS, wherein the railway system has a DC catenary ( 20 ) connected to a rectifier bridge block ( 40 ) that is in turn connected to the secondary winding of a transformer ( 30 ), present in the connection of the corresponding substation, the primary winding of which is connected to a three-phase AC grid ( 10 ), the device being connected between the catenary ( 20 ) and the secondary winding of the transformer ( 30 ); characterized in that the device ( 50 ) has a first DC/DC voltage raising block ( 51 , 51 a , 51 b , 51 c ) that isolates from harmonics and fluctuations of the catenary, connected between the catenary ( 20 ) and an intermediate bus provided with a capacitor ( 53 , 53 ′) which in turn is connected with a second block for DC/AC three-phase current generation ( 52 , 52 a , 52 b ) joined to the secondary winding of the transformer ( 30 ); such that during the braking of the corresponding train the said first block allows raising the DC voltage of the catenary, generating a controlled voltage in the intermediate bus; while the said second block, with this controlled voltage, allows generating a high-quality three-phase current that is delivered to the three-phase grid ( 10 ) through the transformer ( 30 ).