DEVICE AND CONTROL PROCEDURE FOR RECOVERY OF KINETIC ENERGY IN RAILWAY SYSTEMS
First Claim
1. 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, 51a, 51b, 51c) 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, 52a, 52b) 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).
2 Assignments
0 Petitions
Accused Products
Abstract
The railway system has a DC voltage catenary (20) connected to a rectifier bridge block (40) that is in turn connected to a transformer (30) joined to a three-phase AC grid (10). The device (50) has a first DC/DC voltage raising block (51) connected between the catenary (20) and an intermediate bus that is connected to a second DC/AC three-phase current generation block (52) joined to the transformer (30). The first block (51) allows raising the DC voltage of the catenary (20) generating a controlled voltage with which the second block (52) generates a high-quality three-phase current that is delivered to the grid (10).
17 Citations
18 Claims
-
1. 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, 51a, 51b, 51c) 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, 52a, 52b) 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). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- characterized in that the device (50) has a first DC/DC voltage raising block (51, 51a, 51b, 51c) that isolates from harmonics and fluctuations of the catenary, connected between the catenary (20) and an intermediate bus provided with a capacitor (53, 53′
Specification