Device and control procedure for recovery of kinetic energy in railway systems
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United States of America Patent
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Apr 3, 2012
Grant Date -
Mar 11, 2010
app pub date -
Sep 10, 2009
filing date -
Sep 11, 2008
priority date (Note) -
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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).
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