DRIVE ENERGY SUPPLY IN RAIL VEHICLES

摘要

The invention relates to an arrangement for supplying drive energy to a rail vehicle, wherein the arrangement has the following: a first mains power converter (1) with an assigned smoothing capacitor (2), at least a first motor power converter (15) with an assigned smoothing capacitor (17), connecting lines (21a, 21b) between the first mains power converter smoothing capacitor and the first motor power converter smoothing capacitor, a second mains power converter (2) with an assigned smoothing capacitor (4), connecting lines (7a, 28) between the first mains power converter smoothing capacitor (3) and the second mains power converter smoothing capacitor (4), wherein the connecting lines between the two mains power converter smoothing capacitors form a loop together with the mains power converter smoothing capacitors. By virtue of the line connections, the loop has an inductance and forms an LC resonant circuit with the capacitors. The arrangement may also have one or more concentrated reactors which are inserted into the line connections of the loop in order to increase the inductance of the loop selectively. The arrangement has valves in the mains power converters, which valves are switched with a clocking frequency so that a pulse frequency is set at each mains power converter smoothing capacitor. The entire inductance of the loop is selected such that the resonant frequency of the loop is in a range of plus/minus 10% of twice the pulse frequency.