Transferring electric energy to a vehicle, using a system which comprises consecutive segments for energy transfer

摘要

Disclosed is a system for transferring electric energy to a vehicle, in particular to a track bound vehicle such as a light rail vehicle. The system includes an electric conductor arrangement for producing an alternating electromagnetic field and for thereby transferring the energy to the vehicle. The electric conductor arrangement includes at least one alternating current line. Each alternating current line carries one phase of an alternating electric current. The conductor arrangement includes a plurality of consecutive segments. The segments extend along the path of travel of the, vehicle. Each segment includes one section of each of the at least one alternating current line.

主权项

1. A system for transferring electric energy to a vehicle, wherein
the system comprises an electric conductor arrangement for producing an alternating electromagnetic field and for thereby transferring the energy to the vehicle, the conductor arrangement comprises a plurality of consecutive segments, wherein the segments extend along the path of travel of the vehicle, the system comprises a direct current supply for conducting electric energy to the segments, wherein the direct current supply comprises a first and a second direct current line, the first direct current line being operated at a different electric potential than the second direct current line, each segment is connected to the direct current supply via at least one inverter which is adapted to invert a direct current carried by the direct current supply to an alternating current carried by the segment, the system comprises a modulation device for modulating the electric potential of at least one of the first and second direct current line using a predetermined modulation frequency, thereby producing a direct voltage having an overlaid voltage alternating with the modulation frequency, and at least some of the inverters comprise a transformer having a primary and a secondary winding, wherein the primary winding is connected to the first or second direct current line, so that the direct current flows through the primary winding and wherein the secondary winding is connected to a power supply arrangement adapted to provide electric energy for operating the inverter.