System and method for transferring electric energy to a vehicle using constant current operation of segments of a conductor arrangement

摘要

A system for transferring electric energy to a vehicle such as a track bound vehicle or road automobile. The system includes an electric conductor arrangement which produces an alternating electromagnetic field, transfers electromagnetic energy to the vehicle and includes a plurality of segments. Each segment extends along the vehicle path of travel and includes one line for each phase of alternating current carried by the segment. The system includes a current supply for conducting electric energy to the segments which are electrically connected in parallel. At least one segment is coupled to the current supply via a constant current source. Each constant current source includes one or more inductances and one or more capacitances, the inductances and capacitances being adapted to each other and the input side of the constant current source so that a constant current is output to the output side.

主权项

1. A system for transferring electric energy to a vehicle, comprising:
an electric conductor arrangement for producing an alternating electromagnetic field and for thereby transferring electromagnetic energy to the vehicle, wherein, the conductor arrangement comprises: a plurality of segments electrically connected in parallel to each other and to a current supply, wherein the segments extend in a direction of travel of the vehicle and at least one of the segments is coupled to the current supply via an associated constant current source to keep an alternating electric current through the segment constant, wherein, each constant current source comprises at least a first inductance and at least a first capacitance, the inductance and the capacitance being adapted to each other and to a voltage at an input side of the constant current source so that a desired constant current is output to an output side of the constant current source, wherein, the first inductance is arranged in a line of the constant current source which connects the input side with the output side and at least one junction of the line is connected with the first capacitance, and the first inductance and the first capacitance as well as a second inductance, which is formed at least partly by an inherent inductance of the segment, are adapted to each other and to any additional capacitance in the segment so that the segment can be operated at a corresponding resonance frequency and the reactive power produced by the segment is essentially zero.