Producing electromagnetic fields for transferring electric energy to a vehicle
First Claim
1. A system for transferring electric energy to a vehicle, whereinthe system comprises an electric conductor arrangement for producing an alternating electromagnetic field and for thereby transferring the energy to the vehicle,the electric conductor arrangement comprises at least one alternating current line, wherein each alternating current line is adapted to carry one phase of an alternating electric current,the conductor arrangement comprises a plurality of consecutive segments, wherein the segments extend along a path of travel of the vehicle, each segment comprising one section of each of the at least one alternating current line,the system comprises ,a direct current supply line for supplying electric energy to the segments,each segment is connected to the supply line via at least one inverter which is adapted to invert a direct current carried by the supply line to an alternating current carried by the at least one alternating current line,a first inverter connects the supply line to a first end of the section(s) of a segment and a second inverter connects the supply line to a second end of the section(s) of the same segment or of the section(s) of a consecutive row of segments, wherein the first end and the second end are opposite ends of the segment or of the row of segments, andthe system is adapted to operate the first inverter and the second inverter at a predefined phase shift relative to each other, thereby producing an alternating voltage across the segment or row of segments, which alternating voltage causes a corresponding alternating current to flow through the segment or row of segments.
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Accused Products
Abstract
The invention is a system for transferring electric energy to a 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, wherein each alternating current line carries one phase of an alternating electric current. The conductor arrangement includes a plurality of consecutive segments, wherein 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. The system also includes a direct current supply line for supplying electric energy to the segments. Each segment is connected to the supply line via at least one inverter which inverts a direct current carried by the supply line to an alternating current carried by the at least one alternating current line.
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Citations
13 Claims
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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 electric conductor arrangement comprises at least one alternating current line, wherein each alternating current line is adapted to carry one phase of an alternating electric current, the conductor arrangement comprises a plurality of consecutive segments, wherein the segments extend along a path of travel of the vehicle, each segment comprising one section of each of the at least one alternating current line, the system comprises ,a direct current supply line for supplying electric energy to the segments, each segment is connected to the supply line via at least one inverter which is adapted to invert a direct current carried by the supply line to an alternating current carried by the at least one alternating current line, a first inverter connects the supply line to a first end of the section(s) of a segment and a second inverter connects the supply line to a second end of the section(s) of the same segment or of the section(s) of a consecutive row of segments, wherein the first end and the second end are opposite ends of the segment or of the row of segments, and the system is adapted to operate the first inverter and the second inverter at a predefined phase shift relative to each other, thereby producing an alternating voltage across the segment or row of segments, which alternating voltage causes a corresponding alternating current to flow through the segment or row of segments.
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7. A method for transferring electric energy to a vehicle, wherein
an electromagnetic field is produced by an electric conductor arrangement thereby transferring the electric energy to the vehicle, the electromagnetic field is produced by conducting an alternating current through at least one of consecutive segments of the conductor arrangement, wherein the segments extend along the track, the alternating current is limited to a specific segment or to a specific row of consecutive segments of the conductor arrangement by operating or not operating at least two of a plurality of inverters which connect, in each case, a direct current supply line to one interface between two consecutive segments in order to generate the electromagnetic field in a restricted region of the path of travel of the vehicle, a first inverter is operated which connects the supply line to a first end of a segment and a second inverter is operated which connects the supply line to a second end of the same segment or of a consecutive row of segments including the segment, wherein the first end and the second end are opposite ends of the segment or of the row of segments, the first inverter and the second inverter are operated at a predefined phase shift relative to each other thereby producing an alternating voltage across the segment or row of segments, which alternating voltage causes a corresponding alternating current to flow through the segment or row of segments.
Specification