Abstract: The invention concerns a rail vehicle (1) comprising a first power supply unit (5) which has at least one, preferably at least two, fuel cells (7), at least one fuel storage (8) and a first fuel cell power converter (10). The first fuel cell power converter (10) comprises a DC/DC converter (12) for each fuel cell (7), the DC/DC converters (12) preferably have outputs which are connected in parallel. The first power supply unit (5) is preferably arranged in a powerpack (2).

Abstract: A primary assembly, a positioning system and a method for determining a distance between a primary assembly and a secondary assembly are disclosed. In an embodiment, a primary assembly for a wireless power transmission system includes a first antenna and a second antenna, wherein the first antenna is configured to determine a distance between the first antenna and a circuit component of a secondary assembly for the wireless power transmission system, and wherein the second antenna is configured to determine a distance between the second antenna and the circuit component of the secondary assembly.

Abstract: A foreign object detector, a foreign object detection system and a method for operating the foreign object detector are disclosed. In an embodiment, a foreign object detector includes a conducting wire with a first section and a second section, a first node, a second node and an intermediate node, wherein the first section electrically connects the first node to the intermediate node and has a plurality of three or more vertical segments, and wherein the second section electrically connects the intermediate node to the second node and has a plurality of three or more horizontal segments.

Abstract: A primary assembly, a positioning system and a method for determining a distance between a primary assembly and a secondary assembly are disclosed. In an embodiment, a primary assembly for a wireless power transmission system includes a first antenna and a second antenna, wherein the first antenna is configured to determine a distance between the first antenna and a circuit component of a secondary assembly for the wireless power transmission system, and wherein the second antenna is configured to determine a distance between the second antenna and the circuit component of the secondary assembly.

Abstract: A foreign object detector, a foreign object detection system and a method for operating the foreign object detector are disclosed. In an embodiment, a foreign object detector includes a conducting wire with a first section and a second section, a first node, a second node and an intermediate node, wherein the first section electrically connects the first node to the intermediate node and has a plurality of three or more vertical segments, and wherein the second section electrically connects the intermediate node to the second node and has a plurality of three or more horizontal segments.

Abstract: An object protection for a wireless power transmission system and a method for operating a wireless power transmission system are disclosed. In an embodiment a wireless power transmission system includes a detection system configured to be sensitive to a material selected from the group consisting of a dielectric material and a metallic material and to monitor at least two parameters selected from the group consisting of a presence of an object, a distance of the object, a temperature of the object, a thermal behavior of the object, a presence of a metallic object, a presence of a dielectric object, and a coverage of the detection system with metallic or dielectric matter, wherein the detection system includes at least one or more sensors selected from the group consisting of an infrared sensor, an ultrasonic sensor, a capacitive sensor and an inductive sensor.

Abstract: A power supply system for wireless power transfer is disclosed. In an embodiment, a power supply system includes a pickup coil and a converter with a power output port, wherein the power supply system is configured to receive power from a (wireless power transfer) WPT system having a primary coil, and wherein the power supply system is insulated from the primary coil of the WPT system.