The invention relates to a 1st power supply arrangement for a rail vehicle. The rail vehicle includes at least one driven car with an intermediate circuit, a brake system and an energy supply system for supplying the brake system with operating energy. In order to improve the framework conditions to ensure reliable electrodynamic braking, the energy supply system contains at least two energy supply units, for the driven car, arranged at the intermediate circuit, for the redundant energy supply to the brake system.

An arrangement and a method for carrying out a self-load test on a rail vehicle which has a dual-mode drive system. A first drivetrain of the rail vehicle includes a diesel engine, which is coupled to an electric generator to generate electrical power. The generator is connected via a first converter to a DC link to transfer the power delivered by the generator as required into the DC link. A second drivetrain of the rail vehicle has an electrical line system, which is connected via a second converter to the DC link to transfer power from the line system as required into the DC link. During the self-load test of the diesel engine, the power delivered by the generator passes in part via a third converter to a braking resistor and in part via the second converter into the line system.

An apparatus comprises a power electronic energy conversion system comprising a first energy storage device configured to store DC energy and a first voltage converter configured to convert a second voltage from a remote power supply into a first charging voltage configured to charge the first energy storage device. The apparatus also includes a first controller configured to control the first voltage converter to convert the second voltage into the first charging voltage and to provide the first charging voltage to the first energy storage device during a charging mode of operation and communicate with a second controller located remotely from the power electronic energy conversion system to cause a second charging voltage to be provided to the first energy storage device during the charging mode of operation to rapidly charge the first energy storage device.

An apparatus comprises a power electronic energy conversion system comprising a first energy storage device configured to store DC energy and a first voltage converter configured to convert a second voltage from a remote power supply into a first charging voltage configured to charge the first energy storage device. The apparatus also includes a first controller configured to control the first voltage converter to convert the second voltage into the first charging voltage and to provide the first charging voltage to the first energy storage device during a charging mode of operation and communicate with a second controller located remotely from the power electronic energy conversion system to cause a second charging voltage to be provided to the first energy storage device during the charging mode of operation to rapidly charge the first energy storage device.

A transportation system for supersonic travel including a conduit containing an atmosphere that exhibits high aerodynamic tunneling performance, or high gas efficacy, and a vehicle designed to operate within the conduit. The vehicle traveling within the conduit along a support and guide structure that is complementary to a support and guidance system of the vehicle. The vehicle being propelled through the conduit via a propulsion system that includes contra-rotating propellers.

A power conversion device according to an embodiment includes a converter unit, and an inverter unit disposed to be adjacent to the converter unit in a railroad car running direction, the inverter unit being configured to convert the DC power outputted from the converter unit to AC power. First radiation fins are attached to a surface of a first heat receiving plate opposite to a surface on which the semiconductor switching devices are attached, and second radiation fins are attached to a surface of a second heat receiving plate opposite to a surface on which the semiconductor switching devices are attached. The first radiation fins and the second radiation fins facing one another are attached to the first heat receiving plate and the second heat receiving plate so that recessed portions of the first radiation fins and recessed portions the second radiation fins are aligned with one another.

A power conversion device according to an embodiment includes a converter unit, and an inverter unit disposed to be adjacent to the converter unit in a railroad car running direction, the inverter unit being configured to convert the DC power outputted from the converter unit to AC power. First radiation fins are attached to a surface of a first heat receiving plate opposite to a surface on which the semiconductor switching devices are attached, and second radiation fins are attached to a surface of a second heat receiving plate opposite to a surface on which the semiconductor switching devices are attached. The first radiation fins and the second radiation fins facing one another are attached to the first heat receiving plate and the second heat receiving plate so that recessed portions of the first radiation fins and recessed portions the second radiation fins are aligned with one another.

A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.

A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.

The invention relates to a method for measuring ageing of permanent magnets (4) of a synchronous machine (1) comprising a stator (2) and a rotor (3), said machine (1) being fitted with at least one angular position sensor (la) of the rotor (3), the rotor (3) comprising the permanent magnets (4) provided to move said rotor around the stator (2), the angular position sensor (1a) comprising at least two fixed magnetic induction measurement sensors (6) extending to an axial end (3a) of the rotor (3), facing and immediately adjacent to the axial edges (4a) of the permanent magnets (4), characterized in that said method consists of: j1) determining, while stopped or during a laden or unladen rotation phase of the synchronous machine (1), the maximum value of the magnetic induction using the magnetic induction measurement sensors (6) and the electronic unit; j2) comparing the measured maximum magnetic induction value with a reference value; and j3) if the maximum magnetic induction value is less than the reference value, presenting a difference determined with respect to said reference value in order to generate warning information S using the electronics unit and, if this is not the case, returning to step j1).