An electric vehicle control device includes a power conversion device, an auxiliary power source device, a charging device, an electricity storage device, and a controller. The power conversion device receives power supplied from an overhead line in an electrified section to perform power conversion, and supplies driving power to a vehicle driving motor. The controller connects the electricity storage device with the charging device and causes the charging device to charge the electricity storage device in the electrified section, and causes the electricity storage device to supply stored power of the electricity storage device to at least the power conversion device, instead of the power from the overhead line in a non-electrified section.

A rotor core includes magnet insertion holes embedding permanent magnets and arranged in a substantially U-shape, facing an outer circumferential surface of a rotor, and includes hollow portions formed at both side surface portions in a direction orthogonal to a magnetization direction of the permanent magnets embedded in the magnet insertion holes. A permanent magnet group for each pole having the plurality of permanent magnets includes vent holes passing through the rotor core in a direction of a rotating shaft, between one of the magnet insertion holes in which the permanent magnets are embedded and adjacent one of the magnet insertion holes or between the one of the magnet insertion holes and outer circumferential portions of the rotor core. The vent holes are arranged at positions to form the substantially U-shape together with the magnet insertion holes.

A rotor core includes magnet insertion holes embedding permanent magnets and arranged in a substantially U-shape, facing an outer circumferential surface of a rotor, and includes hollow portions formed at both side surface portions in a direction orthogonal to a magnetization direction of the permanent magnets embedded in the magnet insertion holes. A permanent magnet group for each pole having the plurality of permanent magnets includes vent holes passing through the rotor core in a direction of a rotating shaft, between one of the magnet insertion holes in which the permanent magnets are embedded and adjacent one of the magnet insertion holes or between the one of the magnet insertion holes and outer circumferential portions of the rotor core. The vent holes are arranged at positions to form the substantially U-shape together with the magnet insertion holes.

Provided is an electric vehicle in which the state of contact between an electric connection arm and an external power line can be stabilized during traveling of the electric vehicle. In the electric vehicle, when the free end of an electric connection arm contacts an external power line during traveling of the electric vehicle, a posture control device controls the posture of the vehicle body so that the rotation angle of the electric connection arm approaches a target rotation angle or a target rotation angle range.

Provided is an electric vehicle in which the state of contact between an electric connection arm and an external power line can be stabilized during traveling of the electric vehicle. In the electric vehicle, when the free end of an electric connection arm contacts an external power line during traveling of the electric vehicle, a posture control device controls the posture of the vehicle body so that the rotation angle of the electric connection arm approaches a target rotation angle or a target rotation angle range.

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).

A drive device for a vehicle, in particular a rail vehicle, includes a set of drive units each having at least one electric traction motor and a power generation unit which is provided for generating power for the traction motor, and a set of motor contactor units each being assigned to a traction motor. In order to provide a type of drive device which has a high availability in the event of a failure, has few structural elements and can be produced economically, at least one motor contactor unit includes at least one switching device which is connected between the power generation unit for the associated traction motor and a feed point.

A drive device for a vehicle, in particular a rail vehicle, includes a set of drive units each having at least one electric traction motor and a power generation unit which is provided for generating power for the traction motor, and a set of motor contactor units each being assigned to a traction motor. In order to provide a type of drive device which has a high availability in the event of a failure, has few structural elements and can be produced economically, at least one motor contactor unit includes at least one switching device which is connected between the power generation unit for the associated traction motor and a feed point.

According to one embodiment, an electric power conversion device includes an inverter which converts DC power into AC power and supplies the AC power to electric equipment of a railway vehicle, a battery capable of storing DC power, and a converter which converts the AC power into DC power and charges the battery. The battery supplies electric power to the inverter when the electric power is not supplied to the inverter from an external power source.

According to one embodiment, an electric power conversion device includes an inverter which converts DC power into AC power and supplies the AC power to electric equipment of a railway vehicle, a battery capable of storing DC power, and a converter which converts the AC power into DC power and charges the battery. The battery supplies electric power to the inverter when the electric power is not supplied to the inverter from an external power source.