Abstract: A method performed by a control system of a power electronics converter. A first part of a grid-side current controller runs a first feedback control algorithm having a first control cycle time and includes at least proportional control using a proportional gain. A third part of the controller runs a third feedback control algorithm having the first control cycle time and acting on an output from the first control algorithm after SOA limits have been applied and includes counteracting the proportional control of the first feedback control algorithm. A second part of the controller runs a second feedback control algorithm having a second control cycle time, less than the first control cycle time, and acting on an output from the third control algorithm with the same polarity as the first control algorithm and includes proportional control using the proportional gain.

Abstract: When it is determined that a charge controllable vehicle and a charge uncontrollable vehicle coexist are connected to a plurality of charging stations, available power X is distributed and supplied to the charge controllable vehicle or the charge uncontrollable vehicle so that total power derived from the charge controllable vehicle and the charge uncontrollable vehicle does not exceed the available power X of a power supply unit, and the available power X is distributed as time division and supplied to the charge controllable vehicle and the charge uncontrollable vehicle.

Abstract: A device for connecting at least one single-phase power supply line which, in particular, feeds the overhead line of a railroad track, to a three-phase power supply network. A primary side of a transformer is connected to the power supply network and a secondary side is connected to the single-phase power supply line and to a ground connection. A symmetry device is connected to a phase of the transformer, to the ground connection, and to the single-phase power supply line.

Abstract: A device for connecting at least one single-phase power supply line which, in particular, feeds the overhead line of a railroad track, to a three-phase power supply network. A primary side of a transformer is connected to the power supply network and a secondary side is connected to the single-phase power supply line and to a ground connection. A symmetry device is connected to a phase of the transformer, to the ground connection, and to the single-phase power supply line.

Abstract: A control device for an electric train formed of plural coupled carriages each of which receive power from an overhead power line via a collector, wherein each carriage is provided with a power converter for converting power from the overhead line to a suitable level for a load within the respective carriage. Each carriage also includes an auxiliary power supply device having an input coupled to the output of the power converter of the another carriage and an output coupled to an input of the power converter of the same carriage, so that if the power level from the overhead line to one carriage falls below a predetermined value, the power converter of that carriage is supplied with power from the power converter of another carriage through the intermediary of the auxiliary power supply device of the same carriage.