Abstract: 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.

Abstract: An electrical energy production system includes a diesel engine that is functionally coupled to a three-phase current generator device, the generator device is functionally coupled to an electrical intermediate circuit, the electrical intermediate circuit is functionally coupled to an electric consumer device and a passive rectifier and a pulse rectifier are connected in parallel in the intermediate circuit. An electrical intermediate circuit voltage of the electrical intermediate circuit is provided, in a defined manner, from the passive rectifier and the pulse rectifier. A set point or nominal value of the electrical intermediate circuit voltage is supplied to the pulse rectifier and the pulse rectifier provides a defined portion of the electrical intermediate circuit voltage. A method for operating an electrical energy production system and a computer program product are also provided.