Siemens Aktiengesellschaft

Siemens Mobility Gmbh

Bernd Laska

Mark-Matthias Bakran

Jan Weigel

Andreas Nagel

Andreas Fuchs

Eberhard Ulrich Krafft

Jürgen Böhmer

Stefan Hans Werner Schönewolf

Lars Loewenstein

Frank Jacobi Von Wangelin

Lars Löwenstein

Martin Helsper

Jurgen Bohmer

Stefan Hans Schonewolf

Stefan Hans Werner SCHÖNEWOLF

Lars LÖWENSTEIN

A modular power converter with wide-bandgap semiconductors, in particular SiC semiconductors. The modular power converter has at least two base units. The base units are connected together on the input side, and each base unit has an input circuit on the input side and an output circuit on the output side. The input circuit and the output circuit are each formed by the wide-bandgap semiconductors arranged in a B6-bridge circuit. An intermediate circuit capacitor is connected in parallel with the input circuit and the output circuit forming an intermediate circuit. The input circuits of the base units or a sub-quantity of the base units are arranged in a series circuit. At least one inductor is arranged between each pair of input circuits.

Modular power converter

A method is disclosed for braking electrically driven vehicles, in particular rail vehicles. In at least one embodiment, the behavior of the brake system is configured directly as a function of the system state, i.e. the operating conditions of the vehicle, such as for example the laden state of the vehicle, temperature of the engines and in particular of the magnets, as well as redundancy requirements, and therefore permit the fully functioning mechanical brake which is present in vehicles nowadays to be eliminated. The method of at least one embodiment for braking electrically driven vehicles which are equipped with spring-store-based friction brakes and whose motive drive is provided by way of permanently excited synchronous machines whose terminals are connected via switches to devices which generate a braking torque includes an open-loop or closed-loop controller being activated and the controller connecting the brake system of the engines which are present and the spring-store-based friction brakes into the circuit individually and successively as a function of the operating conditions of the vehicle and the required brake values.

Method for braking electrically driven vehicles

Growing community of inventors

Herzogenaurach, Germany

Bernd Laska