Audi Ag

Sew-eurodrive Gmbh & Co Kg

Matthias Hartmann

Matthias Hauck

Wolfgang Hammel

Harald Wolf

Stefan Maiwald

Thomas Schuster

Mohamed Hammam

Nico Schobeß

Marek Lewandowski

Nico Schobess

Martin Doppelbauer

Torsten Epskamp

Georg Dobmeier

Volkmar Reinhardt

Patrick Winzer

Jens Wilhelm Wulf

An auxiliary heating system for motor vehicles driven by electric motors and a method for realizing an auxiliary heating function in a motor vehicle having an electric drivetrain.

Auxiliary heating system

A drive device, having a first electric machine operable as a generator and a second electric machine operable as a motor, which are electrically connected to one another, so that the second electric machine is operable using electric energy provided by the first electric machine, wherein an energy accumulator for temporarily storing electric energy is electrically connected to the first electric machine and the second electric machine. It is provided in this case that the first electric machine and the second electric machine are electrically directly connected to one another via an intermediate circuit, wherein the energy accumulator is electrically connected to the intermediate circuit via a switch arrangement both directly and also indirectly via a voltage converter. The disclosure furthermore relates to a method for operating a drive device.

Drive device and method for operating a drive device

A charging device and a method for charging an electrical energy storage device of a vehicle, with a DC converter for converting an input DC voltage into an output DC voltage. A winding of an electrical machine is part of the DC converter. The winding has at least two coils. A control unit is designed for the purpose of switching the at least two coils electrically in series for the charging of the electrical energy storage device. The at least two coils form an inductance of the DC converter.

Charging device and method for charging an electrical energy storage device of a vehicle, as well as motor vehicle

A method for determining the rotor position of a synchronous machine operated in field-oriented manner, which has an effective inductivity that is dependent on the rotor position,

Method for determining the rotor position of a synchronous machine operated in field-oriented manner

Growing community of inventors

Kösching, Germany

Matthias Hartmann