Audi Ag

Stephan Brüske

Andreas Apelsmeier

Maximilian Schiedermeier

Benjamin Söhnle

Jochen Heusel

Thomas Baumeister

Simon Haussmann

A system comprises a control unit for operating an electrical circuit arrangement connected to an electrical machine, wherein the electrical circuit arrangement is designed to energize a stator of the electrical machine, the control unit being connectable to at least one further circuit arrangement which is designed to energize a rotor of the electrical machine, the control unit being set up to operate the further circuit arrangement.

Control unit, control circuit and motor vehicle

An inverter for an electric machine is provided. The electric machine includes a rotor and a stator. The inverter includes a DC/AC converter and a DC/DC converter. The DC/AC converter includes at least one chip of silicon carbide having at least one MOSFET. The DC/DC converter includes at least one chip of silicon having at least one IGBT. The DC/DC converter is connectible to a first one of the rotor or the stator of the electric machine and the DC/AC converter is connectible to a second one of the rotor or the stator of the electric machine.

Inverter including DC/AC converter and DC/DC converter connectible to rotor and stator included in electric machine

A method and a device for controlling the active discharge of a high-voltage intermediate circuit via a discharge resistor.

Control of the active discharge of a high-voltage intermediate circuit

The present disclosure relates to a circuit device for demagnetizing the rotor of an externally excited synchronous machine and to a method for operating the circuit device.

Demagnetization of the rotor of an externally excited synchronous machine

A method and a device for the diagnosis of the active discharge of a HV intermediate circuit of an electric vehicle.

Diagnosis of the active discharge of a HV intermediate circuit

A converter device for an electrical machine, including a switch with a plurality of switching elements to generate a multiphase alternating current for the electrical machine and a plurality of phase conductors for conducting an alternating current generated in each case by the switch to the electrical machine, wherein a number of first phase conductors that is one less in number than the total number of phase conductors are coordinated with a current measuring means, and a control device is provided, which is designed to determine a calculated value describing a current along the second phase conductor from first measured values of the current measuring means, wherein the control device is designed to check the plausibility of the calculated value on the basis at least one second measured value of a short circuit detecting device coordinated with a switching element.

Converter device for an electrical machine, motor vehicle, and method for operating a converter device

A method for adjusting a modulation of at least one electrical operating parameter of at least one component of a power electronics unit, wherein an electric machine of a vehicle is operated by the power electronics unit, wherein the modulation is adjusted by a user of the vehicle.

Method for adjusting a power electronics unit

An electronics device with at least one component to be cooled, a cooling element for cooling the component to be cooled, at least one power supply line, and a respective current sensor for recording a current strength of a current flowing through the respective power supply line, wherein the cooling element has a recess, in which the current sensor engages or in which the current sensor is arranged.

Growing community of inventors

Kiel, Germany

Stephan Brüske