Valeo Siemens Eautomotive Germany Gmbh

Alexander Bucher

Alexander Pawellek

Harald Hofmann

Thomas Dürbaum

Daniel Kübrich

Panagiotis Mantzanas

Christian Hasenohr

Arnoud Smit

Philip Hubner

An electrical device for a converter has at least one capacitor having a first connection and a second connection, a first busbar and a second busbar is disclosed. A respective busbar has a greater extension along a transverse direction than along a longitudinal direction, and has a greater extension along the longitudinal direction than along a vertical direction. The respective busbar has a first surface and a second surface which are opposite one other with respect to the vertical direction. The device also has a first contact-connection device electrically conductively contact-connected to the first connection and via which the first connection is electrically conductively connected to the first busbar, and a second contact-connection device electrically conductively contact-connected to the second connection via which the second connection is electrically conductively connected to the second busbar. The busbars delimit a connection space in the vertical direction for connecting a semiconductor power unit.

Electric device for a converter, converter and arrangement with an electric machine and a converter

A control device () for an inverter () that feeds an electric machine (), wherein the control device () is configured to provide pulse-width modulated switching signals () for driving switching elements () of the inverter (), wherein the control device () is configured to determine a modulation type by means of which the pulse-width modulated switching signals () are generated depending on operating point information that describes an operating point defined by at least one operating parameter, and to use a first modulation type in at least one first operating region () and a second modulation type in another operating region ().

Control device, inverter, assembly having an inverter and an electrical machine, method for operating an inverter, and computer program

A control device () for an inverter () that feeds an electric machine (), wherein the control device () is configured to provide pulse-width modulated switching signals () with a carrier frequency to drive switching elements () of the inverter (), wherein the control device () is configured to determine the carrier frequency depending on operating point information that describes an operating point defined by a rotation speed and a torque of the electric machine () and, as the rotation speed increases and the magnitude of the torque falls, to increase the carrier frequency within an operating region () that extends within a rotation speed interval with a lower rotation speed limit () differing from zero and with an upper rotation speed limit () lying in a power-limiting operating region () or field-weakening operating region.

Control device, inverter, assembly having an inverter and an electric machine, method for operating an inverter and computer program

A control device () for an inverter () that feeds an electric machine (), wherein the control device () is configured to provide pulse-width-modulated switching signals () at a carrier frequency to drive switching elements () of the inverter (), wherein the control device () is configured to ascertain the carrier frequency within at least one operating range () depending on a piece of operating point information that describes an operating point defined by a rotation speed and a torque of the electric machine () in such a way that the carrier frequency is reduced within the at least one operating range () compared to a maximum carrier frequency operating point at which a maximum carrier frequency is specified in the operating range.

Inverter with switch control and a method of controlling an inverter

A power converter having a primary side and a secondary side galvanically isolated therefrom, includes a secondary-side functional unit operable in dependence on auxiliary information generated on the primary side, a primary-side voltage supply device arranged to provide a supply voltage, a power transmission device, which has a switching unit for switching the supply voltage and a transmission unit, which is set up to transmit the switched supply voltage to the secondary side, to convert the supply voltage into an operating voltage for the functional unit, a primary-side modulation device to provide a clock signal to the switching unit and to vary a frequency of the clock signal by the auxiliary information, and a secondary-side demodulation device arranged to generate at least one use signal representing the auxiliary information from a secondary voltage provided by the transmitter unit and to provide a use signal to the functional unit.

Power converter, vehicle and method of operating a power converter

A device for discharging a DC link capacitor includes a discharge device which is connected in parallel with the DC link capacitor and by which, on receipt of a discharge signal requesting discharge, a current flow can be generated which, in the presence of a first signal state of a control signal, has a lower current intensity than in the presence of a second signal state of the control signal; a voltage detection device by which a voltage signal describing a capacitor voltage dropping across the intermediate circuit capacitor can be generated; and a control device with a signal generating unit which is arranged to generate a reference signal whose value at the time of receipt of the discharge signal is dependent on the voltage signal and is reduced relative to the voltage signal, and a comparison unit which is arranged to compare the voltage signal with the reference signal.

Device and method for discharging a DC link capacitor, power converter and vehicle

Driver unit for a voltage-controlled switching element, includes a first output terminal for connecting a control terminal of the switching element, a second output terminal for connecting a further terminal of the switching element, an output stage section having a high-side terminal and a low-side terminal and being controllable to connect one of its terminals to the first output terminal of the driver unit based on a control signal representative switching the switching element, and a DC conversion section configured to supply the output stage section and to convert an input voltage into a positive first voltage between the high-side terminal and the second output terminal of the driver unit and into a positive second voltage between the second output terminal of the driver unit and the low-side terminal.

Growing community of inventors

Nuremberg, Germany

Alexander Bucher