Robert Boschgmbh

Matthias Boesing

Tim Bruckhaus

Tobias Richter

Calin Purcarea

Matthias Heil

Rostislav Rogov

Daniel Schweiker

Alexander Ross

The invention relates to a circuit arrangement () for controlling a plurality of semiconductor switches connected in parallel, having an activation connection () and a deactivation connection (), and having a plurality of control connections (), each provided for connection to a control connection () of one of the plurality of semiconductor switches, wherein the activation connection () and the deactivation connection () are each connected to each of the plurality of control connections (), and wherein a circuit breaker () is provided between the activation connection () and at least one of the control connections (), furthermore having at least one detection and control arrangement which is designed to detect a current flow in the at least one of the control connections () and, if a short-circuit is detected on the basis of the current flow, to control the circuit breaker () to open.

Circuit arrangement for controlling a plurality of semiconductor switches connected in parallel

The present invention relates to a circuit arrangement () for operating an electrical machine () in a motor vehicle, having a first electrical drive train (-) in which a first battery direct converter (-) can be connected to the electrical machine () via a first switching device (-); a second electrical drive train (-) in which a second battery direct converter (-) can be connected to the electrical machine () via a second switching device (-); a third electrical drive train (-) in which a third battery direct converter (-) is connected to the electrical machine (), one converter connection of which can be connected to the second drive train (-) via a third switching device (-) and the other converter connection of which can be connected to the second drive train (-) via a fourth switching device (-); a DC voltage section () for providing a DC voltage for a vehicle electrical system, which DC voltage section is connected to the first, second and third drive trains (---) via a rectifier (---) in each case; and a charging section () for supplying a charging current to the first, second and third battery direct converters (---), which charging section is connected to the first drive train (-) and to the third drive train (-).

Circuit arrangement for operating an electrical machine in a motor vehicle with provision of a DC voltage

Growing community of inventors

Ludwigsburg, Germany

Matthias Boesing