Robert Boschgmbh

Tobias Werner

Reinhold Fiess

Michele Hirsch

Torsten Heidrich

Markus Kretschmer

Radoslav Rusanov

Christian Djonga

Matthias Wichmann

Stefan Mangold

Michael Heeb

Stefan Gaab

Jens Ehlermann

A particle sensor is described. The particle sensor includes a laser module having a laser, and a detector configured to detect thermal radiation. The particle sensor has an optical apparatus that is configured to focus laser light proceeding from the laser module into a first spot and is configured to focus thermal radiation proceeding from the first spot into a second spot, a radiation-sensitive surface of the detector being located in the second spot, or behind the second spot in the beam path of the thermal radiation focused onto the second spot.

Laser-induced incandescent particle sensor comprising a confocal arrangement of a laser spot and of a thermal radiation spot

A projection apparatus for data eyeglasses. The projection apparatus encompasses at least one light source for emitting a light beam; and at least one holographic element, disposed or disposable on an eyeglass lens of the data eyeglasses, for projecting an image onto a retina of a user of the data eyeglasses by deflecting and/or focusing the light beam onto a eye lens of the user.

Projection device for data eyeglasses, data eyeglasses, and method for operating a projection device for data eyeglasses

The present invention relates to a method () and a device for discharging an intermediate circuit () of a power supply network (), in particular a high-voltage network, wherein a consumer () can be connected to the power supply network (). A first () and a second () discharge circuit for discharging the intermediate circuit () are provided. In a first step, the intermediate circuit () is discharged at least partially by means of the first discharge circuit () and, in a subsequent second step (), the intermediate circuit () is further discharged () by means of the second discharge circuit ().

Method and device for discharging an intermediate circuit of a power supply network

The invention relates to a method for operating an electrical machine () controlled by an inverter (), wherein the inverter () comprises half-bridge branches (-U,-V,-W) having power components in the form of controllable power switching elements () and power diodes () respectively connected in parallel therewith, wherein each of the half-bridge branches (-U;-V;-W) is arranged on a separate semiconductor module (-U;-V;-W), which are arranged jointly on a baseplate (), wherein the phase currents (1_U, 1_V, 1_W) flowing through the half-bridge branches (-U,-V,-W), the voltages present at the power components and temperatures (t_Sens_U, t_Sens_V, t_Sens_W) on the semiconductor modules (-U,-V,-W) are determined, from the current (1_U; 1_V; 1_W) respectively flowing at a power component and from the voltage respectively present a power loss (P) is calculated for each of the power components, from the power losses (P) a relevant temperature swing (&#x394;t; &#x394;t_Sens) is determined for each of the power components and for temperature sensors (-U,-V,-W) serving to determine the temperatures on the semiconductor modules, a temperature (TempCooler) of the baseplate () is determined from the determined temperatures (t_Sens_U, t_Sens_V, t_Sens_W) on the semiconductor modules (--V,-W) and the determined temperature swings (&#x394;t_Sens) at the temperature sensors (-U,-V,-W), and a torque or a power of the electrical machine () is determined in a manner dependent on the determined temperature swings (&#x394;t) and the determined temperature (TempCooler) of the baseplate ().

Control device and method for operating an electrical machine driven by an inverter

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Fellbach, Germany

Tobias Werner