Robert Boschgmbh

Christian Poddey

Frank Fischer

Nikolas Haberl

Michael Koerner

Volker Lurk

Tobias Stiefel

Guenther Riehl

Christian Meyer

Gerald Roos

Thomas Helming

Jean-Marc Ritt

Armin Stubner

Torsten Gmuend

Richard Vogt

Thomas Malich

Jan Van Goethem

Daniel Hofacker

Henrik Hessert

Christian King

Daniel Seebacher

The invention relates to an electrical machine (), in particular an electronically commutated EC motor, and to methods for producing an electrical machine () of this type having a pole pot (), in which a stator () and a rotor () are received, and a plug housing () with an integrated connector plug () is arranged axially on the open side of the pole pot (), wherein a rotor shaft () of the rotor () protrudes with a free end () axially out of the pole pot () into the plug housing (), and a magnetic signal generator () for rotational position detection is arranged at the free end (), which magnetic signal generator () interacts with a magnetic field sensor () which lies axially opposite it, wherein the magnetic field sensor () is configured as a wired single-part component and is fastened directly to the inner side () of the plug housing () without the use of a printed circuit board.

Electrical machine, and methods for producing an electrical machine

The invention relates to an electric motor having a stator and a rotor. The electric motor also comprises a controller, wherein the controller is connected to the stator and/or rotor, and is designed for applying current to the stator and/or rotor for rotating the rotor. According to the invention, the controller comprises a pulse width modulator designed for controlling a power output of the electric motor, in order to generate a predetermined number of different current application patterns. The current application patterns each represent a power output of the electric motor, and preferably comprise a time sequence of current pulses, each having a current pulse duration. The controller is designed for applying current to the electric motor according to at least two different current application patterns for actuating the electric motor during a time interval of actuation, such that a power output of the electric motor in the time-based average of the time interval of actuation, in particular from the beginning to the end of the time interval, is different from the power outputs represented by the current application patterns in the time interval of actuation.

Electric motor having a pulse width modulator

The invention relates to a method for detecting blocking or sluggishness (M, M) of a DC motor (). The method comprises the following steps: applying a voltage pulse (U=O) to the DC motor (); monitoring a motor current (I) flowing through the DC motor (); detecting a maximum value of the motor current (I) following the application of the voltage pulse; checking whether a change in the motor current (I) after reaching the maximum value exceeds a specific amount; signalling the blocking or the sluggishness (M, M) of the DC motor () if the change in the motor current (I) after reaching the maximum value exceeds the specific amount.

Method and device for detecting blocking or sluggishness of a DC motor

The invention relates to an electric motor assembly, particularly for driving a fan for an engine cooling system and/or an air conditioner of a motor vehicle, comprising an electric motor and a motor control device for activating the electric motor. According to the invention, the motor control device can be adjusted according to a characteristic curve () of the electric motor and/or of the fan, and thereby the power and/or rotational speed of the electric motor can be adjusted.

Electric motor assembly, method for operating an electric motor, and motor control device

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Oetigheim, Germany

Christian Poddey