ebm-papst

About: ebm-papst is a company organization based out in Mulfingen, Germany. It is known for research contribution in the topics: Rotor (electric) & Stator. The organization has 572 authors who have published 736 publications receiving 3763 citations.

Fan having a printed circuit board

Abstract: A fan (20) to which the invention relates has: a motor with a stator and with a rotor (60) with at least one fan vane, at least one air inlet with an air inlet opening (102) for the inlet of air, at least one air outlet with an air outlet opening (32) for the outlet of air, and a printed circuit board (80) with at least one cutout, which printed circuit board (80) is arranged in the region of the air inlet in such a way that air can enter through the cutout into the fan (20), wherein motor electronics (88) are arranged on the printed circuit board (80).

Aktuatoreinheit für eine Kraftfahrzeug-Steer-by-Wire-Lenkeinrichtung

Abstract: Eine Aktuatoreinheit 1 fur eine Kraftfahrzeug-Steer-by-Wire-Lenkeinrichtung umfasst eine in einem Mantelrohr 17, 22 angeordnete, gegenuber diesem um ihre Langsachse drehbar gelagerte Lenkspindel 15, deren eines Ende zum drehmomentschlussigen Anschliesen eines Lenkrades ausgebildet ist, sowie einen Aktuator 2 mit einer durch den Aktuator 2 angetriebenen Aktuatorwelle 4, deren eines Ende drehmomentschlussig an die Lenkspindel 15 angeschlossen ist. Die Lenkspindel 15 ist starr an die in zwei Lagern 7, 8 gelagerte Aktuatorwelle 4 angeschlossen, wobei eines der beiden Lager 7 im Bereich des Anschlusses der Aktuatorwelle 4 an die Lenkspindel 15 angeordnet ist, und die Lenkspindel 15 infolge ihres starren Anschlusses an die Aktuatorwelle 4 aktuatorseitig uber die Aktuatorwelle 4 gelagert ist.

Electric motor stator comprising a temperature controller

Abstract: The invention relates to a stator (1) for an electric motor, particularly for an external rotor motor, having a stator sheet stack (2) provided with a stator winding (8) and having an interconnection arrangement (20) arranged on a face in the region of an end winding (9) of a stator winding (8) for electrically connecting winding wire ends of the stator winding (8) and connection wires (16) of a temperature controller (18) connected upstream of the stator winding (8). The interconnection arrangement (20) comprises an isolated switching disk (22) overlapping the region of the end winding (9), particularly in the form of a cap. The temperature controller (18) is kept integrated in the switching disk (22) such that it sits at the end winding side between the stator winding (8) and the switching disk (22) in a heat conducting contact with the stator winding (8).

Polyphase electric motor

Abstract: An electric motor has a stator (28) and a rotor (36′) separated therefrom by an air gap (39). The rotor has a plurality of salient poles with pole shoes (260A) facing toward the air gap, and a yoke (200). The pole shoes serve to generate a sinusoidal counter-EMF. Located between the yoke (200) and a pole shoe (260A) is a recess (266A) in which a permanent magnet (262A) is arranged. Adjacent to this recess (266A) on each side in the circumferential direction is a low-magnetic-conductivity region (266A′, 266A″) that is bounded by a retaining segment (270′) made of ferromagnetic material. The latter serves to connect the pole shoe mechanically to the yoke (200). A magnetic shunt (274′, 274″) extends from a source segment (264A′, 264A″) to a target region (270′″) of one of the retaining segments.

Method for operation of a two-phase electronically-commuted motor and motor for carrying out said method

Abstract: The invention relates to a two-phase electronically-commuted DC-motor, comprising a permanent magnetic rotor (36), terminals (28, 30) for connecting the motor to a power supply (22) and a stator (102) with a winding arrangement. The above has a first winding phase (52), provided with a first controllable semiconductor circuit (70), for control of the current in the first winding phase (52) and a second winding phase (54), provided with a second controllable semiconductor circuit (80), for control of the current in the second winding phase (54). The first and second semiconductor circuits (70, 80) together define a partial amount of semiconductor circuits for the electronic commutation. The motor also comprises a third controllable semiconductor circuit (50), arranged in a line from one of the terminals (28, 30) to the winding (52, 54), a device (74) for prevention of a reverse current, arranged in a common line to the semiconductor circuits (70, 80) of the partial amount and an arrangement for carrying out the following steps: depending on a desired operating condition of the motor (20), the third semiconductor circuit (50) is alternately blocked and activated without switching the semiconductor circuit from the partial amount currently in a conducting state off, such that, during operation, following a blocking of the third semiconductor circuit (50), a decaying ring current (i2, i3), flows through the semiconductor circuit from the partial amount currently in a conducting state and the other semiconductor circuit from the partial amount or a recovery diode (76, 81 ), provided therein and through the first and second winding phase (52, 54), generating a torque on the motor when the energy from the power supply (22) is temporarily interrupted.