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.

Method for controlling at least two fans

Abstract: A control device and a method for controlling a system consisting of a number of at least two fans (1) and/or fan groups for generating a defined setpoint value (VG,setpoint, ΔpG,setpoint), wherein, by changing the operating points of at least one fan (1) depending on which setpoint value is fixedly predetermined, at least one of the fans (1) is brought to an optimal operating point and thereby the efficiency ηG of the system is increased.

Assembly for the vibration free fixation of an electrical motor bearing

Abstract: Die vorliegende Erfindung betrifft eine Anordnung zur schwingungsisolierenden Lagerung eines Elektromotors (5) an einem Halteteil uber mindestens ein umfangsgemas zwischen Elektromotor (5) und Halteteil (3) angeordnetes Isolationselement (4). The present invention relates to an arrangement for the vibration-isolating mounting of an electric motor (5) on a holding part via at least one circumferentially between the electric motor (5) and retaining member (3) disposed insulating member (4). Dieses Isolationselement (4) bewirkt eine erste Eigenfrequenz der Drehschwingung des Gesamtsystems, die kleiner, insbesondere deutlich kleiner ist, als die erste Anregungsfrequenz des Elektromotors (5). This insulation element (4) causes a first natural frequency of the torsional vibration of the overall system, which is smaller, particularly significantly smaller, than the first excitation frequency of the electric motor (5).

Electric motor having improved motor cooling for driving a fan

Abstract: The disclosure relates to an electric motor, in particular configured as an internal rotor motor, for driving a fan having a stator, a rotor, a drive shaft, motor electronics disposed on a first axial side of the stator, a first cooling impeller which is associated with the motor electronics and disposed on the first axial side of the stator on the drive shaft and generates a first cooling air flow at least to the motor electronics during operation of the electric motor, and a second cooling impeller which is disposed immediately adjacent the stator on a second axial side of the stator opposite the first axial side and has impeller blades that generate a second cooling air flow at least in the axial direction along the stator during operation of the electric motor.

Ventilation Unit For Refrigeration Plants

Abstract: A ventilation unit (1) designed for installation and use at a refrigeration plant has a fan and a heat exchanger (3) arranged in series with the fan. The fan is designed and positioned with regard to the heat exchanger (3) so as it delivers, in operation, an air volume flow through the heat exchanger (3) and out from the ventilation unit. The fan is designed as a diagonal fan (2). The diagonal fan axially draws in the air volume flow during operation and blows it out diagonally at an angle relative to its axis of rotation (RA).

Apparatus for avoiding harmful bearing currents

Abstract: The present invention relates to an apparatus for reducing and/or avoiding harmful bearing currents in an electrical machine (M) such as preferably a three-phase EC motor (M), with a rotor (2) and a stator (3) which is constructed in an insulated manner, wherein at least one outer bearing ring (4a) and one inner bearing ring (4b) are provided between rotor (2) and stator (3), comprising connecting electronics (10) for connecting the motor (M), wherein the stator (3) is connected by means of an electrical connection (20) to a high-frequency electronics potential (11) which differs from the earth potential (UE) and is stable with respect to the latter at a potential tap (20a) of the connecting electronics (10).