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.

Circuit assembly for intermediate circuit balancing

Abstract: The disclosure relates to a circuit assembly (1) for intermediate circuit balancing of an intermediate circuit voltage UZK of a DC intermediate circuit fed by an alternating mains voltage UN for supplying a voltage to one or more devices, comprising a. a voltage divider (SP) configurable in terms of the voltage divider ratio and consisting of a plurality of electric two-terminal devices (R1, R2, . . . , R6) by which the intermediate circuit voltage UZK is divided into voltage portions at each two-terminal device, b. at least one first intermediate circuit capacitor (C1) chargeable to a first portion UZK,1 of the intermediate circuit voltage UZK, c. at least one second intermediate circuit capacitor (C2) chargeable to a second portion UZK,2 of the intermediate circuit voltage UZK.

Method for monitoring rolling bearings

Abstract: The present disclosure relates to a method and an apparatus for monitoring a rolling bearing of an electric motor, wherein the rolling bearing forms a capacitive parasitic antenna, having the following steps of: a capturing the electromagnetic spectrum emitted by the parasitic antenna in a manner triggered by spark formation in the rolling bearing over a respectively defined period t during operation of the electric motor; b evaluating the number N of electromagnetic pulses (a, b, c, d, e) received in the spectrum and the amplitude A of said pulses; c capturing the change in the number N of electromagnetic pulses (a, b, c, d, e) and/or the amplitude A of said pulses, and d determining whether the increase in the number N and/or in the amplitudes A of the electromagnetic pulses (a, b, c, d, e) increases in a non-linear manner with time

Dehumidifying apparatus for a housing

Abstract: The invention relates to a dehumidifying device for a housing (10), particularly an electronics housing of an electric motor, comprising a a wall (2) dehumidifying chamber (3), within the hygroscopic material (4) is accommodated, which is designed (moisture from the dehumidifying 3 to bind), the wall (2) of the dehumidifying chamber (3) at least one inner vapor-permeable membrane (5) (with a receiving interior 6) of the housing (10) in operative connection can be brought, and an outer membrane (7) having engageable with the outside (8) of the housing (10) in operative connection with the inner and outer membrane (5, 7) towards each vapor-permeable in at least, in which an air moisture transport out of the receiving space (6) of the housing (10) can be ensured by the dehumidifying chamber (3) in an outer region (8).

Method for checking a time-discrete signal value of a sensor for freedom from errors

Abstract: The invention relates to a method for checking a time-discrete signal value of a sensor for freedom from errors, wherein the signal value from the sensor is transformed by two different evaluating devices of an electronics system into a first measured value and a second measured value, wherein the first and the second measured values are transmitted by the electronics system to a control system and the control system calculates a first control signal from the first measured value and in parallel therewith a second control signal from the second measured value, wherein the control system comprises a comparator which compares the first control signal and the second control signal to verify the identity thereof.