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.

Rooftop-mounted air-conditioning installation

Abstract: The invention relates to a rooftop-mounted air-conditioning installation (1), in particular for the roof of a bus, at least having a condenser unit (2) and an evaporator unit (3) which has an air-flow duct (5) with at least one air intake opening (6, 7) and one air discharge opening (8), wherein a heat exchanger (9) and a radial fan (10) which generates an air flow are arranged in the air-flow duct (5) between the air intake opening (6, 7) and the air discharge opening (8), and an axis of rotation (11) of a fan wheel (12) of the radial fan (10) is oriented parallel to an air flow main direction (S) which extends through the air-flow duct (5) from the at least one air intake opening (6, 7) through the heat exchanger (9) to the radial fan (10).

Novel position and speed estimator for PM single phase brushless D.C. motor drives: Validation with experiments

Abstract: A novel position and speed estimator for single phase permanent magnet brushless d.c. (PMBLDC) motor drives, based on flux integration and prior knowledge of Ψ PM (θ) is proposed here and an adequate correction algorithm is adopted in order to increase the robustness to noise and to reduce the sensitivity to accuracy of flux linkage estimation. A speed and current close loop control is employed based on the Hall signal and the motor is controlled at different speeds in order to validate the proposed estimation algorithm with satisfying results. The position correction effect is analyzed by examination of improvements in both position error and speed pulsations.

Elektromotor mit innenrotor und aussenstator

Abstract: Ein Elektromotor (100) weist auf: Einen Ausenstator (28); einen in dem Ausenstator (28) drehbeweglich angeordneten Innenrotor (150), welcher ein Blechpaket (200; 200'; 200'') aufweist, welches eine Mehrzahl von Rotorblechen (201, 202; 201', 201'') aufweist und in dem mindestens eine erste Ausnehmung (614) und mindestens eine zweite Ausnehmung (630) vorgesehen sind, wobei der ersten Ausnehmung (614) ein darin angeordneter Rotormagnet (224) zugeordnet ist, wobei der zweiten Ausnehmung (630) ein darin angeordnetes Verklemmelement (40) zugeordnet ist, wobei zwischen der ersten Ausnehmung (614) und der zweiten Ausnehmung (630) ein Klemmglied (692, 694) vorgesehen ist, und wobei das Verklemmelement (40) und die zweite Ausnehmung (630) dazu ausgebildet sind, ein Abstutzen des Verklemmelements (40) am Blechpaket (200; 200'; 200'') zu ermoglichen, und das Klemmglied (692, 694) in Richtung zum Rotormagneten (224) hin mit einer Kraft (F) zu beaufschlagen, wobei die zweite Ausnehmung (630) durch die Durchgangsoffnung (630) zur Aufnahme einer Welle (40) ausgebildet ist, und wobei das Verklemmelement (40) durch die Welle (40) ausgebildet ist.

Electronically commutated motor, has hold unit generating and storing over current signal in measuring resistor and conveying corresponding signal to output stage to counteract over-current

Abstract: The motor has an output stage (122) and a measuring resistor (242) detecting measuring value for the current flowing into the stage. An over-current measuring unit (152) evaluates the valve and detects the current exceeding a given threshold value. A hold unit generates and stores an over current signal in the measuring resistor and conveys a corresponding signal to the stage to counteract the over-current. An independent claim is also included for a method of controlling an electronically commutated motor.

Stator of an external-rotor motor with protective wire connection element

Abstract: of EP1154546A stator (1) for an external rotor motor has a stack (2) of stator metal plates and stator coils in grooves on the stack to form stator end windings. A rotor shaft (11) stretches through a centred shaft opening (10) that forms a tubular front insulating shaft (12) serving as seating (13) for a bearing (15) for the rotor shaft. The front insulating shaft insulates the stator coils against the stack of stator metal plates.