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.

Electric motor, and device for generating a signal for controlling the same

Abstract: An electric motor, having a stator ( 465 ), a rotor ( 470 ), and an apparatus for evaluating a signal provided for controlling said motor ( 110 ), comprises a receiving unit ( 430, 440 ) for receiving a control signal (PWM_mod), which is a pulse width modulated signal (PWM) onto which a data signal (DIR, DATA) is modulated. An evaluation unit ( 440 ) is provided for evaluating the modulated control signal (PWM_mod). The unit is configured to extract, from the modulated control signal (PWM_mod), data provided for operation of the motor ( 110 ). The control apparatus includes a signal generator ( 450 ) configured to generate, on the basis of the extracted or ascertained data provided for operation of the motor ( 110 ), at least one control signal for the motor ( 110 ), such as a commanded direction of rotation. Piggybacking other control data onto the PWM power level signal reduces hardware investment, by permitting omission of a signal lead which would otherwise be required in the motor structure.

Data transfer for an electric motor

Abstract: The data transmission arrangement has an electric motor (10) with a stator (20) and a rotor (22), where the rotor and the stator are assigned to a motor control unit and a supply line (31). A signal sequence-receiving device (53) is also provided in the data transmission arrangement. A storage element is provided for storing the energy of the supply line, in order to allow the operation of the signal sequence-receiving device. An independent claim is also included for a method for transmitting a motor parameter by a control device to an electric motor by a supply line.

Fan with active magnetic bearing

Abstract: A fan (100) has an electronically commutated drive motor (ECM 52) with a stator (50) connected to a bearing tube (54) and a rotor (22) on a shaft (34). The shaft (34) is journaled in the tube (54) using passive radial magnetic bearings (16, 18) to minimize friction and wear, is axially displaceable with respect to the tube (54), and is drivingly connected to a rotor magnet (44) forming a first magnetic yoke (46). A second magnetic yoke (27) is connected to the shaft (34), and has an inner surface (59) defining a substantially cylindrical air gap (57) through which, during operation, a radial magnetic flux (55′) extends. A plunger coil (64) extends into the air gap (57) and is mechanically connected to the tube (54) so that, upon axial displacement of the plunger coil (64), the position of the shaft (34) with respect to the tube (54) changes.

Electric Motor And Method Of Controllling Said Motor

Abstract: The invention relates to a sensorless electric motor and a method of controlling such an electric motor, which motor comprises a permanently magnetic rotor, a stator having at least one winding, and a power stage for influencing the current flowing through the winding. As a function of a predetermined commutation duration (T_K), a commutation period is defined, during which period the direction of the magnetic field generated by current flow through the winding is not modified, during which period a commutation completion operation (107) and a commutation initiation operation (109) take place, and which period starts at a first commutation instant (t_KN) and ends at a second commutation instant (t_KN+1); preferably, commutation timing is adjusted, based upon a value of induced voltage picked up at a currently non-energized one of the winding strands, during a plateau portion (108) of a winding voltage trace, located temporally between commutation instants.

Vibration damping support

Abstract: Die Erfindung betrifft eine schwingungsdampfende Lagerung (1) eines Motors auf einem Untergrund (2), mit einer motorseitigen Halterung (3), einer am Untergrund angeordneten Aufnahme (4) und einem elastischen Element (5), das einen Hohlraum aufweist und zwischen der Halterung (3) und der Aufnahme (4) angeordnet ist, wobei der Hohlraum des Elements (5) an seinem der Aufnahme (4) zugewandten Endabschnitt (9) geschlossen und ein Endabschnitt (9) des Elements (5) formschlussig in einem Sockel (11) des Untergrunds (2) gehalten ist. The invention relates to a vibration-damping mounting (1) of a motor on a base (2), with a motor-side bracket (3), one arranged on the substrate holder (4) and an elastic element (5) having a cavity and between the retainer (3) and the receptacle (4) is arranged, wherein the cavity of the element (5) at its said receptacle (4) facing end section (9) is closed and an end portion (9) of the element (5) in a form-fitting manner in a socket (11 ) of the substrate (2) is held.