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.

Electronically commutated electric motor for pulsed operation has a rotor and a stator with a stator coil fitted with electronic control elements switched on and off by a control signal

Abstract: An electronically commutated electric motor (10) has first (12) and second (14) stator coil branches Duration of pulse pauses in control signals is constant for supplying current to the first and second stator coil branches A control signal switches control elements (20,22) on and off when the stator coil branches are supplied with current An independent claim is also included for a method for controlling an electronically commutated electric motor

Speed controlling method and system for electronically commutated DC motors

Abstract: of EP0930698A system for speed control of DC motors, especially ones without collectors and controlled by rotor position sensors, has the motor current manipulated for speed changing in accordance with a control signal To manipulate the motor current, at least two different control procedures are used over the speed adjusting region of the motor With a certain transition speed or a transition value of the control signal corresponding to this, automatically passing over from one control procedure to the other one The magnitude of the respective transition speed of transition value of the control signal can be changed via an adjusting device

Fan or electric motor

Abstract: The utility model relates to a fan or electric motor, include: airtight electronics casing, the internal printed circuit board who contains electron device that is equipped with of electron sheath, printed circuit board will upper portion region and lower region are divided into to the electronics casing, and said lower region with the cooling wheel of arranging is bordered on to said printed circuit board axial, wherein said printed circuit board has at least one mesopore and several periphery hole or a periphery breach, so that said upper portion regional with establish through-flow connection between the lower region to the air can by said cooling wheel passes through at least one mesopore is followed upper portion is regional to inhale said lower region is and can pass through all marginal pores of several or periphery breach return said upper portion is regional, wherein forms the air return circuit, the air return circuit contain at least one along printed circuit board is equipped with the air current of electron device's surface flow. The fan or electric motor can effectively cool off the printed circuit board in the electronics casing.

Fan arrangement has control program that feeds pulsed d.c. current to motor in fan's working revolution rate range so essentially constant current exists in motor in working range

Abstract: The arrangement has a radial or diagonal fan with an associated d.c. drive motor (32), a digital motor control element (23,24) in the form of a microprocessor or microcontroler and a program associated with control element for controling the motor current. The control program feeds pulsed d.c. current (i2) to the motor in the fan's working revolution rate range so that an essentially constant current exists in the motor in the working range. Independent claims are also included for the following: an arrangement for feeding air to and extracting air from defined points in a building, vehicle, tent and so on, a method of regulating the current in a d.c. motor driving a fan, a method of monitoring a motor-drive fan for bearing damage or similar and a fan for implementing one or more of these methods.