Patent application number | Description | Published |
20080246466 | Sensor Device - The invention relates to a sensor device ( | 10-09-2008 |
20090039717 | TOOTHED MODULE FOR PRIMARY PARTS OF PERMANENT-MAGNET SYNCHRONOUS MOTORS - The invention relates to a module ( | 02-12-2009 |
20090140583 | Synchronous Linear Motor - The invention relates to a synchronous linear motor comprising a mobile primary part ( | 06-04-2009 |
20090174266 | ELECTRICAL MACHINE WITH A DAMPING WINDING - The aim of the invention is to reduce resonant overvoltages in electric motors. To achieve this, in an electric motor for an n-phase, symmetrical, electrical system comprising n working windings (Au, Av, Aw), which are assigned to the n phases (U, V, W) and are used to generate corresponding magnetic fluxes, a separate damper winding (Du, Dv, Dw) is allocated to each of the n working windings (Au, Av, Aw). The magnetic flux of the respective working winding flows through each damper winding. The n damper windings (Du, Dv, Dw) are connected in series and are short-circuited together. This permits the asymmetric parts of the system to be damped without affecting the working flux. | 07-09-2009 |
20090179505 | POLYGONAL ELECTRICAL MACHINE - The invention relates to a polygonal electric linear motor. In said motor, a primary part that is provided with transversal flux windings ( | 07-16-2009 |
20090206681 | PRIMARY PART AND LINEAR ELECTRICAL MACHINE WITH FORCE RIPPLE COMPENSATION - A linear electric motor including a primary part having a flux guiding element on the end faces of the primary part, a three-phase winding on the primary part that produces a first magnetic field and a permanent magnet on each end face that produces a second magnetic field that is superimposed on the first field to reduce force ripple is disclosed. The primary part has tooth modules and also end-tooth modules. The end-tooth modules have no winding, are located on the end face, and are smaller in volume than and shaped differently from the tooth modules. The primary part is separated from a secondary part by an air gap, and the end-tooth modules are separated from the secondary part by an additional air gap. | 08-20-2009 |
20090206684 | MACHINE WITH DIRECT DRIVE - A machine includes a moving part and a direct drive for moving the moving part. The direct drive includes a stator and an armature unit which interacts with the stator. A coupling device couples the armature unit to the moving part to allow a movement of the moving part in relation to the armature unit. The direct drive further includes a spacer device to maintain a distance between an active region of the stator and an active region of the armature unit, thereby defining the air gap between the stator and the armature unit. | 08-20-2009 |
20090256428 | Linear Motor with Force Ripple Compensation - The invention relates to a primary component ( | 10-15-2009 |
20090258770 | TOOL-CHANGING DEVICE HAVING A DIRECTLY DRIVEN STROKE AND PIVOTING ACTUATOR - A tool-changing device includes a tool gripper and a stroke and pivoting actuator for operating the tool gripper. The stroke and pivoting actuator can be driven by a first direct drive for producing a linear movement and by a second direct drive for producing a rotational movement, wherein the first and the second direct drives have a common rotor which serves as the stroke and pivoting actuator. | 10-15-2009 |
20090284253 | SENSOR DEVICE FOR AN ELECTRIC MACHINE - The aim of the invention is to create an inexpensive sensor system for a movable electric machine in order to determine positions, the sensor signal featuring zero crossings. Said aim is achieved by a sensor device ( | 11-19-2009 |
20090322162 | LINEAR MOTOR WITH FORCE RIPPLE COMPENSATION - The invention relates to a primary part ( | 12-31-2009 |
20100026104 | SHORT STROKE LINEAR MOTOR - The invention relates to a short stroke linear motor. In order to improve the dynamics of such a short stroke linear motor, the primary part ( | 02-04-2010 |
20100219702 | ELECTRIC MOTOR WITH SELF-COOLING - The moving parts of an electric motor are intended to be cooled more effectively and in a simple manner. For this purpose, the invention proposes an electric motor with a first motor part ( | 09-02-2010 |
20110133587 | BEARING CONCEPT FOR SEGMENT MOTORS - An electrical machine includes a stator coupled to a machine frame and constructed to produce a magnetic field. A rotor which is connected to a shaft magnetically interacts with the stator and is separated there from by an air gap which is arranged such that the magnetic field within the air gap is directed essentially parallel to the shaft axis during operation of the electrical machine. Arranged between the rotor and the stator is an axial bearing which absorbs attraction forces acting between the stator and the rotor in a direction of the shaft axis. An elastic coupling mechanically couples the stator to the machine frame and is made less stiff than the axial bearing with respect to a force acting in the direction of the shaft axis, and constructed such that a force acting on the rotor in the direction of the shaft axis is able to cause the stator to be translated with respect to the machine frame in the direction of the shaft axis. | 06-09-2011 |
20120193172 | CONVEYOR SYSTEM COMPRISING AN ELECTROMAGNETIC BRAKE - The invention relates to a conveyor system comprising a transport device ( | 08-02-2012 |
20140062247 | ELECTRIC MACHINE WITH BASE ELEMENT - An electric machine includes a primary section, a secondary section interacting with the primary section via an air gap during operation of the electric machine, and a first base element fastened to the secondary section. The base element includes a first pole shoe having a first end and a second end, with the second end of the first pole shoe facing the air gap, a second pole shoe having a first end and a second end, with the second end of the second pole shoe facing the air gap, and a permanent magnet disposed between the first pole shoe and the second pole shoe. The permanent magnet has a magnetization from the first pole shoe to the second pole shoe, and is formed by a matrix with a magnetically active material embedded therein. | 03-06-2014 |
20140167894 | ELECTRIC MACHINE HAVING A LOW-MASS DESIGN IN MAGNETICALLY ACTIVE PARTS - An electric machine includes a first magnetic pole with an arrangement of interposed magnetically active layers and magnetically inactive layers, and a second magnetic pole movable relative to the first magnetic pole and spaced from the first magnetic pole by a gap. An electrical conductor operates as a coupling element between an electrical circuit and a magnetic circuit. At an operating time, a common useful magnetic flux for electromechanical energy conversion flows through the magnetic circuit composed of the first magnetic pole, the gap and the second magnetic pole. The magnetically inactive layers have a lower average density than the magnetically active layers. A ratio (k) of the total volume of the magnetically active layers to the combined total volume of the magnetically active and inactive layers fulfills the condition 0.5≦k≦0.8 A method for producing an electric machine are also disclosed. | 06-19-2014 |