Abstract: An electric machine is designed as a disk armature having a secondary part that is rotationally supported about an axis of rotation relative to a primary part. The secondary part has a magnetic disk, which, on its axial end faces, has a circumferentially extending series of alternating, oppositely magnetized, permanent magnetic poles. The magnetic poles interact magnetically with a winding provided on the primary part across at least one air gap disposed axially between the primary part and the secondary part. To sense the position of the secondary part relative to the primary part, a position transducer is provided having at least one magnetic field sensor for detecting the magnetic poles. The magnetic field sensor is located on the primary part in a region on the stator situated radially outside of the magnetic disk.

Abstract: In a method for manufacturing an electric drive, an electric motor having a stator, a drive electronics for the winding of the electric motor, and a housing are provided. Before being installed in the housing, the drive electronics and the stator are positioned against each other. Connection points of the drive electronics are electrically connected to the winding of the electric motor. A sealing compound is then brought into contact with the stator and the drive electronics and thereby joins the drive electronics to the stator. The sealing compound is subsequently solidified. Thus, the formed subassembly made up of the stator, the drive electronics and the sealing compound is installed in the interior cavity of the housing.

Abstract: A device for actuating components of a motor vehicle has at least two electric motors, each of which has at least one stator unit and one rotor unit, and a control device for the electric motors, which has at least one logic device and one power device. The control device is fixedly connected to at least one component of both electric motors.

Abstract: Electric machines operating according to the reluctance principle have toothed air gap surfaces between their moving and fixed parts. The magnetizability of these teeth directly affects the performance of the machine. According to the invention, the teeth projecting into the air gap consist of a material which in relation to the remaining soft-magnetic body presents better magnetizability and/or greater magnetic saturation flux density. This material is preferably a grain-oriented electric steel sheet or a cobalt/iron alloy. Alternatively or in addition thereto, the soft-magnetic body in which the conductor coils are positioned can be made entirely of a grain-oriented material by appropriate segmentation. In this case, every other pole is non-spooled and consists of two halves separated by a non-magnetic holding element. The use of steel sheets rolled at an angle also contributes to the improved utilization of space and material in rotating machines, especially in transverse flux machines.

Abstract: A damping device for damping speed irregularities of a rotating shaft includes an armature having at least one armature part made of a non-ferromagnetic, electrically conductive material. An exciter configured to permeate the armature part in at least some regions with a magnetic flux. The armature, together with the at least one armature part, is movably supported relative to the exciter, transversely to the direction of the magnetic flux. In one region permeated by the magnetic flux in a position of normal use, the armature part has at least one opening in which a ferromagnetic flux-guide member is located.

Abstract: In a method for operating an EC motor, position-measurement signals are recorded by a position-measuring device, and, on the basis of the position-measurement signals, commutation instants are determined, at which the current supply to the EC motor is commutated. At least one correction value for at least one position-measurement error contained in the position-measurement signals is ascertained and stored. To compensate for the at least one position-measurement error, the correction value is considered when determining the commutation instants.

Abstract: An electronic device has at least one semiconductor chip, which has mutually opposing contact sides, of which one first contact side is electroconductively surface-bonded via a first, solid soldering-agent layer to at least one first metallic conductor part. The semiconductor chip is electroconductively surface-bonded on its second contact side facing opposite the first contact side via a second soldering-agent layer to at least one second metallic conductor part. The softening temperature of the second soldering-agent layer is adapted to an operating temperature that occurs in this soldering-agent layer during operation of the device in such a way that the second soldering-agent layer is doughy or liquid at the operating temperature. The second soldering-agent layer is laterally bounded by a flow-off protection device.

Abstract: An electromagnetic friction clutch has at least two clutch parts that are mounted so as to be rotatable relative to each other and movable toward and away from each other and that touch each other with a contact force in the position of use. The clutch parts are located in a magnetic circuit, which is guided in the clutch parts in a soft magnetic material in sheet form. Positioned in the magnetic circuit is an electromagnet having a soft magnetic core and a coil. The magnetic circuit has air gaps between the soft magnetic core and at least one of the clutch parts. The flux density in the magnetic circuit, and thus the contact force, is modifiable via the current applied to the coil. The magnetic flux changes at at least ten flux crossover points one after the other in the direction of flow between the clutch parts. The cross section of the magnetic flux in at least one air gap is at least five times greater than the smallest flux cross section in the soft magnetic material.

Abstract: A power stage (1) for driving an electric machine comprising at least two semiconductor switches (2a, 2a′, 2a″, 2b, 2b′, 2b″) designed as semiconductor chips, which are connected by at least one bridge conductor (3, 3′, 3″) to form a half bridge. The semiconductor switches (2a, 2a′, 2a″, 2b, 2b′, 2b″) area contact with each one of their contact surfaces (4a, 4b) an electric conductor track (5a, 5b). The conductor tracks (5a, 5b) and the at least one bridge conductor (3, 3′, 3″) are connected to the electric connection terminals for the machine and/or the power supply. The at least one bridge conductor (3, 3′, 3″) is designed as conductor element which is arranged in at least one plane which is partially disposed approximately parallel to the extension plane of at least one of the conductor tracks (5a, 5b).

Abstract: In electric machines, core losses limit, at high fundamental frequency, the permissible full-load power. The aim of the invention is to develop a design which enables a high power density at high magnetic reversal frequencies and which is easy to produce. To this end, the primary part comprises coils which, for the majority of their length, run in the direction of movement and which are surrounded in this area on three sides by soft magnetic material. In the direction of movement, at least two coils are arranged one behind the other. Coils of different phase are arranged perpendicular to the direction of movement inside different running tracks. In the secondary part, at least two oppositely magnetized hard magnets with three collector segments, which are flatly adjacent in a manner that is perpendicular to the direction of movement, form magnet poles having a high flux concentration.

Abstract: Electric machines operating according to the reluctance principle have toothed air gap surfaces between their moving and fixed parts. The magnetizability of these teeth directly affects the performance of the machine. According to the invention, the teeth projecting into the air gap consist of a material which in relation to the remaining soft-magnetic body presents better magnetizability and/or greater magnetic saturation flux density. This material is preferably a grain-oriented electric steel sheet or a cobalt/iron alloy. Alternatively or in addition thereto, the soft-magnetic body in which the conductor coils are positioned can be made entirely of a grain-oriented material by appropriate segmentation. In this case, every other pole is non-spooled and consists of two halves separated by a non-magnetic holding element. The use of steel sheets rolled at an angle also contributes to the improved utilization of space and material in rotating machines, especially in transverse flux machines.

Abstract: Electric machines with a radial air gap field, but in particular low power EC external rotors, have advantageously individually spooled poles. The trapezoidal cross section of the slot and small slot openings towards the air gap make the realization of a compact winding difficult. In accordance with the invention, the body of the electric machine which form the individual poles is assembled from soft magnetic segments. The segments are preferably made of axially stacked sheet metal that have indentations on the edges forming the wall of the slot. The indentations enables the conductor wire to be guided in a precise manner during winding of the individual poles. At the air gap, pole shoes cover almost the entire perimeter and at the opposite end, they form adjacent pole segments, preferably with recesses, into which retention pins are axially inserted after mounting to ensure radial fixation.

Abstract: Known turn-to-turn windings with overlapping conductor lanes either only insufficiently use the groove space or are difficult to produce. In addition, uniform distribution of current density is not achieved in the winding overhang space. The disclosed multiple phase conductor layers are made of identical conductor lanes located in the groove space at the same distance from the air gap surface. The conductor layers stacked in the grooves complement each other in the use of the winding overhang space in that they lead the current in opposite directions across the width of the groove. Uniform distribution of current density and high space utilization are achieved in that the layered winding overhangs are offset in relation to the layers in the grooves in direction of the groove depth by one half the height of a layer.

Abstract: The invention concerns a permanently excited transverse flux machine which requires only one permanent magnet segment per phase and per magnetic circuit. The magnetic flux generated by a permanent magnet segment (3) flows alternately through the soft magnetic body on two conductor rings (7) of this transverse flux machine. The conductor rings (7) are arranged on different sides of the permanent magnet segment, the direction of flux in the permanent magnet segments corresponding to the direction of magnetic flux in the two air gaps through which said flux passes. Preferably, the permanent magnet segments are arranged between two U-shaped halves of a square wound C-core constituting the rotor bodies (5). The stator bodies (6) are also prefabricated from grain-oriented materials as U-shaped C-cores.

Abstract: Energy converters characterized by low manufacturing costs, high efficiency, and low weight are required to generate electric energy in vehicles. The disclosed energy converter which is arranged in or on the hub of a vehicle wheel has a generator designed as a reluctance generator. An electric energy accumulator temporarily stores the generated electric energy and, when required, uniformly transmits it to consumers. Power electronics and the electric energy accumulator are preferably also arranged in or on the wheel hub. The invention provides an efficient, light, and cost-effective energy converter system which ensures a highly reliable supply and is preferably used in light, muscle-driven vehicles.

Abstract: In a process, a self-supporting winding is prefabricated independently from the soft magnetic body, the wire windings are impregnated with an insulating compound, compressed from the center of the teeth, and clamped before the insulating compound sets.

Abstract: Known multi-phase electric machines have conductor lanes which do not sufficiently utilize the space available in the grooves and winding overhang or which are costly to produce. Besides a good utilization of the available space, the length of the conductors in the winding overhangs should be kept short in order to obtain high effiency and power densities, and the number of different conductor designs should be minimized in order to reduce production costs. According to the invention, the electric machine consists of several electric pole units which have each a small number of phases and poles with alternating polarity in the direction of displacement. The electric pole units are located next to each other in the air gap and are mutually offset by a fraction of a pole pitch with respect to the rotor poles. Their meandering rectangular conductor wires extend in layers parallel to the air gap.

Abstract: In known transverse flux machines, the losses in the soft magnetic body prevent an increase in efficiency. While the production of the winding is remarkable owing to its simplicity, the production of the laminated iron body conveying the magnetic flux incurs high costs. In addition to the saturation in the iron, the use of air gaps restricts any increase in power density. In accordance with the invention, the two air gaps (21) are arranged radially externally of the winding (15) and the magnetically hard and/or soft magnetic rotor parts (19, 20) which periodically close the magnetic circuit are arranged axially within the ends of the soft magnetic stator body (18). This air gap arrangement gives rise to an air gap surface which is large relative to the external dimensions and the mass of the machine, and also relieves the load on the housing.

Abstract: In prior art three-phase electric machines with a layered winding, the conductor elements either make non-optimal use of the space in the groove or the conductors for each phase are in the form of large elements designed to be fitted into each other and whose manufacture is complicated and costly. The invention calls for the conductor lanes (5-7) for each phase in the three-phase conductor layer (11) to be identical in construction and for the construction to be repeated every four pole pitches. While the conductor lanes (5-7) occupy the full height of the layer within the magnetic field, two conductor lanes (5-7) stacked in the groove share the space at the winding ends (19). At the groove exit, the conductor cross-section increases and only later, at the winding end (19) is bisected from only one side at each passage through the winding end.

Abstract: Known conductor lanes which can be set into the grooves of linear motors or disk armatures, do not sufficiently occupy the space available in the grooves and winding overhang in multiphase machines, and thus increase the volume and weight of the machines. For high power and force densities, the conductor lanes should allow the available space to be fully occupied. The number of the different conductor lane designs should be minimized in order to reduce production costs. According to the invention, the conductor lanes (13-16) which are prefabricated in a single piece are being led past each other in the overlapping zones in the direction of the groove depth, so that the conductor cross-section is variably adapted to the available space. By using pairs of conductor lanes (13, 14) without loops and mutually offset by one pole pitch in a groove, a high utilization of the space available in the winding overhangs and short conductor lengths are achieved.