Abstract: In a method for producing a stator of a dynamoelectric machine, a laminated core which has at least one stator bore, axially running slots and slot openings directed toward the stator bore is stacked. When viewed in a circumferential direction, a slot is formed by two directly adjacent tooth shafts, sections of corresponding tooth heads, the slot opening and a slot base. The slot opening is formed by two opposing end sections of adjacent ones of the tooth heads when viewed in the circumferential direction. The end sections of the tooth heads are coated with an anti-friction coating by a spinning operation or a nozzle. A spinning or spraying device is moved axially within the stator bore during application and thereby provides one slot opening or simultaneously more than one of the slot openings with the anti-friction layer. A winding is drawn into the slots via the slot openings.

Abstract: A cooling cover includes a base plate for installation on a body of an electric motor, a cover plate, an enclosure connected between the base plate and the cover plate and two partitions. The enclosure, the base plate and the cover plate form an air compartment. The partitions are located in the air compartment and separate the air compartment into first and second air inlet chambers and an air outlet chamber which is formed between the two partitions. The base plate has at least two first air inlets in the first air inlet chamber, at least two second air inlets in the second air inlet chamber, and an inner air outlet in the air outlet chamber. The enclosure has a third air inlet in the first air inlet chamber, a fourth air inlet in the second air inlet chamber, and an outer air outlet in the air outlet chamber.

Abstract: A method for monitoring an electric machine is carried out for recurring operating states of the electric machine. Real data in relation to control of the electric machine are monitored against expected data, Deviations between the real data and the expected data are added over time, and the deviations are used to classify the behavior of the control. The classification of the control is monitored over time, and the expected data are changed on the basis of the monitoring of the classification.

Abstract: Various embodiments of the teachings herein include an electric motor comprising: a stator with a plurality of field conductor bars; an inverter having one or more parallel power components for each of the field conductor bars, and a controller to generate control signals for the one or more power components; a respective plug connector arranged on each of the circuit boards to contact the output stages ; and a connector board plugged into plug connectors of circuit boards of different circular or annular structures that are azimuthally identical with respect to the central axis. Output stages of the inverter are arranged on a plurality of circuit boards. The individual circuit boards are arranged to form at least two circular or annular structures arranged parallel and axially offset with respect to one another, so respective centers lie on a common central axis.

Abstract: A current-measuring facility for an electric machine includes a sensor which is arranged in a region of homogenous magnetic field lines, a first flux-conducting element, a second flux-conducting element, a first distancing element and a second distancing element. The first distancing element is designed to distance the first flux-conducting element from the second flux-conducting element.

Abstract: A drive includes a rotary dynamoelectric machine which includes a plurality of inverter modules. A predeterminable number of physical and/or chemical sensors are provided on and/or within the drive and are assigned to at least one or more portions of the rotary dynamoelectric machine and/or to one or more inverter modules. The drive includes an evaluation and/or control unit that allows at least a provisional evaluation of data detected by the sensors. Communication from the evaluation and/or control unit to at least a cloud and/or to the inverter modules is made possible in predefinable time intervals and/or data packets.

Abstract: A synchronous machine includes a starting resistor having an electrical conductor which has a specific electrical resistance that is different than a specific electrical resistance of copper.

Abstract: A thixotropic potting compound for fixing a permanent magnet in a rotor of a permanently excited synchronous machine includes a base resin material formed as a two-component reactive resin containing a predefinable amount of a thermally conductive additive and/or an additive affecting a gelling of the potting compound, wherein Aerosil fumed silica is present in a range between 0.1-0.5% by volume.

Abstract: A rotor of a permanently excited synchronous machine includes a laminated core having essentially axial cut-outs with pockets, retaining elements and flux barriers, permanent magnets inserted into the pockets, an end disc and/or distribution disc stacked on an end face of the laminated core and including a feed and an annular channel in communication with the feed, a thixotropic potting compound fed via the feed of the distribution disc and via the annular channel into a space not taken up by the permanent magnets in the cut-outs at an infeed temperature of up to 60° C. at a flow rate of up to 10 mm per second and at a predefinable pressure of up to 10 bar, until at least all axial gaps are filled or until the cut-outs are fully filled with the thixotropic potting compound, and a surface which is free from a lacquer layer or the potting compound.

Abstract: Various embodiments of the teachings herein include a power electronics module. An example includes: circuit boards; and power electronics components on the circuit boards. Two circuit boards are arranged on two cooling plates arranged parallel to one another. Each cooling plate comprises two cooling surfaces parallel to one another. At least one circuit board is arranged on mutually facing cooling surfaces. The two cooling plates each have two through holes. Two rods penetrate both of the two cooling plates in the through holes. Locking devices on the two rods fix the two cooling plates along a rod axis. Support struts are arranged between two mutually opposed circuit boards. The locking device applies a pre-tension along the rod axes counteracted by the support struts, thereby pressing the circuit boards against the opposing cooling surfaces of the two cooling plates.

Abstract: A winding device for arranging a wire winding in a magnetizable flux conductor of a stator of a rotary electric machine embodied as an internal rotor, with the flux conductor element having a receiving opening for receiving a rotatably mounted rotor of the rotary electric machine and longitudinal grooves, open on the opening side, for arranging windings of the wire winding made of at least one winding wire, Includes a wire insertion device designed for arrangement at least partially in the receiving opening; and a supporting unit that supports insertion of the winding wire and has a guide element which is designed to arrange the winding wire in a predetermined longitudinal groove of the flux conductor element. The wire insertion device includes a carriage movable axially back and forth, on which a wire guiding sleeve is arranged and able to swivel between two predefinable swivel positions by a swivel drive.

Abstract: A housing-free dynamoelectric rotary machine includes a stator having a substantially hollow cylindrical magnetically conductive body which includes a plurality of jaws which are distributed on an outer circumference of the magnetically conductive body and arranged in a shape of pincers such that two of the jaws in opposite relation to one another form an axially extending channel structure. A mounting element is receivable in the channel structure and moveable axially and/or about its own axis in the channel structure. A connecting element connects the mounting element to an add-on element in such a way that a complementary contact region of an outer section of the jaws and a corresponding surface of the add-on element result in at least one section to realize a wedge effect on the complementary contact region. A rotor mounted for rotation about an axis is spaced apart from the stator by an air gap.

Abstract: Various embodiments of the teachings herein include an electric motor. An example includes: a stator having a plurality of field conductors; a plurality of inverters to control the field conductors arranged on one or more circuit boards; wherein the one or more circuit boards are arranged on a cooling plate; and a heat tube with an evaporator side arranged in the cooling plate and a condenser side arranged outside the cooling plate.

Abstract: Some examples of the teachings herein include enamel-insulated wires. An example system includes: a round electrical conductor; and a wire enamel surrounding the electrical conductor. A layer of thermally unstable material includes at least one of: a lubricity constituent as topmost layer and/or a thermally unstable layer as a penultimate layer of the wire enamel directly bordering the surface.

Abstract: A squeeze film damper includes an inner ring, an outer ring, and a plurality of bars designed to connect the inner ring and the outer ring. At least one of the inner and outer rings includes a flange, with individual ones of the plurality of bars being connected only to the flange.

Abstract: In a method for operating a cable, a sensor arranged in the cable generates sensor signals, when the sensor detects a use of the cable. The sensor signals are evaluated based on operating data relating to past and/or future data and a characteristic is produced for the cable based on the sensor signals.

Abstract: A drive includes a dynamo-electric rotary machine arranged in the housing and including a stator, a winding system arranged in the stator, and a rotor separated from the stator by an air gap, with the stator and the rotor being located in a motor interior. A B-side pot-shaped bearing shield includes a bearing supporting the rotor for rotation about an axis. A converter is situated in a converter installation space which is radially surrounded at least in one section by the B-side bearing shield.. The converter is arranged, as viewed axially, between the dynamo-electric rotary machine and the bearing of the B-side bearing shield and has at least one component, such as power semiconductor, capacitor, control and regulating unit, and communications unit, which is thermally conductively connected to the B-side bearing shield. A choke body separates the motor interior and the converter installation space and includes chokes.

Abstract: In a method for producing a rotor of a dynamo-electric machine, a magnet pocket and flux barriers are formed in an axial circumferentially closed recess of a laminated core for receiving a permanent magnet with two opposite flux barrier sides facing flux barriers, a delivery side and a thrust side on two opposite sides, and an air gap side and an axle side. Portions of the delivery side and/or adjoining regions of a side in a magnetic flux are formed of curved or fluidic configuration. Adhesive is added to the delivery side and the permanent magnet is pushed with the delivery side axially into the magnet pocket such that the adhesive is distributed via a gap between the air gap side and the magnet pocket and a gap between the axle side and the magnet pocket without wetting the flux barriers, thereby bonding the permanent magnet in the magnet pocket.

Abstract: An electric motor includes a stator having a plurality of bar-shaped field conductors. A cooling plate is arranged such that the field conductors are mechanically operatively connected to the cooling plate via current conductors that are electrically connected to the field conductors. The cooling plate is segmented into at least two sub-segments, which are electrically insulated from one another and annular or designed in a form of annular sectors. A separating surface between the sub-segments represents less than 20% of a cooling surface. A printed circuit board structure having one or more printed circuit boards, with at least one of the printed circuit boards being arranged on the cooling plate. The printed circuit boards are electrically contacted to the sub-segments of the cooling plate in order to supply power. A plurality of power electronics components controls the field conductors and is arranged on the printed circuit board structure.

Abstract: A drive system includes a power circuit (600, 700, 800) with a plurality of power cells supplying power to output phases (A, B, C), each output phase including a phase group of series-connected power cells, a voltage source power supply, and a bypass mechanism (650, 750, 850) comprising spare power cells and bypass contactors, wherein the phase groups of the power circuit are connected at a point of common coupling, and wherein a spare power cell is installed at the point of common coupling.