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 dynamo-electric permanently excited machine has a predefinable number of poles, with the laminated core having laminations, which each form sectors with at least two different configurations in a predefinable axial order and rotation or axial order and rotation and overlap. The laminations, independent of the configuration of the sectors, each have a shaft bore, an identical number of poles or sectors, axially aligned cut-outs and an identical outer diameter. Sectors of a first configuration have elements for distributing a potting compound or an adhesive within the laminated core, and sectors of a second configuration have retaining elements for mechanical strength of the laminated core. The flux barriers and gaps running substantially axially between the permanent magnets and the laminated core surrounding same, are filled with the adhesive and/or a potting compound.

Abstract: A component for an electric machine includes a flat region in which an electric line runs when the component is integrated into the electric machine and which includes a sharp-edged structure. A polymer layer adheres to the flat region without further aid such as to mask the sharp-edged structure and thereby protect from damage the electric line on the flat region. The polymer layer is made of cured plastic adhesive and jetted onto the flat region in the form of threads, such that the threads are spin-coated on top of one another in the form of overlapping loops and form a network structure which spans the sharp-edged structure.

Abstract: A multilevel converter (300, 310) includes a plurality of power cells (302, 304) receiving power from a source and supplying power to multiple output phases (U, V, W), wherein each output phase (U, V, W) includes a high voltage power cell (302) that is designed to output more than three voltage levels.

Abstract: Disclosed is a method for pulling a stator winding system of an electric machine into a stator lamination stack of the electric machine and to a winding tool, with the stator lamination stack having stator grooves which run parallel to a rotation axis of the electric machine and are distributed in a circle around the rotation axis and open thereto and which have on an end facing the rotation axis a gap region which is narrowed relative to the rest of the stator groove. Windings are arranged in the stator grooves, and winding overhangs, as seen in the direction of the rotation axis, protrude from the stator lamination stack at the two axial ends thereof, with the windings formed in the stator grooves as laid windings. The stator lamination stack has no guide structures on the two axial ends for guiding the individual turns of the windings.

Abstract: A method for monitoring an event in a power converter includes using record data after starting the power converter, wherein the record data do not indicate an error for a predetermined period of time after the power converter is started. Messages are assigned to error sources, and a degree of probability is calculated for an assigning process.

Abstract: A stator for a rotating electric machine includes a laminated core, and an electrically conductive winding including a winding top layer with electrically conductive top bars, and a winding bottom layer with electrically conductive bottom bars. Each groove of a stator segment of the laminated core has arranged therein a top bar and a bottom bar in adjacent relationship. The top and bottom bars protrude out of the grooves. A connecting element connects a free end of a top bar to a free end of a bottom bar of an adjacent stator segment and includes an inclined section to connect two ends of the connecting element. The ends are angled relative to the inclined section. One end of the connecting element is connected to the free end of the bottom bar and the other end of the connecting element is connected to the free end of the top bar.

Abstract: Disclosed is a method for pulling a stator winding system of an electric machine into a stator lamination stack of the electric machine and to a winding tool, with the stator lamination stack having stator grooves which run parallel to a rotation axis of the electric machine and are distributed in a circle around the rotation axis and open thereto and which have on an end facing the rotation axis a gap region which is narrowed relative to the rest of the stator groove. Windings are arranged in the stator grooves, and winding overhangs, as seen in the direction of the rotation axis, protrude from the stator lamination stack at the two axial ends thereof, with the windings formed in the stator grooves as laid windings. The stator lamination stack has no guide structures on the two axial ends for guiding the individual turns of the windings.

Abstract: An electric system (100) includes a plurality of electric devices (110), each electric device (110) having a cabinet (112), a common power source (130), each electric device (110) being electrically coupled to the common power source (130), wherein a first electric device (110-1) includes an arc fault rated cabinet (112-1) and an arc quenching device (114), and wherein, in an event of an electric arc occurring in any of the plurality of electric devices (110), energy of the are is transferred to the first electric device (110-1) and the arc quenching device (114) activated.

Abstract: An electrical feedthrough for a pressure housing includes two feedthrough elements having substantially matching external shape and dimension. Each feedthrough element extends straight along an element axis between a first element end portion and a second element end portion. A connecting element is releasably connected to the feedthrough elements and has opposite sides, with one of the opposite sides having a contact area upon which the first element end portion of one of the feedthrough elements abuts, and with the other one of the opposite sides having a contact area upon which the first element end portion of the other one of the feedthrough elements abuts. At least one of the feedthrough elements includes an electrical feedthrough conductor which extends along the element axis of the feedthrough element and abuts a connecting conductor of the connecting element.

Abstract: In a method for encapsulating a winding overhang of a stator which includes a laminated core with windings inserted in grooves of the laminated core such that winding ends protrude from the grooves to form a winding overhang at a distance from a laminated core end and run in a region between the laminated core end and the winding overhang so as to form intermediate spaces between the winding ends, at least one of the intermediate spaces is spanned by a polymer layer such as to prevent a flow of encapsulating compound through the at least one spanned intermediate space, and the winding overhang is encapsulated with the encapsulating compound after placing the stator in a housing of an electric machine.

Abstract: A regenerative drive system includes a plurality of power cells receiving power from a source and supplying power to one or more output phases, wherein each power cell is operable in multiple operation modes, each power cell including multiple switching devices including active front-end switching devices, and a central control system controlling operation of the plurality of power cells, wherein the central control system is configured to control the active front-end switching devices of each power cell with variable conduction angles in the multiple operation modes.

Abstract: A stator of a rotary electrical machine includes a laminated core having grooves, windings inserted into the grooves for forming a multi-phase winding system, and an insulating layer made of plastic and sprayed between partial winding overhangs of the windings of phases inserted immediately one after the other. The insulating layer is formed as a mesh-like structure having junctions and brace-like connections running between the junctions.

Abstract: A housing-free dynamoelectric rotary machine includes a stator having a material layer structure which includes a plurality of material layers arranged in a row along a rotation axis. The material layer structure includes a plurality of thickenings and a plurality of slots, with the slots arranged such that each of the slots is arranged between two respective ones of the thickenings. At least one of the slots is designed to receive a slot wedge, with a respective one of the thickenings being designed to fasten the slot wedge. An end element is arranged on an axial end of the stator and includes a connection box for supply with electrical energy. A connecting element connects the end element to the stator and is connected to the slot wedge.

Abstract: An electrical short-circuiting device includes a fixed contact piece and a movable contact piece. The fixed and movable contact pieces are distanced from one another in a basic position and electrically conductively connected to one another in a short-circuit position. A drive transfers the movable contact piece from the basic position into the short-circuit position, and a trigger device includes an electrically driven actuator for triggering the drive.

Abstract: Various embodiments include a passive component comprising: a substrate; and two conductor tracks disposed on the substrate. The substrate forms an electrically insulating bridge between at least two phases of an electrically rotating machine. Each of the two conductor tracks is coupled to a separate phase of the at least two phases so an electrical potential across the electrically insulating bridge is the same as in the insulation system of the machine and the potential load on the passive component corresponds to the potential load on the insulation system.

Abstract: Method, device and computer program for managing units of bulk material of an ore mine with a throughput of a few tons of bulk material per minute, wherein a material property of each unit, in particular on a conveyor system, is determined, an entry for each unit containing the respective material property of the unit and the position of each unit are stored in a database, and additional includes at least one (i) determining a transport path downstream for the each unit based on the respective entry in the database, (ii) adapting the subsequent processing of each unit based on the material property of the unit, and creating a virtual model of the repository if a unit is supplied to a repository, where a position of each unit is stored, together with its respective material property, in the database.

Abstract: In a method for producing a winding overhang assembly for an electrical rotating machine, an insulating main body is produced at least partly from a dielectric material. Each of a plurality of conductors of a metal material is connected to the insulating main body via an intermediate layer, which is produced from a material which is different from the dielectric material of the insulating main body and from the metal material of the conductors and which is produced from silver, aluminum, antimony, magnesium, tin, zinc, lead, tantalum or from a mixture and/or from at least one alloy thereof. The conductors are hereby sprayed onto the intermediate layer by a thermal spraying method.

Abstract: Provided are embodiments for a system for reducing input harmonic distortion of a power supply. The system includes a power source coupled to a power supply. The power supply includes an input stage that is configured to receive an input signal from the power-supply, wherein the input signal is received at known input frequency, and a converting stage that is operated to convert the input signal to an output signal, wherein the output signal has an output frequency. The power supply also includes an output stage that is operated to generate output power based on the output signal, and a controller that is configured to provide control signals to the output stage of the power supply to modify the output signal. Also provided are embodiments for a power supply and method for reducing input harmonic distortion of the power supply.