Abstract: A machine assembly includes a load machine secured to a frame construction. An electrical machine is coupled to the load machine and drives the load machine. The electrical machine is secured to the frame construction via multiple intermediate elements. Frame-side main parts of the intermediate elements are secured to the frame construction and machine-side main parts of the intermediate elements are secured to the electric machine. Spring assemblies are respectively arranged between the machine-side main parts and the frame-side main parts for transferring a weight force of the electric machine from the machine-side main parts to the frame-side main parts.

Abstract: A drive includes a dynamoelectric rotational machine, an electronic add-on part, and a fan unit arranged axially behind one another. The fan unit generates a cooling air flow and is embodied as a two-zone fan having axial fan elements which define a first zone to generate essentially an axial air flow and include an articulated joint with an elastic region with sufficient restoring force, and radial fan blades which define a second zone that radially adjoins the first zone and generate essentially a radial air flow. Free spaces are provided at least between a housing arrangement and the fan unit and/or between the housing arrangement and a bearing shield of the dynamoelectric rotational machine and/or between the housing arrangement and/or a shaft of the dynamoelectric rotational machine, with the free spaces being acted upon during operation of the fan unit by the cooling air flow and a Venturi effect.

Abstract: Various embodiments of the teachings herein include an electric drive comprising: a rotor; a stator having a plurality of field conductors for generating a magnetic field to convey a torque to the rotor; one or more inverters arranged at a first axial end of the stator and each comprising two DC terminals and two field conductor terminals, wherein each field conductor terminal is connected to a first terminal of one or more of the field conductors; and one or more second inverters arranged at a second axial end of the stator and each comprising two DC terminals and two second field conductor terminals, wherein each second field conductor terminal is connected to a second terminal of one or more of the field conductors.

Abstract: The current disclosure describes a method of observing a behaviour of a cement kiln process, the method comprising using an artificial intelligence model and forcasting at least one variable based on an artificial intelligence model, wherein the variable depends on the kiln process. Also described is a system for observing a behaviour of a cement kiln process, the system comprising a recording device for data of sensor signals, a model to calculate a forecast of a variable, wherein the variable depends on the kiln process, and in particular a user interface for displaying a forecast of a variable, wherein the variable depends on the kiln process.

Abstract: An electric device (100) includes an arc quenching device (140), an arc fault rated cabinet (120) rated to resist an electric arc or short circuit, and an elastic support structure (200) configured to absorb energy based on electrodynamic forces in an arc fault event or a short circuit event. Further, an electric system and a method of calculating elasticity of an elastic beam (200-A, 200-B) configured to absorb energy of electrodynamic forces are described.

Abstract: An electric machine includes a housing and a stator. The housing includes a double-walled bearing receptacle for receiving a bearing. A segmented ring adapter fastens the bearing to the housing. The electric machine has, in addition to the stator, a first stator-side coupling element and the housing has a first housing-side coupling element, wherein the first stator-side coupling element and the first housing-side coupling element are located at an axial height of the electrical machine in a region of a stator laminated core of the stator.

Abstract: A solar group unit includes at least two solar units. Each of the solar unit includes plurality of solar modules which are each arranged in a carrier unit. A connecting point to an electrical connection is arranged between two of the solar modules that are arranged in a series circuit. The carrier unit is at least partially electrically conductive and is electrically conductively connected to the connection point. The solar units are arranged electrically in series in order to transmit the generated electrical power. The carrier units of the respective solar modules are arranged such as to be electrically insulated from one another by an insulator which is embodied as a component.

Abstract: Apparatus for sensing a high-frequency event signal in a rotating electrical machine includes a HF evaluation apparatus, and at least two sensors arranged in the rotating electrical machine and designed to sense a low-frequency sensor signal. Each of the at least two sensors Includes an antenna for decoupling the high-frequency event signal from a high-frequency electromagnetic field of the rotating electrical machine. A common coupling element connects the at least two sensors to the HF evaluation apparatus. The coupling element designed to transfer the high-frequency event signal from at least one of the at least two sensors to the HF evaluation apparatus and to decouple the low-frequency sensor signal.

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 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 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.