Abstract: Various embodiments of the teachings herein include a gearbox adapter. For example, some embodiments include an adapter body with an internal cavity, a first end having a gearbox connection structure connecting the adapter body to a gearbox body, a first shaft hole in an end face of the first end providing communication between the internal cavity and an outside of the adapter body, and a second end having an opening in communication with the internal cavity; a transmission shaft configured to extend from the outside into the internal cavity via the opening and then out of the adapter body through the first shaft hole; an opening cover with a second shaft hole, the opening cover fitted at the second end to block the opening but allow the transmission shaft to pass out of the internal cavity through the second shaft hole; and a rotating bearing arranged in the internal cavity and fitted to the transmission shaft to support the transmission shaft.

Abstract: An electronic protection switch includes first and second network terminals and two semiconductor switches of same kind. Each semiconductor switch is formed by an IGBT semiconductor switch and includes a switching element and a diode which is arranged antiparallel to the switching element. A first of the two semiconductor switches is arranged without a semiconductor series connection between a positive potential terminal of the first network terminal and a positive potential terminal of the second network terminal. A second of the two semiconductor switches is arranged without a semiconductor series connection between a negative potential terminal of the first network terminal and a negative potential terminal of the second network terminal. The switching element of each semiconductor switch is arranged so as to be able to conduct and switch off a current from the first network terminal to the second network terminal.

Abstract: A conductor bar of a cage rotor of an asynchronous machine has a longitudinal extension and includes first and second sections in the longitudinal extension. The first section has a hardness which is lower than a hardness of the second section and is realized through soft annealing, brief inductive heating or heating by a flame so as to enable a compression of the first section of the conductor bar by way of axial pressure after axially joining the conductor bar in a slot of a magnetically conductive body of the cage rotor, with the first section abutting an inner wall of the slot of magnetically conductive body of the cage rotor.

Abstract: A brake adjuster for a modular multilevel converter includes a plurality of submodules, a first switching group including at least one of the plurality of submodules, a second switching group including at least another one of the plurality of submodules, and a resistor. The first switching group is arranged between the resistor and a first connection point and the second switching group is arranged between the resistor and a second connection point such that the resistor and the first and second switching groups form an electrical series circuit between the first connection point and the second connection point. Any further one of the plurality of submodules is arranged in the first switching group or in the second switching group.

Abstract: An attachment cooler of a dynamo-electric machine is embodied as a heat exchanger and includes a primary circuit for flow of a medium, and a secondary circuit separate from the primary circuit for flow of a medium, with the secondary circuit including a central channel and a waste air channel. A casing includes receiving openings and is designed to accommodate the central channel and the waste channel of the secondary circuit, with the waste channel leading out to a side of the casing. Exchangeable modules embodied as plate heat exchangers are insertable in the receiving openings of the casing. Each of the modules is designed for individual removal, without a flow bypass being created by unoccupied ones of the receiving openings.

Abstract: A rotor of a dynamo-electric rotary machine includes a rotor core arranged concentrically to a rotor axis and including slots filled with electrically conductive material. A front ring is arranged at a front axial end of the slots and includes electrically conductive material, and a rear ring is arranged at a rear axial end of the slots and includes electrically conductive material. A rotor-core-distal surface of the front ring and/or rear ring has a bevel in axial direction from an outer circumference to an inner circumference, with the bevel defined by a bevel angle having a value of 3° to 30°. A support element is at least partially connected to the front and/or rear ring with a positive fit and pressed thereon axially, with the support element being supported on a shaft and having a radial end which terminates at a radial end of the front and/or rear ring.

Abstract: A method for evaluating partial discharge signals. Partial discharge signals are captured, at only one point or at a plurality of points, near insulation of the electrical outer conductors of a multi-phase alternating current. The multi-phase alternating current, flowing in respective outer conductors, has fixed phase shifts relative to each other. Partial discharge signals are superposed on each other. At least one characteristic variable of the partial discharge signals is defined. Each partial discharge signal is assigned a phase position. A characteristic variable value of each characteristic variable is determined. Each partial discharge signal is assigned a number tuple from each characteristic variable value of the partial discharge signal and from the phase position. Clusters of the partial discharge signals in a multidimensional space with points formed by the number tuples are determined. A partial discharge activity is determined for each outer conductor from the determined clusters.

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: An electric machine includes a stator and a housing. The stator includes a laminated stator core and a first stator-side coupling element located at a height of an axis of the electric machine in an area of the laminated core. The first stator-side coupling element includes a first slot. The stator includes annular stator elements accommodating the first stator-side coupling element. The housing includes a first housing-side coupling element located at the height of the axis of the electric machine in an area of the laminated core and having a second slot. Screw connections provide a connection between the first stator-side coupling element and the first housing-side coupling element, and a key forms part of the connection between the first stator-side coupling element and the first housing-side coupling element. The stator is aligned in relation to the housing by at least two keys.

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: Various embodiments include a sprayable formulation for an insulation system of an electrical machine, the formulation comprising a sprayable resin mixture including: a monomeric and/or oligomeric, at least diepoxidic carbon-based first resin component; and a monomeric and/or oligomeric second resin component based on alkyl-/arylpolysiloxane with at least one glycidyl ester and/or glycidyl ether functionalities; and a curing agent and based on at least one of: anhydride, (poly)amine, and amino- and/or alkoxy-functional alkyl-/arylpolysiloxane.

Abstract: Various embodiments of the teachings herein include a cationic tape accelerator for use in a process for producing an insulation system by impregnation and/or encapsulation with an anhydride-free impregnating agent. The tape accelerator comprises an ionogenic compound of a sulfonium-containing cation and a hexafluoroantimonate anion.