Abstract: A method for producing a rotor of an asynchronous machine includes providing a rotor lamination stack having grooves extending parallel to a rotor axis of the rotor, inserting conductor rods into the grooves such that the conductor rods protrude from end faces of the rotor lamination stack, wherein a twisting tool is placed at each of the end faces onto the protruding conductor rods and the twisting tools are twisted relative to each other, where the parallel grooves with the corresponding conductor rods also extend obliquely after the twisting and where the twisting tools are formed such that the protruding conductor rods remain parallel to the rotor axis when an oblique profile of the stack is produced, removing the twisting tools, providing first and second short-circuit washers, and axially pressing the short-circuit washers onto the conductor rods projecting perpendicularly from the end face of the rotor lamination stack.

Abstract: A slot wedge for a slot in a stator of a dynamoelectric machine, wherein the slot wedge is formed as a longitudinally extending strip of insulating material, where the strip is provided with a punched portion.

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: In a method for detecting a fault in a machine, a vibration signal recorded by one or more sensors sensing a vibration of the machine is received. A true fault signal is determined by applying to the vibration signal a neural network which is an unsupervised neural network, and an envelope spectrum analysis is applied to the true fault signal to detect the fault. The unsupervised neural network is designed to determine the true fault signal such that an impulsive component in the true fault signal is maximized, and is designed to determine the true fault signal such that a difference between the true fault signal and the vibration signal is minimized.

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: Various embodiments include an insulation material and/or impregnation resin for a wrapping tape insulation, comprising: a base resin curing to a thermoset; and a curing agent. The base resin comprises a siloxane-containing compound forming a —SiR2—O— backbone in the thermoset.

Abstract: A rotor of a rotary dynamoelectric machine incudes a magnetically conductive body, having substantially axially running slots distributed around the circumference. A squirrel cage includes electrical conductors which are arranged in the slots. The electrical conductors are electrically contacted at the two end faces of the rotor by short-circuit rings. The magnetically conductive body includes a base body and at least two further additional bodies, which axially adjoin the base body. A first one of the at least two additional bodies directly axially adjoins the end face of the base body, and a second one of the at least two additional bodies and optionally any further additional body axially adjoin the first additional body. The slots have radially exposed slot portions in the axial end regions of the rotor such that the conductors can be moved radially outward.

Abstract: A system, apparatus and method for estimating remaining useful life of at least one bearing is provided. The method includes receiving request for analyzing defect in bearing from source, determining vibration spectrum of bearing from the received operational data, monitoring an impact of defect on one bearing over a period of time based on the determined vibration spectrum, determining characteristic values from the vibration spectrum for which the impact of the defect on the bearing is above a threshold range, determining impact force during an operation of the at least one bearing based on the determined characteristic values and one or more parameters obtained from a virtual bearing model, determining remaining useful life of the bearing based on the determined impact force during the time period and generating a notification indicating the remaining useful life of the bearing on output device.

Abstract: In a method for measuring a stockpile, a scanner detects a reference point of a reference body. A scanner position and a scanner alignment for the scanner is ascertained using the detected reference point. Scan data of the stockpile is detected by the scanner and a position and volume of the stockpile is ascertained using the scan data.

Abstract: Various applications of the teachings of the present disclosure include a powder coating formulation suitable for producing an insulation system of an electrical machine. The formulation may include: a curable resin mixture; and spherical SiO2 filler particles having a maximum particle diameter of 100 ?m.

Abstract: A drive includes a rotary dynamoelectric machine having a stator and a rotor separated by an air gap. The stator includes a magnetically conductive body with a winding system in air-gap-facing grooves thereof. The winding system includes in each groove a conductor bar divided into sub-conductors or sub-conductor bundles, electrically contacted at a first end of the conductor bar with an inverter module such that a plurality of sub-conductors or a sub-conductor bundle of the conductor bar are attached to the inverter module, or each of the sub-conductors of the conductor bar is attached to an inverter module, so that a plurality of inverter modules are provided per groove. The sub-conductors or sub-conductor bundles are combined at a second end of the conductor bar at another end face of the magnetically conductive body with the sub-conductors or sub-conductor bundles of further conductor bars to form a short-circuit ring.

Abstract: Various embodiments of the teachings herein include an electric motor. An example includes: a stator with a plurality of bar-shaped field conductors; and an inverter with one or more parallel power components for controlling each of the field conductors, wherein the inverter comprises a controller to generate control signals for the power components. Power amplifiers are arranged on a plurality of circuit boards. The individual circuit boards are arranged on one or more cooling plates. The one or more cooling plates are arranged in mechanically active connection with the field conductors. A cooling device including a fluid line routed at least in part inside one of the field conductors.

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

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 data model is used in a method for analyzing a belt conveyor, wherein the data model relates to a digital image of the belt conveyor. A first function value of the belt conveyor is determined, and the first function value and a second function value which relates to the belt conveyor or to a further belt conveyor are used to analyze the belt conveyor. The first and second function values are determined spaced apart in time, or the first and second function values relate to different belt conveyors. With the aforedescribed standardization, a benchmark for assessing the performance of a belt conveyor can be established, and the performance of belt conveyors performing a similar transport task can be assessed as well.

Abstract: A modular braking adjuster having at least one submodule and a braking resistor, which are arranged in a series circuit, are operated by generating with the at least one submodule a square-wave or trapezoidal voltage that has an alternating portion dimensioned such that the time-averaged electrical energy absorbed by the modular braking adjuster is converted to heat in the braking resistor. The modular braking adjuster has a control device for controlling or regulating the at least one submodule. Also disclosed is a modular drive unit with a modular multi-level power converter and the aforementioned modular braking adjuster, wherein the modular braking adjuster is electrically connected to a DC voltage side of the modular multi-level power converter.

Abstract: A module for a top-mounted cooler, in particular plate heat exchanger of a dynamoelectric machine, has regions that are fluidically separate from one another and that permit the formation of a primary circuit and a secondary circuit. The module has at least one section that has an auxiliary fan and/or sensors and/or analysis possibilities and/or contact possibilities and/or communications with a superordinate controller. The module has closure mechanisms that correspond to a receiving opening in the top-mounted cooler. The module, when inserted into a receiving opening in the top-mounted cooler of the dynamoelectric machine, enables at least part of the primary circuit and at least part of the secondary circuit of the top-mounted cooler with the dynamoelectric machine.

Abstract: Various embodiments of the teachings herein include a method of ascertaining a progression of curing on application of an electrical insulation layer of an insulation material in a liquid state to an electrical product. An example includes: providing a temperature progression that the electrical product undergoes in the course of application and curing of the insulation layer; providing a reaction model of the insulation material to give a progression of curing of the insulation material on the basis of a temperature progression as input parameter and modeled on the basis of measured enthalpies of reaction of the insulation material at two different heating rates; and ascertaining the progression of curing using the reaction model with the temperature progression.

Abstract: A self-ventilated electrodynamic rotary machine includes a housing configured to at least partially axially enclose the rotary machine, and a fan connected in a rotationally fixed manner to a shaft on a ventilation side of the rotary machine and configured to generate a main cooling air flow when the shaft rotates about an axis. The fan includes a cover which is configured to direct the main cooling air flow onto the housing and is structured to improve cooling of the housing. An air guide element is detachably fixed to the cover to generate an additional cooling air flow. The air guide element, when viewed in a circumferential direction, has a segmented design and is configured as separate part for retrofitting to the cover depending on a thermal requirement of the rotary machine.

Abstract: Various embodiments of the teachings herein include an electric motor comprising: a stator with a plurality of field conductors; a cooling plate; a printed circuit board arranged on the cooling plate; a plurality of power electronic components for controlling the field conductors, the power electronic components arranged on the printed circuit board; and a groove-like recess in the cooling plate. The cooling plate in is mechanical contact with the field conductors via current conductors electrically connected to the field conductors. A busbar is arranged in the groove-like recess and thereby electrically insulated from the cooling plate and at least partially covered by the printed circuit board. The printed circuit board is in electrical contact with the busbar.