Abstract: An insulating unit for an electric machine with hairpin winding. The hairpin winding has a plurality of connection pins for electrically connecting to an interconnect and a plurality of welded hairpin ends. A base body is provided having an insulating material and extends at least over a portion of the circumference of the hairpin winding. The base body has a receiving area which faces the hairpin winding and which has openings for receiving the hairpin ends. The dividing walls are provided between the openings in circumferential direction, and the openings and/or dividing walls have fasteners for engaging connection to the hairpin ends.

Abstract: A stator for an electric machine having an annular lamination stack with a longitudinal axis and slots extending along the longitudinal axis, at least three electrical phases, each of which has two partial strands, a plurality of rings connected in series to form a partial strand, a plurality of connection wires arranged to form a ring in adjacent layers of the slots, and a power connection for electrically connecting the stator. The connection wires are connected by pairs at a contacting side of the lamination stack for connecting adjacent layers at contacting areas. The power connection is arranged at the contacting side, and the connection wires are closed in each instance at an opposed contacting side opposite the contacting side.

Abstract: An insulating unit for an electric machine with hairpin winding having a plurality of connection pins for electrically connecting to an interconnection and a plurality of welded hairpin ends which form contact pairs.

Abstract: An insulating unit for an electric machine with hairpin winding. The hairpin winding has a plurality of connection pins for electrically connecting to an interconnect and a plurality of welded hairpin ends. A base body is provided having an insulating material and extends at least over a portion of the circumference of the hairpin winding. The base body has a receiving area which faces the hairpin winding and which has openings for receiving the hairpin ends. The dividing walls are provided between the openings in circumferential direction, and the openings and/or dividing walls have fasteners for engaging connection to the hairpin ends.

Abstract: A stator for an electric machine having an annular lamination stack with a longitudinal axis and slots extending along the longitudinal axis, at least three electrical phases, each of which has two partial strands, a plurality of rings connected in series to form a partial strand, a plurality of connection wires arranged to form a ring in adjacent layers of the slots, and a power connection for electrically connecting the stator. The connection wires are connected by pairs at a contacting side of the lamination stack for connecting adjacent layers at contacting areas. The power connection is arranged at the contacting side, and the connection wires are closed in each instance at an opposed contacting side opposite the contacting side.

Abstract: An active part of an electrical machine, such as a rotor or a stator, an electrical machine having the active part, which has a main body and a winding that is surrounded by an encapsulation compound, where the encapsulation compound has at least three regions, where the winding extends through the main body in a slot in a first region, where the winding surrounded by the encapsulation compound projects out of the main body at least in a third region, and which has at least a second region arranged between the first region and the third region in the active part, where the encapsulation compound has a different composition in the second region than in the first region or the third region.

Abstract: The invention relates to a method for producing a rotor and/or a stator of a dynamoelectric rotary machine by means of the following steps: —producing pre-formed coils from an integral electrically conductive material or pre-insulated or coated electrically conductive wires, —fixing spacers to the pre-formed coil at predefinable intervals, —inserting the pre-formed coil, which is provided with spacers, into slots in a laminated core of a stator or rotor, —making contact with the individual pre-formed coils to form groups of coils and forming a winding system of a rotor and/or stator in accordance with a predefined circuit plan, —insulating the pre-formed coils or the winding system in the slots by complete encapsulation, in particular by complete vacuum encapsulation.

Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element for closing the slot. A closure element for closing the slot contains a ferromagnetic material, and has a predetermined bending section along a longitudinal extension direction of the closure element, such that two leg portions disposed at an obtuse angle of less than 180° to one another are connected by the bending section. An adhesive layer designed to harden when heated is disposed on edges of the two leg portions.

Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element which contains a ferromagnetic material. An adhesive layer disposed on the closure element is designed to expand and harden when heated. The adhesive layer contains a thermally activatable blowing agent configured as an expansion element which contains a closed cavity filled with gas. The cavity is partially enclosed by a thermoplastic resin in the expansion element.

Abstract: An active part of an electrical machine, such as a rotor or a stator, an electrical machine having the active part, which has a main body and a winding that is surrounded by an encapsulation compound, where the encapsulation compound has at least three regions, where the winding extends through the main body in a slot in a first region, where the winding surrounded by the encapsulation compound projects out of the main body at least in a third region, and which has at least a second region arranged between the first region and the third region in the active part, where the encapsulation compound has a different composition in the second region than in the first region or the third region.

Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element for closing the slot. A closure element for closing the slot contains a ferromagnetic material, and has a predetermined bending section along a longitudinal extension direction of the closure element, such that two leg portions disposed at an obtuse angle of less than 180° to one another are connected by the bending section. An adhesive layer designed to harden when heated is disposed on edges of the two leg portions.

Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element which contains a ferromagnetic material. An adhesive layer disposed on the closure element is designed to expand and harden when heated. The adhesive layer contains a thermally activatable blowing agent configured as an expansion element which contains a closed cavity filled with gas.

Abstract: The invention relates to a method for producing a rotor and/or a stator of a dynamoelectric rotary machine by means of the following steps:—producing pre-formed coils from an integral electrically conductive material or pre-insulated or coated electrically conductive wires,—fixing spacers to the pre-formed coil at predefinable intervals,—inserting the pre-formed coil, which is provided with spacers, into slots in a laminated core of a stator or rotor,—making contact with the individual pre-formed coils to form groups of coils and forming a winding system of a rotor and/or stator in accordance with a predefined circuit plan,—insulating the pre-formed coils or the winding system in the slots by complete encapsulation, in particular by complete vacuum encapsulation.