Abstract: A contact hook for providing an electric contact to a winding arrangement of an electric machine, with a fastening portion for fastening to the electric machine, which provides a first contact surface for a resistance welding electrode, and a hook portion adjoining the fastening portion, which provides a second contact surface for a resistance welding electrode. The hook portion is formed and arranged for forming with the fastening portion a groove for receiving a wire connected to the winding arrangement in a first assembly state, in which a free end of the hook portion forms, at a distance from the fastening portion, a groove opening for inserting the wire into the groove. The free end of the hook portion in a second assembly state rests against the fastening portion, closing the groove opening.

Abstract: A method for producing an electromagnet from a metal core and at least one metal wire is disclosed and may include joining a plurality of metal plates into the metal core by packing and winding at least one metal wire around the assembled metal core. Each metal plate may include plastically shaped areas and the plastically shaped areas of the metal plate may be connected by force-locking and/or form-fitting to the plastically shaped area of at least one adjacent metal plate in a joining direction. A multitude of windings may be wound around the metal core. The windings may be placed next to each other and/or on top of one another and a partial region of each winding may be oriented parallel to the joining direction. Furthermore, an electromagnet produced according to the method and a rotor of an electric machine having at least one electromagnet are disclosed.

Abstract: An electric machine comprises a rotor and a stator, wherein the stator comprises a stator body which carries at least one respective winding of at least one phase, wherein the winding of the respective phase or at least one of the windings of the respective phase is conductively connected to a respective contact bridge, which connects the respective winding to an associated power source and/or drain, wherein the respective winding and the contact bridge connected to it each end in a conductor section which extends away from the stator body in the axial direction of the electric machine, these conductor sections being conductively connected to one another, wherein a fixing section of the respective contact bridge is arranged stationary with respect to a housing accommodating the stator by being fixed by an insulation element or directly, on the one hand, to the housing itself and/or, on the other hand, to the power source and/or drain, which, in turn, is fixed to the housing.

Abstract: A star disk for a rotor of an externally excited synchronous machine, having a central disk body, from which multiple webs extend radially, at the ends of which an end plate is provided each time, so that between the disk body and the respective end plate there is formed a winding groove, being bounded by the web forming the groove bottom and laterally by the disk body and the end plate, forming groove flanks, and serving to contain a conductor winding led around the web and formed from a conductor wire which is wound in multiple layers, wherein the web is provided with flutes running in the winding direction and serving to contain a respective conductor wire segment, there being provided at least one additional flute on a groove flank at least on one side of the web.

Abstract: A method for putting an SSM rotor, having the following steps: arranging the SSM rotor to be potted having upright alignment in a potting mold; introducing a first casting compound from below into the casting mold until a certain pre-fill level is reached, at which the first casting compound extends at least up to the lower end face of the rotor winding; introducing a second potting compound from above into the potting mold, wherein the second potting compound is poured onto the rotor winding and is drawn into the rotor winding; further introducing of the first potting compound from below into the potting mold until a certain final fill level is reached; and curing of the potting compounds.

Abstract: A stator for an electric machine comprises a winding support having multiple grooves and at least one conductor forming a respective winding for a respective phase of the stator, wherein a first and second conductor section of the conductor are formed respectively by multiple conductively interconnected conductor clips, wherein the conductor clips comprise respectively two groove sections, each being led through one of the grooves of the winding support, a coupling section connecting the groove sections, and two connection sections which protrude beyond the grooves on the side of the winding support situated opposite the coupling section, wherein the first and second conductor section are connected to each other in series by an intermediate conductor, wherein the intermediate conductor conductively connects exclusively one connection section of a conductor clip of the first conductor section to a connection section of a conductor clip of the second conductor section and is arranged radially within the connect

Abstract: A method for reworking a defective welded connection of a hairpin winding for a rotor or stator of an electrical machine, including providing the hairpin winding applied to a winding support. The hairpin winding has at least one conductor formed from multiple conductor sections. The conductor sections of the respective conductor are welded in pairs at a respective welded connection by a first welding method, and at least one of the welded connections is a defective welded connection. The defective welded connection is severed, and the conductor sections to be welded, which were previously connected by the defective welded connection, are connected by way of a connecting method that differs from the first welding method.

Abstract: A star disk for a rotor of an externally excited synchronous machine, having a central disk body, from which multiple webs extend radially, at the ends of which an end plate is provided each time, so that between the disk body and the respective end plate there is formed a winding groove, being bounded by the web forming the groove bottom and laterally by the disk body and the end plate, forming groove flanks, and serving to contain a conductor winding led around the web and formed from a conductor wire which is wound in multiple layers, wherein the web is provided with flutes running in the winding direction and serving to contain a respective conductor wire segment, there being provided at least one additional flute on a groove flank at least on one side of the web.

Abstract: A method for putting an FSM rotor, having the following steps: arranging the FSM rotor to be potted having upright alignment in a potting mold; introducing a first casting compound from below into the casting mold until a certain pre-fill level is reached, at which the first casting compound extends at least up to the lower end face of the rotor winding; introducing a second potting compound from above into the potting mold, wherein the second potting compound is poured onto the rotor winding and is drawn into the rotor winding; further introducing of the first potting compound from below into the potting mold until a certain final fill level is reached; and curing of the potting compounds.

Abstract: An electric machine comprises a rotor and a stator, wherein the stator comprises a stator body which carries at least one respective winding of at least one phase, wherein the winding of the respective phase or at least one of the windings of the respective phase is conductively connected to a respective contact bridge, which connects the respective winding to an associated power source and/or drain, wherein the respective winding and the contact bridge connected to it each end in a conductor section which extends away from the stator body in the axial direction of the electric machine, these conductor sections being conductively connected to one another, wherein a fixing section of the respective contact bridge is arranged stationary with respect to a housing accommodating the stator by being fixed by an insulation element or directly, on the one hand, to the housing itself and/or, on the other hand, to the power source and/or drain, which, in turn, is fixed to the housing.