Robert Boschgmbh

Seg Automotive Germany Gmbh

Eberhard Rau

Thomas Berger

Helmut Kreuzer

Klaus Pflueger

Martin Henne

Gert Wolf

Kurt Reutlinger

Alexander Shendi

Christoph Schwarzkopf

Alexander Mueller

Klaus Herbold

Gerlinde Weber

Wolfgang Harrer

Dirk Wolf

Norbert Pfitzke

Bernard Walle

Rob Berry

Rolf-Dieter Hahn

Reinhard Bezner

Williams Neil

Alan Fussey

Adam Willmott

Thomas Harrer

Yvonne Goebel

Olaf Simon

Alexander Puhahn

Bernhard Walle

Method for producing a stator winding () of an electric machine (), in particular an AC generator, wherein the stator winding () has at least n phase windings (), and one phase winding () has a plurality of directly successive wound coils () with coil sides () and coil side connectors (), wherein the coils () are divided into first coils () and second coils (), with a forming tool (), in which slots (') are provided which are suitable for accommodating the coils (), wherein a first coil () is arranged in a slot (&#x2032;), and a second coil () is arranged in another slot (&#x2032;), characterized in that n&#x2212;1 slots (&#x2032;) are arranged between the first coil () and the second coil ().

Method for producing a stator winding of an electric machine, in particular an AC generator

Method for producing a stator winding () of an electric machine (), in particular an AC generator, wherein the stator winding () has at least n phase windings (), and one phase winding () has a plurality of successive wound coils () with coil sides () and coil side connectors (), wherein the coils () are divided into first coils () and second coils (), with a forming tool (), in which slots () are provided which are suitable for accommodating the coils (), wherein a first coil () is arranged in a slot (), and a second coil () is arranged in the same slot ().

Method for producing a stator winding of an electric machine, in particular for producing an AC generator

The invention relates to a method for producing a stator winding () of an electric machine (), in particular of an alternator, the stator winding () comprising at least n phase windings () and a phase winding () having several directly consecutively wound coils () having coil sides () and coil side connectors (), the coils () being divided into first coils () and second coils (), by means of a forming tool (), in which grooves (') suitable for accommodating the coils () are provided, a first coil () being arranged in one groove (&#x2032;) and a second coil () being arranged in another groove (&#x2032;), characterized in that n&#x2212;1 grooves (&#x2032;) are arranged between the first coil () and the second coil ().

Method for producing a stator winding of an electric machine, in particular for producing an alternator

An alternating-current generator, in particular a three-phase generator, for a motor vehicle, having a rotor including north and south poles, particularly having claw-pole fingers extending in the axial direction and alternating as north and south poles at the rotor's periphery, a stator having a magnetic core, especially laminated core, having slots and a stator winding disposed in the magnetic core's slots, the stator winding having winding overhangs that are coolable by an approximately radial air flow produced by at least one fan mounted at the rotor, the stator being situated opposite the rotor, and the stator and the rotor having defined positions relative to each other, the multiphase stator winding being made up of winding elements, at least one winding element having more than two sections inserted in slots, and at least one winding element having more than one reversal section which brings about a change in the radial position.

Alternating-current generator having a stator and a stator winding made of winding elements inserted in stator slots and a method for producing a stator of the present invention

A method for manufacturing a radial centering surface on an outer circumference of an annular laminated core of a stator comprises the steps of forming a stator with a hollow cylinder from strip-shaped laminations, preloading the stator axially before and during cutting, creating centering surfaces on an outer circumferential of the stator by using at least two cutting tools.

Radial centering surface of a stator core

A polyphase electrical machine, in particular, a polyphase generator, includes a stator which features a core body having a circumferential slot pitch, and a winding configuration having a plurality of windings. It is provided that each winding and each slot of the group of slots that extends over one pole pitch is assigned to one of the phases, and the windings have winding sections that lie in assigned slots and between which, in each case, a winding-head connection is formed, the winding-head connections of different windings being disposed radially in layers relative to each other, and the number of phases being five. A method for producing a polyphase electrical machine is also provided.

Polyphase electrical machine

A stator () is proposed for a polyphase electric machine, having a core body (), which is provided with slots (), which are situated in the radial direction with respect to an axis of rotation of the electric machine on one side of the core body () parallel to the longitudinal axis of the core body (), having a slot width (bn, bn) and a stator yoke () being provided on the opposite side, with two slots () each being separated from one another by a tooth () having a tooth width (bz, bz) and extending from a slot base () to a tooth head (), these slots () being provided to receive at least one coil winding having a plurality of coils that is electrically connected in series and are manufactured from at least one continuous wire () without interruption, the ratio (bz/hj) of the tooth width (bz) to the yoke height (hj) at the tooth head () being between 0.3 and 0.8 and/or the ratio (bz/bn) of the tooth width (bz) at the tooth head () to the slot width (bn) at the tooth head () being between 0.3 and 3, and/or the ratio (mCu(slot)/mCu(total)) of the copper mass of the wire () in the slot () to the total copper mass of the wire () being between 0.43 and 0.55.

Stator for a polyphase electric machine and method for manufacturing same

A winding device for producing a field coil including a double-layer multiple-circuit winding for an electric motor includes a drive. The drive is configured to operate upon a winding mandrel with multiple lamellas arranged to be swung radially outwardly and inwardly by the drive in order to produce the double-layer multiple-circuit winding as a plurality of winding stacks that are arranged in separate slots and electrically connected in series, in parallel or both. At least two axially-separated winding stacks can be produced at the same time by the drive.

Winding device for electric motor

A method for manufacturing a stator core () for an electric machine, in which a plurality of strip-shaped laminations () are first stacked to form an essentially block-shaped lamellas packet () that is then shaped into an annular form by means of roller bending in one of the subsequent steps so that the outer teeth are provided on the outer circumference of the lamination packets and has an axial direction (a) that corresponds to a cylinder axis (z), the annular form having axial end surfaces (), wherein in another of the subsequent steps, the annular lamination packet () is plastically deformed in the axial direction (a) only on the outer teeth () of the axial end surfaces ().

Method for production of a stator and stator produced according thereto

The manufacturing device for bending an electromagnetic element of an electrical machine, which includes a stator lamination (), has a first device () for bending the stator lamination () to form a pre-curved stator lamination and a second device () for final forming of the pre-curved stator lamination. The second device () includes a first assembly () for axially fixing and pressing the pre-curved stator lamination and a second assembly for radially centering and pressing the pre-curved stator lamination. The first device () includes a bending mandrel () around which the stator lamination () bendable, which has an outer diameter that is larger than an inner diameter of the fully bent electromagnetic element.

Manufacturing device for bending an electromanetic element of an electrical machine

The method for making a stator includes making individual strip-shaped laminas () for it; stacking the laminas () to form a stator core () with grooves () on one side extending through the core; producing a subassembly by inserting a stator winding () into the grooves (); bending the subassembly to form a cylindrical cavity so that the grooves () end in the cavity and connecting two ends () of the stator core () to each other by a welding seam () to maintain this configuration. To produce a welding seam of sufficient strength which does not exert excessive influence on magnetic properties, the welding seam depth (T) is given by T=0.5 mm*(H/mm&#x2212;1)&#xb1;&#x394;T, wherein His yoke height and &#x394;Tis a tolerance value. An electric machine including the stator made by this method is also described.

Method of making a stator of an electrical machine

A method for producing a magnetically excitable core for an electrical machine, by which in a method step (S), the core, having a substantially parallelepiped shape with slots extending parallel on one side, is furnished, into whose slots, in a method step (S), the core winding is inserted by its winding sides, and then in a method step (S), the core together with the core winding is reshaped into a cylindrical ring shape with radially inward-oriented slots, is proposed. The method is characterized by a further step, according to which in each case all winding sides that are inserted into each slot are pressed into a slot shape in a tool and reshaped before being inserted into the slot.

Method for producing a magnetically excitable core comprising a core winding for an electric machine

The method of making a two-layer lap winding () for a multiphase electrical machine includes the steps of winding a first coil unit () of a first phase winding () around a winding bar (); subsequently laying a coil connector () of the first phase winding () in a first direction and then winding at least one other coil unit () of at least one other phase winding () around the winding bar () and over the coil connector (). Subsequently a second coil unit () of the first phase winding () is wound around the winding bar () following all first coil units of all phase windings and after all coil connectors from the first coil units are laid. A method of making a stator from the two-layer lap winding () is also described.

Method of making a two-layer lap winding for a multiphase electrical machine

A stator for an electrical machine is proposed that has a stator winding () that is held by a stator core () that is formed into an annular shape. The stator core () has grooves () and teeth () on its radially inwardly oriented circumference. The stator core () is composed of layered stator sheet metal lamellae (), the direction of the layers defining an axial direction (a). It is provided that at least a first stator sheet metal lamella () has a higher flexural strength than second stator sheet metal lamellae (), the at least one first stator sheet metal lamella () having a thickness (d) in the axial direction (a) that does not exceed 4 mm.

Stator for an electrical machine

A strip-shaped lamella () for a stator () of an electric machine, having a yoke region () and a number of first teeth () that are of one piece with the yoke region () on a first side () and have first grooves () between them, and having second teeth () that are of one piece with the yoke region () on a second side () oriented away from the first side () and have second grooves () between them. The second teeth () are located at a position of the first teeth ().

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Korntal-Muenchingen, Germany

Eberhard Rau