Siemens Aktiengesellschaft

Nordex Energy Gmbh

Flender Gmbh

Axel Möhle

Maria Bade

Ludwig Erd

Joachim Mucha

Jens Dahl Jensen

Ralph Reiche

Oliver Stier

Heiner Bayer

Oliver Memminger

Ralf Martin Dinter

Andreas Jöckel

Norbert Schönbauer

Karsten Brach

Manuela Schneider

Kurt Tischler

Christian Meyer

Horst Kümmlee

Hartmut Walter

Ulrich Hartmann

Frank Seibicke

Martin Junge

Christian Schiller

Peter Petereit

Friedrich Schöberl

Andreas Bethge

Alfons Böing

Jürgen Draber

Irene Olbrich

Rüdiger Schäfer

Gordon Trogisch

Christoph Balzer

Andre Schlawitz

Torsten Metzner

Gunther Elender

Ines Junge

Arne Grüning

Wolf Krieger

Kornel Feher

Daniel Kermas

Martin Kristl

Wilfried Luchs

Marian Rakowicz

Uwe Ritschel

Robert Gutzmer

Christian Brammer

Joachim Risse

Roland Zeichfüßl

A magnetic steel sheet including a layer adjoining at least one of a top side and bottom side of the magnetic metal sheet. The layer includes a metal oxide containing titanium oxide or tantalum oxide and the layer adjoins the magnetic steel sheet along a diffusion zone into which the titanium or tantalum of the metal oxide has diffused into the magnetic steel sheet. The diffusion zone is produced on at least one of a top surface and a bottom surface of the magnetic steel sheet and the diffusion layer diffuses one of tantalum and titanium as metal into the at least one surface. The metal of the at the at least one surface is converted into an associated metal oxide to form the layer including the metal oxide, and a residual content of the metal of the metal oxide remains in the diffusion zone.

Magnetic steel sheet having a layer improving the electrical insulation and method for the production thereof

In a method an inner segment is first pre-assembled on each of a number of outer segments by at least one fixing element, so as to produce a plurality of segment modules having each a predetermined air gap between the inner segment and the outer segment. The inner segments and the outer segments are assigned to the rotor or stator of the electrical machine. The inner segments of the plurality of segment modules are fastened to an inner assembly device (for example a hub). The outer segments of the plurality of segment modules are fastened to an outer assembly device (for example a supporting structure). Finally, the fixing elements between the inner segments and the outer segments are removed.

Method for assembling a segmented electrical machine while maintaining gaps between segments

A wind power generator with a closed internal cooling circuit has a stator that is implemented as sheet metal and includes a winding system which forms winding heads at the end faces of the stator. The stator is enclosed by a cooling jacket at least in the region of the laminated core, wherein permanent magnets of a rotor are disposed on a magnet wheel jacket embodied as a hollow shaft. The magnet wheel jacket is connected in a rotationally fixed manner to a shaft or shaft stubs by way of support elements at its end faces, wherein in its interior the hollow shaft has at least one tube whose lateral surface area runs at an equidistant clearance from the magnet wheel jacket. Blowers are mounted at the end faces of the rotor.

Wind power generator with internal cooling circuit

An active part of an electrical machine has a carrier, a plurality of coils which are arranged on the carrier and which each include a plurality of sub-conductors and a winding head area, in which the coils project out of the carrier in a curved shape, respectively and are connected to one another. At least one of the plurality of coils has a coil arc in the winding head area, and the center line of the coil runs in one plane in the coil arc. The sub-conductors of one coil run parallel to the plane in the coil arc of the coil and themselves in each case form sub-conductor arcs. The vertices of the sub-conductor arcs of the coil form a line of inclination which runs at an angle to the plane.

Active part of an electrical machine having inclined coils in the winding head area

A rotor for an electrical machine has a rotor body and permanent magnets arranged on the circumference of the rotor body, wherein those areas of the circumference of the rotor body which are covered by the permanent magnets have at least one recess and/or that side of the permanent magnets which faces the circumference of the rotor body has at least one recess. Each recess is configured as a slot which extends in parallel relationship to a circumference-proximal side of the permanent magnets. Removably insertable in the recesses are ferromagnetic bars to allow removal of the permanent magnets.

Permanent magnet rotor for an electrical machine

The invention relates to methods for manufacturing a rotor () for an electric machine (), having the following method steps: a) manufacturing a magnetic element () by bonding permanent magnets ('&#x2033;) by means of a first adhesive, each permanent magnet (&#x2032;&#x2033;) having a side with a magnetic North pole (N) and a side with a magnetic South pole (S), the permanent magnets (&#x2032;&#x2033;) being arranged during bonding such that the sides of the magnetic North poles (N) or the sides of the magnetic South poles (S) form a common underside (&#x2032;&#x2033;) of the magnetic elements (), the first adhesive having a hard consistency in the cured state; and b) bonding the underside of the magnetic element () to a yoke () by means of a second adhesive, the second adhesive being soft and elastic in the cured state. Furthermore, the invention relates to an associated rotor. The invention permits rational manufacture of a rotor having a permanent magnet for a machine, the permanent magnets being integrally fixed to the yoke of the rotor with high reliability.

Rotor and method for manufacturing a rotor of an electric machine

A segmented annular stator for a dynamo-electric machine is disclosed which simplifies transport and assembly of the machine. The segment has a cross section essentially shaped as a circular arc and includes a first and a second segment boundary configured for attachment to an additional segment, a corresponding coil associated with each phase of a three-phase system, a first conductor, and a second conductor. The first conductor is connected to the second conductor via an end connection in an area of end windings, such that a first coil associated with a first phase surrounds second and third coils associated with second and third phases of the three-phase system.

Winding plan for a segmented stator of a dynamo-electric machine

The invention relates to a compressor system (), particularly for conveying gases or gas/oil mixtures in the offshore area, with a seawater-tight housing () with at least one access opening () for gases or gas/oil mixtures which are to be compressed, and with at least one outlet opening () for the compressed gases or gas/oil mixtures. In the housing (), a compressor () is disposed, which is connected at the inlet side to the access opening () and, at the outlet side, to the outlet opening (). An electric motor (), which has a stator assembly () and a rotor assembly () for driving the compressor (), is disposed in the housing (). According to the invention, the stator assembly () can be cooled over an inner side (GI) of the housing () of the compressor system ().

Compressor system for underwater use having a stator packet with an annular cooling chamber

The invention relates to a direct drive for large-scale drives, comprising a stator () which is configured, when seen from the peripheral direction, by a plurality of segments (), each having a self-contained winding arrangement, and a rotor which is configured from segments. The segments of the rotor are located on working elements that rotate with the rotor, and interact electromagnetically with a winding system of the stator (). The inventive drive is especially suitable for ring motors and tube mill drives.

Direct drive for large-scale drives

The electrical machine () has a stator () and a rotor (), wherein the stator () has stator slots (), in which a stator winding () with redundant and at least three-phase winding systems (U, V, W; U, V, W) is laid. According to the invention, the electrical machine () has a large number of poles with a pole number (PZ) of at least four, a number (NZ) of stator slots () which corresponds to the product of a phase number and the square of the pole number (PZ) of the electrical machine () or an integral multiple thereof, and a number of winding systems (U, V, W; . . . ; U, V, W) which corresponds to the pole number (PZ). In each case a number of in-phase winding sections (U-U, V-V, W-W) which corresponds to the pole number (PZ) are combined to form a group of phase winding sections (PU, PV, PW). The phase winding section groups (PU, PV, PW) are laid, phase-cyclically and pole-for-pole, in the stator slots () of the stator (). Depending on the pole and phase winding section group (PU, PV, PW), in each case are slot region (N-N) which corresponds to the pole number (PZ) is provided. The slot assignment takes place in such a way that the in-phase winding sections (U-U, V-V, W-W) are distributed, corresponding to their numbering, uniformly amongst the slot positions (N, . . . , N) of the associated slot regions (N-N).

Electrical machine, in particular a synchronous motor, with redundant stator windings

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Berlin, Germany

Axel Möhle