Siemens Gamesa Renewable Energy A/s

Siemens Aktiengesellschaft

Subhra Samanta

Arwyn S Thomas

Ziad Azar

Erik Groendahl

Hans-Joergen Thougaard

Uffe Eriksen

Zhan-Yuan Wu

Nuno Miguel Amaral Freire

Richard Edward Clark

Alexander Duke

Thomas Tøttrup Jensen

Anders Vorm Skougaard

Gnanasekar Natarajan

Rajesh Kumar

An electrical machine is provided including a stator with a stator core, a plurality of stator teeth protruding radially from the stator core, and a plurality of stator coils, wherein each stator coil is wound around at least one stator tooth of the stator and includes at least one coil head protruding in axial direction beyond the stator core, wherein the stator includes a stator extension structure with a plurality of magnetic flux-guiding extension segments each protruding axially from a stator tooth into an area surrounded by at least one of the coil heads.

Electrical machine, stator extension element and wind turbine

Provided is an electric generator including a stator including:

Coil formation in an electric machine with concentrated windings

A stator assembly including a frame structure having a stator teeth being circumferentially distributed around a longitudinal axis, wherein in between respective two neighboring stator teeth there is formed one stator slot; a winding system having a plurality of electric windings, wherein respectively one electric winding is wound around at least one stator tooth and is partially accommodated within two stator slots and each electric winding comprises an end winding portion which axially protrudes from the frame structure; and an insulation arrangement having a plurality of electric insulation devices, each insulation device surrounding a part of one electric winding is provided. Each insulation device includes an inner insulation portion being accommodated within the respective stator slot and an outer insulation portion protruding from the frame structure and surrounding a part of the respective end winding portion. The outer insulation portion includes an outer surface which includes elevated surface portions.

Stator assembly comprising electrical insulation devices having an outer surface with elevated surface portions

Provided is a covering element for covering a slot between two adjacent teeth of an electromagnetic machine, a stator for an electromagnetic machine and a method of forming a covering element. The covering element comprises a first sub-element and a second sub-element. The first sub-element and the second sub-element are arranged adjacent to each other in a first direction. Further, the second sub-element is made of a different material than the first sub-element.

Covering element for covering a slot between two adjacent tooth tips of an electromagnetic machine

A method of manufacturing a segment for a stator of an electrical generator includes manufacturing a segment body circumferentially extending between at least a first end slot and a second end slot, providing the coil concentrated winding in the slots of the segment body, providing a first pressure plate a second pressure plate for respectively holding the coil in the first end slot and the second end slot, applying vacuum pressure impregnation to the coil concentrated winding in the slots of the segment body, and removing the first pressure plate and the second pressure plate for obtaining the segment.

Segmented stator for a direct drive electrical generator

Provided is a stator assembly including: i) a first stator segment, ii) a second stator segment, wherein the first stator segment and the second stator segment being arranged along a circumferential direction of the stator assembly, and wherein the first stator segment and the second stator segment are located adjacent to each other and are separated by a gap. The stator assembly further including: iii) at least one first coil set of a first multi-phase coil system, and iv) at least one second coil set of a second multi-phase coil system, wherein each coil set includes at least one coil for each phase of the respective multi-phase coil system. Each stator segment includes a first busbar arrangement having first busbar elements, and a second busbar arrangement having second busbar elements, each busbar element being assigned to one phase.

Segmented stator assembly with flexible electrical connections, generator and wind turbine with such a stator assembly

A bearing system for a wind turbine with a generator with an outer rotor, the bearing system including: an inner bearing ring, an outer bearing ring, a first electrical insulation element, a second electrical insulation element, a plurality of roller elements, a first metal element and a second metal element is provided. Therein, the roller elements are arranged at an inner volume between the inner bearing ring and outer bearing ring. The first electrical insulation element includes the first metal element. The second electrical insulation element includes the second metal element. The first electrical insulation element is arranged at least partially around the inner bearing ring in order to provide an electrical shielding to the inner of the bearing system and the second electrical insulation element is arranged at least partially around the outer bearing ring in order to provide an electrical shielding to the inner of the bearing system.

Growing community of inventors

Ikast, Denmark

Subhra Samanta