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公开(公告)号：US20210126503A1
公开(公告)日：2021-04-29
申请号：US17076382
申请日：2020-10-21
发明人： Erik Groendahl , Subhra Samanta , Arwyn Thomas
摘要： 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.
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公开(公告)号：US11592006B2
公开(公告)日：2023-02-28
申请号：US16487123
申请日：2017-11-27
发明人： Erik Groendahl , Klaus Wadsholt
摘要： A wind turbine including a hub to which the rotor blades are arrangeable, wherein the hub is rotatable around a rotating axis is provided. The wind turbine further includes a generator including a rotor arrangement and a stator arrangement, wherein the rotor arrangement and the stator arrangement are rotatable with respect to each other around the rotational axis. Further the rotor arrangement is coupled to the hub. The wind turbine further includes a grounding system which is fixable to a nacelle of the wind turbine, wherein the grounding system is configured for transferring lightning current between the rotor arrangement and the nacelle and for providing an EMF shielding of the generator, wherein the generator is arranged along the rotational axis of the hub between the hub and the grounding system.
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公开(公告)号：US20210301410A1
公开(公告)日：2021-09-30
申请号：US17209322
申请日：2021-03-23
发明人： Erik Groendahl , Mogens Lund , Jan Thisted
摘要： Provided is an electrolysis arrangement including a plurality of electrolytic units, wherein each electrolytic unit includes an electrolytic cell and an AC-DC power converter configured to provide DC power for that electrolytic cell; a plurality of electrolytic assemblies, wherein each electrolytic assembly includes a number of electrolytic units; at least one wind turbine including an electrical generator with a number of armature windings, wherein each armature winding provides AC power to one electrolytic assembly; and a converter unit controller configured to regulate the AC-DC power converters of the electrolytic units on the basis of the power output of an electrical generator. A method of operating such an electrolysis arrangement is also provided.
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公开(公告)号：US11632007B2
公开(公告)日：2023-04-18
申请号：US17076382
申请日：2020-10-21
发明人： Erik Groendahl , Subhra Samanta , Arwyn Thomas
摘要： 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.
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公开(公告)号：US20210375541A1
公开(公告)日：2021-12-02
申请号：US17290893
申请日：2019-10-30
摘要： Provided is an electrical machine including a rotor and a stator with at least one coil, wherein the coil includes one or more windings of one or more tape-shaped conductors wherein the or each conductor has a longitudinal axis, wherein the coil includes two opposing straight sections and two opposing arc-shaped coil head sections, wherein the coil includes at least two torsion sections, in which the or each winding is twisted around the longitudinal axis of the or each conductor, so that a width direction of the one or each conductors in at least one of the straight sections is parallel or essentially parallel to a direction of a magnetic field generated or generatable by the rotor penetrating the at least one straight section.
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公开(公告)号：US20210083533A1
公开(公告)日：2021-03-18
申请号：US17048197
申请日：2019-04-03
发明人： Ziad Azar , Erik Groendahl , Subhra Samanta , Arwyn Thomas
摘要： Provided is an electric generator including a stator including: a stator yoke a plurality of teeth, a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end. The stator further includes a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each coil housed in the bottom portion of a first slot of the plurality of slots being connected to another respective coil housed in the top portion of a second slot of the plurality of slots.
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7.发明申请公开(公告)号：US20190393751A1
公开(公告)日：2019-12-26
申请号：US16443044
申请日：2019-06-17
发明人： Ziad Azar , Erik Groendahl , Subhra Samanta , Arwyn Thomas
摘要： 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.
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公开(公告)号：US11431217B2
公开(公告)日：2022-08-30
申请号：US17270477
申请日：2019-07-26
摘要： Provided is an electric generator having a stator, a rotor, a plurality of coils including conductors shaped as a tape, the stator extending axially along a longitudinal axis between a first axial end and a second axial end, the stator including a plurality of slots, the plurality of slots being circumferentially distributed around a longitudinal axis of the stator, each of the coils respectively comprising: two slot portions respectively housed in two slots of the stator, two end-windings axially protruding from stator at the first axial end and a second axial end.
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公开(公告)号：US20210328475A1
公开(公告)日：2021-10-21
申请号：US17270477
申请日：2019-07-26
摘要： Provided is an electric generator having a stator, a rotor, a plurality of coils including conductors shaped as a tape, the stator extending axially along a longitudinal axis between a first axial end and a second axial end, the stator including a plurality of slots, the plurality of slots being circumferentially distributed around a longitudinal axis of the stator, each of the coils respectively comprising: two slot portions respectively housed in two slots of the stator, two end-windings axially protruding from stator at the first axial end and a second axial end.
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公开(公告)号：US20210131404A1
公开(公告)日：2021-05-06
申请号：US16487123
申请日：2017-11-27
发明人： Erik Groendahl , Klaus Wadsholt
摘要： A wind turbine including a hub to which the rotor blades are arrangeable, wherein the hub is rotatable around a rotating axis is provided. The wind turbine further includes a generator including a rotor arrangement and a stator arrangement, wherein the rotor arrangement and the stator arrangement are rotatable with respect to each other around the rotational axis. Further the rotor arrangement is coupled to the hub. The wind turbine further includes a grounding system which is fixable to a nacelle of the wind turbine, wherein the grounding system is configured for transferring lightning current between the rotor arrangement and the nacelle and for providing an EMF shielding of the generator, wherein the generator is arranged along the rotational axis of the hub between the hub and the grounding system.
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