Patents by Inventor Lars Langvardt Krogh
Lars Langvardt Krogh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240055949Abstract: Aspects of the present invention relate to a rotor arrangement (42) for a wind turbine generator (24). The rotor arrangement (42) comprises a cylindrical ring structure (46) arranged to rotate around a rotational axis.Type: ApplicationFiled: November 8, 2021Publication date: February 15, 2024Inventors: Marcin Blazniak Andreasen, Rajarao Punnamaraju Lova, Lars Langvardt Krogh, Anoop Jassal
-
Patent number: 11879439Abstract: A wind turbine drive train component (22) comprising a rotating shaft (61) with a radial seal (50) is provided. The radial seal (50) comprises a stationary part and a rotating part. The stationary part comprises a ring (51) with an inner edge and an outer edge, the inner edge being configured for contactlessly surrounding the shaft (61). The rotary part comprising a disc (52), coaxially connected to the shaft (61) for rotation therewith and comprising a flange (53) that wraps around the outer edge of the ring (51). The radial seal (50) further comprises an annular air lock gap (55) for containing an amount of lubrication fluid (64) and thereby closing off the air lock gap (55) when the rotary part rotates at a rotational speed above a predetermined threshold speed, the annular air lock gap (55) being formed by an inner surface of the flange (53), an outer part of the opposing parallel surface of the disc (52) and the outer edge of the ring (51).Type: GrantFiled: December 10, 2018Date of Patent: January 23, 2024Assignee: Vestas Wind Systems A/SInventors: Leif Christoffersen, Lars Langvardt Krogh, Lars Skifter, Thomas Paw Buus
-
Patent number: 11873794Abstract: A generator-gearbox assembly for a wind turbine includes a generator having a generator rotor, a gearbox including an output shaft, and a connection assembly. The connection assembly a hub abutment surface and a plurality of shaft bolt holes, a hub associated with the generator rotor with a first connecting portion (340) having a shaft abutment surface and at least one elongated slot extending through the first connecting portion. The number of elongated slots is less than or equal to the number of shaft bolt holes. A plurality of fasteners fixedly connect the hub to the hub abutment surface, each fastener extending through a respective elongated slot and a shaft bolt hole.Type: GrantFiled: December 3, 2019Date of Patent: January 16, 2024Assignee: Vestas Wind Systems A/SInventors: Lars Langvardt Krogh, Henrik Zaar Mannik
-
Patent number: 11799357Abstract: An electrical power generator for a wind turbine comprising: a generator housing, a stator at a radially outward position and a rotor in a radially inward position, wherein the rotor comprises a cylindrical ring structure arranged about a rotational axis, R, and defining a central hollow portion. The electrical power generator further comprises a rotor shroud attached to the generator housing and which extends about the rotational axis, R, wherein the rotor shroud includes a dome portion that extends into the central hollow portion of the rotor so as to protect the cylindrical ring structure of the rotor. Advantageously, the rotor shroud provides a tunnel-like surface that extends into the central hollow portion of the generator so as to prevent objects such as tools from contacting components of the rotor. The invention also relates to a method for 15 assembling such an electrical power generator with a rotor shroud.Type: GrantFiled: April 3, 2020Date of Patent: October 24, 2023Inventors: Lars Langvardt Krogh, Peter Mongeau, Joris Kofman
-
Patent number: 11767823Abstract: Apparatus comprising a first shaft and a second shaft supported in a substantially concentric relationship so that they are able to rotate relative to one another about a rotational axis (R); wherein one of the first and second shafts passes through a bore defined in the other of the first and second shafts; a seal arrangement between the first and second shafts, said seal arrangement being locked from rotational movement relative to said first shaft; wherein the seal arrangement comprises a first portion that is rotatably mounted on the second shaft by a bearing and a second portion that is configured to seal against a miming surface defined by the second shaft. Advantageously, since the seal arrangement is rotatably mounted on the same shaft against which it forms a seal, the sealing arrangement accommodates for alignment errors between the first and second shafts.Type: GrantFiled: October 2, 2020Date of Patent: September 26, 2023Assignee: Vestas Wind Systems A/SInventor: Lars Langvardt Krogh
-
Patent number: 11746750Abstract: There is provided a method (100) of installing a pitch tube (27) into an electrical power generator (24) for a wind turbine, the method comprising: installing (105a) the pitch tube (27) so that it is coaxial with a rotational axis (R) of the generator (24); supporting (105b) a bearing arrangement (50) associated with the pitch tube (27) at an end of the generator (24) using one or more primary supports (52), wherein each of the primary supports (52) comprises a first end (58) connected to the bearing arrangement (50) and a second end (60) connected to a component (32) associated with a rotating reference frame of the generator (24); and supporting (110) the bearing arrangement (50) using one or more secondary supports (54), wherein each of the secondary supports (54) comprises a first end (62) connected to the bearing arrangement (50) and a second end (64) connected to a component (42) associated with a stationary reference frame of the generator (24).Type: GrantFiled: April 21, 2020Date of Patent: September 5, 2023Assignee: Vestas Wind Systems A/SInventors: Lars Langvardt Krogh, Rolf Nyborg Broge
-
Publication number: 20230041688Abstract: The invention relates to a generator for a wind turbine including a housing of substantially cuboidal form within which is mounted a stator. The stator has one or more multi-phase windings and a bus ring is provided for conveying electrical power from the windings to power take-off modules. One end of the power take-off modules is connected to the bus ring, and the other end of the modules has a plurality of power take-off interfaces for connection to power take-off cables. The distal ends of the power take-off modules are located in the corners of the cuboidal generator housing.Type: ApplicationFiled: October 25, 2022Publication date: February 9, 2023Inventors: Peter Mongeau, Lars Langvardt Krogh, Mustafa Gündüz, Xiaolu Ding, Ulrich Meinekat, Nicole Farell
-
Patent number: 11522395Abstract: In a first aspect of the invention there is provided a generator for a wind turbine. The generator includes a stator which defines a central axis of the generator, the stator being mounted within a frame by a stator mounting system. The stator mounting system includes a plurality of stator mounting modules, each stator mounting module being removably attached to the stator and removably attached to the frame. The stator mounting system is arranged so that one or more of the stator mounting modules can be replaced or repositioned with the stator mounted in situ within the frame.Type: GrantFiled: January 8, 2020Date of Patent: December 6, 2022Assignee: Vestas Wind Systems A/SInventors: Peter Mongeau, Lars Langvardt Krogh
-
Patent number: 11496018Abstract: The invention relates to a generator for a wind turbine including a housing of substantially cuboidal form within which is mounted a stator. The stator has one or more multi-phase windings and a bus ring is provided for conveying electrical power from the windings to power take-off modules. One end of the power take-off modules is connected to the bus ring, and the other end of the modules has a plurality of power take-off interfaces for connection to power take-off cables. The distal ends of the power take-off modules are located in the corners of the cuboidal generator housing.Type: GrantFiled: January 8, 2020Date of Patent: November 8, 2022Assignee: Vestas Wind Systems A/SInventors: Peter Mongeau, Lars Langvardt Krogh, Mustafa Gündüz, Xiaolu Ding, Ulrich Meinekat, Nicole Farell
-
Publication number: 20220307481Abstract: Apparatus comprising a first shaft and a second shaft supported in a substantially concentric relationship so that they are able to rotate relative to one another about a rotational axis (R); wherein one of the first and second shafts passes through a bore defined in the other of the first and second shafts; a seal arrangement between the first and second shafts, said seal arrangement being locked from rotational movement relative to said first shaft; wherein the seal arrangement comprises a first portion that is rotatably mounted on the second shaft by a bearing and a second portion that is configured to seal against a miming surface defined by the second shaft. Advantageously, since the seal arrangement is rotatably mounted on the same shaft against which it forms a seal, the sealing arrangement accommodates for alignment errors between the first and second shafts.Type: ApplicationFiled: October 2, 2020Publication date: September 29, 2022Applicant: Vestas Wind Systems A/SInventor: Lars Langvardt Krogh
-
Publication number: 20220263359Abstract: A stator mount and a tool for adjusting the position of a stator mount of a stator of a generator of a wind turbine. The stator mount comprises a support member having a plurality of elongate both holes which provide adjustability between the stator mount and the frame of a generator housing, or between separate components of the stator mount itself. The stator mount may comprise one or more adjustment devices for adjusting the position of the stator mount in use. A tool is provided which may be used to adjust the position of the stator mounts. The tool attaches to the frame of the generator and comprises one or more adjustment devices for adjusting the position of the stator in use.Type: ApplicationFiled: June 24, 2020Publication date: August 18, 2022Inventors: Peter Mongeau, Henrik Zaar Mannik, Lars Langvardt Krogh
-
Publication number: 20220228563Abstract: There is provided a method (100) of installing a pitch tube (27) into an electrical power generator (24) for a wind turbine, the method comprising: installing (105a) the pitch tube (27) so that it is coaxial with a rotational axis (R) of the generator (24); supporting (105b) a bearing arrangement (50) associated with the pitch tube (27) at an end of the generator (24) using one or more primary supports (52), wherein each of the primary supports (52) comprises a first end (58) connected to the bearing arrangement (50) and a second end (60) connected to a component (32) associated with a rotating reference frame of the generator (24); and supporting (110) the bearing arrangement (50) using one or more secondary supports (54), wherein each of the secondary supports (54) comprises a first end (62) connected to the bearing arrangement (50) and a second end (64) connected to a component (42) associated with a stationary reference frame of the generator (24).Type: ApplicationFiled: April 21, 2020Publication date: July 21, 2022Inventors: Lars Langvardt Krogh, Rolf Nyborg Broge
-
Publication number: 20220200402Abstract: An electrical power generator for a wind turbine comprising: a generator housing, a stator at a radially outward position and a rotor in a radially inward position, wherein the rotor comprises a cylindrical ring structure arranged about a rotational axis, R, and defining a central hollow portion. The electrical power generator further comprises a rotor shroud attached to the generator housing and which extends about the rotational axis, R, wherein the rotor shroud includes a dome portion that extends into the central hollow portion of the rotor so as to protect the cylindrical ring structure of the rotor. Advantageously, the rotor shroud provides a tunnel-like surface that extends into the central hollow portion of the generator so as to prevent objects such as tools from contacting components of the rotor. The invention also relates to a method for 15 assembling such an electrical power generator with a rotor shroud.Type: ApplicationFiled: April 3, 2020Publication date: June 23, 2022Inventors: Lars Langvardt Krogh, Peter Mongeau, Joris Kofman
-
Publication number: 20220085680Abstract: The invention relates to a generator for a wind turbine comprising a housing of substantially cuboidal form within which is mounted a stator. The stator has one or more multi-phase windings and a bus ring is provided for conveying electrical power from the windings to power take-off modules. One end of the power take-off modules are connected to the bus ring, and the other end of the modules have a plurality power take-off interfaces for connection to power take-off cables. The distal ends of the power take-off modules are located in the corners of the cuboidal generator housing.Type: ApplicationFiled: January 8, 2020Publication date: March 17, 2022Inventors: Peter Mongeau, Lars Langvardt Krogh, Mustafa Gündüz, Xiaolu Ding, Ulrich Meinekat, Nicole Herrmann
-
Publication number: 20220069644Abstract: In a first aspect of the invention there is provided a generator for a wind turbine. The generator comprises a stator which defines a central axis of the generator, the stator being mounted with-in a frame by a stator mounting system. The stator mounting system comprises a plurality of stator mounting modules, each stator mounting module being removably attached to the stator and removably attached to the frame. The stator mounting system is arranged so that one or more of the stator mounting modules can be replaced or repositioned with the stator mounted in situ within the frame.Type: ApplicationFiled: January 8, 2020Publication date: March 3, 2022Inventors: Peter Mongeau, Lars Langvardt Krogh
-
Publication number: 20220069649Abstract: A generator rotor assembly (42) comprises a cylindrical ring structure (46) defining a central hollow portion and arranged to rotate around a rotational axis. The cylindrical ring structure (46) comprises a plurality of permanent magnet packages (48) arranged coaxially around the rotational axis, the permanent magnet packages (48) comprising a plurality of coaxially stacked ring-shaped segmented layers (80), a plurality of tie rod holes (86) and a plurality of tie rods (54). The coaxially stacked ring-shaped segmented layers (80) comprise a plurality of contiguous segment sheets (82) arranged around the rotational axis to form the ring-shaped layer, the stacked layers (80) being staggered such that segment breaks between two contiguous segment sheets (82) in one of the layers are angularly offset with respect to segment breaks between two contiguous segment sheets (82) in an adjacent layer.Type: ApplicationFiled: January 9, 2020Publication date: March 3, 2022Inventors: Peter Mongeau, Lars Langvardt Krogh, Henrik Zaar Mannik, Jens Bergmann
-
Publication number: 20220018335Abstract: A generator-gearbox assembly for a wind turbine A generator-gearbox assembly (200) for a wind turbine (100) comprising a generator (240) having a generator rotor (245); a gearbox (220) comprising an output shaft (230); and a connection assembly (300). The connection assembly (300) comprises a hub abutment surface (310), provided at an end (235) of the output shaft (230) and a plurality of shaft bolt holes (315); a hub (320) associated with the generator rotor (245) and comprising a body (325) and a first connecting portion (340) having a shaft abutment surface (345) facing towards the hub abutment surface (310) and at least one elongated slot (360) extending through the first connecting portion (340). The number of elongated slots (360) is less than or equal to the number of shaft bolt holes (315). A plurality of fasteners fixedly connect the hub (320) to the hub abutment surface (310), each fastener extending through a respective elongated slot (360) and a shaft bolt hole (315).Type: ApplicationFiled: December 3, 2019Publication date: January 20, 2022Inventors: Lars Langvardt Krogh, Henrik Zaar Mannik
-
Publication number: 20210102528Abstract: A wind turbine drive train component (22) comprising a rotating shaft (61) with a radial seal (50) is provided. The radial seal (50) comprises a stationary part and a rotating part. The stationary part comprises a ring (51) with an inner edge and an outer edge, the inner edge being configured for contactlessly surrounding the shaft (61). The rotary part comprising a disc (52), coaxially connected to the shaft (61) for rotation therewith and comprising a flange (53) that wraps around the outer edge of the ring (51). The radial seal (50) further comprises an annular air lock gap (55) for containing an amount of lubrication fluid (64) and thereby closing off the air lock gap (55) when the rotary part rotates at a rotational speed above a predetermined threshold speed, the annular air lock gap (55) being formed by an inner surface of the flange (53), an outer part of the opposing parallel surface of the disc (52) and the outer edge of the ring (51).Type: ApplicationFiled: December 10, 2018Publication date: April 8, 2021Inventors: Leif Christoffersen, Lars Langvardt Krogh, Lars Skifter, Thomas Paw Buus