NL2029455B1 - a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine - Google Patents
a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine Download PDFInfo
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- NL2029455B1 NL2029455B1 NL2029455A NL2029455A NL2029455B1 NL 2029455 B1 NL2029455 B1 NL 2029455B1 NL 2029455 A NL2029455 A NL 2029455A NL 2029455 A NL2029455 A NL 2029455A NL 2029455 B1 NL2029455 B1 NL 2029455B1
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- Prior art keywords
- rotor
- wind turbine
- transverse axis
- axis wind
- support structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having a plurality of rotors
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A transverse axis wind turbine (1) arranged for being connected to a support structure (3) such as a building or a mast, wherein said transverse axis wind turbine (1) comprises: - a first connecting element (5) arranged for connecting said transverse axis wind turbine (1) to said support structure (3); - a second connecting element (7) arranged for connecting said transverse axis wind turbine (1) to said support structure (3); - a first rotor (9) arranged to be propelled by air flow and provided with first rotor blades (11) and a first rotor axis (13), and rotatably connected, via said first rotor axis (13), at a first side of said first rotor (9), to said first connecting element (5), and at a second side of said first rotor (9), opposite to said first side of said first rotor (9), to said second connecting element (7). An assembly (101) of a support structure (3), such as a building or a mast, and the transverse axis wind turbine (1).
Description
Title: a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine
According to a first aspect, the present disclosure relates to a transverse axis wind turbine.
According to a second aspect, the present disclosure relates to an assembly comprising the transverse axis wind turbine according the first aspect of the present disclosure.
A transverse axis wind turbine is a type of wind turbine wherein the rotor axis is set transverse to the wind, but not necessarily vertically. Components of a known transverse axis wind turbine such as a generator and, if provided, a gearbox are located at the base of the transverse axis wind turbine. This arrangement allows the generator and gearbox to be located close to the ground, facilitating service and repair.
An advantage of transverse axis wind turbines is that there is no need to point the rotor into the wind, which removes the need for wind-sensing and orientation mechanisms.
The transverse axis wind turbine according to the present disclosure is arranged for being connected to a support structure such as a building or a mast. The transverse axis wind turbine may for example be connected to a facade of the building.
The transverse axis wind turbine comprises: - a first connecting element arranged for connecting said transverse axis wind turbine to said support structure; - a second connecting element arranged for connecting said transverse axis wind turbine to said support structure; - a first rotor arranged to be propelled by air flow and provided with first rotor blades and a first rotor axis, and rotatably connected, via said first rotor axis, at a first side of said first rotor, to said first connecting element, and at a second side of said first rotor, opposite to said first side of said first rotor, to said second connecting element.
By providing the first connecting element and the second connecting element at opposite sides of the first rotor, a relatively robust wind turbine may be realised at relatively low cost while allowing a relatively large power output. The present disclosure relies at least partly on the insight that a known transverse axis wind turbine is supported, by a mast, only at a lower side of the wind turbine. Supporting the wind turbine only at one side may require a relatively robust and costly construction of the wind turbine and the mast to allow for a relatively large power output.
The first and second connecting elements provide for a relatively stable positioning of the first rotor relative to the support structure even for a relatively large first rotor when being propelled by a relatively strong wind. Maintaining the position of the first rotor relatively stable allows for a relatively safe operation of the wind turbine while avoiding or reducing the risk of undesired movements of the first rotor relative to a nominal position of the first rotor relative to the support structure.
Within the present context, undesired movements are to be understood as movements of the first rotor in a direction transverse to the rotor axis such as a bending of the rotor axis caused by the air flow acting on the first rotor.
In an embodiment of the transverse axis wind turbine according to the present invention, said transverse axis wind turbine further comprises: - a first electrical generator arranged for generating electricity, wherein said first rotor axis is coupled to said first electrical generator for generating said electricity upon rotation of said first rotor about said first rotor axis. Preferably, said first electrical generator is provided at a side of said first connecting element facing away from said first rotor.
Coupling the rotor axis to the electrical generator provides the benefit that the aerodynamic forces are translated to rotation of the generator thereby creating electricity.
In another embodiment of the transverse axis wind turbine according to the present invention, said transverse axis wind turbine further comprises: - a third connecting element arranged for further connecting said transverse axis wind turbine to said support structure; - a second rotor arranged to be propelled by air flow and provided with second rotor blades and a second rotor axis, and rotatably connected, via said second rotor axis, at a first side of said second rotor, to said second connecting element, and at a second side of said second rotor, opposite to said first side of said second rotor, to said third connecting element.
This arrangement provides the possibility that the second rotor can be positioned close to the first rotor in a relatively stable position. The second connecting element and third connecting element provide for a relatively stable positioning of the second rotor relative to the support structure even for a relatively large second rotor when being propelled by a relatively strong wind. Maintaining the position of the second rotor relatively stable allows for a relatively safe operation of the wind turbine while avoiding or reducing the risk of undesired movements of the second rotor relative to a nominal position of the second rotor relative to the support structure.
In another embodiment of the transverse axis wind turbine according to the present invention, said second rotor axis and said first rotor axis are connected to each other such that said second rotor axis is coupled, via said first rotor axis, to said first electrical generator for generating said electricity upon rotation of said second rotor about said second rotor axis.
Coupling said second rotor axis to the first rotor axis is beneficial for generating electricity using a first electrical generator capable of a relatively large output power.
Preferably, said second rotor axis and said first rotor axis are releasably connected via a first coupling element, preferably a resilient coupling element arranged for resiliently coupling said first rotor axis to said second rotor axis.
A benefit of releasably coupling the second rotor axis and the first rotor axis is that the second rotor can be easily decoupled (and removed) from the transverse axis wind turbine, for example for maintenance purposes.
In another embodiment of the transverse axis wind turbine according to the present invention, said transverse axis wind turbine further comprises: - a third rotor arranged to be propelled by air flow and provided with third rotor blades and a third rotor axis, and rotatably connected, via said third rotor axis, at a first side of said third rotor, to said first connecting element, and at a second side of said first rotor, opposite to said first side of said third rotor, to said second connecting element.
This arrangement provides the possibility that the third rotor can be positioned close to the first rotor in a relatively stable position. The first connecting element and second connecting element provide for a relatively stable positioning of the third rotor relative to the support structure even for a relatively large first rotor and/or third rotor when being propelled by a relatively strong wind. Maintaining the position of the third rotor relatively stable allows for a relatively safe operation of the wind turbine while avoiding or reducing the risk of undesired movements of the third rotor relative to a nominal position of the third rotor relative to the support structure.
In an embodiment of said transverse axis wind turbine wherein said support structure is formed by a mast, said transverse axis wind turbine is arranged for providing said third rotor and said first rotor at opposite sides of said mast.
Preferably, said transverse axis wind turbine further comprises: - a second electrical generator arranged for generating electricity, wherein said third rotor axis is coupled to said second electrical generator for generating said electricity upon rotation of said third rotor about said third rotor axis. Preferably, said second electrical generator is provided at a side of said first connecting element facing away from said third rotor.
Coupling the third rotor axis to the second electrical generator provides the benefit that the aerodynamic forces are translated to rotation of the second generator thereby creating electricity. 5 In another embodiment of the transverse axis wind turbine according to the present invention, said first connecting element and said second connecting element are spaced apart in the range of 3 meter to 15 meter, preferably are spaced apart in the range of 5 meter to 8 meter.
This allows for placing rotors in between the first connecting element and the second connecting element that may differ in length.
Preferably, a diameter of said first rotor, in a direction perpendicular to said rotor axis, is in the range of 3 meter to 15 meter, more preferably in the range of 5 meter to 8 meter.
The possibility of rotors having different diameters has the benefit that the transverse axis wind turbine can already be used at relatively low wind speeds.
In another embodiment of the transverse axis wind turbine according to the present invention, said transverse axis wind turbine comprises a fourth connecting element arranged for connecting said first electrical generator to said support structure.
The fourth connecting element provides for a relatively stable positioning of the first electrical generator relative to the support structure even for a relatively large first electrical generator. Maintaining the position of the first electrical generator relatively stable allows for a relatively safe operation of the wind turbine while avoiding or reducing the risk of undesired movements of the first electrical generator relative to a nominal position of the first electrical generator relative to the support structure.
In the assembly of the support structure, such as a building or a mast, and said transverse axis wind turbine according to the first aspect of the invention, said transverse axis wind turbine is connected to said support structure via said first connecting element and said second connecting element, preferably, said first rotor axis is vertical.
Preferably, said support structure is a mast having a height in the range of 50 meter to 300 meter, more preferably in the range of 200 meter to 300 meter.
The benefit of a high support structure is that more electricity can be generated, because at higher elevation, there is often more and stronger wind. In case there is a limit to the maximum height of the wind turbine, for example due to regional regulations, a support structure lower in height is also possible.
Embodiments of the transverse axis wind turbine and the assembly according to the present disclosure will next be explained by means of the accompanying schematic figures, wherein:
Fig. 1 shows a transverse axis wind turbine according to the present disclosure;
Fig. 2 shows a first rotor of the transverse axis wind turbine of Fig. 1;
Fig. 3A and Fig. 3B show a bottom view and a top view of the rotor of Fig. 2;
Fig. 4 shows an assembly of a mast and multiple transverse axis wind turbines according to the present disclosure.
A transverse axis wind turbine 1 according to the present disclosure, as shown in Fig. 1, is arranged for being connected to a support structure 3, such as a building or a mast, and comprises a first connecting element 5 arranged for connecting the transverse axis wind turbine 1 to the support structure 3 and a second connecting element 7 arranged for connecting the transverse axis wind turbine 1 to the support structure 3.
The first connecting element 5 and the second connecting element 7 are spaced apart in the range of 3 meter to 15 meter, preferably they are spaced apart in the range of 5 meter to 8 meter.
The transverse axis wind turbine 1 further comprises a first rotor 9 arranged to be propelled by air flow and provided with first rotor blades 11 and a first rotor axis 13.
The first rotor 9 is rotatably connected, via the first rotor axis 13, at a first side of the first rotor 9, to the first connecting element 5, and at a second side of the first rotor 9, opposite to the first side of the first rotor 9, to the second connecting element 7. The first rotor 9, as shown in Fig. 2, 3A and 3B, comprises a diameter d in a direction perpendicular to the first rotor axis 13. The diameter d is in the range of 3 meter to 15 meter, preferably in the range of 5 meter to 8 meter.
The transverse axis wind turbine 1 is connected to the support structure 3 via the first connecting element 5 and the second connecting element 7 and together form an assembly 101, as shown in Fig. 4. In the assembly, the first rotor axis is arranged vertically relative to the ground surface.
The support structure 3 can be a mast having a height h in the range of 50 meter to 300 meter, preferably in the range of 200 meter to 300 meter.
Fig. 4 further shows that the transverse axis wind turbine 1 comprises a first electrical generator 21 arranged for generating electricity, wherein the first rotor axis 13 is coupled to the first electrical generator 21 for generating the electricity upon rotating of the first rotor 9 about the first rotor axis 13. The first electrical generator 21 is provided at a side of the first connecting element 5 facing away from the first rotor 9. The transverse axis wind turbine 1 comprises a fourth connecting element 81 arranged for connecting the first electrical generator 21 to the support structure 3.
The transverse axis wind turbine 1 further comprises a third connecting element 31 arranged for further connecting the transverse axis wind turbine 1 to the support structure 3 and a second rotor 33 arranged to be propelled by air flow and provided with second rotor blades 35 and a second rotor axis 37.
The second connecting element 7 and the third connecting element 31 may be spaced apart differently compared to the first connecting element 5 and the second connecting element 7. Hence, the length of the first rotor 9 may differ from the length of the second rotor 33, as shown in Fig. 4.
The second rotor 33 is rotatably connected, via the second rotor axis 37, at a first side of the second rotor 33, to the second connecting element 7, and at a second side of the second rotor 33, opposite to the first side of the second rotor 33, to the third connecting element 31.
The second rotor axis 37 and the first rotor axis 13 of the transverse axis wind turbine 1 are connected to each other such that the second rotor axis 37 is coupled, via the first rotor axis 13, to the first electrical generator 21 for generating electricity upon rotation of the second rotor 33 about the second rotor axis 37. The second rotor axis 37 and the first rotor axis 13 may be releasably connected via a first coupling element 51, preferably a resilient coupling element arranged for resiliently coupling the first rotor axis 13 to the second rotor axis 37.
The transverse wind turbine 1 further comprises a third rotor 61 to be propelled by air flow and provided with third rotor blades 63 and a third rotor axis 65. The third rotor 61 is rotatably connected, via the third rotor axis 65, at a first side of the third rotor 61, to the first connecting element 5, and at a second side of the third rotor 61, opposite to the first side of the third rotor 61, to the second connecting element 7.
Fig. 4 further shows that the transverse wind turbine 1 further comprises a second electrical generator 71 arranged for generating electricity, wherein the third rotor axis 65 is coupled to the second electrical generator 71 for generating the electricity upon rotation of the third rotor 61 about the third rotor axis 65. The second electrical generator 71 is provided at a side of the first connecting element 5 facing away from the third rotor 61.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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NL2029455A NL2029455B1 (en) | 2021-10-18 | 2021-10-18 | a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine |
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NL2029455A NL2029455B1 (en) | 2021-10-18 | 2021-10-18 | a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine |
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NL2029455B1 true NL2029455B1 (en) | 2023-05-16 |
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NL2029455A NL2029455B1 (en) | 2021-10-18 | 2021-10-18 | a transverse axis wind turbine and an assembly of a support structure and the transverse axis wind turbine |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110025070A1 (en) * | 2009-07-31 | 2011-02-03 | Arnold Price | Utility grid vertical axis wind turbine system |
KR20130026065A (en) * | 2011-09-05 | 2013-03-13 | 원인호 | Double pillar safety wind turbine |
US20130094967A1 (en) * | 2011-10-14 | 2013-04-18 | Max Su | Vertical axis wind turbine system |
KR20160001338U (en) * | 2014-10-16 | 2016-04-26 | 주식회사 에니텍시스 | A generator |
US9752556B1 (en) * | 2016-11-07 | 2017-09-05 | King Saud University | Multi-rotor vertical axis wind turbine |
KR102001376B1 (en) * | 2018-06-05 | 2019-07-18 | 에스씨씨 주식회사 | Tower type wind power generator |
KR20200056104A (en) * | 2018-11-14 | 2020-05-22 | 정희주 | Stacked Vertical Wind Power Generator |
-
2021
- 2021-10-18 NL NL2029455A patent/NL2029455B1/en active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110025070A1 (en) * | 2009-07-31 | 2011-02-03 | Arnold Price | Utility grid vertical axis wind turbine system |
KR20130026065A (en) * | 2011-09-05 | 2013-03-13 | 원인호 | Double pillar safety wind turbine |
US20130094967A1 (en) * | 2011-10-14 | 2013-04-18 | Max Su | Vertical axis wind turbine system |
KR20160001338U (en) * | 2014-10-16 | 2016-04-26 | 주식회사 에니텍시스 | A generator |
US9752556B1 (en) * | 2016-11-07 | 2017-09-05 | King Saud University | Multi-rotor vertical axis wind turbine |
KR102001376B1 (en) * | 2018-06-05 | 2019-07-18 | 에스씨씨 주식회사 | Tower type wind power generator |
KR20200056104A (en) * | 2018-11-14 | 2020-05-22 | 정희주 | Stacked Vertical Wind Power Generator |
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