DK177326B1 - A Wind Turbine and Wind Turbine Blade - Google Patents
A Wind Turbine and Wind Turbine Blade Download PDFInfo
- Publication number
- DK177326B1 DK177326B1 DKPA201170248A DKPA201170248A DK177326B1 DK 177326 B1 DK177326 B1 DK 177326B1 DK PA201170248 A DKPA201170248 A DK PA201170248A DK PA201170248 A DKPA201170248 A DK PA201170248A DK 177326 B1 DK177326 B1 DK 177326B1
- Authority
- DK
- Denmark
- Prior art keywords
- wind turbine
- blades
- wind
- pitch
- rotor assembly
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000005484 gravity Effects 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000008694 Humulus lupulus Nutrition 0.000 description 2
- 244000025221 Humulus lupulus Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 101100489581 Caenorhabditis elegans par-5 gene Proteins 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
- F03D7/0268—Parking or storm protection
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
- F03D7/0228—Adjusting blade pitch of the blade tips only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
A method for controlling a two-bladed pitchable swept-blade wind turbine in extreme wind conditions is described, wherein when extreme conditions are detected or forecast for the wind turbine, the wind turbine blades are pitched such that they will stabilise in a substantially horizontal arrangement. The blades can be yawed such that the tip ends of the wind turbine blades point in the same direction towards the surface level, thereby lowering the centre of mass of the rotor assembly of the wind turbine blades and the rotor hub. The lower centre of mass of the assembly results in the stabilisation of the blades in a substantially horizontal position, resulting in a reduced surface area of the blades exposed to the extreme wind forces. This reduced surface area provides for a reduction in the extreme loads which may be experienced by the wind turbine in such extreme wind conditions.
Claims (10)
1. Fremgangsmåde til reduktion af vindbelastninger i en pitchjusterbar tobladet vindturbine med tilbage-strøgne blade under ekstreme vindbelastninger, hvilken vindturbine omfatter en rotorsamling, der kan 5 rotere om et drejepunkt, hvor rotorsamlingen har et rotomav og første og andre vindturbineblade på mindst 35 meters længde monteret på rotomavnet, hvori vindturbinebladenes spidser er på skrå i forhold til bladenes centerakser, hvor fremgangsmåden omfatter trinene: bringe vindturbinebladene i det væsentlige vandret på linie, hvori trinet omfatter pitchjustering af mindst en del af de bestrøgne sektioner af rotorbladene for at flytte rotorsamlingens tyngdepunkt i 10 forhold til rotorsamlingens drejepunkt, sådant at rotorsamling vil stabiliseres i en ligevægtsstilling, hvor rotorbladene er i det væsentlige vandret på linie, og hvor rotorsamlingens tyngdepunkt sænkes i forhold til rotorsamlingens drejepunkt ved den i det væsentlige vandrette liniestilling, og stille de i det væsentlige vandrette vindturbineblade sådan, at bladene er langsgående på linie med vindretningen ved turbinen for at reducere de ekstreme vindbelastninger oplevet af vindturbinebla-15 dene.
2. Fremgangsmåde ifølge krav 1, hvori trinet med at ændre pitch omfatter at ændre bladenes pitch sådan, at bladenes spidser peger i det væsentlige i modsatte retninger langs vindturbinerotorbladenes rotationsbane. 20
3. Fremgangsmåde ifølge krav 2, hvori vindturbinen omfatter første og andre pitchsystemer, der kan virke til at pitchjustere mindst en del af henholdsvis første og andet turbineblad, og hvor vindturbinen yderligere omfatter en styring, der kan styre det første og andet pitchsystem til drejning i omtrent ækvivalente pitchvinkler, og hvori pitchjusteringstrinet omfatter påtrykning af forskydning på ca. +/- 180° på 25 det andet pitchsystem.
4. Fremgangsmåde ifølge ethvert af de foregående krav, hvori vindturbinen omfatter et første blad med en første tilbagestrøget spids og et andet blad med en anden tilbagestrøget spids, og hvori pitchtrinet omfatter at pitchjustere det første blad sådan, at den første tilbagestrøgne spids har en pitchvinkel fra 30 ca. 85 til 95° og pitchjustering af det andet blad sådan, at den anden tilbagestrøgne spids har et pitchvinkel fra ca. -85 til -95°.
5. Fremgangsmåde ifølge ethvert af de foregående krav, hvori fremgangsmåden yderligere omfatter det trin at justere rotorsamlingens vægtfordeling for at stabilisere rotorsamlingen i et i det væsentlige 35 vandret arrangement. DK 177326 B1 14
6. Fremgangsmåde ifølge ethvert af de foregående krav, hvori fremgangsmåden yderligere omfatter det trin først at påtrykke en bremsekraft på en roterende rotorsamling for at reducere rotorsamlingens drejningsmoment, og hvor trinet med pitchjustering udføres, når vindturbinebladenes rotationshastighed 5 falder under en forud defineret grænsehastighed.
7. Fremgangsmåde ifølge ethvert af de foregående krav, hvori trinet med pitchjustering af mindst en del af rotorbladenes tilbagestrøgne sektioner kan udvise en justeret aerodynamisk profil af rotorsamlingen, hvilken justerede aerodynamiske profil kan virke til passivt at stille de i det væsentlige vandrette vind- 10 turbineblade sådan, at bladene er langsgående liniestillet med vindretningen ved turbinen.
8. Fremgangsmåde ifølge ethvert af de foregående krav, hvori vindturbinen omfatter et tårn, et maskinhus anbragt på toppen af tårnet, et rotomav roterbart monteret på maskinhuset, en generator koblet til rotomavet via en aksel, et par vindturbineblade på mindst 35 meters længde tilvejebragt på rotomavet, 15 og et krøjesystem koblet til maskinhuset, og hvori trinet med at liniestille de i det væsentlige vandrette vindturbineblade omfatter aktivt at krøje maskinhuset og rotomavnet ved aktivering af krøjesystemet.
9. Fremgangsmåde ifølge ethvert af de foregående krav, hvori bladet omfatter et partialpitchblad med en indre bladsektion og en ydre bladsektion, og hvori pitchjusteringstrinet omfatter at pitchjustere den ydre 20 bladsektion i forhold til den indre bladsektion.
10. Vindturbine omfattende et tårn, et maskinhus anbragt på toppen af tårnet, 25 et rotomav roterbart monteret på maskinhuset, en generator koblet til rotomavet via en aksel, og et par vindturbineblade på mindst 35 meters længde tilvejebragt på rotomavet, hvori vindturbinen yderligere omfatter en styring, der kan implementere trinene ifølge ethvert af krav 1- 9.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201170248A DK177326B1 (en) | 2011-05-19 | 2011-05-19 | A Wind Turbine and Wind Turbine Blade |
| CA2776216A CA2776216A1 (en) | 2011-05-19 | 2012-05-07 | A wind turbine and wind turbine blade |
| EP12167465.9A EP2525085A3 (en) | 2011-05-19 | 2012-05-10 | A wind turbine and wind turbine blade |
| US13/472,933 US20120294715A1 (en) | 2011-05-19 | 2012-05-16 | Wind turbine and wind turbine blade |
| CN2012101573251A CN102787969A (zh) | 2011-05-19 | 2012-05-18 | 风力涡轮机和风力涡轮机叶片 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK201170248 | 2011-05-19 | ||
| DKPA201170248A DK177326B1 (en) | 2011-05-19 | 2011-05-19 | A Wind Turbine and Wind Turbine Blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK201170248A DK201170248A (en) | 2012-11-20 |
| DK177326B1 true DK177326B1 (en) | 2013-01-07 |
Family
ID=46125222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA201170248A DK177326B1 (en) | 2011-05-19 | 2011-05-19 | A Wind Turbine and Wind Turbine Blade |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120294715A1 (da) |
| EP (1) | EP2525085A3 (da) |
| CN (1) | CN102787969A (da) |
| CA (1) | CA2776216A1 (da) |
| DK (1) | DK177326B1 (da) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK177422B1 (en) * | 2011-05-06 | 2013-04-22 | Envision Energy Denmark Aps | A Wind Turbine and Associated Control Method |
| DK177278B1 (en) * | 2011-05-19 | 2012-09-17 | Envision Energy Denmark Aps | A wind turbine and associated control method |
| CN103016276B (zh) * | 2012-12-07 | 2015-01-21 | 清华大学 | 用于大型风力发电机的两段式倾斜折叠叶片装置 |
| JP6025869B2 (ja) * | 2012-12-19 | 2016-11-16 | 三菱重工業株式会社 | 風車及びその運転方法 |
| CN103883466B (zh) * | 2014-02-24 | 2016-03-23 | 张效新 | 具有门扇形叶片及可伸缩风轮的水平轴风力发电机 |
| CN103883465B (zh) * | 2014-02-24 | 2016-03-23 | 张效新 | 具有船桨形叶片及鼓状可伸缩风轮的水平轴风力发电机 |
| DK178808B1 (en) * | 2014-12-12 | 2017-02-13 | Envision Energy Denmark Aps | Floating wind turbine structure with reduced tower height and method for optimising the weight thereof |
| CN108005847B (zh) * | 2016-11-02 | 2019-08-06 | 远景能源（江苏）有限公司 | 非发电运行时减小风力涡轮机载荷的方法 |
| DE102017000435A1 (de) * | 2017-01-19 | 2018-07-19 | Senvion Gmbh | Verfahren zum Drehen des Rotors einer Windenergieanlage |
| CN112424468B (zh) * | 2018-06-14 | 2023-08-22 | 维斯塔斯风力系统有限公司 | 具有用于停止的枢转转子叶片、线和释放机构的风力涡轮机 |
| CN108953052B (zh) * | 2018-06-27 | 2020-02-21 | 明阳智慧能源集团股份公司 | 一种降低风力发电机组停机工况下极端载荷的方法 |
| AU2018446413A1 (en) * | 2018-10-25 | 2021-05-27 | General Electric Renovables España, S.L. | Spar cap configuration for a jointed wind turbine blade |
| US20220397091A1 (en) * | 2019-11-07 | 2022-12-15 | Vestas Wind Systems A/S | Pivot angle control of blades of a wind turbine with hinged blades |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355955A (en) * | 1981-04-06 | 1982-10-26 | The Boeing Company | Wind turbine rotor speed control system |
| US5151610A (en) * | 1990-11-29 | 1992-09-29 | St Germain Jean | Wind machine with electric generators and secondary rotors located on rotating vertical blades |
| EP0709571A3 (de) | 1994-10-25 | 1996-12-11 | Autoflug Energietech Gmbh | Für eine lastarme Parkstellung eingerichtete Windkraftanlage |
| US6441507B1 (en) * | 2000-03-22 | 2002-08-27 | The Wind Turbine Company | Rotor pitch control method and apparatus for parking wind turbine |
-
2011
- 2011-05-19 DK DKPA201170248A patent/DK177326B1/en not_active IP Right Cessation
-
2012
- 2012-05-07 CA CA2776216A patent/CA2776216A1/en not_active Abandoned
- 2012-05-10 EP EP12167465.9A patent/EP2525085A3/en not_active Withdrawn
- 2012-05-16 US US13/472,933 patent/US20120294715A1/en not_active Abandoned
- 2012-05-18 CN CN2012101573251A patent/CN102787969A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20120294715A1 (en) | 2012-11-22 |
| EP2525085A3 (en) | 2014-05-21 |
| DK201170248A (en) | 2012-11-20 |
| CA2776216A1 (en) | 2012-11-19 |
| CN102787969A (zh) | 2012-11-21 |
| EP2525085A2 (en) | 2012-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |
Effective date: 20150531 |