WO2014090219A2 - Pale de rotor, bras de retenue et rotor pour éolienne à axe vertical, procédé de production et éolienne à axe vertical - Google Patents

Pale de rotor, bras de retenue et rotor pour éolienne à axe vertical, procédé de production et éolienne à axe vertical Download PDF

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Publication number
WO2014090219A2
WO2014090219A2 PCT/DE2013/000774 DE2013000774W WO2014090219A2 WO 2014090219 A2 WO2014090219 A2 WO 2014090219A2 DE 2013000774 W DE2013000774 W DE 2013000774W WO 2014090219 A2 WO2014090219 A2 WO 2014090219A2
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotor blade
holding
profile
vertikalachswindenergieanlage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2013/000774
Other languages
German (de)
English (en)
Other versions
WO2014090219A3 (fr
Inventor
Markus Marnett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eovent GmbH
Original Assignee
Eovent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eovent GmbH filed Critical Eovent GmbH
Priority to DE112013005921.5T priority Critical patent/DE112013005921A5/de
Publication of WO2014090219A2 publication Critical patent/WO2014090219A2/fr
Publication of WO2014090219A3 publication Critical patent/WO2014090219A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • 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 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/064—Fixing wind engaging parts to rest of 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/214—Rotors for wind turbines with vertical axis of the Musgrove or "H"-type
    • 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
    • F05B2240/301—Cross-section characteristics
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a rotor blade, a holding arm and a rotor for a Vertikalachswindenergystrom and a Vertikalachswindenergystrom.
  • Wind turbines are well known in the art.
  • a wind turbine uses a rotor to convert the kinetic energy of the wind into mechanical energy of a shaft.
  • the aerodynamic forces on the rotor blades of the rotor fulfill this task.
  • the object of the present invention is to improve the prior art or to provide an alternative to the side.
  • a rotor blade for a Vertikalachswindenergystrom wherein the profile of the rotor blade is designed according to a polynomial according to the PARSEC-11 parametrization, the profile of the rotor blade at least seven, preferably eight, nine, has ten or all of the following PARSEC-11 parameters: r between 0.000 to 0.100, preferably between 0.005 to 0.080, particularly preferably from 0.005 to 0.050 x up between 0.10 to 0.60, preferably between 0.20 to 0.50 , more preferably from 0.25 to 0.45 y up, from 0.000 to 0.150, preferably from 0.000 to 0.135, most preferably from 0.050 to 0.120 a 2 ,
  • x low between 0.10 to 0.60, preferably between 0.20 to 0.50, more preferably from 0.25 to 0.40
  • y te between -0.3 to 0.3, preferably from -0.15 to 0.15, particularly preferably from 0
  • the parameterization refers to the so-called PARSEC-1 1 definition according to Marnett, Markus: PARSEC- 1 1 Parameterization, Techn. Report, Institute of Aerodynamics, RWTH Aachen University, 201 1.
  • a non-polynomialable course and / or a discontinuous course of the contour may still have a course designed according to the first aspect of the invention.
  • Ay te is the dimensionless thickness at the trailing edge
  • a second aspect of the invention which is also independently inventive, relates to a support arm for a vertical axis wind turbine, wherein the holding arm has a longitudinally extending holding structure, which is a hollow body whose wall thickness decreases in one area and whose rigidity is reduced to the outside.
  • the support structure may be, for example, a molded plastic or other material part. It may be a solid or hollow body, which may have a Konturgradienten. Other materials - such as metal - are conceivable.
  • the holding structure is a hollow body which has a constant outer cross-section in a region in which the wall thickness decreases.
  • Y-shaped support arms are advantageous because the drive torque can be transmitted better.
  • a Y-shaped holding arm with a likewise shaped holding structure it is advantageous if the region in which the wall thickness decreases with a constant outer cross section lies between the junction point of the Y and the rotor blade connection.
  • the support structure may be constructed of a plurality of U-profiles, which are pushed into each other. This creates a shell structure.
  • This simple construction variant is particularly favorable to manufacture and, for example, offers the advantage of a constant rectangular outer cross-section in the case of a later cladding.
  • a third aspect of the invention which is also independently inventive, relates to a support arm wherein the elongate support structure is wrapped in a mold and the profile of the mold is at least seven, eight, nine according to the above-described PARSEC-11 parametrization , ten or preferably all eleven of the following parameters: r is between 0.003 to 0.110, preferably between 0.022 to 0.110, particularly preferably from 0.100 x up between 0.268 to 0.420, preferably between 0.289 to 0.380, particularly preferred from 0.306 y up between 0.151 to 0.191, preferably between 0.154 to 0.172, more preferably 0.157
  • PARSEC-1 preferably a maximum of y up 20ths or around y up 50ths
  • the transversely extending frame structure can be realized by a wing-like frame structure. As a result, the weight of the mold is kept low.
  • the shell may be made of sheet metal, which has a thickness of 0.1 to 2 mm, in particular from 0.1 to 1 mm, particularly preferably 0.5 mm.
  • An attachment of the individual components of the support arm can be done by riveting, preferably blind rivets.
  • an undercut can be provided in the frames.
  • the frame structure has a bore through which, for example, any supply and control lines for a rotor blade adjustment or sensor technology can be laid on the rotor blade. This is preferably arranged in the direction of flow in the rear part of the bulkhead structure. The bore serves to receive cables, thus facilitating the routing thereof as compared to attachment of the cables within the longitudinally extending support structure of the support arm.
  • the definition of the angle of attack is shown in FIG. 4A. As a result, the efficiency is improved.
  • the angle of attack d as shown in FIG. 4, is a negative value.
  • the position of the "point of attack" is understood as lying on the line of the main axes of the support arm.
  • An eighth aspect of the invention which is also independently inventive, relates to a rotor for a vertical axis wind turbine.
  • the suction side of a profile is located on the inside of a rotor, a pressure side of a profile on the outside of a rotor.
  • a rotor for a vertical axis wind energy installation has retaining arms and a rotor blade, wherein two retaining arms belonging to a rotor blade have a connecting cross and the connecting cross is connected to the retaining arms via joints.
  • the connecting cross increases stability, while the joints simultaneously prevent bending moments are transmitted between the individual components.
  • triangles are arranged on the retaining arms, which have an axial bore for connection to a shaft. Again, the connection between the triangle and the support arm can be done via a joint.
  • the cross can be connected via joints with the triangles.
  • connection cross may be secured in the junction of the Y with the support arms. Since the radius with the third power enters into the moment of resistance, it is advantageous if the arms are sheathed over the length from the node point to the rotor blade with a shape which minimizes the drag coefficient as described above.
  • the connecting cross may consist of a plurality of bars, with the bars which fix the upper holding arm being in the plural.
  • the rods, which fix the upper holding arm, are loaded under pressure. Therefore, there is a risk of buckling. A reinforcement in the form of several rods, these forces can be better absorbed.
  • a ninth independent inventive aspect of the invention relates to a rotor for a vertical axis wind turbine, wherein it has a pitch angle adjustment.
  • the rotation of the rotor blades about the axis of rotation of the vertical axis wind energy systems is an oscillation of the rotor blades about a further axis of rotation each Rotor blade superimposed.
  • the course of the adjustment angle is called the pitch angle curve.
  • the pitch angle adjustment results in a variety of improvements.
  • pitch angle adjustment proposed here is offset by optimizing the pitch curve as a function of geometry and operating point parameters.
  • the geometry parameters are shown in FIG. 6 and are as follows:
  • the soundness ⁇ describes the ratio (number of rotor blades b times the rotor blade depth c) / (diameter of the rotor). It is advantageous if the solidity is between 0.15 and 0.25, preferably 0.2.
  • a tenth aspect of the invention relates to a method for producing a holding arm having a longitudinally extending support structure, wherein sheets are cut in a first step, these are folded to form in a second step, in a third step, the cut and molded profile parts are pushed into one another and in a fourth step, the parts are positively connected with each other.
  • the compound in the fourth step can be done by riveting.
  • a frame structure in a fifth step, can be slid and fastened and in a sixth step, the frame structure is sheathed.
  • the envelope may be a thin sheet.
  • the shell or the sheet metal can also be fastened to the frame structure with rivets, in particular blind rivets.
  • an undercut can be integrated for rivets.
  • FIG. 1 is a schematic representation of a vertical axis wind power plant
  • FIG. 2 shows different rotor shapes for vertical axis wind energy plants
  • FIG. 3 shows a schematic representation of a profile shape with specification of the eleven parameters according to the PARSEC-11 parameterization by Prof. Dr. med. Sobieczky
  • 2 is a schematic representation of a rotor blade with two holding arms and a connection to a shaft in a side view (FIG. 4A) and in a plan view (FIG. 4B) indicating the geometric definitions for determining the points of application;
  • FIG. 5A a schematic representation of a rotor blade with associated holding arms and the connection via a triangle in the top view, indicating the geometry parameters for pitch angle adjustment
  • FIG. 5B a schematic representation of a rotor blade with associated holding arms and the connection via a triangle in the top view, indicating the geometry parameters for pitch angle adjustment
  • a cross section ( Figure 8A) and a longitudinal section (Figure 8B) in perspective view through the elongate support structure a schematic representation of a section through the longitudinally extending support structure in the form of profiles with two different sectional planes
  • 10 shows a schematic representation of a cross section through a holding arm with a longitudinally extending holding structure and a transversely extending frame structure with a shell
  • FIG. 11 is a schematic representation of a frame component in a perspective view
  • Figure 12 is a schematic representation of a support arm in a perspective view and with deferred frame structure and shell and Figure 13 is a schematic representation of the Gararmkonstrutation a rotor with longitudinally extending support structure and deferred frame structure with shell.
  • the vertical axis wind turbine 1 shown in FIG. 1 consists of a rotor 2 and a tower 3, on which the rotor 2 is mounted.
  • the rotor 2 is formed by holding arms such as holding arm 4 and rotor blades such as rotor blade 5.
  • By the rotor 2 of the air kinetic energy is withdrawn and transmitted to a shaft 6 as mechanical energy.
  • mechanical energy is transferred from the rotor blades via the wing suspension in the form of the retaining ring.
  • the vertical axis wind energy systems rotor shapes shown in FIG. 2 are an H rotor (FIG. 2A), a helical rotor (FIG. 2B), a curved rotor (FIG. 2C) and a classical Darrieus rotor (FIG. 2D).
  • FIGS. 4A and 4B the geometry parameters for determining the points of application of the holding arms can be found in each case.
  • the structure of a subunit 11 of a rotor for a vertical axis wind power plant becomes clear here.
  • the kinetic energy of the wind is removed via a rotor blade 12 of the air and then transmitted via retaining arms 13, 13 'and triangles 14, 14' on the shaft 15 in the form of mechanical energy.
  • the holding arms 13 and 13 ' are Y-shaped.
  • the rotor blade 12 is connected via joints 16, 16 'to the support arms 13, 13' and via joints 17, 17 ', 17 "(not visible), 17"' with triangles 14, 14 ', which in turn with a shaft 15 in Connection stand.
  • Figure 6 the identical structure to Figure 4A is shown, but specifying the geometry parameters for pitch angle adjustment.
  • the arrow 31 determines the direction of flow and the point 32 the fulcrum.
  • FIGS. 5A and 5B For the bending moment curves in FIGS. 5A and 5B, Mb / Mbmax is plotted against z / h F.
  • the deviations of the bending moments in case of deviations from the optimal position can be seen here as described above.
  • a rotor 41 (see FIG. 7) of a vertical axis wind power plant consists, for example, of three rotor blades 42, 42 ', 42 "which are each connected to two triangles 44, 44' via a rotor connection 43, 43 ', 43" that connect to a shaft (not shown).
  • An upper support arm 45, 46, 47 and a lower support arm 45 ', 46', 47 ' are each connected via connecting crosses 48, 48', 48 ".
  • a holding arm assembly 71 is used as shown in FIG.
  • a mold 75 is applied, which has the following profile: r 0.100
  • the mold is formed by sliding ribs such as rib 76 onto the longitudinally extending support structure 72 and fixing them with rivets, such as rivets 77.
  • the ribs, such as rib 76 are wrapped with a thin sheet 78, which in turn is fastened with rivets, such as 79.
  • Such a sheath of Retaining arms takes place as shown in FIGS. 12 and 13 on each of the Y-shaped holding arms 82, 82 ', 83, 83', 84, 84 'from the junction of the Y by application of the molds 85, 85', 86, 86 '. , 87, 87 '.
  • a single frame member 91 as shown in Figure 11 has a recess 92 for a longitudinally extending support structure (not shown).
  • numerous openings such as 93 for receiving blind rivets (not shown) are provided.
  • a circular opening 94 is provided, through which cables (not shown) can be guided.

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une pale de rotor, un système de réglage de l'angle de calage de pale de rotor, un bras de retenue et un rotor pour une éolienne à axe vertical, ainsi qu'un procédé de production d'un bras de retenue pour une éolienne à axe vertical.
PCT/DE2013/000774 2012-12-11 2013-12-11 Pale de rotor, bras de retenue et rotor pour éolienne à axe vertical, procédé de production et éolienne à axe vertical Ceased WO2014090219A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112013005921.5T DE112013005921A5 (de) 2012-12-11 2013-12-11 Rotorblatt, Haltearm und Rotor für eine Vertikalachswindenergieanlage sowie Herstellverfahren und Vertikalachswindenergieanlage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012024119.4A DE102012024119A1 (de) 2012-12-11 2012-12-11 Rotorblatt, Haltearm und Rotor für eine Vertikalachswindenergieanlage und Verfahren zur Herste
DE102012024119.4 2012-12-11

Publications (2)

Publication Number Publication Date
WO2014090219A2 true WO2014090219A2 (fr) 2014-06-19
WO2014090219A3 WO2014090219A3 (fr) 2014-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2013/000774 Ceased WO2014090219A2 (fr) 2012-12-11 2013-12-11 Pale de rotor, bras de retenue et rotor pour éolienne à axe vertical, procédé de production et éolienne à axe vertical

Country Status (2)

Country Link
DE (2) DE102012024119A1 (fr)
WO (1) WO2014090219A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019529785A (ja) * 2016-09-23 2019-10-17 ウイスニウスキー，ヤン 風力タービン
US11143163B2 (en) 2016-03-08 2021-10-12 Semtive Inc. Vertical axis wind turbine
US11664663B2 (en) 2018-09-12 2023-05-30 Semtive Inc. Micro inverter and controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021231106A1 (fr) * 2020-05-11 2021-11-18 XFlow Energy Company Rotor de turbine à fluide séparable

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DE2745862A1 (de) * 1977-10-12 1979-04-19 Erich Herter Windturbine
DE3425313A1 (de) * 1984-07-10 1986-01-23 Erich Herter Windturbine
NO302590B1 (no) * 1993-06-11 1998-03-23 Einar Jakobsen Turbin, særlig vindturbin med vertikal rotasjonsakse
DE10044147A1 (de) * 2000-09-07 2002-03-21 Paul Graumann Rotorsystem zur Nutzung von Windenergie nach dem erodynamischen Auftriebsprinzip
US6382921B1 (en) * 2001-01-30 2002-05-07 Seimens Vdo Automotive, Inc. Low reynolds number, low drag, high lift airfoil
DE20308297U1 (de) * 2002-12-12 2004-02-12 Borza, Monika, Dipl.-Lehrerin Windkraftanlage mit vertikaler Rotorachse
CN101263277B (zh) * 2005-07-15 2011-11-30 维斯塔斯风力系统有限公司 风轮机叶片
FR2889261A1 (fr) * 2005-07-28 2007-02-02 Georges Jean Gual Dispositif eolien

Non-Patent Citations (1)

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Title
MARNETT; MARKUS: "Techn. Report", 2011, INSTITUTE OF AERODYNAMICS, article "PARSEC-11 Parameterization"

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11143163B2 (en) 2016-03-08 2021-10-12 Semtive Inc. Vertical axis wind turbine
JP2019529785A (ja) * 2016-09-23 2019-10-17 ウイスニウスキー，ヤン 風力タービン
US11664663B2 (en) 2018-09-12 2023-05-30 Semtive Inc. Micro inverter and controller

Also Published As

Publication number Publication date
DE102012024119A1 (de) 2014-06-12
DE112013005921A5 (de) 2015-09-10
WO2014090219A3 (fr) 2014-08-07

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