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WO2006119922A1 - Dispositif de regulation de la vitesse de rotation du rotor de moteurs d'eolienne a axe de rotation vertical - Google Patents

Dispositif de regulation de la vitesse de rotation du rotor de moteurs d'eolienne a axe de rotation vertical Download PDF

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Publication number
WO2006119922A1
WO2006119922A1 PCT/EP2006/004219 EP2006004219W WO2006119922A1 WO 2006119922 A1 WO2006119922 A1 WO 2006119922A1 EP 2006004219 W EP2006004219 W EP 2006004219W WO 2006119922 A1 WO2006119922 A1 WO 2006119922A1
Authority
WO
WIPO (PCT)
Prior art keywords
blades
blade
rotational speed
rotation
rotor
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/EP2006/004219
Other languages
German (de)
English (en)
Inventor
Robert Niederkofler
Egon Mur
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.)
ROPATEC SpA
Original Assignee
ROPATEC SpA
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 ROPATEC SpA filed Critical ROPATEC SpA
Publication of WO2006119922A1 publication Critical patent/WO2006119922A1/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
    • F03D7/00—Controlling wind motors 
    • F03D7/06—Controlling wind motors  the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
    • 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
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • 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

Definitions

  • the same mechanism should be used to avoid too high and dangerous rotation in very strong winds.
  • the blades are kept in calm conditions, with the rotor stationary, by the springs in an aerodynamically efficient position so that, with relatively weak wind conditions, the start of the rotary movement is achieved.
  • strong winds causes the centrifugal force which acts on the counterweights on the wings whose pivoting in an aerodynamically adverse position whereby the achievement of excessive or dangerous rotational speeds is prevented.
  • the invention has the object to provide a control system for the rotational speed of rotors of wind engines with vertical axis of rotation of the type mentioned which the start of the rotary motion with relatively light wind, the optimal use of the wind at nominal intensity and the speed reduction in case of excessive wind, or maintaining the rated speed despite excessive wind.
  • the invention proposes the pivotable mounting of the individual blade according to a, parallel to the axis of rotation of the rotor axis, said axis within the profile of the blade and offset in the direction of entry or exit edge of the blades, with respect to the axis which through the blade's center of gravity is located.
  • a possibly adjustable stop is proposed against which the blade of an elastic member , for example, by a screw, spiral, torsion, or by a gas spring, pulled or pushed.
  • the Position of the said stop and thus the position of the blades with respect to the rotation is determined by the rotor type (which eg needs an auxiliary drive), the profile of the blades or / and the wind properties in the installation area.
  • the blades In a first phase, or until reaching a certain rotational speed, the blades maintain the position defined by the stop which is the ideal position for the start of the rotation, or which is the ideal position for a good performance in relation to the nominal intensity of the wind at the place of installation, at.
  • the invention provides that the pivot axis of the blades within the cross section of the blade, spaced from the axis which passes through the center of gravity of the blade, in a forward position, direction
  • the adjustable stop defines the starting position of the blades when there is no wind and when the wind causes a certain speed of rotation, so under these conditions, the centrifugal force completely surpassed by the elastic, acting on the blades, elastic retaining elements.
  • elastic retaining elements as well as the stops, may be provided inside or outside the blades and act between the blades and the corresponding support structure.
  • the adjustment of the stops according to the invention also during the rotation of the rotor, for example by means of a servomotor which is controlled by one or more sensors or known safety devices, take place.
  • the elastic members are advantageously of adjustable type, the direction of action of which can be changed by providing different attachment points which are spaced from the pivot axis of the blade differently and / or which are provided on the support structure of the blades in different positions.
  • the invention does not exclude that each of the elastic return organs consists of more than one elastic element so that the centrifugal force which acts on the blade, is progressively counteracted with different, according to a predetermined scheme increasing or decreasing elastic forces.
  • the invention does not exclude that also for the maximum pivoting position of the blade which determines the maximum aerodynamic resistance, a stop is provided.
  • Fig. 1 is a perspective view of the rotor of a vertical axis rotary electric motor of the central diverter type and having three vanes having a wing profile; the rotor is provided with a rotary speed control device according to the invention which is mounted on, about a vertical axis in front of the center of gravity of each blade (in the direction of the leading edge), pivotally mounted blades acts; the elastic return organs consist of gas springs which are fastened on the outside on the upper, provided with arcuate slots, holding plate and on the other hand, the slots are cross-connected to the corresponding blades.
  • Fig. 2 is a plan view of the rotor shown in Fig. 1 provided with the rotary speed control apparatus of the present invention.
  • FIG. 3 shows the details of one of the blades of the rotor shown in FIG. 2, without the upper holding plate and with the blade shown in solid line in the position defined by the stop and with the blade shown in dotted line in a pivoted manner Position and with, compressed by the centrifugal force, gas spring.
  • Fig. 4 shows the details of one of the blades of a rotor without the upper support plate; the blade is pivotally mounted about an axis which lies behind the center of gravity of the blade (in the direction of the trailing edge), the blade shown by a solid line is in the through the
  • Stop defined position the same blade shown with a dashed line is in a tilted position because the centrifugal force compresses the gas spring.
  • the rotor of a wind motor which consists of two mutually parallel support plates 1 for vertical blades 2 and a central deflecting body 3, with respect to the fixed base frame 4, about a vertical axis A rotatable R, stored.
  • Each of the three blades 2 is mounted, about a vertical axis B, B1, pivotally S, S1, wherein the axis B, B1 is spaced from the center of gravity G of the blade 2 d.
  • the position and the distance of the pivot axis B, B1 can vary; in practice, only those positions are excluded which lie in that plane which includes the axis of rotation A of the rotor and the axis passing through the center of gravity G of the blade 2.
  • the starting position of the blades 2, which corresponds, for example, the maximum power at nominal intensity of the wind V or the start of rotation without external drive (high-speed) is defined by an adjustable 1c stop 1 b which may be provided with a sensor controlled by servomotor ,
  • the starting position of the blades 2 and possibly also the position of the maximum pivoting can also be defined by an arcuate slot 1 a in which the connecting pin between the blade 2 and end 5a of the piston rod of the gas spring 5 runs.
  • the gas springs 5 are subjected to pressure, of course, the gas springs or other centrifugal force F counteracting elastic organs can also be claimed in train by the end of the elastic members on the blade. 2 is set on the side of the position of the center of gravity G 1 with respect to the pivot axis B, B1.
  • the control system according to the invention offers a wide possibility of adaptation and change by changing the distance between the center of gravity G and pivot axis B, B1, the change 1c of the position of the stops 1b, the change in the force of the elastic, the centrifugal force F counteracting, organs 5 and the change the points of determination 5a, 5b of the elastic members 5, is provided.

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

L'invention concerne un dispositif de régulation de la vitesse de rotation du rotor d'un moteur d'éolienne à axe de rotation vertical, ledit rotor comprenant une structure d'appui (1) pour les pales verticales (2) et, éventuellement, pour un corps de déviation central (3), chacune des pales (2) étant montée pivotante (S, S1) autour d'un axe vertical (B, B1) qui est décalé par rapport au centre de gravité (G) de la pale (2). Le dispositif est caractérisé en ce que la position initiale des pales qui est prise par temps calme, est définie par une butée (1b) fixe ou réglable (1c) et par l'action d'un ou de plusieurs organes élastiques (5) agissant entre la structure d'appui (1) et chacune des pales (2), de telle façon que lesdits organes soient pressés ou tirés contre ladite butée (1b).
PCT/EP2006/004219 2005-05-11 2006-05-05 Dispositif de regulation de la vitesse de rotation du rotor de moteurs d'eolienne a axe de rotation vertical Ceased WO2006119922A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBZ2005A000020 2005-05-11
IT000020A ITBZ20050020A1 (it) 2005-05-11 2005-05-11 Dispositivo di regolazione della velocita' di rotazione del rotore di motori a vento ad asse di rotazione verticale.

Publications (1)

Publication Number Publication Date
WO2006119922A1 true WO2006119922A1 (fr) 2006-11-16

Family

ID=36729332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/004219 Ceased WO2006119922A1 (fr) 2005-05-11 2006-05-05 Dispositif de regulation de la vitesse de rotation du rotor de moteurs d'eolienne a axe de rotation vertical

Country Status (2)

Country Link
IT (1) ITBZ20050020A1 (fr)
WO (1) WO2006119922A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7988413B2 (en) 2010-04-23 2011-08-02 Eastern Wind Power Vertical axis wind turbine
US8030792B2 (en) 2009-03-12 2011-10-04 Eastern Wind Power Vertical axis wind turbine system
WO2012008862A2 (fr) 2010-07-16 2012-01-19 Telbit Phu, Iwona Janowska Turbine éolienne à axe vertical
GB2503118A (en) * 2011-12-22 2013-12-18 Brian Curtis Vertical axis wind turbine
US8648483B2 (en) 2009-03-12 2014-02-11 Eastern Wind Power Vertical axis wind turbine system
CN104343640A (zh) * 2014-10-16 2015-02-11 温振雄 一种车载风力发电装置
CN105201730A (zh) * 2015-09-25 2015-12-30 杭州恒龙新能源科技有限公司 垂直轴水流发电机的自动变桨机构
CN108757294A (zh) * 2018-06-07 2018-11-06 宁德职业技术学院 基于波浪能的新型可再生能源采集利用设备和方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB264219A (en) * 1925-10-13 1927-01-13 Sigurd Johannes Savonius Improvements in or relating to wind rotors
US1766765A (en) * 1927-12-16 1930-06-24 Sigurd J Savonius Wind rotor
US4784568A (en) * 1987-07-01 1988-11-15 Benesh Alvin H Wind turbine system using a vertical axis savonius-type rotor
RU2170366C2 (ru) * 1998-04-06 2001-07-10 Зельдин Юлий Рафаилович Ветродвигатель
US20040042899A1 (en) * 2002-09-03 2004-03-04 Ghazi Khan All weather wind turbines
US20050042095A1 (en) * 2003-08-20 2005-02-24 Arthur Kaliski Self regulating rotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB264219A (en) * 1925-10-13 1927-01-13 Sigurd Johannes Savonius Improvements in or relating to wind rotors
US1766765A (en) * 1927-12-16 1930-06-24 Sigurd J Savonius Wind rotor
US4784568A (en) * 1987-07-01 1988-11-15 Benesh Alvin H Wind turbine system using a vertical axis savonius-type rotor
RU2170366C2 (ru) * 1998-04-06 2001-07-10 Зельдин Юлий Рафаилович Ветродвигатель
US20040042899A1 (en) * 2002-09-03 2004-03-04 Ghazi Khan All weather wind turbines
US20050042095A1 (en) * 2003-08-20 2005-02-24 Arthur Kaliski Self regulating rotor

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8648483B2 (en) 2009-03-12 2014-02-11 Eastern Wind Power Vertical axis wind turbine system
US8030792B2 (en) 2009-03-12 2011-10-04 Eastern Wind Power Vertical axis wind turbine system
US8258647B2 (en) 2010-04-23 2012-09-04 Eastern Wind Power Vertical axis wind turbine
US8373294B2 (en) 2010-04-23 2013-02-12 Eastern Wind Power Vertical axis wind turbine
US8376688B2 (en) 2010-04-23 2013-02-19 Eastern Wind Power Vertical axis wind turbine
US7988413B2 (en) 2010-04-23 2011-08-02 Eastern Wind Power Vertical axis wind turbine
WO2012008862A2 (fr) 2010-07-16 2012-01-19 Telbit Phu, Iwona Janowska Turbine éolienne à axe vertical
GB2503118A (en) * 2011-12-22 2013-12-18 Brian Curtis Vertical axis wind turbine
CN104343640A (zh) * 2014-10-16 2015-02-11 温振雄 一种车载风力发电装置
CN105201730A (zh) * 2015-09-25 2015-12-30 杭州恒龙新能源科技有限公司 垂直轴水流发电机的自动变桨机构
CN105201730B (zh) * 2015-09-25 2017-08-22 杭州恒龙新能源科技有限公司 垂直轴水流发电机的自动变桨机构
CN108757294A (zh) * 2018-06-07 2018-11-06 宁德职业技术学院 基于波浪能的新型可再生能源采集利用设备和方法
CN108757294B (zh) * 2018-06-07 2023-06-06 宁德职业技术学院 基于波浪能的新型可再生能源采集利用设备和方法

Also Published As

Publication number Publication date
ITBZ20050020A1 (it) 2006-11-12

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