EP0024071A1 - Systeme producteur d'energie - Google Patents

Systeme producteur d'energie

Info

Publication number
EP0024071A1
EP0024071A1 EP80900319A EP80900319A EP0024071A1 EP 0024071 A1 EP0024071 A1 EP 0024071A1 EP 80900319 A EP80900319 A EP 80900319A EP 80900319 A EP80900319 A EP 80900319A EP 0024071 A1 EP0024071 A1 EP 0024071A1
Authority
EP
European Patent Office
Prior art keywords
rope
energy input
driven
energy
wind
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.)
Withdrawn
Application number
EP80900319A
Other languages
German (de)
English (en)
Inventor
Peter Olof Broberg
Karl Alex Krister Karling
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0024071A1 publication Critical patent/EP0024071A1/fr
Withdrawn legal-status Critical Current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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/92—Mounting on supporting structures or systems on an airbourne structure
    • F05B2240/921—Mounting on supporting structures or systems on an airbourne structure kept aloft due to aerodynamic effects
    • 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
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/92—Mounting on supporting structures or systems on an airbourne structure
    • F05B2240/922—Mounting on supporting structures or systems on an airbourne structure kept aloft due to buoyancy effects
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

Definitions

  • This invention relates to an energy system comprising at least one energy input member and an assembly driven by said member.
  • the energy system to be described in the following makes use of the wind' as driving power, but other media are also useful, such as flowing water, provided that the conditions indicated hereinbelow are satisfied.
  • a disadvantage which is inherent in conventional wind- driven power stations is that forpractical reasons, to avoid the necessity of erecting high towers, one is under the obligation of locating the wind energy input member of the construction near the ground where the average wind ' velocity is subject to great local variations (turbulence and velocity gradients in the ground interface) .
  • the wind turbine plant will therefore become relatively large and bulky and difficult to service and maintain without the aid of heavy lifting appliances and scaffolds.
  • An obvious solution therefore is to raise the wind energy input member by means of an aerostat to such an altitude that it enters undisturbed air where the average wind velocity is higher and free from turbulence and other local irregularities.
  • the applicable practical lower alti- tude limits are from about 150 to about 200 overplains and oceans, from about 300 to about 400 m over wooded country ⁇ sides, and from about 500 to about 600 m over heavily broken South-Swedish and Central-Swedish districts and over cities with multi-storey blocks.
  • the craft In addition to its own weight and that of the anchorage rope, the craft must carry rotor, gearcase and generator. The torque and the gyratory forces of the rotor must be compensated for, which further increases the weight.
  • a practical problem associated with airborne wind rotor systems is that the generator and the rotor are heavy units and must therefore be placed near the centre of gravity to avoid weighty ballast.
  • One object of the present invention therefore is to try and exploit the advantages while simultaneously avoiding the disadvantages.
  • This is here realized by directly utilizing the wind forces acting on the aerostatic craft.
  • Said craft is then formed as an airfoil or wing of large extension in the direction of span width and provided with aerodynamic stabilization (like an airplane) so that it always adjusts itself in the wind direction similar to a weather-vane.
  • Said wing or airplane-like aerostatic craft is caused to adjust itself with the use of aerodynamic control sur ⁇ faces (by ropes or other control systems) so as to take an angle of attack to the air stream, which gives an optimum buoyant force and an optimum lift-drag ratio.
  • the buoyant force is transformed into energy in that the craft is caused to release a periodical up and down movement. This movement is transferred via a rope to a ground-based driven assembly which may comprise a transmission, a device for equalizing the energy and a pump, generator or the like.
  • the movement of the craft is controlled by means of an automatic pitch control system the primary task of which is to ensure that the craft has an optimum position with regard to the wind.
  • the craft may suitably be provided with an elevator system " like that of an airplane.
  • the control, system may optionally be supplemented with a yaw and roll control system which parries arising distur-.
  • the craft is designed so as to be self- stabilizing in the roll and yaw sense like an airplane, which may make a yaw and roll control superfluous.
  • Fig. 1 in side view and partly in section shows a wind energy system according to the invention.
  • Figs. 2 and 3 show a plan view and front view, respectively, of an aerostat utilized in the system shown in Fig. 1.
  • Figs. 4, 5 and 6 illustrate ' the theory underlying the invention.
  • Fig-. 7 shows the efficiencies of different wind energy systems.
  • Fig. 8 in side view and partly in section shows a modified embodiment of the invention.
  • Figs. 9 and 10 in side view and front view, respectively, show an other embodiment of the invention.
  • Fig. 11 in side view and partly in section shows still another embodiment of the system according to the inven ⁇ tion.
  • Figs. 12 and 13 in side view and partly in section and plan view, respectively, show a further embodiment of the system according to the invention.
  • Figs. 14a, 14b, 14c-19a, 19b, 19c show various embodiments of wind energy input members
  • Figs. 20, 21 and 22 show examples how the power in a rope is caused to drive a gear-wheel coupled to a driven assembly.
  • Fig. 1 illustrates the principle of the invention.
  • An airship 10 filled with helium or hydrogen gas and having the form of an aerostat is connected via a rope 11 to a driven assembly 12 comprising a rope drum 13, a
  • the aerostat 10 has a span width considerably in excess of its longitudinal exten ⁇ sion.
  • the aerostat 10 can be caused to effect an up and down movement under the action of the wind. Said movement is supplied via the rope 11 to the rope drum 13 to drive the generator 15.
  • the aerostat 10 effects an up and down movement with a stroke length designated SL.
  • the transport distances are designated A and B, while the turning points of the aerostat 10 are designated C and D.
  • the substantial take-up of energy takes place on the transport distances A, B.
  • the take-up of energy falls towards zero and the turning time should therefore be as short as possible relative to the time of transport.
  • Restricting factors are acceleration durability of the aerostat lifting surface, the capacity of the control system and the dynamic loads on the rope.
  • the aerostatic load on the rope must be high (overdimensioned supporting capacity of the craft) .
  • the control system ensures that the craft always has the optimum angle of adjustmentw,ith regard to the wind.
  • a high lift/ drag ratio at the best angle of adjustment with a minimum of resistance losses shall permit being set atan optimum angle of -adjustment (attack) in relation to the wind and have a velocity in the direction L of the buoyant force (at right angles to the wind direction) which is high relative to the velocity of the wind (preferably at least three times greater than V ) .
  • Fig. 6 shows the aerostat in pull action. The following calculations can be made on the basis of said figure:
  • Vres,, ⁇ ⁇ 7 2 + W - 2VW • cos ⁇
  • V rope unwinding speed of the rope
  • the lifting surface can be given such a shape that relatively high lift-drag ratios are obtained.
  • the harmful resistance zero resistance
  • the harmful resistance is limited to a frictional resistance on the lifting surface, a resistance induced by the control system and the resistance of the anchoring rope. In total, these increments are low compared with those of other air-borne and ground-based installations.
  • a prerequisite is that the air stream round the construction is not decelerated by other objects.
  • the system according to the invention has excep ⁇ tionally good prerequisites.
  • the aerostat 10 shown in Fig. 1 is caused to effect the movement illustrated in Fig. 4 under the action of a wind the direction of which is indicated by the arrow 26 in Fig. 4.
  • the rope 11 is unwound from and wound onto the drum 13 at this movement of the aerostat, and the rope drum 13 drives the generator 15 over a variable gear or reel regulator 14.
  • the generator 15 Before reaching the rope drum 13 the
  • OMPI rope 11 passes a ⁇ pe guide 18 which is mounted in a rotatable device 19 on the upper side of a housing 16 which contains the driven assembly 12. Also mounted on the upper side of the housing 16 is a frame 17 on -vfehich the aerostat 10.can be anchored after being hauled down, for instance on inspection and servicing or in hard weather. At some distance from the aerostat 10 the rope 11 is connected to a pitch/roll control device from which three, ropes 11a, lib and lie extend" to the aerostat 10. The angle attack of the aerostat 10 is regulated by means of the control device 20 and the ropes lla-llc so that the aerostat performs the movements shown in Fig. 4.
  • the stroke length SL is adjusted at the correct value, which preferably is at least 100 m and often much more, for instance 300 m.
  • the aerostat 10 may have a yaw servo 21 and yaw control 22.
  • the. extension of. the aerostat transversely of the wind direction (span width) is con ⁇ siderably larger than its extension in the wind direction, whereby the desired high lift/drag ratio is obtained.
  • the control or regulating devices, of the aerostat 10 are no part of the present invention and this is the reason why they are only hinted at in the drawings, such as a robot pilot 23, a control servo 24 or an aerodynamic control surface (pitch/roll control) .
  • a device which "counter-holds" the movement, such as an electrical or mechanical counterweight or spring system.
  • a logical way of simplifying the system and eli ⁇ minating the need for such a counter-hold is, as shown in Fig. 8, to connect two aerostats 10 to one end each of the same rope and to cause said aerostats to operate in push pull -fashion.
  • two frames 61 are spaced apart and each carry one rope guide 18 and a return pulley 27.
  • the housing 16 containing the driven assembly 12 is positioned between said frames 61.
  • the rope 11 thus runs from one aerostat 10 via one rope guide 18, return pulley 27, the driven assembly 12, the other return pulley 27 and the other rope guide 18 to the other aerostat 10.
  • the aerostats 10 operate in push pull fashion, i.e. when one aerostat is in its uppermost position the other aerostat is in its lowermost position. To protect the aerostats in heavy weather they are taken down and placed on a carriage 28 which is then driven into a hangar 29 with-the aid of a ramp 30. This system operates very satisfactorily and there is no risk of interference between the aerostats 10 since the rope 11 is very long. '
  • Figs. 9 and 10 show another embodiment of the energy system according to the invention, in which a plurality of aerostats 10 are connected to the same rope 11, the ends of which are united so that the rope 11 forms a closed loop.
  • the rope 11 is passed about two rope pulleys 31 which drive the generator 15 via a transmission (not shown) .
  • All aerostats 10, as already indicated, have aerodynamic control surfaces (rudders) which are connected to a central control system which adjusts each aerostat 10 so that .an optimum effect is obtained.
  • the aerostats 10 are aerodynamically stabilized in the pitch/roll and yaw senses.
  • the aerostats are aerostaticall overbalanced to such an high extent that as large a nega ⁇ tive (downwardly directed) buoyant force as possible can be taken out during the downward movements.
  • the rope pulleys 31 are mounted in a frame 32 which is journalled on a swivel table 36 whereby the frame 32 can be feathered with the aid of a servo device indicated at 35.
  • Beneath the path of movement of the aerostats 10 hauling-in and anchorage means 34 may be provided, to which the aerostats can be. fastened for instance in heavy weather.
  • the achor- age means 34 can, if desired, be arranged to be driven on a track (not shown) for transporting the aerostats to a hangar or other place of protection.
  • OMPI embodiment are arranged in pairs and connected to a shaft 62 which fitsinto a corresponding fastening of the endless anchorage rope 11.
  • this embodiment use is made of a plurality of aerostats the dimensions of which are 5 preferably reduced in relation to the aerostats used in the earlier described embodiments.
  • the embodiment accord ⁇ ing to Figs. 9 and 10 is particularly well suited for large installations.
  • Fig. 11 shows a further embodiment of the invention
  • Said rope drum 52 is journalled in a housing 50 which is rotatable with the aid of a swivel table 51.
  • the movement of the rope drum 52 is transmitted to a generator 15 via a shaft 53 and transmission means 54.
  • a shaft 53 and transmission means 54 Same as in the embodiment according to Fig. 8 one aerostat 10 moves
  • Figs. 12 and 13 show another way of exploiting the
  • crank shaft 56 which is generally designated 56 and which is vertically journalled in bearings 57, 58 in a frame 55.
  • the cranks 59 make an angle of at 120 with each other and the aero ⁇ stats 10 accordingly operate with a mutual phase shift of 5 120 .
  • the crank shaft 56 will be rela ⁇ tively large and heavy, but the advantage is gained that the mass of the crank shaft serves as an energy equalizer and permits rotation in one direction at a relatively
  • crank shaft 53 is transmitted via a shaft 53 and transmission means 54 to a generator 15.
  • Figs. 14a, 14b, 14c-19a, 19b, 19c illustrate different embodiments which are ' all well suited for use in connec ⁇ tion with the present invention.
  • These embodiments will not be discussed in greater detail, and it shall only be mentioned that they are aerostatically overbalanced, i.e. the aerostatic buoyant force is larger than the proper weight of the craft plus the weight of the rope when said rope is fully unwound. Being yaw and roll stable, the aerostats adjust themselves in the current rope direction.
  • the energy production takes place in that the craft is periodically caused by the control system to change its angle of adjustment..
  • the buoyant force is utilized for raising and lowering the craft the rope of which is always kept taut by the assembly on the ground or by being coupled in push pull fashion with another similar craft.
  • the aerodynamic force which is always in effect and which during the downward phase of the movement of the aerostat can be compensated for by a negative aero ⁇ dynamic buoyant force, contributes to the bias of the rope. This results in a higher average effect.
  • the control devices of the aerostats and the means for regulating said devices are not shown and described in greater detail since, as already indicated, they are no part of the invention and, besides, are self-explanatory to those skilled in the art of aerodynamics.
  • Figs. 20, 21 and 22 show by way of example how one can proceed with the use of two rope pulleys 37, 38 which are driven by two aerostats operating in push pull fashion in the
  • Each of the rope pulleys 37, 38 is fixed to a shaft 39 and 40, respectively, and the rope 11 is so arranged with the aid of return pulleys 47 and 48 that it passes about the greater portion of the circumference of the pulleys 37, 38.
  • Each of the rope pulleys 37 and 38 is coupled to a gear wheel 43 and 44, respectively, via a clutch 41 and 42, respectively, and the gear wheels 43, 44 mesh with a common, gear wheel 45 on a drive shaft 46 which is coupled to a generator via a transmission (not shown) . It will be seen from Figs.
  • the gear wheel 45 can be caused to rotate in the same direction.
  • the clutch 41 is engaged while the clutch 42 is disengaged, the gear wheel.45 rotating clockwise.
  • the clutch 41 is disengaged while the clutch-42 is engaged, and the gear wheel 45 still rotates clockwise.

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)
  • Wind Motors (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

Un systeme producteur d'energie ayant des moyens adaptes pour prelever de l'energie dans un milieu en ecoulement et comprenant au moins un corps (10) qui est plus leger que le milieu et possede un rapport portance/trainee eleve. Le corps (10) est auto-stabilisant dans le sens d'ecoulement du milieu et peut etre pilotes en direction de sorte que l'on peut lui faire faire un mouvement periodique ascendant et descendant d'une amplitude nettement superieure a la plus grande dimension du corps. Chaque membre comprenant un ou plusieurs corps (10) est relie a une corde (11) de transmission du mouvement ascendant et descendant a un ensemble (12) entraine par celle-ci.
EP80900319A 1979-02-13 1980-08-25 Systeme producteur d'energie Withdrawn EP0024071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7901237 1979-02-13
SE7901237A SE7901237L (sv) 1979-02-13 1979-02-13 Energisystem

Publications (1)

Publication Number Publication Date
EP0024071A1 true EP0024071A1 (fr) 1981-02-25

Family

ID=20337272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900319A Withdrawn EP0024071A1 (fr) 1979-02-13 1980-08-25 Systeme producteur d'energie

Country Status (3)

Country Link
EP (1) EP0024071A1 (fr)
SE (1) SE7901237L (fr)
WO (1) WO1980001705A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2155271C1 (ru) * 1999-03-19 2000-08-27 Орлов Игорь Сергеевич Установка для охлаждения окружающей среды и конденсации паров
US20100232988A1 (en) * 2006-05-12 2010-09-16 Windlift, Llc Tethered airfoil methods and systems
PT103489B (pt) * 2006-05-31 2008-11-28 Omnidea Lda Sistema modular de aproveitamento de recursos atmosféricos
GB2451641A (en) * 2007-08-07 2009-02-11 Peter Robert Goodall Energy absorption by rotation
GB2451642A (en) * 2007-08-07 2009-02-11 Peter Robert Goodall Energy absorption by rotation
SE0701866L (sv) * 2007-08-16 2009-02-17 Uppsala Power Man Consultants Vindkraftaggregat och förfarande för generering av elektrisk energi
WO2010064918A1 (fr) * 2008-12-03 2010-06-10 Prototech As Système de conversion d'énergie
GB2532764A (en) * 2014-11-27 2016-06-01 Kite Power Solutions Ltd A winch
NL2014817B1 (en) * 2015-05-18 2017-01-31 Seacurrent Holding B V Method and system for energy conversion from a flow of fluid.
PH12017550130B1 (en) * 2015-05-18 2022-08-19 Seaqurrent Holding B V Method and system for energy conversion from a flow of fluid
CN119042076B (zh) * 2024-09-06 2025-08-05 中水北方勘测设计研究有限责任公司 浮空器定高封闭式伞梯高空风能利用系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050562A (fr) * 1952-02-06 1954-01-08 Installation pour l'utilisation de l'énergie du vent
DE2437003A1 (de) * 1974-08-01 1976-02-12 Willi Zeidler Grosswindkraftwerk mit periodisch arbeitenden grossen tragfluegelballonen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8001705A1 *

Also Published As

Publication number Publication date
SE7901237L (sv) 1980-08-14
WO1980001705A1 (fr) 1980-08-21

Similar Documents

Publication Publication Date Title
US20130134261A1 (en) Airborne wind energy conversion system with fast motion transfer
US4350895A (en) Wind turbine and method for power generation
US8080889B2 (en) Aeolian system comprising power wing profiles and process for producing electric energy
US4659940A (en) Power generation from high altitude winds
US4036916A (en) Wind driven electric power generator
US12253062B2 (en) Apparatus for extracting power from fluid flow
US8373297B2 (en) Wind turbine generator and motor
US4342539A (en) Retractable wind machine
EP2682599B1 (fr) Convertisseur d'énergie éolienne utilisant des cerfs-volants
US20150008678A1 (en) Airborne wind energy conversion system with endless belt and related systems and methods
US20120086210A1 (en) Device for Extracting Energy from Moving Air or Moving Water
GB2119451A (en) Apparatus for extracting energy from winds at high altitudes
RU2436993C2 (ru) Ветряной электрогенератор
EP0449979A1 (fr) Turbine eolienne a aubes d'ailes a axe vertical
US20150308411A1 (en) Airborne wind energy system with reduced input torque, better torque handling and optimized speed
US20150316031A1 (en) Wind Energy Conversion With Kites Towing Modules on a Rail
EP0024071A1 (fr) Systeme producteur d'energie
EP2689130A1 (fr) Système de conversion d'énergie éolienne en énergie électrique par le vol de profils d'aile de traction attachés au sol par des câbles d'une longueur fixe, sans phase passive, et à adaptation automatique aux conditions de vent
US20120328438A1 (en) Wind turbine generator and motor
WO2009115253A2 (fr) Centrale éolienne comprenant un corps volant mobile guidé sur un mât
JP2021169821A (ja) 流体流から電力を抽出するための装置
CN102979671B (zh) 一种风能转换机构及高空风力发电装置
CN213743826U (zh) 垂直轴风帆式风力发电机
AU7038881A (en) Wind turbine and method for power generation
NZ571984A (en) Aeolian system using transmission system including three sets of blocks

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19810226