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WO1996018815A1 - Wind turbine - Google Patents

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Publication number
WO1996018815A1
WO1996018815A1 PCT/EP1995/004958 EP9504958W WO9618815A1 WO 1996018815 A1 WO1996018815 A1 WO 1996018815A1 EP 9504958 W EP9504958 W EP 9504958W WO 9618815 A1 WO9618815 A1 WO 9618815A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotors
wind power
power installation
installation according
Prior art date
Application number
PCT/EP1995/004958
Other languages
French (fr)
Inventor
Alfred Wilhelm
Original Assignee
Alfred Wilhelm
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 Alfred Wilhelm filed Critical Alfred Wilhelm
Publication of WO1996018815A1 publication Critical patent/WO1996018815A1/en

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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • 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
    • F03D15/00—Transmission of mechanical power
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • 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
    • F05B2240/60—Shafts
    • F05B2240/61—Shafts hollow
    • 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
    • F05B2260/40—Transmission of power
    • F05B2260/403—Transmission of power through the shape of the drive components
    • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
    • 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

Definitions

  • the invention relates to a wind power installation comprising a horizontally extending rotor axis and a rotor with an axial cross-flow.
  • Such wind power installations are widespread and are employed for opera ⁇ ting machines such as generators or pumps.
  • a good aerodynamic efficiency is achieved by means of wind power installations whose rotors present two or three rotor blades.
  • the task of the present invention consists in developing a wind power installation in such a manner that the wind power is converted into mecha ⁇ nical power to the fullest possible extent and that the lowest possible torque is transmitted to the support of the wind power installation.
  • This task is solved by disposing on the rotor axis two rotors rotating in opposite direction (counterrotating rotors).
  • the rotating movement of both rotors is transmitted to at least one machine, preferably a generator.
  • the torques of each of the two rotors rotating in opposite direction compensate each other, thus not being transmitted to the supporting parts of the wind power installation.
  • the two rotors can be adjusted to one another in such a manner that the kinetic energy of the wind flowing through the profile section of the rotor is drawn to the fullest possible extent. In parti- cular, it is possible to utilize the swirl of the wind flow behind the first rotor by means of the second rotor, converting it into mechanical power.
  • the front rotor comprises three and the rear rotor two rotor blades.
  • the rotor blades of the rear rotor may have a greater length than those of the front rotor.
  • the inner zone of the rear rotor is then driven by the swirl of the outgoing flow of the front rotor, the outer zone of the rear rotor being exposed to the unrestrained wind flow.
  • the shaft of one of the rotors should be executed as a hollow shaft in which extends the shaft of the other rotor.
  • the rotating movements of both of the rotors can be transmitted to the rotor of a generator.
  • the rotating movement of one of the rotors can be transmitted to the stator of the generator und that of the other rotor to the rotor of the generator.
  • the differential gear can be omitted.
  • the rotors are fixed to a housing in which the rotor shafts are mounted.
  • the housing can also contain the generator so that the rotor shafts can be executed extremely short.
  • a wind rudder can be fixed to the housing.
  • the invention also relates to a wind power installation wherein each rotor blade consists of two profiles, curved in the manner of sails and having a concave outer surface directed towards the wind. Thus, a curved flow channel is formed between the two profiles.
  • This arrangement of the rotor blocks is also advantageous in connection with a single-rotor wind power installation.
  • FIG. 1 a front view of the rotors of the wind power installation according to the invention
  • figure 2 a side view of the rotors and of the housing of the wind power installation according to the invention
  • figure 3 a sectional view of a profile of a rotor blade
  • figure 4 the sectional side view of the wind power installation
  • figure 5 a representation of the housing for the rotor shafts of figure 4, viewed in section along sectional line A-A, and
  • FIGS 6 and 7 the front view and the side view, respectively, of an alternative form of execution of the invention.
  • Two counterrotating rotors 1 ,2 are disposed coaxially on the wind power installation.
  • the first one, the front rotor 1 going by the direction of flow, comprises three rotor blades 3.
  • the second one, the rear rotor 2 going by the direction of flow, comprises two rotor blades 4.
  • the rotor blades 4 of the rear rotor 2 have a greater length than the rotor blades 3 of the front rotor 1.
  • the shafts 8,9 of both of the rotors 1 and 2 are mounted rotatably in a housing 5 by means of rolling bearings 6 and 7 (see figure 4) .
  • the shaft 8 of rotor 1 is formed by a hollow shaft.
  • the shaft 9 of rotor 2 extends inside said hollow shaft.
  • the shafts 8 and 9 are connected to a generator 13 by means of a differential gear 10 and intermediate shafts 11 and 12.
  • Inter ⁇ mediate shafts 1 1 and 12 which are also formed by a hollow shaft 1 1 and a shaft 12 located inside the hollow shaft, are rotatably connected with the rotor shafts via bevel gears 14, 15, 16, 17.
  • the differential gear 10 is executed in such a manner that the torques of 5 both of the rotors 1 and 2 act jointly on the shaft 18 of the generator 13 , forming a sum there.
  • the torques of both of the rotors which can be different depending on wind velocity, contribute entirely to the generation of power.
  • the differential gear 10 consists of bevel gears on the extremities of the differential shafts 11 and 12 both of which act upon a bevel gear on generator shaft 18.
  • housing 5 is provided with a wind rudder 19.
  • Housing 5 is fixed rotatably to a hollow housing support 21 which contains the intermediate shafts 11 and 12 by means of a rolling bearing 20.
  • a housing support 21 of sufficient length, it is possible to dispose the rotors 1 and 2 at a sufficient distance from the ground so that in the area of the rotors the 20 wind flow is not disturbed by ground friction.
  • the housing 5 is executed in a streamlined shape, with a rounded or pointed extremity facing the wind.
  • All the rotor blades of the rotors 1 , 2 preferably each consist of two 25 profiles 22, 23 curved in the manner of sails and forming a concave outer surface 24 directed towards the wind and a curved flow channel 25.
  • the flow profiles of the rotors 1 and 2 are oriented in such a manner that the rotors 1 and 2 run in opposite directions of rotation. A sectional view of such a rotor profile is shown in figure 3.
  • FIGS. 6 and 7 show an alternative form of execution of the invention.
  • the shaft 8 of the front rotor 1 is fixed to the housing of the generator 13.
  • the shaft 9 of the rear rotor 2 is fixed to the rotor of the generator 13.
  • the generator 13 is arranged within the housing 5 of the wind power installa ⁇ tion.
  • the differential gear can be omitted, the entire wind power installation with its power generating unit being disposed inside the housing

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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

The invention relates to a wind power installation comprising a horizontally extending rotor axis and a rotor with an axial cross-flow. The task of the invention consists in reaching a high rate of conversion of the wind energy into mechanical energy and in minimizing the torque that is transmitted to the support of the installation. In order to solve this task two counter-rotating rotors are arranged on the rotor axis, the rotating movement of both rotors being transmitted to at least one machine, preferably a generator.

Description

WIND TURBINE
The invention relates to a wind power installation comprising a horizontally extending rotor axis and a rotor with an axial cross-flow.
Such wind power installations are widespread and are employed for opera¬ ting machines such as generators or pumps. A good aerodynamic efficiency is achieved by means of wind power installations whose rotors present two or three rotor blades.
The task of the present invention consists in developing a wind power installation in such a manner that the wind power is converted into mecha¬ nical power to the fullest possible extent and that the lowest possible torque is transmitted to the support of the wind power installation.
This task is solved by disposing on the rotor axis two rotors rotating in opposite direction (counterrotating rotors). The rotating movement of both rotors is transmitted to at least one machine, preferably a generator.
The torques of each of the two rotors rotating in opposite direction compensate each other, thus not being transmitted to the supporting parts of the wind power installation. The two rotors can be adjusted to one another in such a manner that the kinetic energy of the wind flowing through the profile section of the rotor is drawn to the fullest possible extent. In parti- cular, it is possible to utilize the swirl of the wind flow behind the first rotor by means of the second rotor, converting it into mechanical power.
Preferably, the front rotor comprises three and the rear rotor two rotor blades. The rotor blades of the rear rotor may have a greater length than those of the front rotor. The inner zone of the rear rotor is then driven by the swirl of the outgoing flow of the front rotor, the outer zone of the rear rotor being exposed to the unrestrained wind flow. In order to allow for a coaxial disposition of the two rotors, the shaft of one of the rotors should be executed as a hollow shaft in which extends the shaft of the other rotor.
By way of a differential gear, the rotating movements of both of the rotors can be transmitted to the rotor of a generator. As an alternative, the rotating movement of one of the rotors can be transmitted to the stator of the generator und that of the other rotor to the rotor of the generator. In that case, the differential gear can be omitted.
In order to make sure none of the rotors is driven into the wrong direction of rotation by way of the differential gear due to the rotating movement of the other rotor, it is possible to provide a blocking device, particularly a free-wheel . That way, the rotating movements of the rotors are released only in the intended direction of rotation, being blocked in the opposite direction of rotation.
Usually, the rotors are fixed to a housing in which the rotor shafts are mounted. The housing can also contain the generator so that the rotor shafts can be executed extremely short. In order for the housing and the rotors fixed to the same always to be oriented correctly with regard to the wind, a wind rudder can be fixed to the housing.
The invention also relates to a wind power installation wherein each rotor blade consists of two profiles, curved in the manner of sails and having a concave outer surface directed towards the wind. Thus, a curved flow channel is formed between the two profiles. This arrangement of the rotor blocks is also advantageous in connection with a single-rotor wind power installation.
Further characteristics and advantages of the invention result from the subsequent description of the drawings. The drawings represent: figure 1 a front view of the rotors of the wind power installation according to the invention,
figure 2 a side view of the rotors and of the housing of the wind power installation according to the invention,
figure 3 a sectional view of a profile of a rotor blade,
figure 4 the sectional side view of the wind power installation,
figure 5 a representation of the housing for the rotor shafts of figure 4, viewed in section along sectional line A-A, and
figures 6 and 7 the front view and the side view, respectively, of an alternative form of execution of the invention.
Two counterrotating rotors 1 ,2 are disposed coaxially on the wind power installation. The first one, the front rotor 1 going by the direction of flow, comprises three rotor blades 3. The second one, the rear rotor 2 going by the direction of flow, comprises two rotor blades 4. The rotor blades 4 of the rear rotor 2 have a greater length than the rotor blades 3 of the front rotor 1.
The shafts 8,9 of both of the rotors 1 and 2 are mounted rotatably in a housing 5 by means of rolling bearings 6 and 7 (see figure 4) . The shaft 8 of rotor 1 is formed by a hollow shaft. The shaft 9 of rotor 2 extends inside said hollow shaft.
As shown in figure 4 the shafts 8 and 9 are connected to a generator 13 by means of a differential gear 10 and intermediate shafts 11 and 12. Inter¬ mediate shafts 1 1 and 12, which are also formed by a hollow shaft 1 1 and a shaft 12 located inside the hollow shaft, are rotatably connected with the rotor shafts via bevel gears 14, 15, 16, 17.
The differential gear 10 is executed in such a manner that the torques of 5 both of the rotors 1 and 2 act jointly on the shaft 18 of the generator 13 , forming a sum there. Thus, the torques of both of the rotors, which can be different depending on wind velocity, contribute entirely to the generation of power.
ιo Preferably, the differential gear 10 consists of bevel gears on the extremities of the differential shafts 11 and 12 both of which act upon a bevel gear on generator shaft 18.
In order for rotors 1 and 2 always to be oriented correctly with regard to i s the wind, housing 5 is provided with a wind rudder 19. Housing 5 is fixed rotatably to a hollow housing support 21 which contains the intermediate shafts 11 and 12 by means of a rolling bearing 20. By choosing a housing support 21 of sufficient length, it is possible to dispose the rotors 1 and 2 at a sufficient distance from the ground so that in the area of the rotors the 20 wind flow is not disturbed by ground friction. Preferably, the housing 5 is executed in a streamlined shape, with a rounded or pointed extremity facing the wind.
All the rotor blades of the rotors 1 , 2 preferably each consist of two 25 profiles 22, 23 curved in the manner of sails and forming a concave outer surface 24 directed towards the wind and a curved flow channel 25. The flow profiles of the rotors 1 and 2 are oriented in such a manner that the rotors 1 and 2 run in opposite directions of rotation. A sectional view of such a rotor profile is shown in figure 3.
30
Figures 6 and 7 show an alternative form of execution of the invention. The shaft 8 of the front rotor 1 is fixed to the housing of the generator 13. The shaft 9 of the rear rotor 2 is fixed to the rotor of the generator 13. The generator 13 is arranged within the housing 5 of the wind power installa¬ tion. Thus the differential gear can be omitted, the entire wind power installation with its power generating unit being disposed inside the housing

Claims

Claims:
1. Wind power installation comprising a horizontally extending rotor axis and a rotor with an axial cross-flow, characterized in that two counter¬ rotating rotors (1 , 2) are arranged on the rotor axis, the rotating movement of both rotors being transmitted to at least one machine, preferably a generator (13).
2. Wind power installation according to claim 1 , characterized in that the front rotor (1) comprises three rotor blades (3) and the rear rotor (2) two rotor blades (4).
3. Wind power installation according to claims 1 or 2, characterized in that the rotor blades (4) of the rear rotor (2) are longer than the rotor blades (3) of the front rotor (1) .
4. Wind power installation according to at least one of the preceding claims, characterized in that the shaft (8) of one of the two rotors (1 , 2) is formed by a hollow shaft.
5. Wind power installation according to at least one of the preceding claims, characterized in that the rotating movements of both of the rotors ( 1 , 2) are transmitted to the rotor of a generator (13) via a differential gear.
6. Wind power installation according to at least one of the preceding claims 1-4, characterized in that the rotating movement of one of the rotors (1 , 2) is transmitted to the stator and the rotating movement of the other one of the rotors (1 , 2) is transmitted to the rotor of a generator (13).
7. Wind power installation according to at least one of the preceding claims, characterized in that the rotors (1 , 2) are equipped with a blocking device preventing rotation of the rotors (1 , 2) in the direction opposite to the intended direction of rotation.
5
8. Wind power installation according to at least one of the preceding claims, characterized in that the rotors (1 , 2) are fixed to a housing (5) in which the rotor shafts (8 ,
9) are mounted.
ι o 9. Wind power installation according to claim 8, characterized in that the housing (5) also contains the generator (13).
10. Wind power installation according to claims 8 or 9, characterized in that a wind rudder ( 19) is fixed to the housing (5).
1 5
11. Wind power installation, preferably according to one of the preceding claims, characterized in that each rotor blade (3 , 4) consists of two profiles (22, 23) curved in the manner of sails which have a concave outer surface directed towards the wind and constitute a curved flow channel.
20
PCT/EP1995/004958 1994-12-16 1995-12-14 Wind turbine WO1996018815A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420083 1994-12-16
DEG9420083.1U941216 1994-12-16

Publications (1)

Publication Number Publication Date
WO1996018815A1 true WO1996018815A1 (en) 1996-06-20

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ID=6917449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/004958 WO1996018815A1 (en) 1994-12-16 1995-12-14 Wind turbine

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Country Link
WO (1) WO1996018815A1 (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787522A1 (en) 1998-12-22 2000-06-23 Onera (Off Nat Aerospatiale) IMPROVEMENTS TO ENERGY GENERATORS MOVED BY A FLUID CURRENT
KR20020048834A (en) * 2000-12-18 2002-06-24 원인호 Human-type large-scale wind rotator
KR20020059144A (en) * 2001-01-02 2002-07-12 원인호 Double-winged wind rotator production
KR20030014776A (en) * 2001-08-13 2003-02-20 사희명 Double Hub Attached Propeller Type Wind Power Generator
WO2003016712A1 (en) * 2001-08-10 2003-02-27 Kanki, Kenzou Wind power generator
KR100469544B1 (en) * 2002-03-11 2005-02-02 허현강 An electric generating device using a windmill
WO2008064560A1 (en) * 2006-11-28 2008-06-05 Zhencai Xie Multi-stage wind power generation system with load-bearing frames
EP1947329A1 (en) * 2007-01-18 2008-07-23 Ecotecnia Energias Renovables S.L. Wind turbine and method for mitigating the asymmetric loads endured by the rotor or the wind turbine
FR2913254A1 (en) * 2007-03-01 2008-09-05 Jean Noel Biraben Electrical energy producing device for e.g. dwelling, has superimposed wind turbine modules respectively comprising rotors that are rotatably mounted around common vertical axis formed by mast, where rotors are counter-rotative
NO20080229L (en) * 2008-01-14 2009-07-15 Angle Wind As Device by wind turbine
US7679249B2 (en) * 2007-03-02 2010-03-16 Kari Appa Contra rotating generator
US7777360B2 (en) * 2005-03-23 2010-08-17 Gu Duck Hong Windmill-type electric generation system
WO2010117872A3 (en) * 2009-04-06 2011-01-20 Bitar Peter V Coaxial wind turbine
FR2965592A1 (en) * 2010-10-01 2012-04-06 Michel Sene Wind turbine i.e. vertical axis wind turbine, for converting wind energy into electrical energy, has incident air closing units formed of closed surfaces orienting incident air stream on units toward unclosed part of rotor
CN102734089A (en) * 2011-03-29 2012-10-17 高则行 Wind driven generator
JP2013060942A (en) * 2011-05-02 2013-04-04 Sunao Ishimine Wind turbine device
EP2404060A4 (en) * 2009-03-05 2014-08-13 Tarfin Micu Drive system for use with flowing fluids
NL2011247C2 (en) * 2013-07-31 2015-02-03 Vervent B V WIND TURBINE.
WO2014181234A3 (en) * 2013-05-06 2015-04-23 Dattatraya Rajaram Shelke Mechanism for transferring power of contra-rotating rotors to single shaft
CN108869186A (en) * 2018-06-28 2018-11-23 和志耿 A kind of polycyclic poor turn is ingeniously caught wind electricity generating system to formula windward certainly
CN109306936A (en) * 2018-06-05 2019-02-05 太仓新宏电子科技有限公司 A kind of new energy efficient wind power generation method
GB2508814B (en) * 2012-12-05 2020-11-11 Malcolm Ian Bell Hugh Modular high efficiency renewable energy turbine
CN112555090A (en) * 2019-09-10 2021-03-26 徐州戴卡斯町科技有限公司 Fan blade for wind power generation
CN112814845A (en) * 2021-02-04 2021-05-18 和志耿 Umbrella-shaped multi-ring differential rotation type full-fan-blade double-synchronous high-efficiency wind wheel power generation device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR627371A (en) * 1926-01-12 1927-10-03 Inst Voor Aero En Hydro Dynami Device to facilitate the start-up of flow-driven machines
DE1064440B (en) * 1953-12-23 1959-08-27 Rudolf Arnold Erren Wind power plant with several propellers or wind wheels running in opposite directions
US4039848A (en) * 1975-11-10 1977-08-02 Winderl William R Wind operated generator
GB1481699A (en) * 1975-04-14 1977-08-03 Send Eng Ltd Windpowered craft
DE2932293A1 (en) * 1979-08-09 1981-02-26 Rudolf Arnold Erren Wind powered plant with counter-rotating propellers - ensures constant rotational speed relationship, resulting in generator being driven at optimum value
GB2151712A (en) * 1983-12-19 1985-07-24 Sundstrand Corp Ram air turbine
EP0188167A1 (en) * 1984-12-07 1986-07-23 Louis L. Lepoix Rotor for the conversion of moving-fluids energy, particularly wind energy
DE3715265A1 (en) * 1987-05-08 1988-11-24 Imris Pavel Wind turbine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR627371A (en) * 1926-01-12 1927-10-03 Inst Voor Aero En Hydro Dynami Device to facilitate the start-up of flow-driven machines
DE1064440B (en) * 1953-12-23 1959-08-27 Rudolf Arnold Erren Wind power plant with several propellers or wind wheels running in opposite directions
GB1481699A (en) * 1975-04-14 1977-08-03 Send Eng Ltd Windpowered craft
US4039848A (en) * 1975-11-10 1977-08-02 Winderl William R Wind operated generator
DE2932293A1 (en) * 1979-08-09 1981-02-26 Rudolf Arnold Erren Wind powered plant with counter-rotating propellers - ensures constant rotational speed relationship, resulting in generator being driven at optimum value
GB2151712A (en) * 1983-12-19 1985-07-24 Sundstrand Corp Ram air turbine
EP0188167A1 (en) * 1984-12-07 1986-07-23 Louis L. Lepoix Rotor for the conversion of moving-fluids energy, particularly wind energy
DE3715265A1 (en) * 1987-05-08 1988-11-24 Imris Pavel Wind turbine

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787522A1 (en) 1998-12-22 2000-06-23 Onera (Off Nat Aerospatiale) IMPROVEMENTS TO ENERGY GENERATORS MOVED BY A FLUID CURRENT
KR20020048834A (en) * 2000-12-18 2002-06-24 원인호 Human-type large-scale wind rotator
KR20020059144A (en) * 2001-01-02 2002-07-12 원인호 Double-winged wind rotator production
WO2003016712A1 (en) * 2001-08-10 2003-02-27 Kanki, Kenzou Wind power generator
KR20030014776A (en) * 2001-08-13 2003-02-20 사희명 Double Hub Attached Propeller Type Wind Power Generator
KR100469544B1 (en) * 2002-03-11 2005-02-02 허현강 An electric generating device using a windmill
US7777360B2 (en) * 2005-03-23 2010-08-17 Gu Duck Hong Windmill-type electric generation system
CN100460670C (en) * 2006-11-28 2009-02-11 谢振才 Multistage wind wheel generator with load supporting type frame
WO2008064560A1 (en) * 2006-11-28 2008-06-05 Zhencai Xie Multi-stage wind power generation system with load-bearing frames
EP1947329A1 (en) * 2007-01-18 2008-07-23 Ecotecnia Energias Renovables S.L. Wind turbine and method for mitigating the asymmetric loads endured by the rotor or the wind turbine
WO2008087180A3 (en) * 2007-01-18 2009-02-12 Ecotecnia En Renovables Sl Wind turbine and method for mitigating the asymmetric loads endured by the rotor or the wind turbine
WO2008107411A3 (en) * 2007-03-01 2009-03-19 Jean-Noel Biraben Device for generating electric power from the wind motive power
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