WO2013053874A2 - A wind turbine - Google Patents

A wind turbine Download PDF

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Publication number
WO2013053874A2
WO2013053874A2 PCT/EP2012/070234 EP2012070234W WO2013053874A2 WO 2013053874 A2 WO2013053874 A2 WO 2013053874A2 EP 2012070234 W EP2012070234 W EP 2012070234W WO 2013053874 A2 WO2013053874 A2 WO 2013053874A2
Authority
WO
WIPO (PCT)
Prior art keywords
wind
wind turbine
blade system
shaft
blade
Prior art date
Application number
PCT/EP2012/070234
Other languages
French (fr)
Other versions
WO2013053874A3 (en
Inventor
Mustafa Seyfi GURSEL
Original Assignee
Gursel Mustafa Seyfi
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 Gursel Mustafa Seyfi filed Critical Gursel Mustafa Seyfi
Publication of WO2013053874A2 publication Critical patent/WO2013053874A2/en
Publication of WO2013053874A3 publication Critical patent/WO2013053874A3/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
    • 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
    • F03D7/0276—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
    • 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 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F03D3/0436—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels for shielding one side of the rotor
    • F03D3/0445—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels for shielding one side of the rotor the shield being fixed with respect to the wind motor
    • 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 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • 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
    • 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 present invention relates to wind turbines driven by means of wind energy.
  • Wind as a clean source of energy, is one of the energy resources preferred particularly in the generation of electricity.
  • Wind turbines are used to obtain electrical energy from the wind, which first convert the wind energy into mechanical energy, and then the mechanical energy into electrical energy.
  • Wind turbines comprise at least one blade system rotating by means of wind energy and at least one electric generator connected to the blade system preferably by means of a shaft.
  • electric generators When driven under constant speeds (i.e. when the shaft is rotated under a constant speed), electric generators can generate electricity at a constant voltage. For this reason, in order to obtain electricity at a constant voltage from wind turbines, the blade system should be rotated under a constant speed.
  • brake elements are used on the blade system in order to provide the blade system with a constant speed. These brake elements provide a constant speed for the blade system by acting on the latter according to the speed of wind (e.g. when the wind blows above a certain level, it decelerates the blade system).
  • the brake elements in these systems slows down the mechanical energy as a result of friction. Therefore, in these systems, energy is used inefficiently, as well as the turbine and turbine blades may be damaged due to friction.
  • the wind turbine developed according to the present invention comprises at least one body; at least one shaft connected to said body by at least one side thereof; at least one blade system connected to said shaft and driving said shaft when the wind strikes at least one blade thereof; and at least one wind guide controlling the amount of wind striking the blades in the blade system by moving relative to the body.
  • the wind turbine comprises at least one electric generator disposed in the body and connected to the shaft. Said generator is capable to generate electricity at different voltages and/or currents (i.e. at different power levels e.g. 10 - 20 - 30 kW) under rotational speeds of different stages (e.g. 60 rpm, 120 rpm, 180 rpm, etc.). Thus, electrical energy is generated efficiently under different wind speeds.
  • the efficiency of the mechanical energy obtained from the wind is increased by means of the wind guide. Additionally, electricity is generated at different voltages and/or currents under different wind speeds by means of the electric generator which is operable at different stages. Thus, the total energy production of the wind turbine is made more efficient.
  • the object of the present invention is to develop a wind turbine which is capable to convert wind energy into mechanical energy.
  • Another object of the present invention is to develop a wind turbine which is capable to convert the mechanical energy generated by means of wind into electrical energy.
  • a further object of the present invention is to develop a wind turbine comprising a blade system which is capable to rotate at a constant speed under different wind speeds.
  • Another object of the present invention is to develop a wind turbine which is capable to generate electrical energy at constant voltages under different wind speeds.
  • a further object of the present invention is to develop a reliable and efficient wind turbine.
  • Figure 1 is a perspective illustration of a wind turbine.
  • Figure 2 is a front illustration of the wind turbine.
  • FIG 3 is a top illustration of the wind turbine. The parts in said figures are individually referenced as following.
  • wind turbine (E)
  • Wind as a clean source of energy, is one of the energy resources preferred particularly in the generation of electricity, as a result of converting wind energy into mechanical energy.
  • the mechanical energy is then used for different purposes (e.g. for drawing water from a water source).
  • a wind turbine is developed according to the present invention, which is capable to produce mechanical energy from the wind.
  • the wind turbine (E) comprises at least one body (3); at least one shaft (4) connected by at least one side thereof to said body (3); at least one blade system (1 ) connected to said shaft (4) and driving said shaft (4) when the wind (S) strikes at least one blade (1 a) thereof; and at least one wind guide (2) controlling the amount of wind (S) striking the blades (1 a) in the blade system (1 ) by moving relative to the body (3).
  • Said wind guide (2) prevents negative winds (S) (i.e.
  • the amount of wind (S) coming to the blades (1 a) in the blade system (1 ) according to the speed of wind (S) is controlled by means of the wind guide (2).
  • the blade system (1 ) is moved at a desired constant speed under different speeds of the wind (S).
  • a vacuum effect is produced on the blades (1 a), which remain on the part of the blade system (1 ) covered by said wind guide (2), by means of the wind (S) which crosses over the wind guide (2).
  • the force acting on the blade system (1 ) is increased and the wind turbine (E) is operated more efficiently.
  • the wind turbine (E) comprises at least one drive system (not shown in the figures) to connect the wind guide (2) to the body (3) in a movable manner.
  • the wind guide (2) is moved relative to the body (3) using said drive system.
  • That drive system can comprise (3) a drive socket disposed in the body (3) and at least one drive element (e.g. a wheel) movable in said drive socket and connected by at least one side thereof to the wind guide (2).
  • the wind guide (2) has a two-part configuration of which the parts can move relative to each other.
  • the wind guide (2) is fixed to the body (3) by at least one part thereof.
  • the wind guide (2) is moved relative to the body (3) when the remaining parts thereof are moved relative to the part that is fixed to the body (3).
  • the blade system (2) can control the amount of wind (S) reaching the blades (1 a).
  • the wind turbine (E) developed according to the present invention it is also possible to make use of the strong winds (S) blowing from higher points by controlling the amount of wind reaching the blades (1 a).
  • the wind turbine (E) also comprises at least one electric generator (not shown in the figures), which is disposed in the body (3) and to which the shaft (4) is connected.
  • the motion that results when the wind (S) drives the blades system (1 ) is transmitted to the electric generator by means of the shaft (4).
  • electrical energy is obtained from the wind (S).
  • using the wind guide (2) both allows to move the blade system (1 ) at a constant speed, and the electric generator is enabled to generate electricity at a constant voltage.
  • said generator is structured to generate electricity at different voltages and/or currents under rotational speeds of different stages (e.g. 60 rpm, 120 rpm, 180 rpm, etc.).
  • electricity is generated at different voltages and/or currents (i.e. at different power levels e.g. 10 - 20 - 30 kW) under different wind (S) speeds.
  • S wind
  • electricity is generated even at very low and very high wind (S) speeds and the wind energy is used in an efficient manner.
  • the blade system (1 ) and the shaft (4) transmitting the motion of the blade system (1 ) to the body (3) are vertically positioned.
  • the winds (S) blowing from the sea in coastal regions can be used by said blade system (1 ) in an efficient manner.
  • This embodiment also makes it possible to operate the wind turbine (E) with a lower noise, since the blade system (1 ) rotates without showing any resistance to the wind (S).
  • the wind turbine (E) is prevented from making noise pollution and can be disposed at locations close to residential areas.
  • the blades (1 a) making the blade system (1 ) have a curved structure.
  • the wind turbine (E) comprises at least one sensor (not illustrated in the figures) detecting the direction and strength of the wind (S), and at least one control unit (not illustrated in the figures) controlling the movement of the wind guide (2) according to the data about the wind (S) direction and strength detected by means of said sensor.
  • the position of the wind guide (2) is automatically adjusted according to the direction and strength of the wind (S).
  • the efficiency of the mechanical energy obtained from the wind is increased by means of the wind guide (2). Additionally, electricity is generated at different voltages and/or currents under different wind speeds by means of the electric generator which can be operated at different stages. Thus, the total energy production of the wind turbine (E) is made more efficient.

Abstract

The wind turbine (E) developed according to the present invention comprises at least one body (3); at least one shaft (4) connected by at least one side thereof to said body (3); at least one blade system (1) connected to said shaft (4) and driving the shaft (4) to which it is connected when the wind (S) strikes at least one blade (1a) thereof; and at least one wind guide (2) controlling the amount of wind (S) striking the blades (1a) in the blade system (1) by moving relative to the body (3).

Description

DESCRIPTION A WIND TURBINE Field of Invention
The present invention relates to wind turbines driven by means of wind energy. Prior Art
Wind, as a clean source of energy, is one of the energy resources preferred particularly in the generation of electricity. Wind turbines are used to obtain electrical energy from the wind, which first convert the wind energy into mechanical energy, and then the mechanical energy into electrical energy. Wind turbines comprise at least one blade system rotating by means of wind energy and at least one electric generator connected to the blade system preferably by means of a shaft. When driven under constant speeds (i.e. when the shaft is rotated under a constant speed), electric generators can generate electricity at a constant voltage. For this reason, in order to obtain electricity at a constant voltage from wind turbines, the blade system should be rotated under a constant speed. Since, however, the rotation speed of the blade system depends on the speed of wind and since the speed of wind cannot be controlled, it is difficult to generate electricity at a constant voltage in wind turbines. According to the prior art, brake elements are used on the blade system in order to provide the blade system with a constant speed. These brake elements provide a constant speed for the blade system by acting on the latter according to the speed of wind (e.g. when the wind blows above a certain level, it decelerates the blade system). The brake elements in these systems, on the other hand, slows down the mechanical energy as a result of friction. Therefore, in these systems, energy is used inefficiently, as well as the turbine and turbine blades may be damaged due to friction. In the patent document US4355955A according the prior art is disclosed a wind turbine system with a controllable rotor speed. That system comprises a blade system having at least one blade and a generator coupled to the blade system by means of at least one rotor thereof. The blade system and the rotor connected thereto are moved under a constant speed by changing the pitch angels of said blades. In that system, however, changing the pitch angles of moving blades is both difficult and may be risky.
Brief Description of Invention
The wind turbine developed according to the present invention comprises at least one body; at least one shaft connected to said body by at least one side thereof; at least one blade system connected to said shaft and driving said shaft when the wind strikes at least one blade thereof; and at least one wind guide controlling the amount of wind striking the blades in the blade system by moving relative to the body. In an alternative embodiment of the present invention, the wind turbine comprises at least one electric generator disposed in the body and connected to the shaft. Said generator is capable to generate electricity at different voltages and/or currents (i.e. at different power levels e.g. 10 - 20 - 30 kW) under rotational speeds of different stages (e.g. 60 rpm, 120 rpm, 180 rpm, etc.). Thus, electrical energy is generated efficiently under different wind speeds.
In the wind turbine developed according to the present invention, the efficiency of the mechanical energy obtained from the wind is increased by means of the wind guide. Additionally, electricity is generated at different voltages and/or currents under different wind speeds by means of the electric generator which is operable at different stages. Thus, the total energy production of the wind turbine is made more efficient.
Object of Invention The object of the present invention is to develop a wind turbine which is capable to convert wind energy into mechanical energy.
Another object of the present invention is to develop a wind turbine which is capable to convert the mechanical energy generated by means of wind into electrical energy.
A further object of the present invention is to develop a wind turbine comprising a blade system which is capable to rotate at a constant speed under different wind speeds. Another object of the present invention is to develop a wind turbine which is capable to generate electrical energy at constant voltages under different wind speeds.
A further object of the present invention is to develop a reliable and efficient wind turbine.
Description of Figures
Illustrative embodiments of the wind turbine developed according to the present invention are illustrated in accompanying figures briefly described below.
Figure 1 is a perspective illustration of a wind turbine.
Figure 2 is a front illustration of the wind turbine.
Figure 3 is a top illustration of the wind turbine. The parts in said figures are individually referenced as following. wind turbine (E)
wind (S)
blade system (1 )
blade (1 a)
wind guide (2)
body (3)
shaft (4) Description of Invention
Wind, as a clean source of energy, is one of the energy resources preferred particularly in the generation of electricity, as a result of converting wind energy into mechanical energy. The mechanical energy is then used for different purposes (e.g. for drawing water from a water source). Thus, a wind turbine is developed according to the present invention, which is capable to produce mechanical energy from the wind.
As illustrated in figures 1 to 3, the wind turbine (E) comprises at least one body (3); at least one shaft (4) connected by at least one side thereof to said body (3); at least one blade system (1 ) connected to said shaft (4) and driving said shaft (4) when the wind (S) strikes at least one blade (1 a) thereof; and at least one wind guide (2) controlling the amount of wind (S) striking the blades (1 a) in the blade system (1 ) by moving relative to the body (3). Said wind guide (2) prevents negative winds (S) (i.e. winds (S) coming from the direction opposite to the movement of the blade system (1 )) acting on the blade system (1 ) on the one hand, and on the other hand, controls the amount of wind (S) acting on the blades (1 a) so as to control the rotational speed of the blade system (1 ) as well.
In the wind turbine (E) developed according to the present invention, the amount of wind (S) coming to the blades (1 a) in the blade system (1 ) according to the speed of wind (S) is controlled by means of the wind guide (2). Thus, the blade system (1 ) is moved at a desired constant speed under different speeds of the wind (S). Additionally, a vacuum effect is produced on the blades (1 a), which remain on the part of the blade system (1 ) covered by said wind guide (2), by means of the wind (S) which crosses over the wind guide (2). Thus, the force acting on the blade system (1 ) is increased and the wind turbine (E) is operated more efficiently.
In a preferred embodiment of the present invention, the wind turbine (E) comprises at least one drive system (not shown in the figures) to connect the wind guide (2) to the body (3) in a movable manner. In this embodiment, the wind guide (2) is moved relative to the body (3) using said drive system. That drive system can comprise (3) a drive socket disposed in the body (3) and at least one drive element (e.g. a wheel) movable in said drive socket and connected by at least one side thereof to the wind guide (2). In an alternative embodiment of the present invention, the wind guide (2) has a two-part configuration of which the parts can move relative to each other. In this embodiment, the wind guide (2) is fixed to the body (3) by at least one part thereof. The wind guide (2) is moved relative to the body (3) when the remaining parts thereof are moved relative to the part that is fixed to the body (3). Thus, the blade system (2) can control the amount of wind (S) reaching the blades (1 a). In the wind turbine (E) developed according to the present invention, it is also possible to make use of the strong winds (S) blowing from higher points by controlling the amount of wind reaching the blades (1 a). In a preferred embodiment of the present invention, the wind turbine (E) also comprises at least one electric generator (not shown in the figures), which is disposed in the body (3) and to which the shaft (4) is connected. In this embodiment, the motion that results when the wind (S) drives the blades system (1 ) is transmitted to the electric generator by means of the shaft (4). Thus, electrical energy is obtained from the wind (S). In this embodiment, using the wind guide (2) both allows to move the blade system (1 ) at a constant speed, and the electric generator is enabled to generate electricity at a constant voltage.
In a preferred embodiment of the present invention, said generator is structured to generate electricity at different voltages and/or currents under rotational speeds of different stages (e.g. 60 rpm, 120 rpm, 180 rpm, etc.). In this embodiment, electricity is generated at different voltages and/or currents (i.e. at different power levels e.g. 10 - 20 - 30 kW) under different wind (S) speeds. Thus, electricity is generated even at very low and very high wind (S) speeds and the wind energy is used in an efficient manner.
In another preferred embodiment of the present invention, the blade system (1 ) and the shaft (4) transmitting the motion of the blade system (1 ) to the body (3) are vertically positioned. Thus, particularly the winds (S) blowing from the sea in coastal regions can be used by said blade system (1 ) in an efficient manner. This embodiment also makes it possible to operate the wind turbine (E) with a lower noise, since the blade system (1 ) rotates without showing any resistance to the wind (S). Thus, the wind turbine (E) is prevented from making noise pollution and can be disposed at locations close to residential areas. In another preferred embodiment of the present invention, the blades (1 a) making the blade system (1 ) have a curved structure. In this embodiment, the amount of wind acting on the blades (1 a) is increased due to this curved structure. Thus, efficient mechanical energy is obtained from the wind (S). In a preferred embodiment of the present invention, the wind turbine (E) comprises at least one sensor (not illustrated in the figures) detecting the direction and strength of the wind (S), and at least one control unit (not illustrated in the figures) controlling the movement of the wind guide (2) according to the data about the wind (S) direction and strength detected by means of said sensor. Thus, the position of the wind guide (2) is automatically adjusted according to the direction and strength of the wind (S).
In the wind turbine (E) developed according to the present invention, the efficiency of the mechanical energy obtained from the wind is increased by means of the wind guide (2). Additionally, electricity is generated at different voltages and/or currents under different wind speeds by means of the electric generator which can be operated at different stages. Thus, the total energy production of the wind turbine (E) is made more efficient.

Claims

1. A wind turbine (E) comprising at least one body (3); at least one shaft (4) connected by at least one side thereof to said body (3); at least one blade system (1 ) connected to said shaft (4) and driving the shaft (4) to which it is connected when the wind (S) strikes at least one blade (1 a) thereof, characterized by comprising
at least one wind guide (2) controlling the amount of wind (S) striking the blades (1 a) in the blade system (1 ) by moving relative to the body (3).
2. A wind turbine (E) according to Claim 1 , characterized by comprising at least one drive system to connect the wind guide (2) to the body (3) in a movable manner.
3. A wind turbine (E) according to Claim 2, characterized in that said drive system comprises at least one drive socket disposed in the body (3).
4. A wind turbine (E) according to Claim 3, characterized in that said drive system comprises at least one drive element, which is capable to move in said drive socket, and is connected to the wind guide (2) by at least one side thereof.
5. A wind turbine (E) according to Claim 1 , characterized in that the wind guide (2) is configured of at least two parts, which can move relative to each other.
6. A wind turbine (E) according to Claim 5, characterized in that the wind guide (2) is fixed to the body (3) by at least one part thereof.
7. A wind turbine (E) according to Claim 1 , characterized by comprising at least one electric generator, which is disposed in the body (3) and to which the shaft (4) is connected.
8. A wind turbine (E) according to Claim 7, characterized in that said generator has a structure which is capable to generate electricity at different voltages and/or currents under rotational speeds at different stages.
1
9. A wind turbine (E) according to Claim 1 , characterized in that the blade system (1 ) and the shaft (4) transmitting the motion of the blade system (1 ) to the body are positioned vertically.
10. A wind turbine (E) according to Claim 1 , characterized in that the blades (1 a) making the blade system (1 ) have a curved structure.
11. A wind turbine (E) according to Claim 1 , characterized by comprising at least one sensor detecting the direction and strength of the blowing wind (S).
12. A wind turbine (E) according to Claim 1 1 , characterized by comprising at least one control unit controlling the movement of the wind guide (2) according to the data on the direction and strength of the wind (S) as detected by means of said sensor.
2
PCT/EP2012/070234 2011-10-14 2012-10-12 A wind turbine WO2013053874A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2011/10229 2011-10-14
TR201110229 2011-10-14

Publications (2)

Publication Number Publication Date
WO2013053874A2 true WO2013053874A2 (en) 2013-04-18
WO2013053874A3 WO2013053874A3 (en) 2013-06-27

Family

ID=47088826

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/070234 WO2013053874A2 (en) 2011-10-14 2012-10-12 A wind turbine

Country Status (1)

Country Link
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355955A (en) 1981-04-06 1982-10-26 The Boeing Company Wind turbine rotor speed control system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1808874A (en) * 1928-02-24 1931-06-09 Earle F Wilson Wind motor
US1812741A (en) * 1930-01-31 1931-06-30 Espinosa Eduardo Jimenez Windmill
US4031405A (en) * 1975-08-04 1977-06-21 Paul Asperger Windmill with shroud adjusting means
GB2168763A (en) * 1984-12-19 1986-06-25 Anthony Close Vertically mounted wind generator
DE3631709A1 (en) * 1986-09-18 1988-03-24 Adrian Van Hees Tower-type vertical wind turbine
US20050286996A1 (en) * 2004-06-29 2005-12-29 Kun-Lung Tsai Wind-guiding device for windmill generator
EP1645753A2 (en) * 2004-10-10 2006-04-12 Don-Fong Yeh Wind-guiding apparatus for a wind power generator
ITFI20060339A1 (en) * 2006-12-27 2008-06-28 Franco Tozzi WIND GENERATOR

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355955A (en) 1981-04-06 1982-10-26 The Boeing Company Wind turbine rotor speed control system

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