WO2008134859A1 - Système de transmission de puissance pour éolienne - Google Patents

Système de transmission de puissance pour éolienne Download PDF

Info

Publication number
WO2008134859A1
WO2008134859A1 PCT/CA2008/000801 CA2008000801W WO2008134859A1 WO 2008134859 A1 WO2008134859 A1 WO 2008134859A1 CA 2008000801 W CA2008000801 W CA 2008000801W WO 2008134859 A1 WO2008134859 A1 WO 2008134859A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission system
torque transmission
driving
driving surface
wind turbine
Prior art date
Application number
PCT/CA2008/000801
Other languages
English (en)
Inventor
Patrice Austin
Jean-Pierre Binda
Nicolas Marcotte
Original Assignee
Turbines Eoliennes Vertica Inc.
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 Turbines Eoliennes Vertica Inc. filed Critical Turbines Eoliennes Vertica Inc.
Priority to MX2009011906A priority Critical patent/MX2009011906A/es
Publication of WO2008134859A1 publication Critical patent/WO2008134859A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/065—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with a plurality of driving or driven shafts
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/10—Means for influencing the pressure between the members
    • 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
    • F05B2260/402—Transmission of power through friction drives
    • F05B2260/4021—Transmission of power through friction drives through belt drives
    • 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
    • F05B2260/402—Transmission of power through friction drives
    • F05B2260/4023—Transmission of power through friction drives through a friction clutch
    • 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 present invention generally relates to electric power generating systems, and more particularly, to wind powered generating systems.
  • a gear assembly or a planetary gear system
  • a gear assembly is interposed between a rotor and a generator such that the input shaft of the gear assembly is connected to the rotating shaft of the wind turbine rotor, and by adjusting the gear ratio of this gear assembly, the rotational speed of the output shaft of the gear assembly which is connected to the rotating shaft of the generator is controlled to be within a predetermined range of rotational speeds.
  • a main disadvantage of a gear assembly is the high maintenance time and cost because of the quantity of gears needed to modify the gear ratio, which increases the probability of failure.
  • a first object of the present invention is to provide a simpler power transmission system for a wind turbine.
  • a further object of the present invention is to provide a power transmission system allowing the installation of a plurality of independent power generation subsystems on the same wind turbine rotor.
  • Another object of the present invention is to provide a power transmission system allowing the installation of more than one independent generator on the same wind turbine rotor.
  • a still further object of the present invention is to provide a power transmission system which can be disconnected from the wind turbine rotor without stopping the wind turbine.
  • the present invention provides a system for transmitting torque from a wind turbine rotor having a base to a power generator.
  • the system comprises a driving surface attached to said base and a means drivingly connecting the driving surface to the generator.
  • the present invention is described for a wind turbine rotor having a plurality of blades disposed between two circular plates, a top plate and a base plate.
  • the blades are preferably located at the circumference of the plates.
  • the torque is transmitted to the generator via a drive system that is driven by the wind turbine rotor through a driving surface.
  • the driving surface refers to the surface on which a first gear or a first wheel is in contact with and from which the torque is transmitted from the wind turbine rotor to a generator.
  • a main advantage of the system described herein is that the configuration needs fewer parts compared to conventional power transmission systems that use a planetary gear system. Furthermore, a plurality of sub-systems may be connected to the same wind turbine rotor. This invention allows each sub-system generator system to be disengaged independently. Finally, the fabrication costs are significantly reduced because the system is conceived to be tolerant to minor construction faults, misalignments, and other faults thus reducing the precision required during the manufacturing process.
  • a first friction wheel, a first gear, a first ribbed wheel or other similar known means is in contact with the driving surface and is driven by the driving surface.
  • the first wheel is drivingly connected to the generator by an axle but it may be any other known means which is able to transmit a torque.
  • the driving surface is located on a surface of the base plate of the wind turbine rotor
  • the driving surface may be horizontal or vertical.
  • the torque may be transmitted to the generator through a second axle.
  • the second axle is driven by a belt (or any other known means to transmit a torque) connected to the first axle.
  • the belt may be connected to both axles or through a second and a third ribbed wheels (or a friction wheel, a gear or other similar known means), attached to the first and second axle, respectively.
  • the belt may comprise tooth to engage gears or ribbed wheels.
  • Means are preferably used to maintain the first wheel, gear or other similar means biased against the driving surface.
  • a disengaging means is preferably used to selectively disengage the driving means.
  • the driving surface is the surface under the base plate, sometimes referred to as the outside surface.
  • an annular ridge may be attached under the base plate of the wind turbine and the horizontal or vertical (internal or external) surfaces of the annular ridge may be used as the driving surface.
  • the driving means is preferably biased towards the driving surface. To disengage the driving means, the bias is released and the driving means is displaced so as to no longer be in contact with the driving surface. It is to be noted that it is possible to have electronically disengaging means (electronically deactivate the generator) instead of mechanical disengaging means.
  • the first friction wheel, the gear or the ribbed wheel (also referred as the "driving means") is installed at a radius R from the center of the wind turbine.
  • the radius R is chosen in regard of the appropriate ratio R/r for the generator(s) installed with the wind turbine.
  • the multiplier ratio of the present invention is R/r, where R is the radius of the position of the driving means on the driving surface from the center of the base plate, and r is the radius of the driving means.
  • R is preferably large in relation to r, it would be very costly to machine a driving surface having little or neither no deformation nor construction fault. Such deformation may cause the driving means to momentarily cease to be in driving contact with the driving surface therefore causing an interruption of power.
  • Biasing means are used to allow the driving means to follow the imperfections and remain in driving contact with the driving surface.
  • the contact between the driving means and the driving surface must be such that the driving surface will transfer the torque generated by the wind turbine to the driving means.
  • High friction surfaces, a gear and a rack or a ribbed wheel and a ribbed ring are preferably used.
  • Figures Ia is a cross-section side view of a first embodiment of the present invention.
  • Figure Ib is a perspective view showing a larger view of a wheel and a support of Figure Ia.
  • Figure Ic is a perspective view showing another embodiment of a support for the wheel.
  • Figure 2a is a cross-section side view showing the base of a wind turbine rotor with a second embodiment of the present invention.
  • Figure 2b is a magnified area of the cross-section view of the Figure 2a.
  • Figure 2c an elevation view of the Figure 2b.
  • Figure 3a and 3b are a front view and an elevation view of another embodiment of the present invention.
  • Figure 4 is a schematic view showing a possible configuration for drivingly connecting a plurality of sub-system generators on the same wind turbine rotor.
  • Figure 5 is perspective view showing an embodiment of the power transmission system of the present invention as installed on a wind turbine.
  • Figure 6 is a side view of an embodiment of the power transmission system.
  • Figures 7a and 7b are a side view and a top perspective view of the power transmission system.
  • FIG. Ia A first embodiment is shown in Figures Ia, Ib and Ic, in which the underneath surface 165 (also referred as the driving surface) of the base plate 160 of a wind turbine rotor (not shown) is used to transmit the torque generated by the rotational movement of the wind turbine rotor to the generators 115 and 130.
  • the first friction wheels 105 and 120 are in driving contact with the driving surface 165 and with the cylindrical supports 140 and 145.
  • the base plate 160 rotates under the action of the wind
  • the first friction wheels 105 and 120 rotate and cause axles 110 and 125 to turn such that torque is transmitted to the generators 115 and 130.
  • the number of generators may vary as is necessary or desired.
  • Figure Ib shows a more detailed view of the first friction wheel 120 and support 145 assembly of Figure Ia.
  • the support 145 is driven by the first friction wheel 120 and it rotates about a horizontal axis of the structure 180.
  • the supports 140 and 145 maintain the vertical position of the wheel and thus maintain the contact between the driving surface 165 and the first friction wheels 105 and 120.
  • the first friction wheels 105 and 120 are positioned at a distance R from the center of the base plate and have a radius r.
  • the multiplier ratio is thus RJr. It is possible to install as many generators as needed, the only limitation being the space available under the wind turbine rotor, the space needed between each power generation system and the torque generated by the wind turbine rotor.
  • Figure Ic shows another embodiment to support the first friction wheel 120.
  • a first bearing 190 and a second bearing 195 are mounted on the axle 125 and are all fixed on the support structure 185.
  • the position of the support structure is controlled by the disengaging means 175, which may comprise, for example, a spring, a pneumatic drive, a worm drive or any other actuator.
  • the first friction wheel 120 may be pressed against the base plate 160 and may be disengaged when the support structure 185 is pulled down by the disengaging means 175. It is to be noted that even if the support structure 185 is shown with two axel supports, it is possible to have only one or more than two such supports.
  • Figure 2a shows a second embodiment of the present invention comprising a base plate 260 of a wind turbine rotor (not shown) and an annular ridge 235 is fixed under the base plate 260.
  • a rack or ribbed ring 230 having a radius R is fixed on the vertical internal surface, or driving surface, of the annular ridge 235.
  • the first gear or the first ribbed wheel 210 having a radius r is shown on the magnified area of Figure 2b and in Figure 2c.
  • the first gear 210 is biased with the disengaging means 255 towards the rack 230 by a spring 250 or other known means to maintain the first gear 210 in engagement with the rack 230, as shown in Figure 2c.
  • the bias is applied to the first gear 210 through the elongated members 240 and 245 which also retain the biasing wheel 215.
  • the ribbed ring 230 preferably has the highest radius R to increase the multiplier ratio RJr.
  • Figure 3 shows another embodiment of the present invention.
  • the wheel 315 and the gear 310 and between them the space 350 where the annular ridge and the rack are normally located.
  • a bias is applied by the disengaging means 355 with a sliding part 330 which is comprised in the guiding part 335.
  • the sliding part 330 is biased towards the rack by a spring, a pneumatic drive, a worm drive or any other known means.
  • the bias maintains the engagement between the rack and the gear or ribbed ring 310. It also allows the disengagement of the wheel or ribbed ring 310 from the rack with no need to stop the wind turbine rotor.
  • a controlled actuator may be used instead of a spring, such as a pneumatic drive, a worm drive, or any other actuator.
  • FIG 4 is a schematic view showing the possibility of installing more than one generation sub-system.
  • the circle 490 represents the driving surface of a base plate similar to the one shown as element 165 in Figure Ia and each generation sub- system 410, 412, 414 and 416 comprise a generator (415, 425, 435, 445), a wheel (412, 422, 432, 442) and a shaft (schematically shown in Figure 4 as 417, 427, 437, 447).
  • a generator 415, 425, 435, 445
  • wheel 412, 422, 432, 442
  • a shaft (schematically shown in Figure 4 as 417, 427, 437, 447).
  • four generation sub-systems are shown but it is possible to install more or less than four generation sub-systems.
  • the power transmission system is shown as installed on a wind turbine.
  • the surface 540 is the underside of the base plate of a wind turbine on which is attached an annular ridge 510.
  • the annular ridge 510 is schematically represented by a planar surface in Figure 5. In reality, the annular ridge would be thicker and it would have a ribbed surface to drive the ribbed wheel 520.
  • the rotation is transmitted to the generator (not shown) with a axle 660.
  • the axle 660 is driven by the third ribbed wheel 650 which is in turn driven by a belt (not shown).
  • the belt is driven by the second ribbed wheel 640 which is attached to the same axle than the first ribbed wheel 620 which is driven by the driving surface (not shown).
  • the driving surface is to be placed between the ribbed wheel 620 and the biasing wheel 630.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention divulgue un système de transmission de puissance pour éolienne. Le système de transmission de puissance permet l'installation de plusieurs générateurs indépendants. En outre, dans un mode de réalisation préféré, chaque système de transmission de puissance peut être indépendamment désaccouplé de l'éolienne, sans nécessiter l'arrêt de la rotation de l'éolienne.
PCT/CA2008/000801 2007-05-04 2008-04-29 Système de transmission de puissance pour éolienne WO2008134859A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MX2009011906A MX2009011906A (es) 2007-05-04 2008-04-29 Sistema de transmision de potencia para una turbina de viento.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,587,354 2007-05-04
CA002587354A CA2587354A1 (fr) 2007-05-04 2007-05-04 Systeme de transport d'energie pour eolienne

Publications (1)

Publication Number Publication Date
WO2008134859A1 true WO2008134859A1 (fr) 2008-11-13

Family

ID=39941622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2008/000801 WO2008134859A1 (fr) 2007-05-04 2008-04-29 Système de transmission de puissance pour éolienne

Country Status (3)

Country Link
CA (1) CA2587354A1 (fr)
MX (1) MX2009011906A (fr)
WO (1) WO2008134859A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130115086A1 (en) * 2011-11-04 2013-05-09 Steven C. Hench Vertical axis wind turbine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350895A (en) * 1980-03-03 1982-09-21 Windpowered Machines Ltd. Wind turbine and method for power generation
US5743712A (en) * 1995-04-06 1998-04-28 Prime Energy Corporation Turbine support and energy tranformation
CA2522280A1 (fr) * 2003-04-17 2004-10-28 New World Generation Inc. Turbine eolienne a prise de force par entrainement par friction sur le bord exterieur
US6984899B1 (en) * 2004-03-01 2006-01-10 The United States Of America As Represented By The Secretary Of The Navy Wind dam electric generator and method
US20060108809A1 (en) * 2004-11-19 2006-05-25 Saverio Scalzi Protective wind energy conversion chamber
US20060232076A1 (en) * 2005-04-14 2006-10-19 Natural Forces, Llc Reduced friction wind turbine apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350895A (en) * 1980-03-03 1982-09-21 Windpowered Machines Ltd. Wind turbine and method for power generation
US5743712A (en) * 1995-04-06 1998-04-28 Prime Energy Corporation Turbine support and energy tranformation
CA2522280A1 (fr) * 2003-04-17 2004-10-28 New World Generation Inc. Turbine eolienne a prise de force par entrainement par friction sur le bord exterieur
US6984899B1 (en) * 2004-03-01 2006-01-10 The United States Of America As Represented By The Secretary Of The Navy Wind dam electric generator and method
US20060108809A1 (en) * 2004-11-19 2006-05-25 Saverio Scalzi Protective wind energy conversion chamber
US20060232076A1 (en) * 2005-04-14 2006-10-19 Natural Forces, Llc Reduced friction wind turbine apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130115086A1 (en) * 2011-11-04 2013-05-09 Steven C. Hench Vertical axis wind turbine

Also Published As

Publication number Publication date
CA2587354A1 (fr) 2008-11-04
MX2009011906A (es) 2009-12-01

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