GB2449436A - Fluid driven generator - Google Patents

Fluid driven generator Download PDF

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Publication number
GB2449436A
GB2449436A GB0709699A GB0709699A GB2449436A GB 2449436 A GB2449436 A GB 2449436A GB 0709699 A GB0709699 A GB 0709699A GB 0709699 A GB0709699 A GB 0709699A GB 2449436 A GB2449436 A GB 2449436A
Authority
GB
United Kingdom
Prior art keywords
rotor
generator
water
driven
blades
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Withdrawn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
GB0709699A
Other versions
GB0709699D0 (en
Inventor
Jeremy Richard Thake
Christopher Sha Huxley-Reynard
George James Gibberd
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.)
Tidal Generation Ltd
Original Assignee
Tidal Generation Ltd
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 Tidal Generation Ltd filed Critical Tidal Generation Ltd
Priority to GB0709699A priority Critical patent/GB2449436A/en
Publication of GB0709699D0 publication Critical patent/GB0709699D0/en
Publication of GB2449436A publication Critical patent/GB2449436A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70Bearing or lubricating arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/06Bearing arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10Submerged units incorporating electric generators or motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10Submerged units incorporating electric generators or motors
    • F03B13/105Bulb groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00Other machines or engines
    • F03B17/06Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • F03D11/0008
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D15/00Transmission of mechanical power
    • F03D15/20Gearless transmission, i.e. direct-drive
    • F03D9/002
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20Wind motors characterised by the driven apparatus
    • F03D9/25Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08Structural association with bearings
    • H02K7/086Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H02K7/088Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807Rotary generators
    • H02K7/1823Rotary generators structurally associated with turbines or similar engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00Application
    • F05B2220/70Application in combination with
    • F05B2220/706Application in combination with an electrical generator
    • F05B2220/7066Application in combination with an electrical generator via a direct connection, i.e. a gearless transmission
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

A device generates electricity from a moving fluid, the device comprises a generator having a rotating outer ring 7 with magnetic poles on an inner surface thereof, the outer ring 7 being rotatable by a fluid driven bladed rotor 1. The generator also has a stationary inner ring 8 having coils which in use generate electricity. The bladed rotor 1 may be driven by water or wind, and may be directly attached to the outer ring 7 of the generator, or supported separately there from and connected there to by torque transmission means. The blades may have a fixed pitch or may be adjustable. When driven by water, bearings 6 of the device may be water lubricated.

Description

1 2449436 Title: Fluid Powered Generator
Background
Free-stream fluid powered generators such as wind and water-current turbines generally use the kinetic energy in the fluid flow to drive a rotor. For larger machines these rotors are relatively slow moving, and it is common to use a gearbox to increase the rotational speed for input to an electrical generator. Gearboxes have numerous moving and loaded components, and are often a weak point in the system, a problem compounded by the large variability in input power due to turbulence in the fluid flow. A further difficulty is that, as rotor diameter increases to capture more power, the size and weight of the gearbox required increases sharply.
Some existing fluid power generators eliminate the gearbox by using large-diameter, slow-speed electrical generators that are direct-coupled to the rotor. The layouts of these machines fall into two broad categories: the generator is either attached to the centre of the fluid rotor, or to the outside of it.
In the first arrangement the generator is driven by the hub of the fluid rotor. The generator has :... an internal rotor which provides a magnetic field and which is directly coupled to the fluid rotor.
The stator of the generator is a series of coils in a ring around the outside of the generator rotor, * * and electricity is generated in these coils as the field magnetism of the rotor rotates inside it.
The stator is prevented from rotating by being fixed to the structure of the turbine. The * mechanical details of providing bearing support for the fluid rotor and the generator rotor, and of * transmitting torque into the generator rotor, tend to make for very heavy structures, particularly as rotor diameters increase. * **
* In the second arrangement the generator is driven by the outside diameter of the fluid rotor blades, and forms a ring around the rotor rim. While this arrangement works for moderate diameters, at larger sizes the generator becomes a very large, relatively thin hoop. It becomes difficult to maintain sufficient stiffness in the rotor and the stator rings, and to control the gap between the rotor and the stator. The shear size of the generator is likely to make it expensive, and it is problematic to hold the structure in the flow.
The invention described here is a convenient means of eliminating a gearbox in a fluid-powered generator by incorporating a direct-drive generator in a manner that is simple, scaleable, and more robust than existing solutions.
Prior Art
Large electrical direct-drive machines, both motors and generators, are known in a number of industries. By using large numbers of poles, a slow rotational speed can be achieved, allowing the elimination of a gearbox between the electrical machine and the mechanical input or output.
Examples are electrical drives for process industries, generators for direct-drive hydropower, wind and tidal turbines (US Patent No. 6,957,947 illustrates such a turbine for use in water), and rim thrusters for ships. These electrical machines are configured with an internal rotor with magnets (or coils producing the field magnetism) around its roughly-cylindrical outside surface, and an stator made up of coils in a ring surrounding the rotor in which the rotating magnetic field of the rotor generates an alternating current.
It is becoming increasingly common for the field magnetism in such machines to be produced by rare earth permanent magnets. The strength of magnetic field that can be produced by such magnets has increased considerably in recent years, while production costs have become lower, making these a viable and economic option.
In most direct drive electrical machines the gap between the rotor and stator is filled with air, but in some devices, notably certain models of rim thrusters and tidal turbines, this gap may be filled with water.
Statement of the Invention
* The invention uses a large-diameter direct-drive generator to produce power from a fluid-driven rotor. It inverts the normal layout of a direct drive generator by having the stationary element of the generator on the inside containing the coils in which electricity is generated, and the field magnets rotating in a ring on the outside. The main part of the rotor is external to the generator.
Advantages *. : The layout of the fluid-powered generator simplifies the attachment of, and transmission of torque from, the fluid rotor to the electrical rotor for a machine in which the fluid rotor is substantially outside the generator.
Preferably, for a generator working in water, the invention further simplifies the machine by allowing part of the flow to pass through the bearings and in the gap between the generator rotor and stator to provide both lubrication and cooling.
Introduction to Drawings
The invention may more easily be understood by referring to the various figures accompanying this text: * Figure 1 shows two simplified views of the turbine: to the left, a front view of the turbine, and to the right a side view.
* Figure 2 shows an expanded version of the side view in Figure 1, but in cross-section through the fluid generator on its centreline.
* Figure 3 shows a cross-sectional view similar to Figure 2, but is for an alternative embodiment of the invention.
Detailed Description
Referring to Figure 1, the machine has a rotor I which has one or more blades 2 attached externally to a hub 3. The rotor 3 is turned about an axis 5 by the fluid flow, which is approximately parallel to axis 5. The rotor 1 has a bearing arrangement which locates it on the body or nacelle of the machine 4, allowing it to rotate relative to the nacelle 4. The nacelle is held in the flow so that the current flows past it. This may be achieved in a variety of ways, for example, by attaching it to a rigid foundation that is located on the ground below the machine, attaching it to some other structure, or providing sufficient buoyancy or dynamic lift that it holds itself up in the fluid and tethenng it to the ground with suitable ropes, chains, rods, beams or similar elements. The nacelle may swivel, yaw or pivot in such a way that it aligns with the direction of flow, or it may be fixed.
Referring to Figure 2, the rotor I is located on the nacelle by bearings 6 whose axes coincide with the axis of rotation 5. The main working elements of the electrical generator are 7 and 8.
: .. * The rotating part of the generator is its rotor 7 which produces the field magnetism and which is *.
attached to the hub 3 of the fluid rotor I and rotates with it. The stator 8 is fixed to the nacelle 4 and does not rotate, and contains the coils in which electrical power is produced.
s The generator may operate on principles similar to those of a number of different types of known generator, for example with permanent magnet or electromagnetic field excitation, * electricity generation being synchronous or asynchronous with the rotational speed. The * : . innovation is to invert the normal arrangement of the generator for this application such that the stationary coils 8 are on the inside of the generator, and the rotating magnetic field 7 is on the outside.
In a preferred embodiment no active electrical connections are required from the nacelle 4 to the generator rotor 7, by using permanent magnets in the rotor 7 to produce the field excitation.
Alternatively the rotor 7 could be made with current coils excited by the field of the stator in a manner similar to that of a standard induction generator. Other embodiments could have active electrical excitation of the field coils by having slip-rings or a rotating transformer to supply power from the nacelle 4 to the rotor 7.
A particular preferred embodiment for when the fluid generator is designed to operate in water has plain bearings that use water to lubricate them. In this embodiment, the bearings and the gap 9 between the generator rotor 7 and stator 8 can be filled with water, and seals are not required to keep water out. Alternatively, non-contact labyrinth seals can be used to keep debris out of the bearings 6 and gap 9 while allowing some flow of water into the gap 9. The advantage of having water present is that it can provide lubncation and cooling to the bearings 6, and cooling for the generator. Water is excluded from the rotor 7 and stator 8 by suitable encapsulation of the rotor 7 or stator 8 or treatment of the surfaces in contact with the water.
This embodiment has considerable simplicity over other arrangements. Other embodiments require various leak-proof seals to keep the bearings 6 or the gap 9 dry or filled with a separate lubricating fluid.
The embodiment in Figure 2 shows the bearings 6 supporting both the fluid rotor and the generator rotor. Another embodiment is illustrated in Figure 3, which again shows a cross-section through the fluid-driven generator. Here the rotor 1 rotates on its own set of bearings 10, while the generator has an independent set of beanngs 11. A coupling 14 transmits torque from the hub 3 to the structure 12 supporting the generator rotor 7.
The embodiment in Figure 2 has blades that are fixed to the rotor hub 3. The blades can also have bearings at their roots and a mechanism to pitch them so as to change the angle of attack of the blade foil sections to the incoming flow. In the embodiment in Figure 3 the blades 2 are shown connected to the hub 3 with bearings 15 that allow them to rotate around their axes. The . pitch mechanism is not shown, but many different mechanisms are known to those skilled in the *... art. * * * S..
The embodiment in Figure 3 illustrates seals 13 that are used to exclude water from the * S. * S * generator. I. S * S S * *S ** . * *S * *S

Claims (13)

  1. Claims: 1. A device to generate electricity from the kinetic energy of
    moving fluid in which the generator has: a. a rotating outer ring with magnetic poles on its inside surface directly driven by a hub which is turned by the dynamic forces of the fluid on the blade or blades which are attached to the outside of the hub, and b. a stationary inner ring fixed to the body of machine with coils around its circumference in which is generated the output power.
  2. 2. A device according to claim I for generating electricity from water currents.
  3. 3. A device according to claim 2 in which the water-driven rotor is directly attached to the outer rotor of the generator, and the inner stator is fixed to the body of the machine.
  4. 4. A device according to claim 2 in which the water-driven rotor is supported separately from the generator, and torque is transmitted from the water-driven rotor to the generator rotor.
  5. 5. A device according to claims 3 or 4 in which the blades are attached to the rotor at a *.::: permanently fixed pitch setting about their radial axis relative to the rotor.
  6. 6. A device according to claims 3 or 4 in which the blades can be pitched about their radial * *.
    :.: * axes to change their angle of attack to the flow.
    :
  7. 7. A device according to claims, 3 or 4 in which part of the water flow is allowed to pass *: * through the bearings and the gap between the generator rotor and stator.
    *:*.
  8. 8. A device according to claim 7 in which water-lubricated plain bearings are used.
  9. 9. A device according to claim I for generating electncity from wind.
  10. 10. A device according to claim 9 in which the wind-driven rotor is directly attached to the outer rotor of the generator, and the inner stator is fixed to the body of the machine.
  11. II. A device according to claim 9 in which the wind-driven rotor is supported separately from the generator, and torque is transmitted from the wind-driven rotor to the generator rotor.
  12. 12. A device according to claims 10 or 11 in which the blades are attached to the rotor at permanently fixed pitch setting about their radial axes relative to the rotor.
  13. 13. A device according to claims 10 or 11 in which the blades can be pitched about their radial axes to change their angle of attack to the flow.
GB0709699A 2007-05-21 2007-05-21 Fluid driven generator Withdrawn GB2449436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0709699A GB2449436A (en) 2007-05-21 2007-05-21 Fluid driven generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0709699A GB2449436A (en) 2007-05-21 2007-05-21 Fluid driven generator

Publications (2)

Publication Number Publication Date
GB0709699D0 GB0709699D0 (en) 2007-06-27
GB2449436A true GB2449436A (en) 2008-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB0709699A Withdrawn GB2449436A (en) 2007-05-21 2007-05-21 Fluid driven generator

Country Status (1)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017537A1 (en) * 2008-04-03 2009-10-08 Voith Patent Gmbh Tubular turbine generator unit
WO2010049670A3 (en) * 2008-10-31 2011-07-28 Swanturbines Limited Marine turbine
CN103104417A (en) * 2013-01-19 2013-05-15 哈尔滨工程大学 Speed-adjustable hub device of large wind turbine generator system
DE102014204593A1 (en) 2014-03-12 2015-04-23 Voith Patent Gmbh Horizontal rotor turbine
GB2524667A (en) * 2012-05-14 2015-09-30 Sustainable Marine Energy Ltd A flowing-water driveable turbine assembly
US9771922B2 (en) 2011-05-13 2017-09-26 Sustainable Marine Energy Limited Flowing-water driveable turbine assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050525A (en) * 1979-03-13 1981-01-07 Plot Ltd C A Generator
DE3629872A1 (en) * 1986-09-02 1988-03-10 Licentia Gmbh Wind-power installation for generating electrical energy
GB2225813A (en) * 1988-12-06 1990-06-13 Michel Laine Hydraulic turbine driving a generator
GB2288642A (en) * 1994-04-19 1995-10-25 David Johnston Burns Air driven generator
US6249058B1 (en) * 1999-12-03 2001-06-19 Monte L. Rea Wind driven generator having counter-rotating armature and rotor
JP2005023894A (en) * 2003-06-30 2005-01-27 Systec:Kk Coaxially integrated wind-turbine generator
WO2006028377A1 (en) * 2004-08-25 2006-03-16 Norpropeller As Electric generator and turbine generator assembly
EP1741926A2 (en) * 2005-07-05 2007-01-10 Gencor Industries Inc. Water Current Generator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050525A (en) * 1979-03-13 1981-01-07 Plot Ltd C A Generator
DE3629872A1 (en) * 1986-09-02 1988-03-10 Licentia Gmbh Wind-power installation for generating electrical energy
GB2225813A (en) * 1988-12-06 1990-06-13 Michel Laine Hydraulic turbine driving a generator
GB2288642A (en) * 1994-04-19 1995-10-25 David Johnston Burns Air driven generator
US6249058B1 (en) * 1999-12-03 2001-06-19 Monte L. Rea Wind driven generator having counter-rotating armature and rotor
JP2005023894A (en) * 2003-06-30 2005-01-27 Systec:Kk Coaxially integrated wind-turbine generator
WO2006028377A1 (en) * 2004-08-25 2006-03-16 Norpropeller As Electric generator and turbine generator assembly
EP1741926A2 (en) * 2005-07-05 2007-01-10 Gencor Industries Inc. Water Current Generator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017537A1 (en) * 2008-04-03 2009-10-08 Voith Patent Gmbh Tubular turbine generator unit
US8536719B2 (en) 2008-04-03 2013-09-17 Voith Patent Gmbh Tubular turbine generator unit
WO2010049670A3 (en) * 2008-10-31 2011-07-28 Swanturbines Limited Marine turbine
US9771922B2 (en) 2011-05-13 2017-09-26 Sustainable Marine Energy Limited Flowing-water driveable turbine assembly
GB2524667A (en) * 2012-05-14 2015-09-30 Sustainable Marine Energy Ltd A flowing-water driveable turbine assembly
CN103104417A (en) * 2013-01-19 2013-05-15 哈尔滨工程大学 Speed-adjustable hub device of large wind turbine generator system
CN103104417B (en) * 2013-01-19 2015-05-20 哈尔滨工程大学 Speed-adjustable hub device of large wind turbine generator system
DE102014204593A1 (en) 2014-03-12 2015-04-23 Voith Patent Gmbh Horizontal rotor turbine

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