Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03D—WIND MOTORS
  • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
  • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • 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
  • 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
  • Y02E10/72—Wind turbines with rotation axis in wind direction
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/70—Wind energy
  • Y02E10/728—Onshore wind turbines

Definitions

• the invention concerns a wind turbine consisting of in one direction rotating turbine rotors connected at the blade tips, and in the opposite direction an intermediated rotating turbine rotor or turbine rotors.
• a counter rotating electrical generator is located in the turbine rotors.
• the electrical generator has, compared with conventional electrical devices, the double amount of slits in the air gaps between magnet- and inductor rotors.
• Repelling magnetic fields are arranged between the turbine rotors and next to the electrical generators counter rotating magnet- and inductor rotors to minimize the distance between the counter rotating turbine blades and the magnet- and inductor rotors.
• the turbine rotors are rotationally attached between two in a row oblong towers of streamlined shape, turnably arranged on a stationary sub tower, building or other bedding. The towers are always positioned in the direction of the wind.
• the present innovation is to accomplish wind turbine plants that can satisfyingly function during as good as all wind-conditions, as well full gale as breeze, unlike wind turbines with few blades, and with no surcharge compared to the current technology.
• the problem is solved by among other things allocating the absorption of the wind's effect to several turbine rotors or steps, and designing the towers to be turnable in such a way that they are always placing themselves in the direction of the wind and withstand much higher bending moments. This is achieved by placing the wind turbine between two oblong, streamlined towers interconnected at the top by bearings for the turbine rotors and at the bottom by a bottom plate turnably attached to a fixed bedding, like bedrock, the upper part of a building, or a stationary tower.
• the wind turbine can begin to operate at lower wind-speeds, as the total wing surface against the wind is greater than that of for example a wind turbine with two blades which often has a 8 to 10 times higher wing periphery speed in relation to the wind-speed.
• the electrical energy transmission and other cables can be arranged through for example tubular inner centre axles and slip rings.
• repelling magnetic fields active in the air gaps between the turbine rotors can be accomplished by permanent- or electric magnets, or combinations of the two, or by a co-operation with the induced magnetic fields arising from the interaction between the magnets' magnetic fields and induced fields from induction coils or closed circuits integratedly arranged within the turbine rotors.
• the repelling fields can also be arranged trough interaction between inducing and induced coil circuits, non-closed and closed, power feeded and power generating, according to the principle that when a coil constituting its own electrical circuit is moved across a magnetic field, an electrical current arise in the coil, which in turn build up its own magnetic field, which repel the magnets from the coil.
• the magnets can also be arranged along the rotor circuit according to Halbach's principle, so that the magnetic fields are weakened on the one side and strengthened on the other side, which is turned toward the air gap.
• a mechanical separator for the turbine rotors can also be inserted between the turbine rotors.
• An example of such are wing-profile shaped plates (61-63) with oblong, flat side areas turned towards adjacent counter rotating plates of similar form, at which point these also in shape are adapted to each other, to maximize the air-accumulation between the counter rotating plates.
• These turbine rotor separators can be arranged integrated with magnetically repelling turbine rotor separators. When air flow between two plates, the air's speed between the plates cause the static pressure there to be lesser than the outer pressure, wherefore a certain power is needed to further keep the plates apart. This effect reduces the risk for vibratory movements between the turbine rotors.
• the counter rotating wind turbine rotors and electrical generators also permit an easy arranging of the double amount of slits in the air gaps between magnet- and inductor rotors compared to conventional constructions of electrical machines.
• the electrical generator's magnetic rotors and inductor rotors can be arranged either radially or axially in relation to each other.
• the air gap between the counter rotating magnets and inductors in the generator usually has to be widened during a radial moving out alongside the wind turbine rotors, this inconvenience can be solved by arranging repelling magnetic fields between or next to the counter rotating generator components.
• the air gap can thus be minimized, at which the space between the turbine rotors can also be minimizes, at least in the adjacent area.
• the generators can be optionally arranged to generate alternating- or direct current, and as an alternative or in combination the outlet of energy can be done via centre axles connected to the turbine rotors.
• the repelling magnetic fields inserted between the turbine rotors and the integrated generator components, entail that the turbine rotors in a natural fashion can be divided into at least three ring formed circle-areas, here named turbine rings, radially placed inside and outside the inserted repelling magnetic field devices and the generator components.
• the turbine blades can be attached turnable to be fitted to different wind- conditions by control elements, or as an alternative be attached fixed, or in a combination of these executions.
• the turbine rings radially located differently, thus enable various angles of rotation for these.
• the electrical generator can be arranged to only two of the counter rotating turbine rotors as the outer rotors are connected at the blade-tips.
• Fig. 1 shows a vertical cross section of a smaller plant through the wind turbine's main axle, and with alternate transmissions of energy marked.
• Fig. 2 shows a sketch of a device of repelling magnets between the turbine rotors in the example of execution.
• Fig. 3 shows a rotational axle system at a smaller plant with three turbine rotors.
• Fig. 4 shows an outline of an alternately positioning of the counter rotating electrical generator, radially arranged with an air gap.
• Fig. 5 shows an outline of the positioning of the counter rotating electrical generator, radially arranged with 2 air gaps.
• Fig. 6 and 7 shows a mechanical turbine rotor separator integrated with a magnetically repelling turbine rotor separator, with arrows showing the relative wind direction, incident in relation to the blade speed.
• Fig. 8 shows a rotational axle system at a smaller plant with three turbine rotors with the outlet of energy through two internal axles.
• Two oblong, streamlined towers (1, 2) standing on a platform (3) arranged rotatable on a stationary bedding shaped as a tower (4).
• a wind turbine (5) constituting of two in the one direction rotating turbine rotors (6, 7) and an intermediate turbine rotor (8) rotating in the other direction.
• the outer turbine rotors (6, 7) are interconnected at the blade tips by an outer ring (9).
• the three turbine rotors are each sectioned into three turbine rings (11-19) radially arranged outside each other. Some turbine blades within the turbine rotors are arranged turnably adjustable in different angles.
• An electrical generator (10) is arranged between the three turbine rotors' inner turbine rings (11-16), at which, in this example of execution, the magnet- and inductor rotators are arranged in axial directions.
• the electrical generator's magnetic rotor (21) is attached to the inner turbine rotor (8) and the two inductor rotors (20, 22) are attached to the outer turbine rotors (6, 7). Through this 2 air gaps are obtained between the magnet- and inductor rotors.
• execution repelling magnets (44-50) are, radially calculated from the inside, placed between the second (14-16) and third turbine ring (17-19); u-shaped magnets (44) at the outer turbine rotors (6, 7) with the two poles (45, 46) directed against the centre rotor (8), oblong, staff-formed magnets (47, 48) in two lines at the inner rotor in such a way that the poles (49, 50) are opposite and repelling the outer rotor's magnet poles.
• repelling magnets (51, 52, 53) are arranged at the generator's magnet- and inductor rotors (20, 21, 22), at which also the adjacent portions of the turbine rings are held at a suitable distance from each other.
• the outer turbine rotors (5, 7) are attached to outer axles (25, 27) rotatably attached to an inner pipe-formed rotatable axle (43).
• the inner turbine rotor (6) is attached to an intermediate pipe-formed axle (26) and stationary attached to the pipe-formed axle (43), which is rotatably attached to outer bearing units (38, 39) at the two towers' upper parts (33, 34).
• the transmission of energy can be mechanically torque- transferring through the axle (43) and through one of the two rotatable outer axles (25, 27) and interconnected with outer transmissions (56) to electrical generators (57) but also electrical and optical through cables arranged through the axle (43) and outside the outer axles (25, 27) to outer, fixed positions through slip rings or other transmission devices.
• the electrical transmission from the components of the electrical generator and the repelling magnets to an external electrical system can be arranged alternatively through two inner pipes (42, 43) within the pipe-formed rotor axles (25, 26, 27). These inner pipes can also serve as mechanical transmitters of energy from the turbine rotors and be linked with external transmissions (56) to external, stationary electrical generators (57) and also be channels for control-, regulating- and transmission of energy cables for the energy generator system and the repelling magnetic fields.

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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)
• Power Engineering (AREA)
• Wind Motors (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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Cited By (2)

Citations (4)

• 2007
  • 2007-07-13 SE SE0701710A patent/SE531533C2/sv not_active IP Right Cessation
• 2008
  • 2008-07-14 WO PCT/SE2008/000451 patent/WO2009011637A1/en active Application Filing

Patent Citations (4)

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