CN103732915A - Non-rotating wind energy generator - Google Patents
Non-rotating wind energy generator Download PDFInfo
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- CN103732915A CN103732915A CN201280023380.XA CN201280023380A CN103732915A CN 103732915 A CN103732915 A CN 103732915A CN 201280023380 A CN201280023380 A CN 201280023380A CN 103732915 A CN103732915 A CN 103732915A
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- 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
- F03D5/00—Other wind motors
- F03D5/06—Other wind motors the wind-engaging parts swinging to-and-fro and not rotating
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- 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
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
- F05B2220/707—Application in combination with an electrical generator of the linear type
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- 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
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Abstract
In an embodiment of the invention, a non-rotating wind energy generator uses the fluid flow principle of vortex shedding and self-excited oscillations to generate oscillatory, linear motion of a beam, and linear magnetic inductors, optionally located near both ends of the beam, generate electrical power when the beam is in motion.
Description
related application
The application requires to submit on April 15th, 2011 according to 35U.S.C. § 119 (e) and the preference of No. 61/476103rd, the U.S. Provisional Patent Application of called after " Non-Rotating Wind Energy Generator ", and the application's case is to be all incorporated herein by reference.
Technical field
The present invention relates to wind-power electricity generation.
background of invention
Device such as wind turbine is current satisfied with the more and more higher requirement of sustainable environmental protection wind-power electricity generation.Although wind turbine is the method that wind-power electricity generation the most often uses, it also has multiple inherent defects.These install expensive, are difficult to build, installation and maintenance, and highly-visible, noisy, volume greatly, easily destroy and be relatively difficult to transportation and assembling.Its high height is easily destroyed it by the aircraft of flying debris, bird and even low-latitude flying.US military is also worried, and claims wind turbine to be placed in the sight line of radar system and may negative effect army to detect the ability threatening.Rotary wind-force turbo machine is not suitable for the military's application that requires to carry out in outlying district quiet and generating inconspicuous yet.In addition, face to face during the wind speed of Lingao, must application machine break, thus produce loss and efficiency low.Therefore, need can be quiet and mode inconspicuous produce the portable non-rotating device of useful a large amount of electric power.
The system that can be produced by eddying current is used the principle of Vortex Shedding to utilize wave energy in water.Company has developed the device that is called the aquatic clean energy resource of vortex-induced vibration (VIVACE).This product is used Vortex Shedding as being flowed and produced the major way of mechanical motion by fluid.Described system is designed to carry out underwater operation in ocean current.This system is used and dynamically change the electricity change spring constant system of natural frequency to allow to be optimized under different in flow rate.The wind-power electricity generation of this system is because the gap between the fluid mobility matter of air does not greatly conform to people's will.Airborne Vortex Shedding frequency is far faster than the shedding frequence in water.Therefore, make the natural frequency coupling shedding frequence of system will produce great spring constant.Mobile this big or small spring needs a large amount of power.Unfortunately, the lift feature of this application does not provide is enough to overcome the lift of this spring constant and will can not vibrate.
Therefore, need can be quiet and mode inconspicuous produce the portable non-rotating device of a large amount of useful electric power.
general introduction
Aspect of the present invention relates to a kind of novel method that utilizes wind-force.In embodiments of the invention, device is used Vortex Shedding and self-oscillatory fluid flow principals so that crossbeam produces vibration, linear motion.In embodiments of the invention, when crossbeam moves, be positioned at alternatively near the linear magnetic inductor in crossbeam two ends and produce electric power.
In aspect of the present invention, a kind of non-rotating wind power plant comprises: the bluff body of suspension, and it can operate in response to wind energy, to use Vortex Shedding to start and maintain oscillatory movement; With inductor system, it can operate with the motion produce power via the bluff body hanging.In one or more embodiments, the bluff body of suspension can comprise framework, and it supports at least one crossbeam movably; One or more the first springs; One or more the second springs, wherein said one or more the first spring is attached to the first portion of framework the first portion of crossbeam and described one or more the second spring the second portion of framework is attached to the second portion of crossbeam, crossbeam is suspended between the first portion and second portion of framework, and wherein inductor system comprises at least one inductor, it is attached to one of Part III of crossbeam or framework; At least one magnet, it is attached to one of the Part III of framework or crossbeam, and the motion that its middle cross beam carries out when being exposed to wind causes the first inductor through at least one magnet.In any one in previous embodiments, crossbeam can be D shape.In any one in previous embodiments, crossbeam can be hollow.Any one in previous embodiments can also comprise one or more guide rails.Any one in previous embodiments can also comprise one or more extra crossbeams; One or more extra upper springs; One or more extra lower springs, the Part IV that wherein said one or more upper spring is attached to the Part III of crossbeam and described one or more extra lower spring the second portion of extra crossbeam is attached to crossbeam by the first portion of extra crossbeam, is suspended between the first portion and second portion of framework described one or more extra crossbeam.In any one in previous embodiments, the first portion of framework can be top, and the first portion of crossbeam can be top, and the second portion of framework can be bottom, and the second portion of crossbeam can be bottom.In any one in previous embodiments, the Part III of framework can be sidepiece.In any one in previous embodiments, crossbeam can approximate horizontal hang.In any one in previous embodiments, crossbeam motion can be substantially vertical.In any one in previous embodiments, the surface of crossbeam can be uniform and smooth.In any one in previous embodiments, the surface of crossbeam can be that part is smooth.In any one in previous embodiments, the surface of crossbeam can be even roughness.In any one in previous embodiments, the surface of crossbeam can be that part is coarse.In any one in previous embodiments, described at least one inductor or described at least one magnet can be attached to the first end of crossbeam.In any one in previous embodiments, can select spring-mass to promote self oscillations campaign.In any one in previous embodiments, crossbeam can have the freely cross-sectional geometry of the group of following composition of choosing: square, cylindrical, reverse D shape crossbeam (its apoplexy is mainly imported at the circular portion of crossbeam but not flat) and in " being greater than " or " being less than " with respect to the equilateral wedge importing in the direction of wind.In any one in previous embodiments, spring can be drawn into state of rest.In any one in previous embodiments, can select crossbeam quality to promote self oscillations campaign.In another aspect of this invention, by according to the non-rotating wind power plant described in any one in previous embodiments, be exposed to wind with the motion of using Vortex Shedding to produce oscillatory movement in response to wind energy and should carry out via non-rotating wind power plant use sense produce power.
The object of the invention is the non-rotating replacement scheme for a kind of wind turbine is provided, it produces considerable electric power and is easy to carry, is easy to transportation and be not easy to and destroys.In certain embodiments, described device is significantly less than house or larger wind turbines.In certain embodiments, outlying district can easily be dismantled, loads and be transported to described device, such as campsite or military base, front.In certain embodiments, described device operation allows to be difficult to discover and almost noiseless action.
accompanying drawing summary
Following description as the preferred embodiment illustrating in accompanying drawing according to the present invention will be understood above of the present invention and other objects, features and advantages.
Fig. 1 shows the signal explanation of the Vortex Shedding of the formation of vortex and subsequent motion.
The chart of the reynolds' number that Fig. 2 shows the relation between cylindrical Si Tuolahe number and reynolds' number to Si Tuolahe number.
Fig. 3 is the signal explanation of the non-rotating wind-driven generator according to an aspect of the present invention and as shown in side view (3A) and front view (3B).
Fig. 4 A and Fig. 4 B provide according to the perspective view of the non-rotating wind-driven generator of embodiment of the present invention.
Fig. 5 is the perspective explanation according to the crossbeam of one or more embodiments.
Fig. 6 is the drafting figure to the time (second) of the lift coefficient of a series of crossbeams with each four varying cross-section shapes for same characteristic features length.
Fig. 7 is the drafting figure to the time (second) of the lift coefficient of a series of D shape crossbeams with the characteristic length of 0.001m, 0.025m, 0.05m, 0.075m and 0.1m.
Fig. 8 is how the drafting figure of lift (N) on the time (second) and the size that shows crossbeam (being D shape crossbeam) here affect the lift being produced by Vortex Shedding.
Fig. 9 shows the inductor assembly according to embodiment of the present invention.
Figure 10 is according to the explanation of the installation system of the non-rotating wind-driven generator of one or more embodiments.
Figure 11 show according to one or more embodiments for crossbeam being installed to the installation system on framework.
Figure 12 is the perspective accompanying drawing of crossbeam according to one or more embodiments of the present invention.
Figure 13 is according to the voltage trace of the non-rotating wind-driven generator of one or more embodiments.
describe in detail
Aspect of the present invention relates to a kind of novel method that utilizes wind-power electricity generation.On the one hand, provide the device being generated electricity by the mobile irrotational motion causing of wind.Wind flows as feature take unstable conventionally; Therefore described device can carry out the operation of unstable mobile feature.For maximum system efficiency, minimize the loss producing due to frictional force and resistance and optimize utilization of power method.Described device is easy to transportation and disposes.Use the nominal wind speed of about 6m/s as the basis of prototype and test.But full scale system can operate in wind speed on a large scale.
By first setting up irrotational motion and then provide non-rotating wind-power electricity generation with described motion with generating by the mobile of wind.On the one hand, device is not used and is similar to rotatablely moving of currently marketed wind turbine, and described device is used Vortex Shedding and self-oscillatory fluid flow principals so that crossbeam produces vibration, linear motion on the contrary.
The phenomenon of Vortex Shedding relates to when bluff body is placed in and when fluid flows, is formed at the formation that replaces vortex after bluff body.Vibration is closed lift and is acted on bluff body along with these Vortex Sheddings.When flowing through bluff body, causes fluid Vortex Shedding.Fluid flows through that bluff body can produce alternately low-pressure bubble on the downstream side of bluff body and bluff body will trend towards moving towards low pressure area.Finally, if the resonant frequency of the frequency match structure of Vortex Shedding, so described structure becomes self―sustaining by the movement that starts resonance and described structure.
The density of these vortexs and the lift causing are directly related with shape of cross section and the size of bluff body.The formation of vortex and subsequent motion has been shown in Fig. 1.Will there is the frequency of these vortexs in the dimensionless constant prediction that can be called Si Tuolahe number (St) (with reference to equation 1 below) by use:
In this equation, f is Vortex Shedding frequency, and L is characteristic length (below equation 2 of reference), and v is the mobile speed of fluid before fluid contact bluff body.
When the fluid within the scope of main body is placed in certain of reynolds' number flows, under the frequency that can be predicted by Si Tuolahe number, there are a series of vortexs.Equation 3 according to fluid contact main body before speed (closing speed) V, characteristic length L, the density p of fluid and the speed μ of the fluid definition reynolds' number of fluid.
In Fig. 2, demonstrate the tolerance interval of the reynolds' number of measurable Vortex Shedding.It in Fig. 2, is cylindrical curve.The report value of the Si Tuolahe number of D shape crossbeam is the Applied Fluid Dynamics Handbook that 0.21(for example, was delivered in 1984 by Robert D.Blevins, Van Nostrand Reinhold Company with reference to ()) and be independent of reynolds' number.Fig. 2 has described the upright horizontal line of the Si Tuolahe number that represents D shape crossbeam.From equation (1) above, f=StV/L, therefore, for the constant St of D shape crossbeam, oscillation frequency increases with wind speed and increases and reduce with L.For the mean wind velocity providing, can adjust crossbeam for desirable frequency.For other shape, Si Tuolahe value can be different, but can use similar approach to adjust bluff body for desirable frequency.Must exist a certain group of flox condition there is to depart from frequency.The each vortex (being called Feng's Karman vortex street) producing in this serial vortex carries alternately height nip.Bluff body is drawn to low pressure area, thereby produce vibration, makes a concerted effort.In embodiments of the invention, use this power so that generator system setting in motion.
In one or more embodiments, select beam design so that self-excited vibration to be provided when it is exposed to wind.Self-excited vibration is that the motion of wherein system causes system to continue with its natural frequency vibration and amplitude the phenomenon increasing.In one or more embodiments of the present invention, Vortex Shedding will make crossbeam start self-excited vibration.In one or more embodiments, crossbeam continues the natural frequency vibration with system when being exposed to wind mobile at it.In one or more embodiments, system is used spring control amplitude of oscillation.In other more embodiments, system is used stopper with restriction amplitude of oscillation.
Fig. 3 is the signal explanation of non-rotating wind-driven generator 300 according to an aspect of the present invention.On the one hand, crossbeam 303 be slidably mounted in framework 305 so that crossbeam because Vortex Shedding carries out oscillatory movement, described oscillatory movement is approximately perpendicular to wind direction 302 or has substantially vertical component.Crossbeam is equipped with at least one pair of spring 304 that is positioned at crossbeam upper and lower to provide restoring force to the crossbeam of experience Vortex Shedding.This makes crossbeam when contact wind, carry out oscillatory movement.Spring can be used and be fixed to framework conventional methods such as breech lock, hook, welding, connection.Due to spring or other bonding apparatus experience high pressure, fixation method is expected to provide the high strength of materials and low fatigue life.In order to maintain constant spring speed, coil diameter and/or coil quantity must increase with diameter of wire.Linear magnetic inductor 301 is shown and is positioned near crossbeam two ends; But it can also any quantity be positioned at other place.When crossbeam moves, linear magnetic inductor produces electric power.Can provide damped system 307 further to control amplitude of oscillation.
Non-rotating wind generating unit is used the interaction of crossbeam and wind to cause Vortex Shedding and linear motion, and then Vortex Shedding and linear motion are used electromagnetic inductor to convert electric power to.In one or more embodiments, inductor also has the magnet concentric with lead loop.Other embodiment can be used multipair parallel fixed magnets and square coil, and it is fixed to the crossbeam of advancing between magnet during operation.Use parallel magnets/coil configuration to confirm to be by experiment better than the concentric magnet/coil configuration at least one embodiment.This configuration allows the larger space of existence between magnet and coil.This contributes to prevent by friction, to cause damping between crossbeam moving period.Use parallel fixed magnets to increase the magnetic intensity in linear inductor.Magnetic intensity is the origin cause of formation that magnetic inductor produces electric power.
Fig. 4 A and Fig. 4 B have described the non-rotating wind-driven generator according to embodiment of the present invention.In this embodiment, there is magnet 401, inductor assembly 402, crossbeam 403, spring 404, framework 405, guide rail 406 and adjustable L bracket 408.In this embodiment, crossbeam 403 and framework 405 are each all has by J-shaped hook 407 four points of connection that form.Frame height is adjusted by top component being moved up and down to pre-drilled position.Framework is by timber, metal, plastics or to crossbeam, provides any other material of enough supports to build in the duration of oscillation.For example, framework should not be out of shape or warpage under steering force.In this embodiment, four springs 404 are attached to framework 405 via J-shaped hook 407 by crossbeam 403.In this embodiment, between crossbeam 403 and adjustable L bracket 408 and between crossbeam 403 and barge board 406, there is void space.Barge board reduce wind-force in guide rail against the lateral pressure of crossbeam and make crossbeam keep vibration the size that reduces friction in correct direction simultaneously.
In embodiments of the invention, use wind energy to hang crossbeam 403 self oscillationss and Vortex Shedding to cause.The fluid flow phenomena of Vortex Shedding is the oscillatory movement for starting and maintain one or more crossbeams 403.This to-and-fro motion is to generate electricity for the magnetic induction via using magnet 401 and inductor assembly 402 to cause.In Fig. 9, be described in more detail the embodiment of inductor assembly.In certain embodiments of the invention, magnet be fix and lead loop with respect to magnet, move.In other embodiments of the present invention, lead loop be fix and magnet with respect to lead loop, move.In other embodiments of the present invention, magnet and coil all can move.
When the natural frequency of Vortex Shedding frequency match system, the motion of very big amplitude will be realized.In embodiments of the invention, spring system control maintain oscillation behavior.Spring can have identical springs tension force so that crossbeam keeps hanging.In embodiments of the invention, can change quantity, size and the hardness of spring.Vibration movement is caused by Vortex Shedding.Be called self-oscillatory phenomenon and can also be responsible for the continuous motion in embodiment of the present invention.In embodiments of the invention, at Vortex Shedding, cause after little displacement input, the motion of system itself causes system with its natural frequency, to vibrate when wind flow.In certain embodiments of the invention, the constant of spring 404 from 0.1lbs/in to the scope of 3lbs/in.
In embodiments of the invention, can be parallel to first crossbeam and second cross beam (or more crossbeams) is installed to become the system of two (or more) degrees of freedom.
Fig. 5 shows the crossbeam 501 according to embodiment of the present invention.In this embodiment, on the inner side of crossbeam, be hollow and be D shape, and inductor assembly 502 is attached to every end of crossbeam 501.In embodiments of the invention, D shape crossbeam has the length (not comprising inductor assembly) of 24 inches, the diameter of 2 inches, the wall thickness of 1/8 inch and the weight of 0.5 pound.In embodiments of the invention, the equivalent spring of can arranging in pairs or groups 0.5lb crossbeam to use hardness be 0.5lbs/in.
In other embodiments, can use other beam shape.For example, crossbeam can be square, cylindrical, reverse D shape crossbeam (its apoplexy is mainly imported on the flat of crossbeam and on non-circular portion) and in " being greater than " or " being less than " with respect to the equilateral wedge importing in the direction of wind.In addition, in embodiments of the invention, the surface of crossbeam can be smooth, and in other embodiments of the present invention, can be evenly or be coarse at select location place in surface.In embodiments of the invention, crossbeam can coordinate weight to carry out quality optimization to adjust frequency and amplitude.
One or more crossbeams can be used in non-rotating wind energy plant.In certain embodiments, described multiple crossbeams can comprise the rigid spacers between crossbeam, and described multiple transverse beam system can be fixed to framework by the spring that is attached to upper beam and underbeam.In other embodiments, described multiple crossbeam can be bonded with each other and bonded to frame by spring.
Each crossbeam can be used multiple usual manner to be fixed to the side of framework.For example, crossbeam can end at the every side in the ring 1100 with central tube 1101, and bar 1102 can install crossbeam to be fixed to framework 1103 by central tube.Central tube can coordinate linear or ball bearing to reduce resistance.Exemplary installation system has been shown in Figure 11.In this embodiment, four pre-stretching springs 1106 are attached to top and the bottom of assembly.This pre-stretching can be adjusted by the back timber of rising framework.
In other embodiments, use wherein system to answer free-running damping type system.If there is high wind, barge board will make the crossbeam size that simultaneously reduces friction of vibrating in correct direction so.Fig. 4 A and Fig. 4 B show vertical orientation and are placed near the barge board of the framework side before and after equipment; But it can any quantity be positioned at other place.
Another embodiment of crossbeam has been shown in Figure 12.Crossbeam 1200 can be emptied with minimum mass itself.At arbitrary end, there are two hydrostatic columns 1210.Can add weight to adjust the quality of crossbeam for some application to container, or coil 1230 can manufacturedly slide in container to hold induction system.The snap-on covers 1220 that covers hydrostatic column is also the function services as vibration damper.Can in the top of each lid, hole 1240, the diameter in each hole is greater than laid porose guide rail above.
Fig. 6 is the drafting figure with the lift coefficient v time of difform crossbeam.For the ability comparing is provided, the feature height of each crossbeam is held constant at 0.1m.Relatively there is the crossbeam of columniform shape of cross section, D shape crossbeam, " being greater than " wedge and " being less than " wedge.D shape crossbeam has shown stable and maintained the lift of large amplitude compared with other modelling transverse beam system.
Can change the length of crossbeam to provide amplitude of oscillation and frequency for any desirable application.The each characteristic length that provides the crossbeam of beam shape and material provides the lift coefficient of same magnitude conventionally.But along with characteristic length reduces (all things all equate), vortex frequency increases.This is illustrated in Fig. 7, and wherein modelling has the character of the D shape crossbeam of different characteristic length.In Fig. 7, draw the lift coefficient of a series of D shape crossbeams of the characteristic length with 0.001m, 0.025mm, 0.05m, 0.075m and 0.1m to the time (second).Although amplitude is similar, frequency changes along with crossbeam length change.Although observed this relation between frequency and crossbeam length, elastic force also will play significant role aspect oscillation frequency.In one or more embodiments, amplitude depends on working spring length, incipient extension, spring constant and wind speed.Can use the continuous a series of springs that change of spring constant and spring length so that desirable spring constant to be provided.
Fig. 8 is how the drafting figure of lift (N) on the time (second) the size that shows crossbeam (being D shape crossbeam) here affect the lift being produced by Vortex Shedding.Along with size increases, frequency reduces and lift increases.The selection with the crossbeam of length, shape and diameter provides the non-rotating wind-driven generator with selected (height) frequency and amplitude.In a preferred embodiment of the invention, crossbeam is D shape.Crossbeam frequency and the lift of exemplary D shape crossbeam are provided in form 1.
Form 1.
In one or more embodiments, select beam design so that self-excited vibration to be provided when crossbeam is exposed to wind.Self-excited vibration is that the motion of wherein system causes system to continue with its natural frequency vibration and amplitude the phenomenon increasing.The in the situation that of this design, D shape crossbeam vibrates with system frequency continuing when being exposed to wind mobile.For the autonomous system with natural frequency vibration is provided, can be by using compared with low quality and the needed power of spring rate reduction moving beam.
Provide linear magnetic inductive to produce available a large amount of electric power.Faraday's law assigned voltage equals the rate of change of magnetic flux.In equation 6 and equation 7, show respectively Faraday's law and magnetic flux.Permanent magnet forms magnetic field and moves through described field via wire loop catches energy.
ε is induced voltage,
be magnetic flux, B is magnetic intensity, and A is the cross sectional area in loop, and θ is magnetic field and the vectorial angulation perpendicular to the area in loop.
Some current design relates to makes magnet move through fixed coil, and other design relates to the movement of coil above fixed magnets.Should be specifically noted that, the variation of magnetic flux defines the voltage producing.All rotary generators are all used magnetic induction to produce voltage to make it pass magnetic field by spin lead loop.Due to θ change continuously the magnetic flux gradually changing causing and produce constant voltage.
Fig. 9 shows the inductor assembly 901 according to embodiment of the present invention.In this embodiment, inductor assembly 901 comprises that bobbin 902, the wire 903 that is wound around bobbin 902 and bobbin 902 and wire 903 are coupled to the end cap 904 of crossbeam wherein.In one or more embodiments, moving beam comprises the bobbin of wire, and lead loop is crossed fixed magnets.In other embodiments, the moving beam of support frame fixing cord coil and supporting permanent magnet or electromagnet is crossed fixing cord coil.
In embodiments of the invention, can change the number of turn, wire gauge and other character of inductor assembly.In embodiments of the invention, can use specification is 32 wire.
In embodiments of the invention, use parallel magnets inductor to produce electric power by reciprocal crossbeam motion.This inductor can overcome the kinetic damping problem that can occur in the embodiment with concentric magnet and coil configuration.
Figure 10 shows according to the cross-sectional view of the non-rotating wind-driven generator of embodiment of the present invention.As known in Figure 10, in this embodiment, magnet 1001 is attached to guide rail 1004 via adjustable L bracket 605.In this embodiment, between crossbeam 1003 and guide rail 1004 and between crossbeam 1003 and adjustable L bracket 1005, there is space.In embodiments of the invention, can put upside down the position of magnet 1001 and the position of inductor 1002.In embodiments of the invention, can use 8020 aluminium chassis materials to produce framework.Can on the both sides of assembly, use adjustable slide plate to lead wall with fixed magnets and aluminium.
In embodiments of the invention, system can produce the electric power of about 30VAC and 2.7W.
As shown in Figure 4 B, build prototype.Use can produce the large scale industry fan of the mean wind velocity of 4m/s and set up prototype.D shape crossbeam has the length (not comprising inductor assembly) of 24 inches, the weight of the diameter of 2 inches, the wall thickness of 1/8 inch and .5 pound.Test three groups of springs to obtain wherein system by the general range of the spring constant of self-excitation.The scope of spring constant be from 0.1lbs/in to 3lbs/in.Using the spring hardness of this probable ranges, there is self-excited vibration (for example, 0.5lb crossbeam self-excitation under the equivalent hardness of 0.5lbs/in) to hold horizontal depth of beam and to cause in identification equivalent spring.Produce framework with 8020 aluminium chassis materials.To have the prototype of equivalent spring constant 3.24lbs/in in inductor take specification as 32 wire test, this produces the total voltage of 22V.The voltage trace of assembly has been shown in Figure 13.Specification is that 32 wire is only rated at 0.09Amp by the maximum value of electric current before melting.Therefore, peak output is limited to the current limit of wire.Under the maximum allowed current of 0.09amp, use following equation rated output output: P=IV=.09A*22V=1.98W.
In embodiments of the invention, compared with current wind-driven generator, the obviously compacter and transportation of being more convenient for of described device.Its compact design makes embodiment seldom be subject to inherently the impact of the air-supported threat (bird, flying debris etc.) of the spin blade that can destroy easily wind turbine generator.In embodiments of the invention, the unique design of motor makes it can more be useful on multiple application.Its design portable and that be easy to fold makes its mobile charging that is practically applicable to Electric actuator (Consumer and military's object).Its compactness and short slab shape make it in theory for example, for being wherein not suitable for the more large-scale application (, wind farm, settlement, urban/suburban) of visually obvious wind turbine.In addition, in embodiments of the invention, the movable part of embodiment is to be included in the main body of system, and causes safety hazard to be less than can be unfavorable for human and animal's large-scale rotation blade.May applying of embodiment of the present invention is unrestricted in essence.
Claims (20)
1. a non-rotating wind power plant, it comprises:
The bluff body hanging, it can operate in response to wind energy, to use Vortex Shedding to start and maintain oscillatory movement; With
Inductor system, it can operate the motion produce power with the bluff body via described suspension.
2. non-rotating wind power plant according to claim 1, the bluff body of wherein said suspension comprises:
Framework, it supports at least one crossbeam movably;
One or more the first springs;
One or more the second springs;
The second portion that wherein said one or more the first spring is attached to the first portion of described crossbeam and described one or more the second spring the second portion of described framework is attached to described crossbeam by the first portion of described framework, is suspended between the described first portion and described second portion of described framework described crossbeam; With
Wherein said inductor system comprises at least one inductor, and described at least one inductor is attached in the Part III of described crossbeam or described framework;
At least one magnet, it is attached to one of the described Part III of described framework or described crossbeam;
The motion that wherein said crossbeam carries out when being exposed to wind causes the first inductor through described at least one magnet.
3. non-rotating wind power plant according to claim 2, wherein said crossbeam is D shape.
4. according to the non-rotating wind power plant described in claim 2 or 3, wherein said crossbeam is hollow.
5. according to the non-rotating wind power plant described in claim 2,3 or 4, it also comprises one or more guide rails.
6. non-rotating wind power plant according to claim 2, it also comprises:,
One or more extra crossbeams;
One or more extra upper springs;
One or more extra lower springs;
The Part IV that wherein said one or more extra upper spring is attached to the Part III of described crossbeam and described one or more extra lower spring the second portion of described extra crossbeam is attached to described crossbeam by the first portion of described extra crossbeam, is suspended between the described first portion and described second portion of described framework described one or more extra crossbeam.
7. according to the non-rotating wind power plant described in claim 2 to 5, the described first portion of wherein said framework is top, the described first portion of described crossbeam is top, and the described second portion of described framework is bottom, and the described second portion of described crossbeam is bottom.
8. according to the non-rotating wind power plant described in claim 2 to 7, the described Part III of wherein said framework is sidepiece.
9. according to the non-rotating wind power plant described in claim 2 to 8, wherein said crossbeam approximate horizontal hangs.
10. non-rotating wind power plant according to claim 9, wherein said crossbeam motion is substantially vertical.
11. according to the non-rotating wind power plant described in claim 2 to 10, and the surface of wherein said crossbeam is uniform and smooth.
12. according to the non-rotating wind power plant described in claim 2 to 10, and the surface of wherein said crossbeam is that part is smooth.
13. according to the non-rotating wind power plant described in claim 2 to 10, and the surface of wherein said crossbeam is even roughness.
14. according to the non-rotating wind power plant described in claim 2 to 10, and the surface of wherein said crossbeam is that part is coarse.
15. according to the non-rotating wind power plant described in claim 2 to 14, and wherein said at least one inductor or described at least one magnet are attached to the first end of described crossbeam.
16. according to the non-rotating wind power plant described in claim 2 to 15, wherein selects spring-mass to promote self oscillations campaign.
17. according to the non-rotating wind power plant described in claim 2 to 15, and wherein said crossbeam has the freely cross-sectional geometry of the group of following composition of choosing: square, cylindrical, reverse D shape crossbeam (its apoplexy is mainly imported on the circular portion of described crossbeam but not on flat) and in " being greater than " or " being less than " with respect to the equilateral wedge importing in the direction of wind.
18. according to the non-rotating wind power plant described in claim 2 to 17, and wherein said spring is drawn into state of rest.
19. according to the non-rotating wind power plant described in claim 2 to 15, wherein selects crossbeam quality to promote self oscillations campaign.
20. 1 kinds produce the method for wind energy, and it comprises:
To according to the non-rotating wind power plant described in any one in claim 1 to 19, be exposed to wind to use Vortex Shedding to produce oscillatory movement in response to wind energy; With
The motion that should carry out via described non-rotating wind power plant use sense and produce power.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161476103P | 2011-04-15 | 2011-04-15 | |
| US61/476,103 | 2011-04-15 | ||
| PCT/US2012/033754 WO2012142563A1 (en) | 2011-04-15 | 2012-04-16 | Non-rotating wind energy generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103732915A true CN103732915A (en) | 2014-04-16 |
Family
ID=47009734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280023380.XA Pending CN103732915A (en) | 2011-04-15 | 2012-04-16 | Non-rotating wind energy generator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2697509A4 (en) |
| JP (1) | JP2014510877A (en) |
| CN (1) | CN103732915A (en) |
| WO (1) | WO2012142563A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2612484C1 (en) * | 2015-10-01 | 2017-03-09 | Анатолий Павлович Ефимочкин | Wind generators (options) |
| CN106499352A (en) * | 2016-11-02 | 2017-03-15 | 西南石油大学 | A kind of vortex-induced vibration suppression device for installing axial slip rotary blade pair and method |
| CN108566068A (en) * | 2018-05-21 | 2018-09-21 | 广东电网有限责任公司 | Oscillatory type wind power generation plant |
| CN108869163A (en) * | 2018-06-25 | 2018-11-23 | 哈尔滨工程大学 | A kind of Karman vortex street generator |
| CN115163401A (en) * | 2022-07-20 | 2022-10-11 | 中国长江三峡集团有限公司 | Wind power generation device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9222465B2 (en) | 2011-04-15 | 2015-12-29 | Northeastern University | Non-rotating wind energy generator |
| WO2015020887A2 (en) * | 2013-08-08 | 2015-02-12 | Northeastern University | Improvements for a non-rotating wind energy generator |
| WO2014090603A1 (en) * | 2012-12-12 | 2014-06-19 | Repsol, S.A. | Energy converters and energy conversion systems |
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| CN115163401B (en) * | 2022-07-20 | 2023-06-06 | 中国长江三峡集团有限公司 | Wind power generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014510877A (en) | 2014-05-01 |
| EP2697509A4 (en) | 2014-08-27 |
| WO2012142563A1 (en) | 2012-10-18 |
| EP2697509A1 (en) | 2014-02-19 |
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