CN106917720A - Strong fan blade magnetic suspension large-scale vertical wind power system - Google Patents

Abstract

Large-scale vertical wind power system of the invention, the turbine is 10MW grades or more power stage ultra-large type unit, main blade is composited by two blade both arms of support blade up to Lyons, Sa Woniusi, wind ball etc., wind ball solves the problem of aerodynamical brake, generator uses permanent magnet direct-drive, whole shafting is that structural strength highest, generating efficiency highest, security are best both at home and abroad at present, is industrialized the most wide wind turbine generator group of coverage rate using the magnetic suspension spring structure without additional magnets.

Description

Strong fan blade magnetic suspension large-scale vertical wind power system

Technical field

It is to propose a kind of practical surpassing specifically the invention belongs to turbine power machine technical field of power generation The high-power compound vertical-shaft wind turbine generator system of strength structure.

Background technology

Wind turbine (can be also simply referred to as wind turbine or blower fan) below, be the kinetic energy of wind is changed into it is suitable The receptible mechanical energy of generator shaft is closed, the renewable energy driving source dress of generator rotary electrification is then driven Put.During whole wind-power electricity generation, the production capacity of turbine is first important.

In existing widely used horizontal shaft turbines, industrial practice is proved, the increase of single-machine capacity, Advantageously reduce the cost of unit power installed capacity and the degree electricity cost of wind-power electricity generation.Therefore, unit volume Determine power capacity constantly to increase, the single-machine capacity of horizontal shaft turbines generally from last century Mo megawatt (MW) level is increased to 2~3 current MW class, at present the research and development MW class of unit 4~6, and distant view is aimed at The target of 10~15 MW class, this is to carry out the general trend that wind power technology develops evolution in the recent period.

In vertical axis turbine field, the research of super high power wind-driven generator is also in the ascendant.Britain Darrieus are taken lower semisection, then on fan blade top by the AerogeneratorX designs that Arup companies release Plus the end fan blade for being referred to as rigid sail, the new a kind of covert darrieus vertical axis turbine for constituting, design Rated power 10MW, 3 revs/min of rated speed.

For its weak point, Chinese invention patent application 201410048976.6《10MW grades of air is moved The vertical shaft wind electric system of dynamic braking》, following improvement has been made to AerogeneratorX designs：

1st, single armed is changed into three-dimensional both arms；

2nd, rigid sail is made into vane；

3rd, making vane can change angle, to obtain the machinery of the turbo-power in aerodynamics meaning Stopping power.

After being improved more than, still suffering from shortcoming also needs to be further improved, such as because fan blade is very long, vane arm Amount of deflection it is too big, rigidity is not enough, blade is easy to produce vibration in high wind, thus may interfere with turbine The normal operation of machine produces huge noise.

The content of the invention

The invention solves the problems that task be, for existing ultra-large type turbine wind power system listed above Various technological difficulties, propose new total solution, and this programme includes compound high-strength structure Wind turbine, magnetic suspension shafting, and comprehensively the aerodynamic braking structure of wind turbine, generator design etc. are more The technical scheme of individual subsystem.

Scheme strengthens turbine blade using the blade both arms fan blade of stereochemical structure two and short main shaft first Structural strength rigidity, infrastructure cost is reduced, turbine set is had anti-high wind ability higher, while can be with Extend the cut-out wind speed of unit, increase cut-off wind energy of the unit in high wind speed area；Secondly by various compound The synthesis driving moment of vertical axis turbines, increases generated energy；Again by the reversion reality of turbine distal end wind ball Existing aerodynamical brake；Generator new technology is finally used, shafting is improved for example with magnetic suspension structure Efficiency, makes unit turn into the complete wind generator of power Mechatronic Systems technology.

Secondly, the rigid sail during former AerogeneratorX is designed moves the centre of both arms fan blade to, increases The solidity of both arms fan blade, as the support member between both arms fan blade, reduces fan blade issuable in strong wind Vibration.

A kind of wind power system being made up of ultra-large type vertical axis turbine and generator, current transformer, its feature Be, turbine set by main shaft (1), both arms airfoil structure darrieus blower fan (2), spindle axis Sa Wo Niusi blower fans (3) and distal end wind sportsmanship machine (4) are composited；There is support fan blade between both arms, support Fan blade is in itself lift-type fan blade, is also enhancing both arms wing rigidity and intensity with the common production capacity of both arms fan blade Resulting structure part；Distal end wind ball (4) is rotatable type wind turbine structure, wind ball operating position opportunity Group can produce the bimoment of addition, and the wind ball after reversion then makes driving moment reversely realize aerodynamics Braking.

By every improvement of the invention, the blower fan before the structural strength ratio of rigidity of turbine is not improved has very It is big to improve.The both arms wing long is divided into a section local wing by support fan blade, so as to increased darrieus The rigidity of blower fan (2), is difficult to produce vibration in strong wind.Meanwhile, support fan blade has been further added by, plus The upper compound increased driving moment of many structure blower fans, the power increase of unit, but machine comparatively speaking Group manufactures and designs and is not difficult, and cost is also little.Driving moment reversely, is solved after the wind ball reversion of distal end The brake problem of vertical shaft fan, makes security of system be guaranteed.Generator having new structure is adapted to straight drive, It is adapted to site operation, it is to avoid the problem of superelevation super large part transport, eliminates the fault rate high of gear-box With high maintenance cost of upkeep.Multinomial new technology and new construction innovation are superimposed, and make system of the invention Overall performance is superior, is adapted to industrial production, and can give play to the tremendous economic technical advantage of ultra-large type blower fan.

Brief description of the drawings

Fig. 1, traditional darrieus vertical axis wind turbine sketch.

Fig. 2, the arm darrieus blower fan profile view of two blade of open innovation in knowledge type half.

Fig. 3, improved both arms darrieus and Sa Woniusi composite blowers look squarely structure diagram.

Fig. 4, improved both arms darrieus and Sa Woniusi composite blower plan structure sketches.

Fig. 5, several Sa Woniusi blower fans S-shaped blade shape figures.

The view of fan blade two is supported between Fig. 6, leaf of the invention.

Fig. 7, be modified before the band distal end compound vertical axis turbine of wind ball look squarely structure diagram.

Fig. 8, several wind sportsmanship machine shape graphs.

Fig. 9, the compound vertical axis turbine of reinforcing fan blade of the invention look squarely structure diagram.

Figure 10, the asymmetric spherical pair of wind sportsmanship leaf with lift look squarely sketch.

Figure 11, the asymmetric spherical pair of wind sportsmanship leaf diagrammatic top view with lift.

Figure 12, of the invention open the half-sectional structure chart of heart type structure generator.

The magnetic suspension structure principle chart of Figure 13, general generator of the invention.

Figure 14, wind power system structured flowchart of the invention.

Specific embodiment

Current large-scale volume production business blower fan, Mainstream Packs is the horizontal axis turbines type of 2~3MW.Level Axis wind turbines, the airfoil fan generally reinforced using thin three pins epoxy resin or carbon fiber-containing, blade Butt is fixed on wheel hub, and main shaft is connected to by wheel hub, and main shaft rotation output is driven under wind-force effect Mechanical energy, then mechanical energy is become by constant frequency and constant voltage electric energy input power network by generator and current transformer.Three pins Formula blade uses the single-ended fixed form of cantilever beam structure, therefore, blade construction stress is big, yielding, Structural strength is low, and the effect of wind-engaging power is easily damaged, therefore has fan blade to fracture accident in high wind repeatly, and this is The most fatal structural weak points of trunnion axis blower fan.Therefore, when power increases to the 10MW levels of super high power When, blade must cause material cost and process costs big using structural strength carbon fibre material higher Width is raised, and especially becomes apparent from deficiency in terms of the survival ability under resisting strong storm wind.

Vertical axis wind turbine blade can multi-point support, particularly Φ types darrieus blower fan, the end of blade two Point is fixed on main shaft, can be obtained and be supported enough, and blade stress is substantially reduced, and turbine wind loading rating shows Enhancing is write, additionally, vertical shaft fan need not go off course to wind, gyroscopic effect during without trunnion axis fan yaw Torque is hindered, and drive transmission device and generator can be installed on the ground, save tower etc., excellent More property is obvious.

Vertical axis wind turbine has two major classes --- resistance-type and lift-type, resistance type have it is plate, The multiple structural forms such as wind ball-type and S types, the main shaft both sides fan blade of resistance-type is produced and reversely rotates torque, So the wind resistance of both sides fan blade must be made to produce difference, directional-rotation torque, resistance are produced using resistance difference Power type has larger staring torque, but tip-speed ratio is low, in wind wheel size, weight and the certain premise of cost Under, there is provided power output it is low.

, generally using the blade of aerofoil profile, main shaft both sides fan blade is there may be equidirectional rotation for lift-type Torque, its staring torque is relatively low, but tip-speed ratio can be very high, for the wind wheel weight and cost that give, There is efficiency and power output higher, be the first-selected type of large-scale vertical blower fan.

Typical large-scale vertical turbine is in 19th century by French engineer's darrieus (Darrieus) The invention thirties, be the establishment person of modern vertical axis wind turbines.In 20 century 70s, plus National science research institute of putting on airs has carried out substantial amounts of research to this, vertical axis machine is turned into current trunnion axis wind The main competitor of power generator.Darrieus formula wind wheel is a kind of lift-type turbine plant, camber blades Section be aerofoil profile, variform darrieus formula wind-driven generator, such as Φ types, Δ till now Type, Y types and H types etc..These wind turbines are usually designed to two blades, three blades or multiple-blade, from The various factors such as performance, cost consider, in Large-scale machine set, the Φ type darrieus blower fan costs of two blades It is minimum.

Fig. 1 is the blade darrieus blower fan sketch of tradition Φ types two.In figure, two panels semi arch profile fan blade pair Title is connected to main shaft both sides, due to the blade using both-end connection, so turbine strength and stiffness are better than The cantilever beam structure of the single-ended connection of trunnion axis blower fan, structural stress is small, deformation is few, intensity and toughness is big.Hang down D-axis blower fan need not go off course to wind apparatus, it is not necessary to tower, and generator can be arranged in lower position very Ground can be extremely placed on, this can save whole machine cost, to installing and maintaining also highly beneficial, the above is all The advantage of vertical axis turbine.But the maximum structural disadvantages of darrieus turbine are that its main shaft is oversize, this Main shaft long, it is ensured that the bulk strength rigidity of turbine all has a difficulty, main shaft not only manufacturing cost It is very high, and in rotation process, how to prevent from rocking, it is also to need the technology that quite expense energy is solved to ask Topic.

Trunnion axis blower fan develops into MW grades sum MW grades, therefore, same power is also being explored by various countries The large-scale and ultra-large type vertical shaft fan of rank.By constantly exploring effort, what Britain Arup was released AerogeneratorX is designed, and darrieus are taken into lower semisection as main blade, is then added on fan blade top The end fan blade of referred to as rigid sail, a kind of covert darrieus vertical axis turbine for being constituted is designed specified Power 10MW, 3 revs/min of rated speed.

From in terms of structure physics angle, Britain design, is to have carried out great wound to French darrieus prototype Newly, a kind of simplified shape that lower semisection is formed is intercepted equivalent to darrieus Φ types machine is omitted into upper semisection Formula, so as to eliminate tediously long main shaft, simplifies by such a, and the main shaft that expensive difficulty is done is just thorough Eliminate, according to the said firm's issue with reference to figure, the profile view for analyzing the unit is shown in Fig. 2.

Fig. 2 is the arm darrieus blower fan profile view of two blade of open innovation in knowledge type half.

From Fig. 2, can substantially analyze its basic structure is, flat on square (can also be circular) basis Generator and cabin are disposed with platform, there is a flat Y shape wheel hub, Y shape wheel hub upper end on generator shaft V-shaped y-bend insertion or install into two panels main blade, the distal end of main blade two is separately installed with rigid sail, Wind-engaging power is acted on, and main blade and rigid sail produce turning moment.Wheel hub lower end connects main shaft, and main blade is Wing, two blades are symmetrical centered on axle.Wind-engaging power is acted on, and two fan blades are produced in equidirectional wind The raw torque being added, two torques form common driving force and promote turbine and generator rotation.

Analyzed more than, AerogeneratorX designs are omitted on the innovative point of main shaft superiority really in acquirement It is remarkable in fact, there is marked improvement.But it should also be recognized that, it is another while a shortcoming is overcome Individual defect has been emitted out again, that is, the cantilever beam structure of fan blade is appeared in new design again, and this is just The cantilever beam structure of trunnion axis fan blade is repeated again, has reappeared low this big defect of intensity and toughness.

The present invention is that the system made on the basis of method ounce state technological achievement is improved, first using both arms Darrieus blade structure, to overcome the defect of its cantilever beam structure, creates a kind of firmer highly effective Ultra-large type vertical axis wind turbine.Both arms darrieus fan blade, is exactly to change original single armed fan blade It is both arms fan blade.The near-end of both arms is connected to short main shaft front and rear diverse location up and down, forms firm double three Angular structure.

The lower blade of double triangle arm structure darrieus blower fan is connected with blade in distal end, connection Mode can be fixedly connected mode using the permanent of special connector, it would however also be possible to employ between two leaves Fastener on contact plane is detachably connected mode.Upper and lower blade is connected with the structure type of both arms fan blade Afterwards, two blades can overcome single-ended connecting cantilever girder construction mutually by support to increase intensity and toughness Defect, the near-end of two blades is then connected to the lower end and upper end of main shaft (1), and triangularity is mutually propped up The situation of support.Whole blower fan has two panels both arms fan blade, and each both arms fan blade has upper and lower two blades, including Blade and its be all aerofoil profile as the end Φ blade of distal end connector, in all can obtaining wind by lift Kinetic energy, end Φ blades are just like single connector, Φ type two of its yardstick equivalent to one hundred kW grades Blade darrieus blower fan, but because it is away from axle center, the arm of force is long, and torque is bigger, so power can increase To hundred kW grades of level.It can be seen that after designed fan blade is changed to biplate by monolithic, it is extensive The intensity and toughness of basic darrieus fan blade is answered, has been both the improvement to trunnion axis blower fan cantilever beam structure, together When, two fan blades are involved in cut-off wind production capacity, and the fan blade length of darrieus blower fan may reduce, main shaft long Shorten dramatically.It can be seen that, this improvement had both overcome trunnion axis blower fan or AerogeneratorX design blades hang The inadequate shortcoming of arm girder construction intensity and toughness, overcomes darrieus Φ type blower fan main shafts long and rocks and manufacture again The shortcoming of high cost.

According to open source information analysis AerogeneratorX design, its length of blade about at 226 meters or so, this Blade long, after being segmented manufacture in factory, can be transported to using the manufacture method of large aircraft wing Scene splicing is integrally formed, and also overall skeleton can be manufactured on level land at the scene in the way of construction Build, after being then covered by covering forming, lifting is in place.

The blade up and down of both arms darrieus blower fan can be fixedly connected using the permanent of special connector Structure, it would however also be possible to employ the fastener Detachable connection structure between two leaves on contact plane.

To solve the problems, such as that darrieus blower fan starting torque is not enough, the present invention increases S type wind at axle center again Leaf blower fan.S types impeller blower has also known as Sa Woniusi types (Savonius) vertical shaft fan (3) Part lift, but main or resistance-type, Sa Woniusi devices have larger staring torque, in the present invention Short main shaft both arms darrieus blade structure axle center area increase S type fan blades, can effectively solve vertical shaft fan Starting problem.

Sa Woniusi blower fans assembly (3), include upper end fixed mount (11), lower end fixed mount (12) With two semi-cylindrical blades；Sa Woniusi assemblings are at axle center, and two semi-cylindrical blades are reverse It is arranged symmetrically, point is listed in main shaft (1) both sides, and is firmly implanted into two ends fixed mount；Between blade and main shaft Enough gaps are left, so as to can freely be flowed out into distinguished and admirable in semicolumn.

Increasing Sa Woniusi blower fans has three reasons, and first reason is to need to solve darrieus vertical shaft wind The not enough problem of the starting torque of machine, second reason is to need to overcome two blade darrieus blower fans rotating During torque fluctuation problem, the 3rd reason is to increase aggregate capacity.

Due to the darrieus blower fan structure of two blades, in the timing of wind direction and wind velocity one, during turbine operation Turning moment as produced by wind energy is continually changing with blade with angle position residing for wind direction, works as wind When the blade axis of machine is vertical with wind direction, torque is maximum；When the blade axis of blower fan runs to and wind During to parallel position, the torque produced by turbine is minimum, that is to say, that at the position, starting power Square is also almost nil.For Sa Woniusi S-shaped blades, S-shaped blade blower fan there is also in operation process The situation that the turning moment promoted by wind energy is continually changing, but when both arms darrieus fan blade and S blower fan leaves The symmetry axis of piece is installed at a right angle, the interlaced arrangement in position when, i.e., pushed away by wind in both arms darrieus fan blade Dynamic torque is minimum position, precisely S-shaped blade blower fan wind pushing torque maximum position；Similarly, exist Both arms darrieus impeller blower wind pushing torque maximum position, precisely S-shaped blade wind pushing torque are minimum Position.That is, the symmetry axis of the two is mutually perpendicular to and when torque direction is consistent, can just make the two The torque direction produced under same wind direction is consistent, and reaches optimal rich apology complementary effect, can make turbine The overall driving force square of system is relatively stablized and is tended to balance.Both arms darrieus are looked squarely with Sa Woniusi composite blowers Structure diagram is shown in Fig. 3.

The further improvement that the present invention is done to both arms darrieus blower fan, is firm further to improve its intensity Degree, scheme is the single triangular structure that will be made up of upper and lower fan blade and main shaft, is changed into by darrieus blower fan Fan blade up and down, the double triangle structure that constitutes of the upper and lower side fixed mount of Sa Woniusi blower fans and main shaft.Its Concrete structure is, the distal end of both arms darrieus blower fan, by blade (22) by end Φ blades (21) Connect lower blade (23) and turn into an overall fan blade, and the blade proximal end of both arms darrieus blower fan is connected For its blade (22) is connected to the upper end fixed mount (11) of Sa Woniusi fan blades, its lower blade (23) The lower end fixed mount (12) of Sa Woniusi fan blades is then connected to, and their tie point is also mutually to hand over Wrong, if that is, their blade (22) is connected to the upper end fixed mount (11) of Sa Woniusi fan blades A diagonal, then their lower blade (23) be connected to the lower end fixed mount (12) of Sa Woniusi fan blades Other direction diagonal on.So allow for main shaft (1), be firmly attached to two pieces of fixations of main shaft Frame (11 and 12) and upper and lower blade (22 and 23), constitute the double triangle with robust construction intensity Structure, i.e., each darrieus fan blade, by upper and lower blade, fixed mount and main shaft constitute one knot Structure, all has a generally triangular shape shape in floor projection and upright projection, and double triangle structure is than single triangle knot Structure has the structural strength of bigger resistance wind thrust.Because two blade heights on same arm are different, so Will not mutually stop windward, hinder energy is intercepted and captured from wind.

Both arms double blade structure of the invention is reflected in floor projection and vertical plane and is all presented firm Triangular structure, such a structure is highly resistant to from outer masterpiece both vertically and horizontally With reduction blade stress and deformation.For example, the triangular structure of horizontal plane projection can resist wind thrust Influence, increases the structural strength under wind thrust, and the triangular structure of vertical plane projection can resist blade Gravity influences.Thus, the double three-legged structure darrieus blower fan tools of the both arms as main force's production capacity of the invention Have than a conventional flat shaft turbine machine any now or the much higher structural strength of vertical axis turbine and Rigidity.On the basis of high structural strength, it is possible to extend the work wind speed range of wind-driven generator, example Such as, the cut-out wind speed of turbine can be brought up to 20~25 meter per seconds from 15~20 general meter per seconds, very To 25~35 meter per seconds, so as to extend the production capacity wind speed range of turbine, obtain more from high wind speed wind Energy.

Fig. 3 and Fig. 4 are exactly that the improved both arms double triangle fan blade darrieus of institute of the invention are answered with Sa Woniusi Blower fan is closed to look squarely and plan structure sketch.

In Fig. 3, generator (5) on basic (6), main shaft (1) by metal (upper from By rotating, bearing block is placed on axle center (10), axis embedded base or basis.If using anodontia Roller box directly drives scheme, then main shaft (including turbine shaft and generator shaft) is structure as a whole.

Fig. 4 is improved both arms darrieus and Sa Woniusi composite blower plan structure sketches.Sketch is to go Except upper end fixed mount it is observed that structure.Can be analyzed from Fig. 4 and drawn, if wind is from figure reclaimed water Square to being blown into, then the torque very little that darrieus blower fan is obtained, but produced by Sa Woniusi fan blades Torque is very big；If wind vertical direction from figure is blown into, the torque that darrieus blower fan is obtained is very big, And the torque of Sa Woniusi fan blades may be minimum.Therefore, Sa Woniusi blower fans are symmetrical with darrieus blower fan It is consistent that axle is mutually perpendicular to install and make the torque direction that the two produces under same wind direction, optimal to reach Production capacity complementary effect.Installation should make Sa Woniusi blower fans and darrieus blower fan each produce maximum moment or The wind angle of minimum torque is interlaced, for example, can make Sa Woniusi wind in the 0 ° or 180 ° wind in direction Leaf generation maximum moment, and the torque that the 90 ° or 270 ° wind in direction then can be obtained darrieus blower fan It is maximum.When the symmetry axis of the two is mutually perpendicular to and torque direction is consistent, optimal complementary effect just can be produced, The overall driving force square of turbine system can be made to tend towards stability and balance.

Fig. 5 is several Sa Woniusi blower fans S-shaped blade shape figures.S-shaped blade shape is for Sa Woniusi The cut-off wind efficiency of blower fan, running speed have a significant impact.Fig. 5 is only the several of the planform of S-shaped blade Brief example is planted, all possible cases of design are not represented.Due to the product of the size and shape of S-shaped blade Energy efficiency, will determine that this kind of turbine function obtains the quantity for being converted into mechanical energy from kinetic energy, so The requirement of its design is very high.Particularly shape, on the basis of certain material cost, it should according to air Dynamics Design calculates S-shaped blade shape and size, and the height for designing calculated level is most important, first First to consider the wind thrust suffered by them, thrust is bigger, obtain wind energy also greatly, secondly consider wind resistance, If usual one side blade is subject to wind thrust, another side blade must be subject to wind resistance, and the difference between the two is Driving moment can be formed.Simplest blade shape is semi-cylindrical, such as Fig. 5 a) shown in, semi-cylindrical Blade can obtain the wind thrust of maximum with the material for most saving, but its wind resistance is also very big, so not being Optimal blade shape.Fig. 5 b) it is elliptical cylinder-shape or streamline column type blade, due to streamline column type blade Wind resistance is smaller, but wind thrust is unrelated with streamline shape, so its wind thrust increases with the difference of wind resistance Greatly, cut-off wind ability is better than semi-cylindrical.Fig. 5 c) be asymmetric side shape S-shaped blade, using asymmetric The lift that side produces, can more increase the lifting force moment of S-shaped turbine, improve wind energy transformation efficiency. The two distinct types of production capacity characteristic of resistance-type and lift-type is had concurrently due to S-shaped blade, so by reason By and experiment, can be designed that various shapes.The need for the present invention can only coordinate 10WM Large-scale machine sets, Enumerate three kinds of examples of shape, it is impossible to summarize more shapes.

Two pieces of fixed mounts of upper and lower side on S-shaped blade, marked in Fig. 4 is rectangular shape, Three kinds of different shapes are shown as in Fig. 5, for example, Fig. 5 a) and Fig. 5 c) it is ellipse, and Fig. 5 b) It is the asymmetric cylindricality according to specific S-shaped blade, its material cost is minimum.When S-shaped blade shape and After position determines, so that it may design certain shape of fixed mount, from saving material, mitigate main screw lift Target is set out, and fixed mount can also use other structures part, such as fixed mount of non-monoblock.

It is not singly the support of Sa Woniusi blower fan S-shaped blades due to fixed mount, is also main shaft and darrieus wind The proximal end connector of leaf, darrieus blower fan is also transmitted while Sa Woniusi blower fan torques are transmitted and is produced Torque, so its general structure intensity, install fixed and connected mode has significant impact to whole machine intensity. It is easy to process in view of rectangular shape, so being indicated with rectangular shape in figure.But use rectangle Afterwards, it is inclined-plane with the connection of blade, installs and inconvenient.It is proposed that using polygonal design, So that fixed mount is an orthogonal plane with the connection of blade, blade design determination more preferably may be needed Determine the concrete structure shape of fixed mount again afterwards.

, there is an end fan blade for being referred to as rigid sail on fan blade top in AerogeneratorX designs. In the present invention, then by rigid sail change over support fan blade form move to both arms darrieus fan blade it Between, on the premise of it can produce more multi-energy, and as the support member of blade, further increase turbine The rigidity of blade, is allowed to be not susceptible to vibration in strong wind.And the end position of original rigid sail, then with Distal end wind ball replaces.

Fig. 6 is support fan blade schematic diagram between leaf of the invention.In figure, support fan blade (24) will be large and long Both arms fan blade is cut into short and small triangle one by one, makes as the strong of darrieus blower fan turbine primary blades Degree rigidity gets a promotion, it is therefore prevented that strong wind shakes the effect of power to the mechanical shock of blade or cause, have also been enlarged System work wind speed range, improves system power capacity.Support fan blade belong to lift-type structure, be by Rigid sail changes the result of support fan blade (24) into, and one or more support fan blade reaches inner in airfoil structure Between blower fan (2) both arms in distress, both arms fan blade is cut into short and small triangle one by one, so support Fan blade can improve the intensity and toughness of darrieus blower fan, and itself can also intercept and capture energy in wind.

In the present invention, the top end of the fan blade of darrieus blower fan, fixedly mounts a wind ball, amounts to two Individual wind ball is symmetrical.Wind ball cuts the principle of energy from wind, briefly chats it, can be obtained from air volume meter Enlightenment.

Fig. 7 is that the band distal end compound vertical axis turbine of wind ball before being modified looks squarely structure diagram.In figure Darrieus blower fan distal end is connected using plane and saves Φ blades, and wind ball (4) is then fixedly mounted on up to inner In distal flat surface in distress, installation direction is identical.

The symmetry axis of wind ball is with the axis of darrieus impeller of blower is close to right angle intersection but should not use straight Hand over, because the darrieus impeller of blower after orthogonal is identical by the force-bearing situation of wind vector with wind ball, Resultant moment produced by darrieus blower fan and wind sportsmanship machine is difficult to cross zero moment wind direction, intersects a small angle Degree can just avoid the two common zero moment area, so suggestion does not use orthogonal to arrange.In addition, wind ball Blower fan does not have torque compensation to act on darrieus blower fan, this point and Sa Woniusi blower fans and darrieus blower fan Between relation it is different, so both wind ball and Sa Woniusi blower fans can not mutually replace.Because Sa is fertile Knob this blower fan is in shaft core position, and the arm of force is short, and wind-ball position is in fan blade outer end, and the arm of force is especially long, so If identical material cost, the contribution Piza Wo Niusi blower fans of wind sportsmanship machine-to-machine group power output are big Much.Certainly consider from another side, in the process of running, because linear velocity is different, wind sportsmanship machine Resistance also Piza Wo Niusi blower fans are much bigger, so to the negative effect of generating unit speed also Piza Wo Niusi Blower fan is big.This is accomplished by making the power distribution at each position rationally design arrangement.

Fig. 8 is several wind ball shape graphs.Wind ball can also choose different shapes as Sa Woniusi fan blades Shape, as long as being that three-dimensional spheroid just can be with by the plane cylinder structural reform of Sa Woniusi fan blades.It is for example spherical, ellipse It is spherical or asymmetric spherical.Fig. 8 a) it is hemispherical, equivalent to there is certain thickness hemisphere, by hemisphere Bottom be fixedly attached in darrieus on fan blade or end Φ blades, the end wind ball material of dome-type Material is most saved, and is also easier to make.Fig. 8 b) it is elliposoidal fan blade, elliposoidal is streamlined spheroid-like, The wind sportsmanship resistance of spheroid-like is smaller, has a larger resistance difference than the end wind ball of dome-type, effect compared with It is good, but streamlined design needs certain accurate calculating.Fig. 8 c) it is asymmetric spherical end wind ball, Asymmetric spherical wind ball, it is possible to use certain aerofoil profile side, equally may be used in the wind flow of certain orientation Lift can be produced, wind ball at this time may possess existing resistance-type the feature of lift-type again, is one Plant resistance lift mixed type fan blade, it should can effect with more more preferable than the former two section.Elliposoidal is not right Claim spherical installation method identical with dome-type.

Fig. 9 is exactly the compound vertical axis whirlpool with semicircle wind ball through supporting fan blade tightness improvement of the invention Turbine looks squarely structure diagram.

Due to the unilateral upside for being arranged in fan blade of wind ball in Fig. 9, acted on by wind-force, can be to fan blade A torsion is produced, therefore, a same or analogous wind ball can be fixedly mounted in the bottom of fan blade, As double wind ball machine groups, double wind balls can not only eliminate the torsion of single wind ball, moreover it is possible to increase power of fan defeated Go out, be double at one stroke obtaining.

Figure 10 is exactly that the of the invention pair of compound vertical axis turbine of wind ball looks squarely structure diagram.Double wind balls Compound vertical axis turbine is exactly the lower position in unilateral arrangement fan blade, is fixedly mounted by upside pattern One same or analogous wind ball, then the wind thrust or wind resistance being either subject to, upper and lower two wind balls The power of generation is basically identical, and the thrust resistance of wind can be superimposed, and torsion can then cancel out each other, darrieus Fan blade would not be produced deformation by unilateral twisting force.Meanwhile, as wind ball is also changed into higher efficiency Dissymmetrical structure, so that it may be built into the compound blower fan of lift-drag, improves blower fan cut-off wind efficiency.

Figure 11 is that the asymmetric spherical pair of wind sportsmanship leaf with lift looks squarely sketch and diagrammatic top view.Two figures In, blade (22) and lower blade (23) converge in distal end, as a small combination plane, plane Double wind balls blade (4) are installed up and down, the near-end of upper and lower blade (22,23) is connected respectively to Sa Woniusi The upper and lower side fixed mount (11,12) of fan blade (3), upper and lower side fixed mount is then connected with main shaft (1), On basic (6), main shaft is arranged on the bearing block in axle center generator (5).

For ultra-large type wind turbine, huge rotator inertia under strong wind or high wind, by machine Brake is extremely difficult to effective brake purpose, so if ultra-large type wind turbine does not have air to move If dynamic braking function, the security of unit is cannot be guaranteed.It is well known that large-scale trunnion axis Machine already solves the problems, such as aerodynamic braking, is to use leaf in the fixing oar constant speed unit of early stage Sharp flow spoiler realizes aerodynamic braking function, and when braking is needed, the action of blade tip flow spoiler changes Blade angle, makes to turn to opposite vane angle position with whole fan blade identical vane angle position, therefore formed One rightabout torque, under the influence of this torque, turbine is possible to slow down until stopping turning It is dynamic, then, could also allow machine inner brake brake sticking brake.In proceeding to current speed-changing oar-changing unit, Then directly using the change of propeller pitch angle, it is possible to realize aerodynamic braking.Thus, trunnion axis machine Operation safety is secure.But, vertical axis machine, particularly large-scale vertical machine will be disturbed by blade tip Stream device becomes the realization braking more difficult implementation in structure of oar device, so the aerodynamic braking of vertical axis machine is One technical barrier urgently to be resolved hurrily.

In the present invention, either single wind ball is compound or double wind balls are compound, increases of wind ball Bigger the reason for, also residing in wind ball can be fixedly mounted on fan blade, it is also possible in wind ball by the one of fan blade Side increases a vertical lower shaft, and bearing is installed on fan blade, and wind ball just turns into the structure that can be rotated about their axes, Such a wind ball, referred to as rotatable type wind ball.

Due to there is huge wind thrust on wind ball, so wind-force size when wind ball is rotated is by extreme influence To the speed that wind ball is rotated, therefore, the rotating shaft of wind ball should be designed on the position of balance shaft, it is so-called " flat The position of weighing apparatus axle ", i.e., under brakeless restrained condition, the wind-force of wind ball is blowed to from any direction, makes wind The possibility of ball autorotation is minimum.The wind ball rotated using balance shaft, can make motor be easier to drive Dynamic wind ball, is not easily susceptible to the influence of wind thrust.The concept of balance shaft can use " rudder balance " on ship Similar principle understands.

Using rotatable wind ball, can make wind ball both can as it is mentioned above installed in fixed position when Wind ball is the same, produces the driving moment with other fan blade equidirectionals, intercepts and captures wind energy, increases the power of the assembling unit, Them can also be made to deflect 180 °, produced and the rightabout torque of unit other parts, so as to turn into one The moment of resistance is planted, the moment of resistance can make unit slow down rapidly, when the moment of resistance is sufficiently large, in the work of the moment of resistance Under, unit can stop quickly.Which solves the braking of compound wind park of the invention Problem.The blade tip flow spoiler functioned as in horizontal shaft turbines of rotatable type wind ball, when needing system When dynamic, wind ball is turned to can just be realized.

Wind ball is rotated can two ways, be referred to as direct drive and dropout release type.Wind ball has Two positions, one is operating position, and one is application position, and wind ball must select a stop wherein On individual position.Wind ball is generally braked when not rotating by band brake apparatus, to prevent wind-force from acting on lower generation Rock, only when rotating, just unclamp band brake apparatus, it is allowed to its rotation.

So-called direct drive, is exactly two positions of wind ball, operating position, and application position, two The weight of position is identical, is of equal value in secure context.Motor is then leaned in conversion between two positions Forward and reverse driving and realize.Its working method is, in wind ball " work " position, to be filled by wind ball band-type brake Braking is put as motionless wind ball is relatively fixed, then when needing to brake turbine, first embraces wind ball Brake gear departs from braking, is passed through forward drive current, wind ball is turned to " braking " position, is driven into Electric current is then removed in position, and wind ball brake enters brake sticking brake again.Need to make wind ball operating position back to normal When, wind ball band brake apparatus is departed from braking, reverse drive electric current is passed through, rotate backward wind ball It is returned to operating position.

So-called dropout release type, is exactly two positions of wind ball, operating position and application position, two positions The weighted put, is non-equivalence in secure context, and typically the weight of application position is more than working position Put, although operating position is necessarily be in when turbine normally runs, but in view of safety first, is not run When necessarily be in application position.The band brake apparatus of dropout release type are identical with direct drive, but turbine On-position is constantly in before start-up operation, so unclamp first the band brake apparatus of wind ball, motor is used Wind ball is driven to turn to operating position, turbine could be started, accelerate into normal work by the effect of wind-force Make state.After reaching operating position, motor has a power failure, but band brake apparatus unclamp all the time, treat electrical apparatus release hook After action clasps electrical apparatus release, band brake apparatus just brake wind ball, will not brake the rotating shaft of wind ball, so only Motor to be powered and depart from braking with band brake apparatus while occurring to allow wind ball axis of rotation.But motor only has One traffic direction, without setting inverted car contactor.Once turbine needs braking, electrical apparatus release is threaded off Band brake apparatus automatic releasing afterwards, wind ball is rotated and is returned to application position automatically by accumulation of energy, while band brake apparatus Also band-type brake is acted.The principle of electrical apparatus release is similar to automatic switch.

The braking principle of rotatable wind ball of the invention, is somewhat similarly to the blade tip flow spoiler in trunnion axis machine Brake buckle, flow spoiler overturns the propeller pitch angle of blade tip, and fan blade total torque is reduced to zero, turbine stalling. In rotatable wind ball of the invention, it is also possible to which operating position and braking are set as blade tip flow spoiler Position, during braking, the upset of wind ball makes to help torque to be changed into braking moment, it is possible to rapid to realize braking. After certain aerodynamic braking, the foundation brakes on generator shaft must be relied on to realize real safety system It is dynamic.After foundation brakes combined floodgate, turbine rotor is no longer allowed to rotate.

The drive motor and motor internal contracting brake brake of wind ball are arranged on the interior of darrieus fan blade distal end Portion, is rotated by from gear, driving wind ball on the master gear on motor shaft and the wind ball axle being engaged with Change position.The service cable and control cable of motor are passed through in blade.Due to all being located with upper-part In on the rotor of turbine, so slip-ring brush pair and signal receiving/transmission device are must be provided with, to transmit electric power And signal.The controller of motor is then placed in the wheel hub of blade.

Using rotatable type wind ball of the invention, aerodynamic braking just is solved the problems, such as, realize air The unit safety target of dynamic braking.

In sum, wind ball (4) can be single wind ball, it is also possible to double wind balls, it is characterized in that, reach In blower fan distal end in distress connected using plane and save Φ blades, it is remote that wind ball (4) is fixedly mounted on darrieus End fan blade plane is upper and lower, and installation direction is consistent；Wind ball is shaped as hemispherical, elliposoidal or asymmetric spherical.

Drive line of the invention is directly driven it is not recommended that using gear-box speedup using non-gear box, is generated electricity Multipole synchronous generator then is driven using straight, this kind of synchronous generator also has permanent-magnet type and excitation type, but does not have Brushless type.

Generator is in the important step that can flow chain that the mechanical energy of turbine is converted into electric energy, so hair Motor is also the important component in whole wind power system.For the synchronous generator of the straight drive of non-gear box, by In the compound turbine of 10MW vertical axises design speed about between 1.5~3 revs/min, it is so low Rotating speed, the volume of generator, weight can be quite big, and cost is also very high, and transport is quite not yet Just, therefore, the present invention recommends to use a kind of novel electricity generator --- happy formula generator.

So-called happy formula generator, exactly a kind of major diameter, multipole that axle center part is open arrangement it is same Step generator.Due to the weight of generator, volume, cost and its rotation speed relation closely, reason is rotating speed It is low to make generator low to the cutting speed in magnetic field, therefore the induced voltage of generator is too small, voltage and electric current Product be that generator power cannot be improved.If generator diameter increases, cutting speed is accordingly improved, Power will and then rise.And the cost after the generator increase diameter of heart type structure is opened, including cost of transportation Increased amplitude is simultaneously little, and happy formula engine central space position is spacious, is easy to radiating and maintaining, In addition opening heart type structure also has some other advantages to be adapted to ultra-large type vertical shaft wind electric system.

Figure 12 is the happy half-sectional structure chart of formula generator of the invention, and generator is to turn outside major diameter in figure Subtype.

It can be recognized from fig. 12 that the main shaft (1) of turbine is while be also the main shaft of generator, collar bush On axle center (10), in the bottom insertion ground or foundation plinth in axle center, the lower axle between main shaft and axle center (13) are held in motor room, upper bearing (metal) is not marked in figure.

Generator (5) including motor room (50), rotor block and magnetic field (51), stator body and winding (52), Rotor ring (53) and motor room's door (54).Motor room is effectively equivalent to outside a larger motor Shell, bottom has door to be available for personnel to be maintained into generator.There is magnetic pole on rotor block, forever The magnetic pole of magnetic-type is Pork-pieces magnet, S poles and N the poles interlaced arrangement in the way of adjacent spaces of magnet In the inner side of rotor block yoke, if excitation type, then rotor field coil is inlaid with magnetic pole.Stator Armature winding is inlaid with the external cylindrical surface slotted eye of body, the inner side and bottom of stator yoke are stator support, The lower end of stator support is arranged in ground or base, and support is steel structure body, may be alternatively configured cylinder type, By the door on structure space or cylinder, personnel can enter heart district.Motor internal space is big, favorably In configuration radiating element.Heat is discharged by the heat absorber at the top of motor room.

Happy formula generator may be designed in inner-rotor type, in two kinds of patterns all can using p-m rotor or Excitation rotor.

The advantage of happy formula generator shows, the cutting speed of the generator armature winding after increase diameter Improve, the influence of motor speed reduction can be made up.For example, usual 2~3MW trunnion axis directly drive the volume of machine Rotating speed is determined about in 9 revs/min, about 6 meters of generator unit stator diameter, specified turn of AerogeneratorX designs Speed about at 3 revs/min, if by happy formula generator unit stator diameter design if 18 meters, the property of the two Shape parameter is approached, and power can naturally bring up to 6~9MW.In other words equivalent to increased one in system Speed directly drives step-up gear than half for 3 times, slightly improves stator shaft orientation length, so that it may up to 10MW. Because the straight drive generator of existing 3MW is because of superelevation ultra-wide, land transportation is very difficult, well imagines, The generator of 10MW cannot be transported at all, using the structure of happy formula generator, can be as power station Generator is assembled equally at the scene, and by generator component dispersion transport to Assembling, transportation problem is obtained Solve.Although 10MW machines are mainly used in marine wind electric field in the future, shipping solve problem can be used, Also the land place for also there are many suitable 10MW machines to use is not excluded for, is particularly opened in 10MW model machines The hair initial stage, it is necessary to first carry out model machine detection by land and observation is used, treat, by operation test, to overcome work Developing deeply turns into marine product after skill defect, so the restriction of traffic condition, happy formula can not be excluded completely Generator disperses transport using part, and whole machine is assembled at the scene, can effectively overcome the difficulty in transport.

Current direct wind-driven generator, is all variable speed drives generating, produced electric energy frequency and voltage It is change, it is impossible to direct grid-connected, so must there is a direct current intermediate link to be decoupled, to reduce DC rectifier electric current does not use three-phase alternating current system to the harmonic effects of generator, part high-rating generator, Change and the armature winding of the double three-phases of use.Generator in the present invention can both use three-phase electricity system or double three Mutually electricity is made, but using advanced efficient heterogeneous structure, such as five phases or seven armature winding that mutually electricity is made, it is electric Gas effect is more preferable.The number of phases more multi resonant wave frequency rate, is higher in principle, and the harmful effect of harmonic wave is smaller.But the number of phases Too much, motor manufactures and designs difficulty and can increase, and cost also can be improved accordingly, and five mutually or seven phases difficulty , close to double three-phases, electrical technology effect is but than double three-phases more preferably for degree.

Rotor ring is for needed for generator amature and turbine rotor are powered, because rotatable wind ball needs Driving power supply, many controllers and sensor on turbine are required for power supply.Slip ring has three, can make Rotor obtains three-phase electricity, and such motor can use the AC induction motor of economic and reliable.With slip ring The brush of correspondence contact is then arranged on axle center (10) and (is not drawn into figure).

Due to excitation type generator field it is desirable that adjustable direct current, and on be transported to rotor But it is constant pressure alternating current, so needs are by the excitation controller on rotor or on armature spindle or certainly Alternating current is carried out rectification and pressure regulation by dynamic voltage regulator AVR, then could be sent to exciting current Rotor field coil.The control signal of all input and output on rotor, including AVR rectifications and pressure regulation letter Number, the signal such as wind ball operating, can be using the method that is wirelessly transferred by the transceiver on rotor and ground Face transceiver keeps continuous communiction, can also use light-operated information transfer.Transmission information using analog quantity or Digital quantity, but it is proper using the digital quantity transmission that micro computer or industrial computer are controlled.Light-operated information can subtract Few electromagnetic interference, anti-interference and reliability are higher.

Current transformer of the invention uses electronics unsteady flow or motor unsteady flow, and current transformer is generally with four-quadrant PWM or SPWM pulse width modulation modes work, both exportable active power, also exportable certain nothing Work(, helps power network maintenance voltage stabilization, therefore, current transformer has to comply with power network Grid-connection standards, with low Voltage ride-through function.According to tradition, the present invention can use AC/DC/AC electronic inverters.

To improve system mechanics performance, present invention also adds the magnetic suspension structure of shafting.

Figure 13 is the magnetic suspension structure principle chart of general generator in the present invention.Generated electricity shown in figure Machine also can using traditional vertical hydroelectric generator structure, the generator of every use radial magnetic field, Magnetic suspension structure of the invention can be used.

The magnetic suspension structure of recommendation is referred to as magnetic suspension spring, and magnetic suspension spring is a kind of semi-magnetic suspension structure, The gravity friction of vertical engine can be eliminated, comparatively, the gravity friction of wind-driven generator is more than wind Thrust friction.

Its brief principle is described below：In traditional design bearing, rotatable parts generating as described herein The gravity of machine rotor and turbine rotor, is balanced by the axial force of bearing.If do not use thrust Bearing, will be considered that rotor inherently falls downwards.But actual conditions confirm such a with our experiment As a result, rotor only somewhat falls down and little by little just stably stops, this proterties, just as in generator There is a spring preventing rotor from continuing to fall down, this structure is proposed and applied in wind-power electricity generation first In machine, Chinese patent mandate 201520534983.7 is referred to,《Magnetic suspension spring in Wind turbines》.

With reference to Figure 13, its action principle can be understood.Directly attachment generator turns on main shaft (1) in figure Various blower fans and turbine rotor (2) on sub (51), rotatable platform, platform etc. are constituted, comprising this The gravity of unit whole rotor, if common thrust bearing to be changed two for rotationally and axially moving into freely Degree structure.After Action of Gravity Field is on generator amature, rotor is moved down, under rotor driven permanent magnet Move, the magnetic line of force between rotor and stator is elongated, the magnetic line of force of elongation try hard to shortening will produce one to On make a concerted effort.When this magnetic makes a concerted effort equal with gravity, then main shaft is no longer moved up and down, this be it is a kind of from The magnetic suspension force of balance is adapted to, it is more more preferable than the magnetic suspension force that any additional magnet is produced, because it does not have Any fringe cost.

Intrinsically, since bearing is not subjected to gravity, then the frictional dissipation caused by gravity Just it is completely eliminated.That is, gravity is transferred directly to hair by the magnetic suspension spring in generator Motor stator, and be transmitted in basic (6) by generator base.

In the present invention, as mentioned previously, generator has sufficiently strong magnetic field and winding to obtain efficiency Power generation performance and low-down cooling requirements part very high, so also there is sufficiently large magnetic suspension force to hold up Whole blower fan.

Figure 14 is wind power system structured flowchart of the invention.In figure, by the compound turbine assembly of wind-force (1,2,3,4) kinetic energy in interception wind, changes into the mechanical energy of turbine, and mechanical energy input generates electricity Machine (5), is converted into electric energy, by current transformer (7), voltage and frequency is all fluctuated with the change of wind speed Alternating current, be transformed to constant frequency and constant voltage alternating current feeding power network, current transformer (7) is an electric power electricity Sub- AC/DC/AC devices.

The present invention is the structural strength for solving the problems, such as turbine first, using darrieus, Sa Woniusi and The compound vertical axis composition of three kinds of wind ball coordinates efficient ultra-large type blower fan, finally by rotatable wind ball reality Existing aerodynamic braking.

In sum, large-scale vertical wind power system of the invention, the turbine be 10MW grades or with Upper power stage ultra-large type unit, two blade both arms darrieus, Sa Woniu that main blade is reinforced by support blade This, wind ball etc. be composited, wind ball solves the problem of aerodynamical brake, and generator uses permanent magnetism Straight to drive, whole shafting, using the magnetic suspension spring structure without additional magnets, is that country's external structure is strong at present Degree highest, generating efficiency highest, the wind turbine generator that security is best, industrialization coverage rate is most wide One of group.

Claims (9)

1. a kind of wind power system being made up of large-scale vertical turbine and generator, current transformer, it is special Levying is, turbine set is by main shaft (1), both arms airfoil structure darrieus blower fan (2), Sa Woniusi blower fans (3) it is composited with distal end wind sportsmanship machine (4)；There is support fan blade between both arms, support fan blade is in itself Lift-type fan blade, is also the structural member for strengthening both arms wing rigidity and intensity；Distal end wind ball (4) is can to turn Ejector half wind turbine structure, unit can produce the bimoment of addition, the wind after reversion during wind ball operating position Ball then makes driving moment reversely realize aerodynamical brake.

2. wind power system according to claim 1, it is characterized in that, the whole of both arms darrieus blower fan Blade is all aerofoil profile；The distal end of blade, inferior lobe is connected by blade (22) by tip blades (21) Piece (23)；And blade proximal end is connected as, its blade (22) is connected to the upper end of Sa Woniusi fan blades Fixed mount (11), its lower blade (23) is then connected to the lower end fixed mount (12) of Sa Woniusi fan blades, Their tie point is interlaced, if that is, their blade (22) is connected to Sa Woniusi fan blades One diagonal of upper end fixed mount (11), then their lower blade (23) be connected to Sa Woniusi wind The diagonal of the other direction of the lower end fixed mount (12) of leaf；Upper and lower blade is in floor projection and vertical throwing Double triangle structure is presented in shadow.

3. the wind power system according to claim 1 or claim 2, it is characterized in that, it is arranged on Sa Woniusi blower fans assembly (3) at axle center, include upper end fixed mount (11), lower end fixed mount (12) With two semi-cylindrical blades；Two semi-cylindrical blade reverse symmetries of Sa Woniusi blower fans are arranged, divided Main shaft (1) both sides are listed in, and are firmly implanted into two ends fixed mount；S-shaped blade shape is semi-cylindrical, ellipse One kind of the lift-type on cylinder or streamline column type or asymmetric side.

4. wind power system according to claim 1, it is characterized in that, Sa Woniusi fan blades install cloth Putting should be mutually perpendicular to the symmetry axis of darrieus blower fan, the interlaced arrangement in position, and make the two same The torque direction produced under one wind direction is consistent, and reaches optimal rich apology complementary effect.

5. wind power system according to claim 1, it is characterized in that, change rigid sail into support wind Leaf (24), support fan blade is between airfoil structure darrieus blower fan (2) both arms, one or more Both arms fan blade is cut into short and small triangle one by one by support fan blade.

6. wind power system according to claim 1, it is characterized in that, darrieus blower fan distal end uses Plane is connected and saves Φ blades；Wind ball (4) is fixedly mounted on darrieus distal end fan blade plane up and down, Installation direction is consistent；Wind ball is shaped as hemispherical, elliposoidal or asymmetric spherical.

7. the wind power system according to claim 1, claim 5 or claim 6, it is special Levying is, wind ball (4) is rotatable type balance shaft wind ball, and wind ball has two stop places of work and braking, Correspond to run well respectively and generate electricity and aerodynamic braking operating mode.

8. wind power system according to claim 1, it is characterized in that, the generator of wind power system is It is straight to drive synchronous generator, or happy formula synchronous generator.

9. the wind power system according to claim 1 or claim 8, it is characterized in that, generator It is major diameter permanent-magnet structure, bearing is double freedom magnetic suspension spring structure.