CN201043512Y - Inner rotor type aerogenerator starting with low wind velocity - Google Patents

Inner rotor type aerogenerator starting with low wind velocity Download PDF

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Publication number
CN201043512Y
CN201043512Y CNU2007201409853U CN200720140985U CN201043512Y CN 201043512 Y CN201043512 Y CN 201043512Y CN U2007201409853 U CNU2007201409853 U CN U2007201409853U CN 200720140985 U CN200720140985 U CN 200720140985U CN 201043512 Y CN201043512 Y CN 201043512Y
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China
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wind
generator
low
impeller
driven generator
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CNU2007201409853U
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黄国华
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SUPERB ELECTRIC (SUZHOU) CO., LTD.
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YONGYUAN MOTOR CO Ltd
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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
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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Abstract

The utility model relates to a low wind speed-started inner rotor type wind generator, that is, a windmill starts a generator to produce electricity. The windmill includes five to six broad plate-shaped unit vanes, which are evenly and intervallically arranged on the circumference of a vane wheel with a diameter accounting for at least half the length of the unit vane; the inner rotor type generator has the characteristics of low rotor inertia and low cogging torque and exports high rated voltage, which is then regulated to a specific voltage value by a back-end conversion system. Hereby, the utilization rate of wind energy can be increased, and the utility model can be started under the environment of wind power with a low wind speed and has the characteristics of low rotor inertia and low cogging torque. As a result, the expenses of the back-end utilization of recycled energy sources can be reduced.

Description

The internal rotor type wind-driven generator that low wind speed starts
Technical field
The utility model is relevant with wind power plant, more detailed it, be a kind of internal rotor type wind-driven generator that can start with low wind speed.
Background technique
Oil crisis in view of latter stage in the 7's 0; many American-European countries begin to seek energy outlet; the most positive is Denmark; from the 8's 0 from the beginning of; Denmark government promptly very supports wind-power electricity generation with making earnest efforts; so Denmark has throughout the world the most proud blower fan industry now, even the replacement fishery becomes outlet second bulk cargo.This state's wind-force generated energy to 2000 will reach power consumption 16% end of the year, Denmark government even plan to the year two thousand thirty wind-powered electricity generation to be increased to 50%.Germany then is that regulation wind-powered electricity generation electricity price was 90 percent of a final user price since legislation in 1991, and after the legislation, wind-powered electricity generation has the development that surges forward, even catches up from behind.The machine of typhoon more than 9,000 be equipped with to the end of the year 2000 in Germany, and installation in 2000 single year more reaches 1670MW, surpass the hat of the sum total of all tradition generatings of Germany for the whole world.
With regard to Taiwan power-generating industry structure view it, 67.3% electricity is arranged from thermal power generation a 999 year, 26.8% from nuclear energy, 5.9% from hydroelectric power.The economic benefit of nuclear energy power generation is held doubtful always by many advanced countries, be example with Britain, the U.S. and Germany, and it is after the electric industry liberalization, and many nuclear power plants close automatically because of economic benefit is too low.Estimate and get rid of economic benefit one thing, the nuclear waste that nuclear energy power generation produced and nuclear power plant's accident more may bring the offspring descendants infinite disaster.As for thermal power generation, then because of the oil plant dependence on import, and the relative influence of national security and economic independence is arranged, and the environmental pollution problem that it caused also should not be underestimated.Though hydroelectric power is dredged the destruction of stream and also should conscientiously be assessed in the usage ratio that China only accounts for units at present for physical environment, rivers and creeks.
Change the power-generating industry structure, wind-power electricity generation is feasible scheme, through scholar's expert assessment and evaluation, Taiwan for example, it is the superior area of wind energy potential, if this advantageous wind resource of use of energy mass efficient, but make the energy resource structure diversification, minimizing more can suit the long term policy of Sustainable Development to the excessive dependence of the individual event energy and lose outside the autonomous independence.
Below we do one with the principle of wind-power electricity generation and simply introduce.
Wind-power electricity generation briefly is to see through the wind energy rotor blade, wind energy is converted to mechanical energy, and utilizes generator that mechanical energy is converted to electric energy, utilizes storage battery with energy storage again.So wind power plant has mainly comprised windmill and generator two major parts.According to the pattern of windmill and generator combination, wind-driven generator is broadly divided into internal rotor type and external rotor type.
So-called external rotor type briefly, is the structure of rotor sideway swivel outside stator.The impeller wind-engaging drives this external rotor and rotates, and makes rotor and stator caused by relative motion electric energy, exports through the rear end rectifier rectification.The windmill of this pattern is representative with Rutland 913 types that Britain Marlec company makes.
So-called internal rotor type is the structure of rotor in the stator interior rotation.The impeller wind-engaging drives internal rotor and rotates, and makes rotor and stator caused by relative motion electric energy, exports through the rear end rectifier rectification.The windmill of this pattern is representative with the AIR403 type that U.S. Southwestern company makes.Compare with above-mentioned outward rotation type wind-driven generator, the windmill inertia of internal rotor type wind-driven generator is less, and relative startup is more or less freely.But the above wind-driven generator of 1KW that various countries adopt is adopted outward rotation type more at present.
Wind-driven generator is mainly used wind energy power, so windmill is the wind-engaging main body, so the design of windmill and wind energy are used association is closely arranged.Windmill as shown in Figure 1, be to connect fan blade haply with an impeller, blade is long banding pattern cloverleaf, the area of impeller only accounts for the minimum some of windmill main body, the ratio great disparity of fan blade and impeller, the swept area of windmill mainly is made of fan blade, so will increase the ability of fan blade acquisition wind energy, is main means to increase length of blade.According to structural mechanics, its structural strength of the fan blade of long banding pattern is also unstable, the phenomenon that bends easily during wind-engaging, and the situation that wind-engaging rocks is comparatively serious, causes the unsettled situation of wind cutting.In addition, in the swept area of above-mentioned windmill, the space between three fan blades has accounted for most ratios, and most wind can pass and not act on the fan blade from the space between the fan blade.Generally speaking, the windmill of these patterns has the ability and the not good problem of utilization ratio of acquisition wind energy, so should be arranged on the area that wind is good, the wind phase is long, mean wind velocity is big, wind-force is powerful and lasting, can't reach the target of low wind speed starting.
Whether wind-driven generator is activated easily, and except windmill structure, the rotor inertia of generator and cogging torque also are one of determinant factors.
About rotor inertia, with J=1/4GD 2Relation is analyzed (G is rotor weight (KG), and D is root diameter (m)), can demonstrate,prove root diameter decision rotor inertia, the cylindrical rotor of identical weight, the root diameter little person of healing, and rotor inertia is littler, starts more easily.So therefore the root diameter of internal rotor type generator is easier to be activated less than the root diameter of outward rotation type.In other words, when the rotor of the high inertia of windmill load, can make windmill be difficult for wind-engaging and start.
About cogging torque, the rotor of permanent magnet generator or motor has a kind of trend of aliging with stator along a certain specific direction, and trend can produce a kind of vibration torque thus, is called cogging torque or cogging torque (coggingtorgue).For magneto, cogging torque has direct influence power to the initiating wind speed of windmill rotation, and the generator of high cogging torque has pause point, and low speed runs up and has some setbacks, and the starting wind velocity of relative windmill must be drawn high.
Above analysis needs the wind-driven generator of design one preferable function must solve problems such as low wind speed starting is difficult for, wind energy utilization is not good as can be known.Next, the problem of exporting for the voltage of above-mentioned wind-driven generator is again done further discussion.
Wind-driven generator has a gen-set that is independent of the windmill rear end, and this gen-set is integrated in generator and rectifier in one cabin haply.In the stage of group system wind-driven generator, need to confirm earlier accumulating system or the power supply specific voltage (for example 12V, 24V, 36V, 48V) that load system adopted, the power generating equipment of selected a kind of exportable this specific voltage then of rear end.For example, if accumulating system DC24V then can only select to export the DC24V power generating equipment.That is to say, to change the means of power generating equipment as the different voltage outputs of strain, it is very high that this makes that building of wind-driven generator is set to this change, but voltage output and application area are but by specified limitation, expensive equipment like this can make the rear end utilize the expense of the renewable sources of energy to become expensive, does not meet economic benefit.
Summary of the invention
The utility model purpose is that the internal rotor type wind-driven generator that provides a kind of low wind speed to start to overcome the defective of above-mentioned conventional construction, reaches the enhancement wind energy utilization, the effect of starting and steady running in the wind environment of low wind speed.
In view of above-mentioned analysis, when design the utility model wind-driven generator, have for aspects such as the ability of fan blade acquisition wind energy, windmill structure intensity, wind energy utilization, generator amature inertia, cogging torque, starting wind velocity, voltage outputs to relate to more.
The internal rotor type wind-driven generator that a kind of low wind speed starts comprises a windmill, a generator, a carbon brush slip-ring combining unit and an empennage; The unit blade that this windmill mainly comprises an impeller and is mounted on this impeller periphery; This generator comprises the rotor that is used to accept the mechanical energy that this impeller transmits and produces electric energy, and it is connected with this impeller; This carbon brush slip-ring combining unit is connected with the transmission pressure of this generator; This generator and this carbon brush slip-ring combining unit are arranged in the cabin; This empennage comprises a connecting rod, and it is connected and fixed on this bottom, cabin; It is characterized in that:
Above-mentioned impeller is a disc structure, and its periphery is established a trip edge that supplies above-mentioned unit vane group to establish; The end of this unit blade and the combination of this trip edge is provided with an engaging groove, and this trip edge embeds in this engaging groove, and this unit blade has the plurality of fixed element, and is fixed on this trip edge;
The diameter of this impeller accounts for more than 1/2nd of this unit length of blade;
The said units blade is tabular, and has the above quantity of five leaves, and its ground, equispaced group is located on the trip edge of this impeller.
Wherein, this unit blade is the quantity of six leaves, and its ground, equispaced group is located on the trip edge of this impeller.
Wherein, above-mentioned generator is a low rotor inertia generator.
Wherein, above-mentioned generator is low cogging torque generator.
Wherein, this wind-driven generator is the generator of three-phase 80v voltage output.
Wherein, this wind-driven generator comprises that more one is used for rear end converting system that the output voltage of this wind-driven generator is adjusted.
Wherein, this rear end converting system is a transformer.
Wherein, this rear end converting system also comprises a rectifier.
The diameter of this impeller accounts for the ratio more than 1/2nd of this unit length of blade at least, makes it when starting, and is kept out the wind by the large size of impeller, and wind is directed to each blade, increases its startability; In addition, when identical length of blade, the design of big impeller makes the swept area of windmill strengthen, so increased wind energy utilization; The said units blade is to constitute the wide plate shape with its Aspect Ratio, and is located at the trip edge of this impeller with ground, the quantity equispaced group of five to six leaves; Above-mentioned generator is an internal rotor type, and has the characteristic of low rotor inertia and low cogging torque; Above-mentioned wind-driven generator mining height voltage rating output, and with a rear end converting system adjustment voltage.
The utility model function and beneficial effect comprise:
Wind-driven generator of the present utility model belongs to the internal rotor type wind-driven generator.
The utility model windmill can be promoted wind energy utilization, starts in the wind environment of low wind speed.
Windmill of the present utility model has the enhancement effect of steady running.
The utility model generator has the characteristic of low rotor inertia and low cogging torque.
The utility model wind-driven generator can make the rear end utilize the expense of the renewable sources of energy to be lowered.
Purpose and effect describe in detail in the back in detail.
Description of drawings
Fig. 1: be the windmill planimetric map of known wind-driven generator.
Fig. 2: be the External view of the utility model wind-driven generator.
Fig. 3: be the side view of the utility model wind-driven generator.
Fig. 4: be the three-dimensional exploded view of the utility model windmill.
Fig. 5: be side-looking of the utility model windmill and the inner equipped schematic representation of generator.
Fig. 6: be the utility model worm's eye view, the sample attitude of expression wind motor spindle.
Embodiment
An introduction is done for hardware of the present utility model by following elder generation, is that the basis discusses characteristics of the present utility model and effect with this hardware again.
Hardware
As shown in the figure, the utility model wind-driven generator comprises a windmill 20, a generator 30, a carbon brush slip-ring combining unit 40 and an empennage 50.Windmill 20 mainly comprises an impeller 21 and is mounted on unit blade 22 on this impeller 21.The rotor 31 of this generator 30 is connected with this impeller 21, accepts the mechanical energy that this impeller 21 transmits and produces electric energy.This carbon brush slip-ring combining unit 40 is connected with the transmission pressure 34 of this generator 30, and the electric power that generator 30 is produced is exported.This generator 30 and this carbon brush slip-ring combining unit 40 are set in the cabin 32.This empennage 50 is connected and fixed on this 32 bottoms, cabin with a connecting rod 51.This empennage 50 is subjected to the effect of wind-force, makes this windmill 20 and above-mentioned cabin 32 turn on the effectively direction of wind-engaging.
The design of above-mentioned empennage 50 makes this cabin 32 and windmill 20 become the mechanism of a wind-engaging rotation, and this makes the transmission pressure 34 of above-mentioned generator face the problem of kinking, therefore utilizes this carbon brush slip-ring combining unit 40 to solve.Carbon brush 41 in this carbon brush slip-ring combining unit 40 is connected with the transmission pressure 34 of generator 30,42 pivots of copper ring are enclosed within outside the stationary axle 43, this cabin 32 can be around these stationary axle 43 rotations, carbon brush 41 produces fixing relation with connector 44 and cabin 32, the carbon brush 41 that rotates along with cabin 32 contacts with the copper ring of fixing 42, and copper ring 42 is given in electric energy transmission, and copper ring 42 connects transmission pressure 45 in addition, and this transmission pressure 45 penetrates in this stationary axle 43 and extends outward outside the cabin 32.So, no matter cabin 32 rotations how, this transmission pressure 45 is neither influenced, no kinking problem.
The utility model windmill 20, its impeller 21 is disc structures, and its periphery is established the trip edge 23 that a thickness is thinner than this disc thickness, and establish for 22 groups for above-mentioned unit blade this trip edge 23.This unit blade 22 is provided with an engaging groove 24 with the end of these trip edge 23 combinations, and this trip edge 23 embeds in this engaging groove 24, and with plurality of fixed element 25 this unit blade 22 is fixed on this trip edge 23.
Characteristics and effect
The utility model wind-driven generator belongs to the internal rotor type wind-driven generator
Wind-driven generator of the present utility model as shown in the figure, it is the generating structure of rotor in the stator interior rotation as can be known, so the utility model system belongs to the internal rotor type wind-driven generator.With J=1/4GD 2Relation is analyzed, and can demonstrate,prove root diameter decision rotor inertia, the root diameter little person of healing, and rotor inertia is littler, starts more easily.So the root diameter of internal rotor type generator is less than the root diameter of outward rotation type, so the utility model adopts the internal rotor type generator to have the advantage of easy starting.
The utility model windmill can be promoted wind energy utilization, starts in the wind environment of low wind speed
Windmill of the present utility model, six unit blades that comprised discoid impeller and be incorporated into this impeller edge.The area of a circle radius that windmill scans is the sum total of an impeller radius and a unit length of blade.By as can be known graphic, impeller radius and unit length of blade occupy this separately and scan the suitable ratio of area of a circle radius, and the swept area of windmill is made of jointly impeller and unit blade, and the wind-engaging structure of windmill is this unit blade.The number of acquisition wind energy is directly proportional with the area of windmill wind-engaging, and the utility model increases the swept area of this windmill with large diameter impeller, so can promote wind energy utilization.Moreover the unit blade of the utility model windmill is the wide plate formula, the area wind-engaging of each unit blade to enlarge, and blowing area increases, and the wind energy utilization of windmill is promoted again.And the unit blade is to be combined in impeller periphery with six leaves, cooperate the wide plate area with leafy kenel, make and keep a suitable wind-engaging distance between each unit blade, this is apart from keeping good gas fluidity, most wind-force is acted on impeller and the unit blade, from the space, pass and lose the wind energy of not utilizing and reduce, so increased wind energy utilization.Under impeller and the complementary effect of unit blade, windmill of the present utility model can significantly promote wind energy utilization, so can realize the run up purpose of windmill of low wind speed.
Windmill of the present utility model has the enhancement effect of steady running
The utility model constitutes the radius of windmill swept area with the sum total of an impeller radius and a unit length of blade, say and drawing of the present utility model is represented that just as epimere impeller radius and unit length of blade occupy the significant proportion of this swept area radius separately.In other words, impeller of the present utility model is for whole windmill, it is the structure of a large size ratio, impeller constitutes the center of mass of windmill, makes it have stable center of gravity, when the windmill wind-engaging rotates, the play stably function of center of gravity of this impeller, make the rotation that windmill can be stable, reduce the situation of rocking, relative rotation noise can significantly reduce.And according to structural mechanics, wide plate type unit blade can show preferable strong structure intensity, and wind-engaging is not flexible or rock wind cutting that therefore can be stable.The utility model windmill has the impeller of stable center of gravity and the unit blade of stable wind cutting, therefore has the enhancement effect of steady running.
Though the utility model is emphasized large-area impeller, the impeller quality also has its necessity of considering, in order to avoid the situation of the excessive excessive starting difficulty of inertia of deriving on the contrary of impeller rest mass.Under the condition with same diameter and same unit blade, be that the impeller of 2kg, 1.3kg and 0.8kg hangs down wind-force starting experiment to weight respectively, 1.3kg impeller can obtain the low starting wind velocity of an expection, 2kg then must could start with the wind-force greater than the expection starting wind velocity, does not meet the expectation that low wind speed starts.And the starting wind velocity of 0.8kg is bigger than 1.3kg on the contrary, the reduction that because rest mass diminishes starting wind velocity is directly proportional.So the impeller with 1.3kg in this laboratory data shows as preferable.
The utility model generator has the characteristic of low rotor inertia and low cogging torque.
The utility model is adopted permanent magnet generator, and whether permanent-magnetic wind driven generator is activated easily, and except windmill structure, the rotor inertia of generator and cogging torque also are one of determinant factors.
About rotor inertia, with J=1/4GD 2Relation is analyzed (G is rotor weight (KG), and D is root diameter (m)), can demonstrate,prove root diameter decision rotor inertia, the cylindrical rotor of identical weight, the root diameter little person of healing, and rotor inertia is littler, starts more easily.The root diameter that the utility model is set generator is 32mm, and magnet is adopted 3mm thickness, total length 99mm.Derive according to above-mentioned rotor inertia formula, the utility model generator has the characteristic of low rotor inertia as can be known, and generator itself is started easily, and the load that low inertia rotor alleviates windmill makes windmill be easier to the wind-engaging starting.
About cogging torque, described in prior art one hurdle, the rotor of permanent magnet generator or motor has a kind of trend of aliging with stator along a certain specific direction, and trend can produce a kind of vibration torque thus, is called cogging torque or cogging torque (cogging torgue).For magneto, cogging torque has direct influence power to the initiating wind speed of windmill rotation, and the generator of high cogging torque has pause point, and produces the problem that low wind speed runs up and has some setbacks.The solution that this problem of viewpoint of alignment trend is arranged with the magnetic line of force, the structure of integer groove is easy to generate the situation of rotor magnet and the alignment of stator slot tooth, promptly at a certain special angle, the induction of magnet and groove tooth produces maximum magnetic flux chain, cause a steady state force balance, therefore a commentaries on classics can take place when rotating.Therefore, reduce one of mode of changeing, system can reduce the drop of induction magnetic flux chain, its means can adopt the mode of fractional-slot, reduce the chance that aligns of magnet and groove tooth, also can painstakingly improve the least common multiple of number of poles and groove number, 8 utmost points, 9 grooves for example, can learn that divided by the least common multiple of number of magnetic poles and number of stator slots the cycle of 8 utmost points, 9 grooves is 5 degree with 360 space angles of spending, a mechanical angle that changes is little, and a commentaries on classics situation obtains obviously to improve.
The characteristic of low inertia rotor of the utility model generating facility and low cogging torque, the load that can alleviate windmill makes windmill and generator have the advantage of easy starting.
The utility model belongs to the wind-driven generator of light breeze starting type
With the windmill cooperation low rotor inertia of promoting wind energy utilization, the generator of low cogging torque, the utility model can be started under the wind environment of low wind speed.Because the starting wind velocity of Rutland 913 types of Britain Marlec company is below 2.5m/s, model structure of the present utility model is better than the former, so estimate starting wind velocity below 2m/s, belongs to the light breeze starting.And the starting wind velocity of known low wind-driven generator belongs to the wind-driven generator of gentle breeze starting about about 3～4m/s.Can illustrate that thus the wind-driven generator of the more known low wind-force starting of starting wind velocity of the present utility model is lower, the place that therefore wind-driven generator is set no longer is only limited to the good area of wind, and the degrees of freedom of ground point selection is higher.
The utility model wind-driven generator can make the rear end utilize the expense of the renewable sources of energy to be lowered
The utility model wind-driven generator is adopted the above high voltage-rated output of three-phase 80V, is converted to the Ac or the direct current of specific low voltage again through rear end converting system (transformer, rectifier).According to the relation of P (power)=I (electric current) * V (voltage) as can be known, when power was identical, voltage was high more, and electric current is low more; And the transmission line capability of circuit is directly proportional with voltage squared, supposes that voltage doubles, and then transmission line capability increases to original four times.So for identical transmission line capability, high voltage only needs less electric current, according to V (voltage)=I (electric current) * R (resistance) relation as can be known, when resistance is fixed, electric current reduces, the voltage drop that produces on the elastic cable paper (loss of voltage) also reduces, according to P (heating power or copper loss)=I 2(current squaring) * R (resistance) relation as can be known, electric current reduce represent electric power in the process of transmission because the and then reduction of heat producing losses that elastic cable paper resistance is produced or copper loss.Therefore the utility model wind-driven generator has the transmission of electricity characteristic that voltage drop is little, copper loss is little, thermal loss is little.
And the wind-driven generator of high voltage-rated output can utilize the means of changing rear end converting system (transformer, rectifier) to do with the accumulating system of dealing with the rear end or the specific voltage of powering consume system.Briefly, one typhoon power generator just can be joined the accumulating system that should be different or the consume system of powering, difference only is the change of rear end converting system (transformer, rectifier), this change is enforcement and with low cost easily, so, the building to be set to originally of wind-power electricity generation significantly reduced, and makes the rear end utilize the expense of the renewable sources of energy to be lowered, and meets economic benefit.
The narration of comprehensive above relevant hardware structure and effect characteristic, the utility model has really been broken through the stereotype of conventional version wind-driven generator as can be known, and represent the novel kenel and the effect of multiple progress, can demonstrate,prove the utility model and really be one and have the wind generator set of practicability, though the utility model is to do explanation with a most preferred embodiment in graphic, is skillful in this skill person and can makes various multi-form changes not breaking away under the utility model spirit and the category.Above illustrated embodiment is only in order to explanation the utility model, and is non-in order to limit scope of the present utility model.Such as do not disobey various modifications or the variation that the utility model spirit is engaged in, all belong to the utility model claim.

Claims (8)

1. the one kind low internal rotor type wind-driven generator that wind speed starts comprises a windmill (20), a generator (30), a carbon brush slip-ring combining unit (40) and an empennage (50); The unit blade (22) that this windmill mainly comprises an impeller (21) and is mounted on this impeller (21) periphery; This generator comprises the rotor (31) that is used to accept the mechanical energy that this impeller (21) transmitted and produces electric energy, and it is connected with this impeller (21); This carbon brush slip-ring combining unit (40) is connected with the transmission pressure (34) of this generator (30); This generator (30) and this carbon brush slip-ring combining unit (40) are arranged in the cabin (32); This empennage (50) comprises a connecting rod (51), and it is connected and fixed on bottom, this cabin (32); It is characterized in that:
Above-mentioned impeller (21) is a disc structure, and its periphery is established a trip edge (23) that supplies above-mentioned unit blade (22) group to establish; This unit blade (22) is provided with an engaging groove (24) with the end of this trip edge (23) combination, and this trip edge (23) embed in this engaging groove (24), and this unit blade (22) has plurality of fixed element (25), and is fixed on this trip edge (23);
The diameter of this impeller (21) accounts for more than 1/2nd of this unit blade (22) length;
Said units blade (22) is tabular, and has the above quantity of five leaves, and its ground, equispaced group is located on the trip edge (23) of this impeller (21).
2. the internal rotor type wind-driven generator that low according to claim 1 wind speed starts is characterized in that this unit blade (22) is the quantity of six leaves, and its ground, equispaced group is located on the trip edge (23) of this impeller (21).
3. the internal rotor type wind-driven generator that low according to claim 1 wind speed starts is characterized in that above-mentioned generator (30) is a low rotor inertia generator.
4. the internal rotor type wind-driven generator that low according to claim 1 wind speed starts is characterized in that above-mentioned generator (30) is the generator of low cogging torque.
5. the internal rotor type wind-driven generator that low according to claim 1 wind speed starts is characterized in that this wind-driven generator is a three-phase 80v voltage output type generator.
6. the internal rotor type wind-driven generator that starts as low wind speed as described in the claim 5 is characterized in that, this wind-driven generator comprises that more one is used for rear end converting system that the output voltage of this wind-driven generator is adjusted.
7. the internal rotor type wind-driven generator that starts as low wind speed as described in the claim 6 is characterized in that this rear end converting system is a transformer.
8. the internal rotor type wind-driven generator that starts as low wind speed as described in the claim 7 is characterized in that this rear end converting system also comprises a rectifier.
CNU2007201409853U 2007-04-03 2007-04-03 Inner rotor type aerogenerator starting with low wind velocity Expired - Lifetime CN201043512Y (en)

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CN101843983B (en) * 2009-03-24 2012-04-11 智高实业股份有限公司 Impeller-type building block assembly
CN103348131A (en) * 2010-12-10 2013-10-09 维斯塔斯风力系统集团公司 A method of operating a wind turbine as well as a system suitable therefore
CN103545820A (en) * 2013-09-24 2014-01-29 南车株洲电力机车研究所有限公司 Method for improving reliability of power device of doubly-fed wind-electricity converter
GB2550605A (en) * 2016-05-23 2017-11-29 Chambers David A joint comprising an interface enabling structural continuity between joining intersecting
JP2022042456A (en) * 2020-09-02 2022-03-14 利愛電氣股▲分▼有限公司 Generator having outer rotor structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101843983B (en) * 2009-03-24 2012-04-11 智高实业股份有限公司 Impeller-type building block assembly
CN103348131A (en) * 2010-12-10 2013-10-09 维斯塔斯风力系统集团公司 A method of operating a wind turbine as well as a system suitable therefore
CN103348131B (en) * 2010-12-10 2016-06-01 维斯塔斯风力系统集团公司 The method operating wind turbine and the system adapted to it
CN103545820A (en) * 2013-09-24 2014-01-29 南车株洲电力机车研究所有限公司 Method for improving reliability of power device of doubly-fed wind-electricity converter
GB2550605A (en) * 2016-05-23 2017-11-29 Chambers David A joint comprising an interface enabling structural continuity between joining intersecting
GB2550605B (en) * 2016-05-23 2022-05-11 Chambers David A joint comprising an interface enabling structural continuity between joining intersecting members manufactured using composite materials
JP2022042456A (en) * 2020-09-02 2022-03-14 利愛電氣股▲分▼有限公司 Generator having outer rotor structure

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