CN102162430B - New-type wind power generation all-in-one machine and side slope detecting system based thereon - Google Patents
New-type wind power generation all-in-one machine and side slope detecting system based thereon Download PDFInfo
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- CN102162430B CN102162430B CN 201110080178 CN201110080178A CN102162430B CN 102162430 B CN102162430 B CN 102162430B CN 201110080178 CN201110080178 CN 201110080178 CN 201110080178 A CN201110080178 A CN 201110080178A CN 102162430 B CN102162430 B CN 102162430B
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- 239000000463 material Substances 0.000 claims abstract description 12
- 241000883990 Flabellum Species 0.000 claims description 42
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- 230000004907 flux Effects 0.000 description 16
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- 229910052744 lithium Inorganic materials 0.000 description 5
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- 230000005347 demagnetization Effects 0.000 description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 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
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- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
A new-type wind power generation all-in-one machine comprises a vertical shaft fan, the shaft of which is arranged between an upper fan cover and a lower fan pedestal. Square columns made of permanent magnet materials are arranged between the fan cover and the fan pedestal on four corners, wherein one end near the fan cover is N pole, and one end near the fan pedestal is S pole. The fan cover, the fan pedestal and the vertical shaft fan are all made of soft magnet materials, a plurality of grooves embedded with coils are arranged at the inner sides of the fan cover and the fan pedestal, and the upper end and the lower end of a fan blade are respectively provided with a fan blade upper edge and a fan blade lower edge. Air gaps are arranged respectively between the fan cover and the fan blade upper edge, and the fan pedestal and the fan blade lower edge. The N pole of the square column, the fan cover, the air gap between the fan cover and the fan blade upper edge, the fan blade, the air gap between the fan blade lower edge and the fan pedestal, the fan pedestal and the S pole of the square column can form a closed main magnetic circuit. The wind power generation all-in-one machine can be placed beside express way to monitor landslides on two sides of the express way with wind power generation provided by traveling airflow.
Description
Technical field
The present invention relates to a kind of wind generator all-in-one machine, be particularly suitable for the wind generator all-in-one machine into the power supply of expressway slope detection node.
Background technique
Along with the development of wireless sensor network and Internet of Things, the powerup issue of distributed node becomes a difficult problem.What use was more at present is battery, but the electric weight of battery is limited, and battery life becomes the bottleneck in node life-span; The secondary pollution that the chemical cell that the while node carries causes certainly will become the significant threat of environment.Therefore, utilize the realization renewable energy sources to become an important research topic for the distributed node power supply.
The wind energy that the present invention pays close attention in the renewable energy sources is the distributed node power supply.To some objects that moves at a relatively high speed, such as flying bird and automobile etc., can utilize and depend on wind generating unit on it and provide stable wind regime for the distributed node that is used for scientific research or follows the tracks of investigation.A kind of situation of the present invention's imagination is the landslide on monitoring expressway limit.Mountainous area highway is faced with the danger of landslide.Small wind-driven generator is installed on the expressway limit, and the air-flow when high speed traveling moves by driving higher speed promotes wind generating unit work, carries out the landslide for the power supply of slope monitoring node and detects.
The tradition wind generating unit is comprised of fan, speed changer and generator usually.For example patent of invention 200680021096.3, and drive rotating shaft by fan and rotate, and by generating electricity with generator behind the planetary gear speed-changing.Patent of invention 200680016461.1 is installed in vertical axis fan on 3 ring structurees for another example, ring rotation and drive alternator generation during the fan rotation.Its purposes of traditional wind-driven generator generally provides electric power, even can generate electricity by way of merging two or more grid systems, and its volume is generally also larger.And general power consumption is less in wireless sensor node and distributed mini system, also requires the small volume of power supply system, is that wireless sensor network and distributed mini system are powered so traditional wind is not suitable for being grafted directly to.
Can consider fan and generator are integrated for the miniaturization that realizes wind generating unit, become wind generator all-in-one machine.Patent of invention 201010118580.6 or utility model patent 201020125286.3 have designed a kind of wind generator all-in-one machine with belt coil flabellum; Patent of invention 201010119356.9 or utility model patent 201020125302.9 have designed a kind of wind power-generation integrated machine with soft magnetic fan-leaf; Patent of invention 201010119339.5 or utility model patent 201020125290.X have designed a kind of permanent-magnet fan blade and wind power generation integrated machine; Patent of invention 201010119337.6 or utility model patent 201020125288.2 have designed a kind of wind generator all-in-one machine.But above-mentioned wind generator all-in-one machine processing and fabricating is difficulty comparatively.The first, all above-mentioned wind generator all-in-one machines all have plastic casing, need special die sinking manufacturing.The second, except permanent-magnet fan blade and wind power generation integrated machine, other wind generator all-in-one machines need at fan lid and fan seat permanent magnet to be installed, and structure is not compact.The 3rd, permanent-magnet fan blade and wind power generation integrated machine requires to make fan with permanent-magnet material, the processing and forming technology difficulty, and difficulty magnetizes after the moulding.The 4th, the wind power-generation integrated machine with soft magnetic fan-leaf of patent of invention 201010119356.9 or utility model patent 201020125302.9 has conducting magnetic component, and structure is not compact.The 5th, the wind generator all-in-one machine of the belt coil flabellum in patent of invention 201010118580.6 or the utility model patent 201020125286.3, blade structure are too complicated, and permanent magnet is made difficult.The 6th, the wind generator all-in-one machine in patent of invention 201010119337.6 or the utility model patent 201020125288.2, the permanent magnet difficult forming, installation requirement is high.
In sum, need that a kind of size of design is little, compact structure, the wind generator all-in-one machine being convenient to make, and be applied to utilize the driving air-flow to carry out the expressway slope monitoring system.
Summary of the invention
The present invention will provide that a kind of size is little, compact structure, the wind generator all-in-one machine being convenient to make, and utilize the driving air-flow to provide than strong wind and generating for the wind generator all-in-one machine of arranging the expressway limit, be the power supply of expressway slope detection system, prevent that the landslide from causing serious disaster to turnpike driving.
Wind generator all-in-one machine, it is characterized in that: comprise a vertical axis fan, the axle of described vertical axis fan is arranged between the fan seat of the fan lid on top and bottom, between four jiaos of described fan lid and the fan seats square cylinder is installed all, described square cylinder is permanent magnet material, it is the N utmost point near fan lid end, and it is the S utmost point near fan seat end; Described square cylinder is arranged with the sheath of nonmagnetic substance outward; The flabellum of described fan lid, fan seat and vertical axis fan all is soft magnet materials; The inboard of described fan lid and fan seat respectively has several grooves, is provided with coil in the described groove; The upper/lower terminal of the flabellum of described vertical axis fan is respectively equipped with flabellum upper limb, flabellum lower edge; Described fan lid, fan seat have air gap respectively and between the flabellum upper limb, flabellum lower edge, the N on the described square cylinder is extreme, the air gap between the air gap between fan lid, fan lid and the flabellum upper limb, flabellum, flabellum lower edge and the fan seat, fan, N that the S on the square cylinder extremely returns on the square cylinder extremely can form several closed main magnetic circuits.
Further, described square cylinder is fixed between fan lid and the fan seat by nuts and bolt.
Side slope detecting system based on foregoing invention, it is characterized in that: comprise that the wind energy that the turnpike driving air-flow is formed converts the wind generator all-in-one machine of electric energy to, the output terminal of described wind generator all-in-one machine is connected with the voltage transitions memory circuit, and described voltage transitions memory circuit is used for converting Ac to direct current and storage of electrical energy; The output terminal of described voltage transitions memory circuit is connected with the information physical network nodes and provides power supply for it; Described information physical network nodes comprises sensor detection circuit and single-chip microprocessor, and described sensor detection circuit is used for gathering the landslide situation of expressway both sides, and described single-chip microprocessor is used for the information that collects is sent to operating console.
Further, described voltage transitions memory circuit comprises current rectifying and wave filtering circuit, decompression voltage regulator, the battery charger that connects successively.
Main flux was constant when wind generator all-in-one machine of the present invention rotated when fan, but the magnetic flux in the coil constantly changes along with the rotation of fan.When the area that turns to coil when flabellum overlapped with the area of flabellum lower edge or flabellum upper limb, it is maximum that the magnetic flux in the coil reaches.According to Lenz's law, in the large process of this coil flux quantitative change, it produces counterclockwise Ac; In the little process of this coil flux quantitative change, produce clockwise Ac.Obviously, can produce alternating voltage in each coil.Suppose that vertical axis fan has 6 flabellums, be equipped with 6 coils on fan lid and the fan seat, when vertical axis fan rotates, the coil on inswept each fan lid that 6 flabellums go round and begin again, fan, if coil connects by rights, the alternating voltage that produces so will be 12 times of single coil.
Side slope detecting system based on wind generator all-in-one machine of the present invention, its principle is by wind generator all-in-one machine wind energy to be converted the wind energy that galloping forms to electric energy, convert thereof into VDC by current rectifying and wave filtering circuit again, and play the effect of voltage stabilizing.By a battery charger lithium cell is charged again, make it to become the power supply of this detection system.System passes through the landslide situation that the sensors such as fiber bragg grating, inclination gather the expressway both sides, and by the transmitting module of single-chip microprocessor signal is sent to operating console.Operating console is presented at it on the display screen of expressway to remind the vehicle of back again by literal.
Adopted vertical axis fan among the present invention, vertical axis fan can utilize the wind energy of all directions, simultaneously so that freer on the mounting point of this device, direction and the precision.
The electromotive force that wind generating unit produces should not be excessively low, otherwise the enough energy can not be provided for the circuit of generator back; And from the principle of generator, singly wish that for producing higher electromotive force electricity generating device has the rotational speed of large-size or rotor higher with regard to electricity generating device.Higher or the moving object speed of rotary speed of rotator high request nature wind speed, all factor that can intervene of non-electricity generating device itself; But fan and electricity generating device integrated makes the electricity generating device size relatively reach it can be reached at utmost, thereby improves the electromotive force that produces.
In sum, beneficial effect of the present invention has:
1. fan and electricity generating device is integrated, simple and compact for structure, without curve and surface, take into full account and make simply, volume is little;
2. realize largely component reusage, the permanent magnetism square cylinder that is easy to make is simultaneously as structural posts, and fan lid, fan seat and flabellum are made by soft magnetic material, and the existing structure function has again the magnetic conduction function;
Fan and electricity generating device integrated after, its size effect is conducive to improve electricity generating device usefulness;
4. can form the closed main magnetic circuit with small air gap in the device, main magnetic circuit total magnetic flux variable quantity is large, and energy conversion rate is high;
5. one aspect of the present invention is utilized renewable energy sources, can energy saving; Can reduce in a large number use battery, protection of the environment on the other hand.
Description of drawings
Fig. 1 is that master of the present invention looks sectional view.
Fig. 2 is that of the present invention overlooking partly cutd open figure.
Fig. 3 is the sectional elevation of flabellum of the present invention.
Fig. 4 is based on side slope detecting system block diagram of the present invention.
Fig. 5 is the circuit diagram based on side slope detecting system of the present invention.
Fig. 6 is the demagnetization curve schematic representation of square cylinder of the present invention.
Embodiment
Embodiment one
With reference to Fig. 1-3, wind generator all-in-one machine, comprise a vertical axis fan 6, the axle 5 of described vertical axis fan 6 is arranged between the fan seat 1 of the fan lid 3 on top and bottom, between 1 four jiaos of described fan lid 3 and the fan seats square cylinder 2 is installed all, described square cylinder 2 is permanent magnet materials, and it covers 3 ends near fan is N utmost points, and it is the S utmost point near fan seat 1 end; The described square cylinder 2 outer sheaths 9 that are arranged with nonmagnetic substance; The flabellum 8 of described fan lid 3, fan seat 1 and vertical axis fan 6 all is soft magnet materials; The inboard of described fan lid 3 and fan seat 1 respectively has several grooves, is provided with coil 7 in the described groove; The upper/lower terminal of the flabellum 8 of described vertical axis fan 7 is respectively equipped with flabellum upper limb, flabellum lower edge; Described fan lid 3, fan seat 1 have air gap respectively and between the flabellum upper limb, flabellum lower edge, the N on the described square cylinder 2 is extreme, fan cover 3, fan cover 3 with the flabellum upper limb between air gap, flabellum 8, flabellum lower edge and fan a air gap between 1, fan 1, N that S on the square cylinder 2 extremely returns on the square cylinder 2 extremely can form several closed main magnetic circuits.
Described square cylinder 2 by nuts and bolt 4 be fixed on fan cover 3 and fan 1 between.
Main flux was constant when wind generator all-in-one machine of the present invention rotated when fan, but the magnetic flux in the coil 7 constantly changes along with the rotation of fan.When the area that turns to coil 7 when flabellum 8 overlapped with the area of flabellum lower edge or flabellum upper limb, it is maximum that the magnetic flux in the coil 7 reaches.According to Lenz's law, in the large process of these coil 7 magnetic flux quantitative changes, it produces counterclockwise Ac; In the process that these coil 7 magnetic flux diminish, produce clockwise Ac.Obviously, can produce alternating voltage in each coil 7.Suppose that vertical axis fan 6 has 6 flabellums, fan cover 3 and fan 1 on be equipped with 6 coils 7, when vertical axis fan 6 rotates, inswept each fan that 6 flabellums 8 go round and begin again cover 3, the coil 7 on the fan 1, if coil 7 connects by rights, the alternating voltage that produces so will be 12 times of single coil 7.
Adopted vertical axis fan among the present invention, vertical axis fan can utilize the wind energy of all directions, simultaneously so that freer on the mounting point of this device, direction and the precision.
The electromotive force that wind generating unit produces should not be excessively low, otherwise the enough energy can not be provided for the circuit of generator back; And from the principle of generator, singly wish that for producing higher electromotive force electricity generating device has the rotational speed of large-size or rotor higher with regard to electricity generating device.Higher or the moving object speed of rotary speed of rotator high request nature wind speed, all factor that can intervene of non-electricity generating device itself; But fan and electricity generating device integrated makes the electricity generating device size relatively reach it can be reached at utmost, thereby improves the electromotive force that produces.
Embodiment two
With reference to Fig. 4, side slope detecting system based on wind generator all-in-one machine, comprise that the wind energy that the turnpike driving air-flow is formed converts the wind generator all-in-one machine 10 of electric energy to, the output terminal of described wind generator all-in-one machine 10 is connected with voltage transitions memory circuit 11, and described voltage transitions memory circuit 11 is used for converting Ac to direct current and storage of electrical energy; The output terminal of described voltage transitions memory circuit 11 is connected with information physical network nodes 12 and provides power supply for it; Described information physical network nodes 12 comprises sensor detection circuit 121 and single-chip microprocessor 122, described sensor detection circuit 121 is used for gathering the landslide situation of expressway both sides, and described single-chip microprocessor 122 is used for the information that collects is sent to operating console.
Described voltage transitions memory circuit 11 comprises current rectifying and wave filtering circuit 111, decompression voltage regulator 112, the battery charger 113 that connects successively.
Side slope detecting system based on wind generator all-in-one machine of the present invention, to be wind energy that galloping is formed convert wind energy to electric energy by wind generator all-in-one machine 10 to its principle, convert thereof into VDC by current rectifying and wave filtering circuit 111 again, and play the effect of voltage stabilizing.Charge by 113 pairs of lithium celies of a battery charger again, make it to become the power supply of this detection system.System passes through the landslide situation that the sensors such as fiber bragg grating, inclination gather the expressway both sides, and by the transmitting module of single-chip microprocessor 122 signal is sent to operating console.Operating console is presented at it on the display screen of expressway to remind the vehicle of back again by literal.
With reference to Fig. 5, current rectifying and wave filtering circuit forms full-bridge rectifier by 4 rectification diode D1, D2, D3, D4, and inductance L 1 and filter capacitor C1, C2 form, and it becomes the Ac that wind-driven generator produces into direct current and filtering noise.The advantage of this rectifying and wave-filtering integrated inductor low ripple voltage and the high advantage of capacitance load is also arranged.
As can be seen from Figure 5 at the positive half period of power supply, T1 level upper end of transformer be for just, and the lower end is for negative, commutation diode D1 and D4 conducting, and electric current is got back to T1 time grade of lower end of transformer by T1 level upper end of transformer process D1, D4, C1 and C2; When the power-half cycle, T1 level lower end be for just, and the upper end is for negative, commutation diode D2 and D3 conducting, and electric current is got back on T1 time grade in the transformer through D1, D4, C1 and C2 by T1 level of transformer lower end.
Mu balanced circuit is by linear voltage regulator MAX5091, and resistance R 1, R2 and shunt capacitance C3, C4, C5 form.The MAX5091 input voltage range is 5V～28V, and typical output voltage is 5V, and shunt capacitance C5 is the ceramic condenser of 10 μ F.This chip design the power down preventing function, work as V
SiVoltage is lower than reference voltage V
StThe time, the SI pin can be dragged down to protect chip.Welded large solder joint at utmost to increase heat radiation at the circuit board ground level.
Lithium cell group charging circuit is by lithium cell linear-charging managing chip BQ2057, resistance R 5, R6, R7, R8, R9, and light emitting diode D5, PNP transistor Q1 and lithium cell group form.BQ2057 gallon pin SNS calculates the electric current of battery by the voltage that detects external resistance R 5.Voltage detecting pin BAT directly receives the positive pole of battery.Temperature detection pin TS has forbidden the battery temperature measuring ability by R8 after the R9 dividing potential drop.We can know three kinds of states of charging by light emitting diode D5: temperature fault and sleep pattern are finished in charging.Charging control pin CC can the tracing source output port, drives external transistor Q1 and regulates current/voltage.
Crystal oscillator X1 and X2 can provide the clock cycle for system-on-a-chip CC430.When it is in receptive pattern, two pins of RF_P and RF_N can be used for accepting wireless signal, and when it is in sending mode, and two pins of RF_P and RF_N can be used for sending wireless signal, its transmit frequency band is 300MHz～348MHz, 389MHz～464MHz and 779MHz～928MHz.
Sensor S1 comprises inclination sensor and fiber-optic grating sensor, and it can effectively detect landslide and size thereof, timely and effectively for control centre provides corresponding information, so that the disaster infringement is reduced to minimum.
Concrete application examples
Square cylinder has adopted the more cheap ferrite permanent-magnet materials Y35 of price.Fig. 6 is permanent-magnet material Y35 demagnetization curve schematic representation.Such as Fig. 6, choose B
d=0.31T makes to be parallel to horizontal line friendship permanent-magnet material Y35 demagnetization curve and the D point of H axle, uses H
dThe abscissa of expression D is used H
dThe y coordinate of expression D.H
dThe magnetic intensity of expression point D, H
d=81.84kA/m represents the Magnetic flux density of a D.By observing Fig. 4, be easy to obtain H from demagnetization curve
d=81.84kA/m and B
d=0.31T.
According to magnetomotive force conservation and magnetic flux conservation in main magnetic circuit, obtain following equation
B wherein
pThe Magnetic flux density of square cylinder, H
p(B
p) be the magnetic intensity of square cylinder, δ is the length of each square cylinder.Suppose that two air gaps in each magnetic circuit are the same, and its width is δ.Air-gap permeance μ
0=4 π * 10
-7H/m, A
pBe the sectional area of cylinder 3, r and R are respectively its internal diameter and external diameters.From formula (1), can draw the equation of the dimensional parameters of wind generator all-in-one machine, as follows:
Choose width of air gap δ=1mm, suppose R=30mm, r=10mm, A
p=64mm
2, the length l ≈ 20mm of square cylinder.In this case, can be regarded as out the Magnetic flux density B of air gap
g=0.0815T.
The minimum value that the diameter of the closed traverse enamel insulated round copper wire of each coil of wind generator all-in-one machine is taken as in the standard measure is 0.015mm, groove part width and the degree of depth of getting coil on the permanent magnet are respectively 0.9mm, are N=2500 so can establish the number of turn that distributes in the groove.
In order to simplify amount of calculation, suppose in the uniform rotation of expressway fan, and rotating speed is ω=6 π rad/s that namely per second turns 3 circles.The fan 2 π rad that whenever turn around, the variable quantity of each coil total magnetic flux is B
g(π R
2-π r
2), establishing the outer radius R=30mm of annular permanent magnnet cross section annulus, inside radius r=10mm, magnetic induction intensity are B
g=0.0815T, at this moment the induction electromotive force of each coil generation is
Because the number of stitches on fan lid, the fan seat is identical with the flabellum number, and quantity is 6.So the induction electromotive force that finally produces from fan is ε=12 ε
i=18.5V.Be 1.2 times of input voltage ε by the output voltage U behind the current rectifying and wave filtering circuit, i.e. U=1.2 ε=22.2V.The input voltage of MAX5091 chip is 5～28V, so output voltage satisfies the condition of landslide detection system input voltage.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches in those skilled in the art conceives the equivalent technologies means that can expect according to the present invention.
Claims (4)
1. wind generator all-in-one machine, it is characterized in that: comprise a vertical axis fan, the axle of described vertical axis fan is arranged between the fan seat of the fan lid on top and bottom, between four jiaos of described fan lid and the fan seats square cylinder is installed all, described square cylinder is permanent magnet material, it is the N utmost point near fan lid end, and it is the S utmost point near fan seat end; Described square cylinder is arranged with the sheath of nonmagnetic substance outward; The flabellum of described fan lid, fan seat and vertical axis fan all is soft magnet materials; The inboard of described fan lid and fan seat respectively has several grooves, is provided with coil in the described groove; The upper/lower terminal of the flabellum of described vertical axis fan is respectively equipped with flabellum upper limb, flabellum lower edge; Described fan lid, fan seat have air gap respectively and between the flabellum upper limb, flabellum lower edge, the N on the described square cylinder is extreme, the air gap between the air gap between fan lid, fan lid and the flabellum upper limb, flabellum, flabellum lower edge and the fan seat, fan, N that the S on the square cylinder extremely returns on the square cylinder extremely can form several closed main magnetic circuits.
2. wind generator all-in-one machine according to claim 1 is characterized in that: described square cylinder is fixed between fan lid and the fan seat by nuts and bolt.
3. based on the side slope detecting system of wind generator all-in-one machine claimed in claim 1, it is characterized in that: comprise that the wind energy that the turnpike driving air-flow is formed converts the wind generator all-in-one machine of electric energy to, the output terminal of described wind generator all-in-one machine is connected with the voltage transitions memory circuit, and described voltage transitions memory circuit is used for converting Ac to direct current and storage of electrical energy; The output terminal of described voltage transitions memory circuit is connected with the information physical network nodes and provides power supply for it; Described information physical network nodes comprises sensor detection circuit and single-chip microprocessor, and described sensor detection circuit is used for gathering the landslide situation of expressway both sides, and described single-chip microprocessor is used for the information that collects is sent to operating console.
4. side slope detecting system according to claim 3 is characterized in that: described voltage transitions memory circuit comprises current rectifying and wave filtering circuit, decompression voltage regulator, the battery charger that connects successively.
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| CN 201110080178 CN102162430B (en) | 2011-03-31 | 2011-03-31 | New-type wind power generation all-in-one machine and side slope detecting system based thereon |
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| CN 201110080178 CN102162430B (en) | 2011-03-31 | 2011-03-31 | New-type wind power generation all-in-one machine and side slope detecting system based thereon |
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| CN102926937A (en) * | 2012-11-14 | 2013-02-13 | 天津市翔晟远电力设备实业有限公司 | Field device for obtaining energy from wind power |
| CN103887867A (en) * | 2014-03-28 | 2014-06-25 | 国网节能服务有限公司 | Method for providing electric power for electricity consumption facilities through expressway wind energy |
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| JPH084647A (en) * | 1994-06-15 | 1996-01-09 | Ryoda Sato | Wind power generation device |
| US7417334B2 (en) * | 2003-07-08 | 2008-08-26 | Shiro Kinpara | Wind power generation system, arrangement of permanent magnets, and electrical power-mechanical force converter |
| CN201221444Y (en) * | 2008-06-12 | 2009-04-15 | 邓锎 | Electric generating apparatus using highway automobile refluence wind |
| CN201269743Y (en) * | 2008-09-11 | 2009-07-08 | 中国地质调查局水文地质环境地质调查中心 | Optical fiber and optical grating sensing device for monitoring land slide slit |
| CN101761457B (en) * | 2010-01-21 | 2011-11-23 | 浙江工业大学 | Wind power-generation integrated machine with soft magnetic fan-leaf |
| CN202047939U (en) * | 2011-03-31 | 2011-11-23 | 浙江工业大学 | Novel wind power generation all-in-one machine and side slope detecting system based on same |
-
2011
- 2011-03-31 CN CN 201110080178 patent/CN102162430B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102162430A (en) | 2011-08-24 |
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