CN104481807A - Wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed - Google Patents
Wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed Download PDFInfo
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- CN104481807A CN104481807A CN201410609727.XA CN201410609727A CN104481807A CN 104481807 A CN104481807 A CN 104481807A CN 201410609727 A CN201410609727 A CN 201410609727A CN 104481807 A CN104481807 A CN 104481807A
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- Prior art keywords
- wind
- piezoelectric cantilever
- wind speed
- rectifying device
- air channel
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- 229910000906 Bronze Inorganic materials 0.000 claims abstract description 5
- 239000002033 PVDF binder Substances 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010974 bronze Substances 0.000 claims abstract description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010409 thin film Substances 0.000 claims abstract description 5
- 210000001624 hip Anatomy 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
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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
Abstract
The invention discloses a self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed. The wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at the low wind speed comprises an intensive air channel, an umbrella-shaped rectifying device, a fan and a triangular piezoelectric cantilever; the umbrella-shaped rectifying device which is installed in the middle of the air channel commonly constrain the wind speed and the wind direction with the intensive air channel; the wind speed after constraint through the intensive air channel and the rectifying device is increased and points to the edge of a fan impeller and accordingly the fan can be started under the low wind speed and the wind kinetic energy is converted to be fan mechanical energy; 3mm coincidence is formed between the fan impeller edge and the cantilever, so that the cantilever can be effectively beat after the fan is started; the cantilever is a bi-crystal piezoelectric cantilever with the phosphor bronze serving as a base plate and the upper surface and the lower surface being accompanied by PVDF (Polyvinylidene Fluoride) thin films; electric energy is generated when the cantilever deforms due to beat by the fan and accordingly the fan mechanical energy is converted to the electric energy.
Description
Technical field
The invention belongs to piezoelectricity wind energy collecting field, relate to then mechanical energy is converted to electric energy by a kind of wind energy energy conversion device to mechanical energy.
Background technique
In recent years, radio sensing network is rapid as a kind of new network development communication technologies, and has been widely used in the every field of productive life, but the power supply technique of wireless sensing node does not still solve, at present still based on needs periodic replacement chemical cell.Piezo-electric generating is the another kind of generation mode except electromagnetic type and chemical formula, has without electromagnetic interference, does not consume primary energy, the advantages such as clean and effective.Wind energy is extensively present in each corner natural as a kind of clean renewable energy sources, and its potential energy is huge.The wind-driven generator be widely used at present generally adopts electromagnetic type to generate electricity, and electromechanical conversion efficiency is low, difficult in maintenance, and cost is higher.Piezoelectricity wind energy collecting technology can be by natural Wind resource change electric energy to drive wireless sensing node, there is larger researching value and application prospect.
Patent 201220330059 discloses a kind of piezoelectric type wind power generation device.It is characterized in that utilizing speed control switch to control ventilation, integration device can make wind-force more even, concentrated.Wind is to electricity generating device subsequently, causes piezoelectric vibrator to vibrate by piezoelectricity carrier, thus reaches the object of generating.Patent 201010519391.X discloses a kind of the piezoelectric energy collection method and the device that utilize wind energy, it adopts wind energy to drive rotating carrier, permanent magnet on rotating carrier produces the repulsion to the fixed magnet on overhang, thus overhang is vibrated, and produces electric energy.The device mentioned in above patent, mechanical structure relative complex, use the materials consumption such as magnet, rotor comparatively large, cost is difficult to control, and in same dimension, increases overhang number the miniaturization of device can be caused to be difficult to realize.The present invention proposes a kind of wind speed can self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed, intensive air channel in device and rectifying device can change wind speed and direction, blower fan in device is used for Wind resource change being the kinetic energy of blower fan on the one hand, be used on the other hand impacting overhang, complete the conversion of mechanical energy to electric energy, make structure more compact simultaneously, reduce space hold.By changing the size of the parts such as blower fan, the size of whole contrive equipment also can be changed flexibly, to adapt to different environment.
Summary of the invention
Technical problem to be solved by this invention is, overcomes prior art defect, provides a kind of wind speed self-regulation and the openable piezoelectricity wind energy collecting method of low wind speed and device.This device comprises intensive air channel, rectifying device, blower fan, piezoelectric cantilever.Described rectifying device and intensive air-duct apparatus have the effect improving blower fan edge wind speed at low wind speeds, thus reduce blower fan unlatching wind speed.The blower fan opened effectively impacts triangle piezoelectric cantilever forces its deformation, thus Wind resource change is the mechanical energy of blower fan and by piezoelectric effect, mechanical energy is converted to electric energy, realizes the low energy-consumption electronic device of far-end or the self-powered of system that arrive difficulty personnel.It is made to regularly replace chemical cell, easy to use, save physical resources and financial resources.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of wind speed self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed, wind from different direction enters intensive air channel, the wind entering intensive air channel is jointly constrained to speed by intensive air channel and rectifying device after feedback air bag regulates rectifying device to be increased and the wind pointing to draught fan impeller edge section, thus blower fan is opened at low wind speeds.
Described intensive air channel is leading portion is horn-like, and rear end is tubulose.Described rectifying device is umbrella, comprise the rib on rectifying device fixed base, flexible membrane, seven supports and seven supports, support and the tapered distribution of rib, flexible membrane is wrapped in outside rib, and it can change the size of rectifying device folding under the control of towing pad.It is the piezoelectric cantilever of substrate that blower fan surrounding is fixed with phosphor bronze, and piezoelectric cantilever adopts twin crystal pattern, up and down respectively with PVDF thin film.Overhang end and overhang fixed base are screwed, and free end has 3mm to overlap with draught fan impeller edge, thus ensure that impeller effectively impacts piezoelectric cantilever when rotated.
The impact of draught fan impeller forces piezoelectric cantilever generation deformation, thus utilizes piezoelectric effect produce electric energy and collect.
In aforesaid wind speed self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed, described piezoelectric cantilever is inner arc limit triangle piezoelectric cantilever, outer arc limit triangle piezoelectric cantilever or quadrantal (spherical) triangle piezoelectric cantilever.Triangle piezoelectric cantilever base, described inner arc limit is straight flange, and two waists are the triangle piezoelectric cantilever of the camber line concaved; Described outer arc limit triangle piezoelectric cantilever is base is straight flange, and two waists are the triangle piezoelectric cantilever of cambered outwards camber line; Described quadrantal (spherical) triangle piezoelectric cantilever is base is straight flange, and two waists are the triangle piezoelectric cantilever of straight flange.Respectively finite element analysis is carried out to described three kinds of overhangs.Described three kinds of piezoelectric cantilevers are bimorph piezo electric overhang.The number of described piezoelectric cantilever is 4.
In aforesaid wind speed self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed, described rectifying device has towing pad at end, and feedback air bag controls towing pad by transmission device, thus controls the size of rectifying device folding.
Beneficial effect of the present invention: compared with prior art, wind energy transformation is mechanical energy by the present invention, is finally converted into electric energy, to realize the self-powered of far-end wireless sensing node.And make the restriction in its not vibrated source, easy-to-use, without the need to again dropping into labour force; Rectifying device can regulate wind speed and direction, and blower fan is opened at a lower wind speed; Can further improve the shape of piezoelectric cantilever, improve wind energy collecting efficiency; Can regulate overhang number and blast fan number, different wind conditions can be adapted to preferably; The present invention also has enforcement compact structure, and materials consumption is few, and cost is low, is easy to the features such as realization, can be low power consuming devices and wireless sensing node is powered.
Accompanying drawing explanation
Fig. 1 is wind speed self-regulation and low wind speed openable piezoelectricity wind-energy collecting device schematic diagram.
Fig. 2 is feedback air bag partial schematic diagram.
Fig. 3 is rectifying device partial schematic diagram.
Fig. 4 is the Finite element analysis results figure of inner arc limit triangle piezoelectric cantilever, outer arc limit triangle piezoelectric cantilever and quadrantal (spherical) triangle piezoelectric cantilever output power under same load.
In figure: 1 fixed support; 2 intensive air channels; 3 feedback air bags; 4 transmission devices; 5 rectifying device mounting brackets; 6 rectifying devices; 7 overhang fitting seats; 8 overhangs; 9 assembling supports; 10 blower fans; 11 intensive air channel fixed supports; 12 towing pads; 13 rectifying device fixed bases; 14 rectifying device supports; 15 rectifying device ribs; 16 flexible membranes.
Embodiment
Embodiment, a kind of wind speed self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed.Working principle of the present invention is as follows: the wind first from different direction enters intensive air channel, jointly be constrained to speed increase by the rectifying device of intensive air channel and umbrella and point to the wind of draught fan impeller edge section after feedback air bag regulates rectifying device, same wind speed points to draught fan impeller edge and more easily makes blower fan open relative to blower fan center, thus blower fan is opened under lower wind speed, be then the mechanical energy of blower fan by Wind resource change.It is the piezoelectric cantilever of substrate that blower fan surrounding is fixed with phosphor bronze, piezoelectric cantilever adopts twin crystal pattern, described overhang is inner arc limit triangle piezoelectric cantilever, outer arc limit triangle piezoelectric cantilever, quadrantal (spherical) triangle piezoelectric cantilever, up and down respectively with PVDF thin film.Piezoelectric cantilever end and overhang fitting seat are screwed, and free end has 3mm to overlap with draught fan impeller edge, thus ensure that impeller effectively impacts overhang when rotated.The impact of draught fan impeller forces overhang generation deformation, thus utilizes piezoelectric effect that the mechanical energy of blower fan is converted to electric energy and Collection utilization.Wind energy collecting efficiency can be improved by the number of the number and draught fan impeller that control piezoelectric cantilever.In FIG, intensive air channel 2 is fixed on fixed support 1 by support, and rectifying device 6 is fixed on rectifying device mounting bracket 5 by rectifying device fixed base 13 in Fig. 3.Blower fan is fixed by assembling support 9.Overhang 8 is arranged on overhang fitting seat 7.
In the present embodiment, piezoelectric cantilever is aforementioned inner arc limit triangle piezoelectric cantilever, outer arc limit triangle piezoelectric cantilever, quadrantal (spherical) triangle piezoelectric cantilever.Blower fan diameter is 115mm, and draught fan impeller number is 4; The substrate of piezoelectric cantilever is phosphor bronze; Piezoelectric material is PVDF thin film.Show that three kinds of piezoelectric cantilever output powers as shown in Figure 4 under same load by analysis of finite element method.As can be seen from the figure inner arc limit overhang has higher power stage, and saves material, and straight flange overhang takes second place, and outer arc limit overhang power stage is minimum.
The present invention and existing wind energy collecting structure structure compared compact, open wind speed low, output power is high, be easy to realize, can power for low energy-consumption electronic device and wireless sensing node.
Claims (5)
1. wind speed self-regulation and the openable piezoelectricity wind-energy collecting device of low wind speed, is characterized in that: it comprises intensive air channel, rectifying device, blower fan and triangle piezoelectric cantilever; The leading portion in intensive air channel is horn-like, and rear end is tubulose; Rectifying device is umbrella, comprise the rib on rectifying device fixed base, flexible membrane, seven supports and seven supports, support and the tapered distribution of rib, flexible membrane is wrapped in outside rib, it changes the size of rectifying device folding under the control of towing pad, and towing pad is drawn by described feedback air bag by transmission device; Intensive air channel and rectifying device change wind speed and direction in the presence of feedback air bag, and the speed that is constrained to by wind increases and the wind pointing to draught fan impeller edge, and then blower fan can be driven at low wind speeds to impact overhang, produce power after piezoelectric cantilever deformation; Intensive air channel (2) is fixed on fixed support (1), rectifying device (6) is fixed on rectifying device mounting bracket (5) by rectifying device fixed base (13), blower fan is fixed in the middle of intensive air channel (2) by assembling support (9), overhang (8) is arranged on overhang fitting seat (7), blower fan surrounding is fixed with piezoelectric cantilever (8), overhang end and overhang fitting seat (7) are screwed, and overhang free end has 3mm to overlap with draught fan impeller edge.
2. piezoelectricity wind-energy collecting device according to claim 1, is characterized in that: described piezoelectric cantilever is inner arc limit triangle piezoelectric cantilever, outer arc limit triangle piezoelectric cantilever or quadrantal (spherical) triangle piezoelectric cantilever.
3. piezoelectricity wind-energy collecting device according to claim 2, is characterized in that: triangle piezoelectric cantilever base, described inner arc limit is straight flange, and two waists are the camber line concaved; Triangle piezoelectric cantilever base, described outer arc limit is straight flange, and two waists are cambered outwards camber line; Described quadrantal (spherical) triangle piezoelectric cantilever base is straight flange, and two waists are straight flange.
4. the piezoelectricity wind-energy collecting device according to claim 1 or 2 or 3, is characterized in that: the number of triangle piezoelectric cantilever is 4.
5. the piezoelectricity wind-energy collecting device according to claim 1 or 2 or 3, is characterized in that: what blower fan surrounding was fixed with phosphor bronze is substrate, is respectively bimorph piezo electric overhang with the triangle piezoelectric cantilever of PVDF thin film up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609727.XA CN104481807B (en) | 2014-11-03 | 2014-11-03 | Wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609727.XA CN104481807B (en) | 2014-11-03 | 2014-11-03 | Wind speed self-adjusting piezoelectric wind energy collecting device capable of being started at low wind speed |
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| Publication Number | Publication Date |
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| CN104481807A true CN104481807A (en) | 2015-04-01 |
| CN104481807B CN104481807B (en) | 2017-04-12 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN105258629A (en) * | 2015-11-06 | 2016-01-20 | 扬州大学 | Multi-electrode cored piezoelectric polymer amplification apparatus |
| CN108590973A (en) * | 2018-04-26 | 2018-09-28 | 大连理工大学 | A kind of flowed energy conversion equipment based on piezoelectricity |
| CN110261663A (en) * | 2019-07-02 | 2019-09-20 | 上海交通大学 | String stagger arrangement pressure energy harvester test device and test method based on wind-induced vibration |
| CN110486227A (en) * | 2019-08-07 | 2019-11-22 | 河海大学 | Wind generator system and its means of defence based on wind environment active defense |
| CN111123019A (en) * | 2020-01-14 | 2020-05-08 | 安徽理工大学 | Multifunctional rotary magnetic excitation vibration energy harvesting experiment table |
| CN112196730A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Power generation device based on wind energy |
| CN112311278A (en) * | 2020-11-27 | 2021-02-02 | 安徽理工大学 | Piezoelectric-magnetoelectric combined aeroelastic vibration energy harvesting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202645867U (en) * | 2012-07-10 | 2013-01-02 | 山东理工大学 | Piezoelectric type wind power generation device |
| US20140003940A1 (en) * | 2012-06-29 | 2014-01-02 | General Electric Company | Apparatus and method for aerodynamic performance enhancement of a wind turbine |
| CN103812383A (en) * | 2014-03-05 | 2014-05-21 | 大连理工大学 | Wind-induced vibration piezoelectricity energy gathering device |
-
2014
- 2014-11-03 CN CN201410609727.XA patent/CN104481807B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140003940A1 (en) * | 2012-06-29 | 2014-01-02 | General Electric Company | Apparatus and method for aerodynamic performance enhancement of a wind turbine |
| CN202645867U (en) * | 2012-07-10 | 2013-01-02 | 山东理工大学 | Piezoelectric type wind power generation device |
| CN103812383A (en) * | 2014-03-05 | 2014-05-21 | 大连理工大学 | Wind-induced vibration piezoelectricity energy gathering device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN105258629A (en) * | 2015-11-06 | 2016-01-20 | 扬州大学 | Multi-electrode cored piezoelectric polymer amplification apparatus |
| CN105258629B (en) * | 2015-11-06 | 2018-04-10 | 扬州大学 | A kind of multi-electrode piezopolymer containing core amplifying device |
| CN108590973A (en) * | 2018-04-26 | 2018-09-28 | 大连理工大学 | A kind of flowed energy conversion equipment based on piezoelectricity |
| CN110261663A (en) * | 2019-07-02 | 2019-09-20 | 上海交通大学 | String stagger arrangement pressure energy harvester test device and test method based on wind-induced vibration |
| CN110261663B (en) * | 2019-07-02 | 2020-07-14 | 上海交通大学 | Test device and test method for series-staggered piezoelectric energy collector based on wind-induced vibration |
| CN110486227A (en) * | 2019-08-07 | 2019-11-22 | 河海大学 | Wind generator system and its means of defence based on wind environment active defense |
| CN110486227B (en) * | 2019-08-07 | 2021-10-19 | 河海大学 | Wind power generation system based on active protection of wind environment and protection method thereof |
| CN111123019A (en) * | 2020-01-14 | 2020-05-08 | 安徽理工大学 | Multifunctional rotary magnetic excitation vibration energy harvesting experiment table |
| CN112196730A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Power generation device based on wind energy |
| CN112311278A (en) * | 2020-11-27 | 2021-02-02 | 安徽理工大学 | Piezoelectric-magnetoelectric combined aeroelastic vibration energy harvesting device |
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