CN114244094B - Multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device - Google Patents
Multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device Download PDFInfo
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- CN114244094B CN114244094B CN202210077112.1A CN202210077112A CN114244094B CN 114244094 B CN114244094 B CN 114244094B CN 202210077112 A CN202210077112 A CN 202210077112A CN 114244094 B CN114244094 B CN 114244094B
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- 238000010248 power generation Methods 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 230000009471 action Effects 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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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
- F03D9/20—Wind motors characterised by the driven apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device, and particularly relates to the field of clean energy power generation. The device comprises a wind direction self-adaptive rotatable support body, a wind power driving module, an electromagnetic power generation module and a piezoelectric power generation module; the specific working principle is as follows: when the device is excited by random multidirectional natural wind, the rotatable support body is designed to cause the fan blade to rotate in the direction opposite to the incoming flow direction, so that the rotating shaft is driven to rotate, and the wind energy and the electric energy are converted through an electromagnetic and piezoelectric double-effect power generation mechanism; the wind direction self-adaptive power generation device can fully collect wind energy with random directions in the nature and convert the wind energy into electric energy, and achieves the aim of improving the wind energy utilization rate; the device has the characteristics of strong environmental adaptability, compact structure, cleanness, no pollution and the like, and can be widely applied to outdoor environments for supplying energy to low-power-consumption micro-electromechanical systems.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device.
Background
With the continuous consumption of traditional fossil energy, the problem of environmental pollution is increasingly serious, and for this reason, various countries in the world are striving to find an alternative clean energy power generation technology; among them, wind energy is becoming a widely existing green energy source and is attracting attention of researchers all over the world.
At present, large-scale wind power generation equipment is widely applied to various provinces with abundant wind energy in northwest China, a technology for driving a rotor by wind load and outputting electric energy by cutting magnetic force lines through the change of relative positions between the rotor and a stator is widely verified; however, low-speed wind energy such as soft wind (0.3-1.6 m/s) and light wind (1.6-3.4 m/s) which are commonly existed in the nature are not fully used because of the randomness of wind direction; it should also be noted that, with the continuous development of the internet of things technology, the microelectromechanical system is continuously developed towards the direction of intelligence and miniaturization, and the traditional cable power supply and the chemical battery power supply are difficult to satisfy; therefore, low-speed wind energy widely existing in the nature can be fully collected, and the conversion of wind energy into electric energy into micro-electromechanical system energy supply is realized by adopting a high-efficiency energy conversion mechanism.
Disclosure of Invention
The invention provides a multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device, which aims to solve the problem of low wind power generation conversion rate of low-speed wind energy caused by uncertain wind direction.
The multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device consists of four parts of a wind-direction self-adaptive rotatable support body, a wind-force driving module, an electromagnetic power generation module and a piezoelectric power generation module, wherein the wind-direction self-adaptive rotatable support body consists of a cylindrical support body (1) and a pair of bearings (2), and the cylindrical support body (1) can rotate for 360 degrees under the support of the bearings (2); the wind power driving module comprises a fan blade cover (3), fan blades (4), a rotating shaft (5) and a pair of bearings (6), wherein natural wind excites the fan blades (4) to rotate, the rotating shaft (5) is fixedly connected with the root parts of the fan blades (4), and the fan blades (4) drive the rotating shaft (5) to rotate under the support of the bearings (6); the electromagnetic power generation module comprises a pair of arc magnets (7) arranged at the tail ends of the fan blades (4), a spring (8) fixedly connected to the fan blade cover (3), a movable magnet (9) and a winding coil (10), wherein when the fan blades (4) rotate, the arc magnets (7) are driven to rotate and periodically generate magnetic force with the movable magnet (9), the spring (8) is caused to stretch, and the vibration frequency of a gap of the movable magnet (9) is increased under the action of magnetic repulsion period due to the elastic force of the spring, so that the change rate of magnetic flux in the winding coil (10) is increased, and the output electric energy efficiency is improved; meanwhile, in order to improve the electric energy output, the number of springs (8), moving magnets (9) and coils (10) can be uniformly arranged along the circumferential direction of the fan blade cover (3); in addition, in order to further improve the wind energy utilization rate, the tail end of the rotating shaft (5) can be provided with a fan blade cover (3), fan blades (4), arc magnets (7), springs (8), moving magnets (9) and winding coils (10) which are arranged in the same mode, and the wind power is used for driving the rotating shaft (5) to drive the tail end fan blades to rotate so as to output multiple electric energy; the piezoelectric power generation module comprises a cylinder fixing frame (11), a magnet (12) and a piezoelectric vibrator (13), wherein an offset distance exists between the longitudinal axis of the cylinder fixing frame (11) and the central axis of a cylindrical supporting body (1) in assembly, and the piezoelectric power generation module aims at periodically deforming a ceramic piezoelectric sheet (13-2) due to the periodic magnetic repulsive force action of the magnet (12) and the end magnet (13-3) when the device is excited by natural wind, the cylindrical supporting body (1) rotates under the support of a bearing (2), finally, a fan blade (4) is the same as the natural wind in direction, the fan blade is excited to rotate, the magnet (12) is fixed on a rotating shaft (5) and rotates along with the rotating shaft, the piezoelectric vibrator (13) consists of a basal layer (13-1), a ceramic piezoelectric sheet (13-2) and an end magnet (13-3), and the piezoelectric vibrator (13) is fixed on the cylinder fixing frame (11), and the ceramic piezoelectric sheet (13-2) is enabled to generate the same angle with the piezoelectric sheet (13-1) in a thickness direction by utilizing a positive piezoelectric effect to output voltage, and the piezoelectric sheet is worth noting that the piezoelectric sheet is bent down and stable; in addition, in order to further improve the wind energy utilization rate, the number of the piezoelectric vibrators (13) can be uniformly distributed along the circumferential direction of the cylinder fixing frame (11).
Compared with the prior art, the invention has the beneficial effects that: the multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device can fully utilize low-speed wind in random directions in the nature to generate power, greatly improves the wind energy utilization rate, is simultaneously provided with electromagnetic and piezoelectric double-effect power generation modes, has the advantages of strong environmental adaptability, compact structure and the like, and can be widely applied to the outdoor environment to supply power for low-power-consumption equipment.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the device;
FIG. 2 is a partial schematic view of a fan blade shroud;
FIG. 3 is a schematic view of the interior of the cylinder mount;
fig. 4 is a schematic diagram of a piezoelectric vibrator.
Detailed Description
The following description is made with reference to the accompanying drawings to further illustrate the technical aspects of the present invention.
The specific embodiment is as follows: as shown in fig. 1, the multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device is respectively composed of four parts of a wind direction self-adaptive rotatable support body, a wind power driving module, an electromagnetic power generation module and a piezoelectric power generation module, wherein the wind direction self-adaptive rotatable support body comprises a cylindrical support body (1) and a bearing (2), and the cylindrical support body (1) can rotate for 360 degrees under the support of the bearing (2); the wind power driving module comprises a fan blade cover (3), fan blades (4), a rotating shaft (5) and a pair of bearings (6), wherein one end of the rotating shaft (5) is fixedly connected with the fan blades (4), and the other end of the rotating shaft is supported by the bearings (6) through the bearings (6) fixed on a cylinder fixing frame (11) so that the rotating shaft (5) and the fan blades (4) synchronously rotate; the electromagnetic power generation module is shown in fig. 2, and comprises an arc-shaped magnet (7) at the tail end of the fan blade (4), a spring (8) fixed on the fan blade cover and a movable magnet (9) fixed on the spring, wherein the arc-shaped magnet (7) and the fan blade (4) synchronously rotate, and periodically generate magnetic repulsive force with the movable magnet (9), and the change rate of magnetic flux in the coil (10) is increased due to the action of the spring (8), so that the output induced electromotive force is increased; the piezoelectric power generation module comprises a cylinder fixing frame (11), a magnet (12) and a piezoelectric vibrator (13), when the device is excited by natural wind, offset distances exist between the central axis of a cylindrical supporting body (1) and the longitudinal axis of the cylinder fixing frame (11), when the device is excited by the natural wind, the cylindrical supporting body (1) rotates under the support of a bearing (2) due to different aerodynamic forces at two sides of the cylinder fixing frame (11), finally, a fan blade (4) rotates in the same direction as the natural wind, the fan blade is excited to rotate, the magnet (12) is fixed on a rotating shaft (5) and synchronously rotates with the rotating shaft, the tail end of the piezoelectric vibrator (13) is fixed on the cylinder fixing frame (11), the tail end magnet (13-3) of the piezoelectric vibrator and the magnet (12) generate periodic magnetic repulsion force, so that ceramic piezoelectric plates (13-2) are periodically deformed, and voltage is output by utilizing positive piezoelectric effect, and the tail end magnet (13-3) of the piezoelectric vibrator (13) is symmetrically fixed along the thickness direction of a substrate layer (13-1), as shown in fig. 4; in addition, in order to further improve the output electric energy, as shown in fig. 2, the number of springs (8), moving magnets (9) and coils (10) can be uniformly arranged on the fan blade cover (3) along the circumferential direction, and the fan blade cover (3), fan blades (4) and electromagnetic power generation modules which are also configured are arranged on the other side of the rotating shaft (5), as shown in fig. 2; also, the number of piezoelectric vibrators (13) as shown in fig. 3 may be uniformly arranged in the circumferential direction inside the cylinder holder (11).
The working principle of the device is as follows: when the initial position of the device is inconsistent with the natural wind direction, as the offset distance exists between the central axis of the cylindrical support body (1) and the longitudinal axis of the cylindrical fixing frame (11), aerodynamic forces on two sides of the cylindrical fixing frame (11) are different, the cylindrical support body (1) is caused to rotate, finally, the fan blades (4) are opposite to the natural wind direction and rotate under the drive of the natural wind, the tail ends of the fan blades (4) are provided with arc magnets (7) and generate periodic magnetic repulsion action with the movable magnets (9), and due to the action of the springs (8), the vibration frequency of the movable magnets (9) is increased, so that the change rate of magnetic flux in the coil (10) is improved, and the output induced electromotive force is further improved; under the drive of the fan blade (4), the rotating shaft (5) synchronously rotates, the magnet (13-3) at the tail end of the piezoelectric vibrator (13) and the magnet (12) on the rotating shaft (5) generate periodic magnetic repulsion action, so that the ceramic piezoelectric plate (13-2) is periodically deformed, and voltage is output by utilizing positive piezoelectric effect.
Claims (5)
1. A multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device is characterized in that: the wind direction self-adaptive rotatable support body, the wind power driving module, the electromagnetic power generation module and the piezoelectric power generation module are formed; specifically, the wind direction self-adaptive rotatable support body is composed of a cylindrical support body (1) and a pair of bearings (2), wherein the tail ends of the cylindrical support body (1) are respectively in interference fit with the bearings (2), so that the cylindrical support body (1) can rotate for 360 degrees under the support of the bearings (2); the wind power driving module comprises a fan blade cover (3), fan blades (4), a rotating shaft (5) and a pair of bearings (6), wherein the rotatable fan blades (4) are arranged in the fan blade cover (3), one end of the rotating shaft (5) is fixed at the root of each fan blade (4), and the other side of the rotating shaft (5) is driven by the fan blades (4) to rotate through the pair of bearings (6); the electromagnetic power generation module comprises arc magnets (7), springs (8), movable magnets (9) and coils (10), wherein the arc magnets (7) are respectively arranged at the tips of the fan blades (4), the springs (8) are fixedly arranged on the fan blade covers (3), the movable magnets (9) are fixedly arranged at the tail ends of the springs (8), the coils (10) are fixedly arranged on the fan blade covers (3), and the axes of the springs (8), the movable magnets (9) and the coils (10) are kept to coincide in the assembly process; the piezoelectric power generation module comprises a cylinder fixing frame (11), a magnet (12) and a piezoelectric vibrator (13), wherein the cylinder fixing frame (11) is connected to a cylindrical supporting body (1), the magnet (12) is circumferentially fixed on a rotating shaft (5), the tail end of the piezoelectric vibrator (13) is fixed on the cylinder fixing frame (11), the piezoelectric vibrator (13) is respectively composed of a basal layer (13-1), a ceramic piezoelectric sheet (13-2) and a tail end magnet (13-3), the ceramic piezoelectric sheet (13-2) is caused to deform under the excitation of magnetic repulsive force of the magnet (12) and the tail end magnet (13-3) of the piezoelectric vibrator, a positive piezoelectric effect is utilized to output voltage, and the central axis of the cylindrical supporting body (1) is not coincident with the longitudinal axis of the cylinder fixing frame (11) but has a bias distance.
2. The multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device according to claim 1, wherein an arc magnet (7) in the electromagnetic power generation module is fixed at the tip of a fan blade (4), a spring (8), a movable magnet (9) and a coil (10) are arranged on a fan blade cover (3), repulsive force exists between the arc magnet (7) and the movable magnet (9), and the purpose of the device is that the arc magnet (7) periodically excites the movable magnet (9) under the rotation action of the fan blade (4), and the magnetic flux change rate of the coil (10) is improved under the action of the spring (8), so that the output induced electromotive force is improved.
3. The multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device according to claim 1 is characterized in that springs (8), moving magnets (9), coils (10) and fan blade covers (3), fan blades (4) and electromagnetic power generation modules which are configured in the same way are arranged on the fan blade covers (3) along the circumferential direction according to the actual power consumption requirement, and the purpose of the multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device is to improve the efficiency of converting wind energy into electric energy and output multiple electric energy.
4. The multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device according to claim 1, wherein the end magnets (13-3) of the piezoelectric vibrators (13) in the piezoelectric power generation module are symmetrically fixed along the thickness direction of the base layer (13-1), and the purpose of the multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device is to cause the ceramic piezoelectric plates (13-2) to rise and bend downwards at the same angle along the thickness direction under the action of periodic repulsive force of the magnets (12) and the end magnets (13-3), so that stable voltage is output.
5. The multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device according to claim 1, wherein the number of piezoelectric vibrators (13) can be uniformly distributed in the cylinder fixing frame (11) along the circumferential direction according to the actual power consumption requirement, and the purpose of the device is to further improve the efficiency of converting wind energy into electric energy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210077112.1A CN114244094B (en) | 2022-01-24 | 2022-01-24 | Multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device |
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| CN202210077112.1A CN114244094B (en) | 2022-01-24 | 2022-01-24 | Multi-wind-direction self-adaptive electromagnetic-piezoelectric composite power generation device |
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| CN114244094A CN114244094A (en) | 2022-03-25 |
| CN114244094B true CN114244094B (en) | 2023-07-25 |
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| CN116123034B (en) * | 2023-01-03 | 2024-03-08 | 西安热工研究院有限公司 | Wind power generation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070059317A (en) * | 2005-12-06 | 2007-06-12 | 허현강 | Wind power generator |
| CN204190648U (en) * | 2014-10-28 | 2015-03-04 | 扬州大学 | wind magnetic piezoelectric generating device |
| WO2016058115A1 (en) * | 2014-10-15 | 2016-04-21 | 国电联合动力技术有限公司 | Yaw control method and system for wind power generation unit |
| CN108266327A (en) * | 2018-03-26 | 2018-07-10 | 华中科技大学 | A kind of model wind generating device |
| CN108843508A (en) * | 2018-06-28 | 2018-11-20 | 嘉兴学院 | A kind of NEW ADAPTIVE wind power plant |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PE20020090A1 (en) * | 2000-07-11 | 2002-02-10 | Pacheco Pedro Saavedra | MARINE WIND ELECTRIC GENERATOR |
| JP5193545B2 (en) * | 2007-09-27 | 2013-05-08 | 三洋電機株式会社 | Power generation device and electronic device |
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- 2022-01-24 CN CN202210077112.1A patent/CN114244094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070059317A (en) * | 2005-12-06 | 2007-06-12 | 허현강 | Wind power generator |
| WO2016058115A1 (en) * | 2014-10-15 | 2016-04-21 | 国电联合动力技术有限公司 | Yaw control method and system for wind power generation unit |
| CN204190648U (en) * | 2014-10-28 | 2015-03-04 | 扬州大学 | wind magnetic piezoelectric generating device |
| CN108266327A (en) * | 2018-03-26 | 2018-07-10 | 华中科技大学 | A kind of model wind generating device |
| CN108843508A (en) * | 2018-06-28 | 2018-11-20 | 嘉兴学院 | A kind of NEW ADAPTIVE wind power plant |
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