CN109004886A - Photovoltaic blade and its control method and photovoltaic power generation apparatus - Google Patents
Photovoltaic blade and its control method and photovoltaic power generation apparatus Download PDFInfo
- Publication number
- CN109004886A CN109004886A CN201810910908.4A CN201810910908A CN109004886A CN 109004886 A CN109004886 A CN 109004886A CN 201810910908 A CN201810910908 A CN 201810910908A CN 109004886 A CN109004886 A CN 109004886A
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- photovoltaic
- shaft
- photovoltaic panel
- generator unit
- rotation
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- 238000000034 method Methods 0.000 title claims description 22
- 238000010248 power generation Methods 0.000 title claims description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 230000001771 impaired effect Effects 0.000 abstract description 6
- 238000005381 potential energy Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 17
- 239000000428 dust Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005622 photoelectricity Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
-
- 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
- F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
-
- 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
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The present invention relates to a kind of photovoltaic blades, comprising: shaft；Photovoltaic panel is arranged in the shaft, can rotate around the shaft, and drives the shaft to rotate in rotation, wherein is provided with photoelectric conversion unit in the photovoltaic panel；Generator unit is connected to the shaft, for driving the energy of the shaft rotation to be converted to electric energy the photovoltaic panel.Embodiment according to the present invention, since photovoltaic panel is able to drive shaft rotation in rotation, and electric energy is converted to by the energy that photovoltaic panel can be able to drive shaft rotation by generator unit in rotation, so that photovoltaic panel is by the masterpiece used time other than shaft, such as wind-force, the energy that stress generates can be converted to electric energy, rather than accumulated to bend the potential energy of photovoltaic panel, to avoid photovoltaic panel impaired.
Description
Technical field
The present invention relates to the controls of field of photoelectric technology more particularly to photovoltaic blade, photovoltaic power generation apparatus and photovoltaic blade
Method.
Background technique
In order to improve the generating efficiency of photovoltaic power generation apparatus, being generally placed in photovoltaic power generation apparatus does not have barrier shielding light
The open field of line.However the wind-force of open field is generally large, and the photovoltaic blade in current photovoltaic power generation apparatus is most
Be it is fixed, this results in the photovoltaic blade in photovoltaic power generation apparatus often to bear biggish wind-force, is easy to cause photovoltaic leaf
Piece is impaired.
Summary of the invention
The present invention provides the control method of photovoltaic blade, photovoltaic power generation apparatus and photovoltaic blade, to solve in the related technology
Deficiency.
According to a first aspect of the embodiments of the present invention, a kind of photovoltaic blade is provided, comprising:
Shaft；
Photovoltaic panel is arranged in the shaft, can rotate around the shaft, and drives the shaft to rotate in rotation,
Wherein, photoelectric conversion unit is provided in the photovoltaic panel；
Generator unit is connected to the shaft, for driving the energy of the shaft rotation to be converted to the photovoltaic panel
Electric energy.
Optionally, the generator unit is also used to control the shaft and drives the photovoltaic panel rotation.
Optionally, the photovoltaic blade further include:
Wind speed determination unit, for determine the photovoltaic panel wind speed in the environment；
Wherein, the generator unit is when the wind speed is greater than the first pre-set velocity, for the photovoltaic panel to be driven institute
The energy for stating shaft rotation is converted to electric energy.
Optionally, the generator unit drives when the wind speed is greater than the second pre-set velocity for controlling the shaft
The photovoltaic panel rotation；
Wherein, second pre-set velocity is greater than first pre-set velocity.
Optionally, the photovoltaic blade further include:
Strain detecting unit, for detecting the strain of the photoelectric conversion unit；
Wherein, when the size of photoelectric conversion unit strain is greater than pre-set dimension, described in the generator unit control
Shaft drives the photovoltaic panel rotation.
Optionally, the photovoltaic blade further include:
Light-intensity test unit, for detect the photovoltaic panel each direction light in the environment brightness；
Wherein, the generator unit, which is used to control the shaft according to the brightness, drives the photovoltaic panel to rotate.
Optionally, the generator unit is for controlling when the brightness in each direction is below predetermined luminance in the environment
Making the shaft drives the photovoltaic panel to turn to vertical posture.
Optionally, the photovoltaic blade further include:
Time determination unit, for determining the time；
Wherein, the generator unit is used to control the shaft according to the time and rotate.
Optionally, the generator unit controls the shaft and the photovoltaic panel is driven to turn when the time being in night
It moves to vertical posture.
According to a second aspect of the embodiments of the present invention, a kind of photovoltaic power generation apparatus, including any of the above-described embodiment institute are provided
The photovoltaic blade stated.
According to a third aspect of the embodiments of the present invention, a kind of photovoltaic method of controlling vanes is provided, any of the above-described reality is suitable for
Apply photovoltaic blade described in example, which comprises
Determine the photovoltaic panel wind speed in the environment；
If the wind speed is greater than the first pre-set velocity, the photovoltaic panel is driven the shaft rotation by control generator unit
Energy is converted to electric energy.
Optionally, the method also includes:
If the wind speed is greater than the second default wind speed, the shaft is controlled by the generator unit and drives the photovoltaic panel
Rotation.
Optionally, the method also includes:
Detect the strain of the photoelectric conversion unit；
If the size of the photoelectric conversion unit strain is greater than pre-set dimension, the shaft is controlled by the generator unit
The photovoltaic panel is driven to rotate.
According to above-described embodiment it is found that since photovoltaic panel is able to drive shaft rotation in rotation, and it is single by power generation
Member can by photovoltaic panel rotation when be able to drive shaft rotation energy be converted to electric energy so that photovoltaic panel by shaft with
The energy that stress generates can be converted to electric energy by outer masterpiece used time, such as wind-force, rather than be accumulated as bending photovoltaic panel
Potential energy, to avoid photovoltaic panel impaired.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of schematic configuration diagram of the photovoltaic blade shown according to embodiments of the present invention.
Fig. 2 is the perspective view of the explosion of photovoltaic blade shown in FIG. 1.
Fig. 3 is schematic cross-section of the photovoltaic blade shown in FIG. 1 along AA '.
Fig. 4 is the schematic configuration diagram of photoelectric conversion unit in photovoltaic blade shown in FIG. 1.
Fig. 5 is the first bearing of photovoltaic blade shown in FIG. 1 far from the schematic diagram of shaft side.
Fig. 6 is schematic diagram of the first bearing close to shaft side of photovoltaic blade shown in FIG. 1.
Fig. 7 is the firewire attachment structure schematic diagram of photovoltaic blade shown in FIG. 1.
Fig. 8 is the zero curve attachment structure schematic diagram of photovoltaic blade shown in FIG. 1.
Fig. 9 is a kind of schematic flow diagram of photovoltaic method of controlling vanes shown in embodiment according to the present invention.
Figure 10 is the schematic flow diagram of another photovoltaic method of controlling vanes shown in embodiment according to the present invention.
Figure 11 is the schematic flow diagram of another photovoltaic method of controlling vanes shown in embodiment according to the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is a kind of schematic configuration diagram of the photovoltaic blade shown according to embodiments of the present invention.Fig. 2 is light shown in FIG. 1
Lie prostrate the perspective view of the explosion of blade.Photovoltaic blade shown in the present embodiment can be applied to photovoltaic power generation apparatus, photovoltaic power generation apparatus
Luminous energy can be received by the photoelectric conversion unit on photovoltaic blade, and the luminous energy received is converted into electric energy.
As depicted in figs. 1 and 2, the photovoltaic blade includes:
Shaft 1；
Photovoltaic panel 2 is arranged in the shaft 1, can rotate around the shaft 1, and drives 1 turn of the shaft in rotation
It is dynamic, wherein to be provided with photoelectric conversion unit 3 in the photovoltaic panel 2；
Generator unit 4 is connected to the shaft 1, and the energy for driving the shaft 1 to rotate the photovoltaic panel 2 turns
It is changed to electric energy.
It according to the present embodiment, is rotated since photovoltaic panel 2 is able to drive shaft 1 in rotation, and can by generator unit 4
Photovoltaic panel 2 to be able to drive the energy that shaft 1 rotates and be converted to electric energy in rotation so that photovoltaic panel 2 by shaft 1 with
The energy that stress generates can be converted to electric energy by outer masterpiece used time, such as wind-force, rather than be accumulated as bending photovoltaic panel 2
Potential energy, to avoid photovoltaic panel 2 impaired.
In one embodiment, generator unit 4 can be connect in such a way that key is driven with shaft 1, in shaft 1 close to hair
First bearing 5 has can be set in one end of electric unit 4, and second bearing can be set far from one end of generator unit 4 in shaft 1
6.Wherein, first bearing 5 may include first bearing seat 41 and the first axle sleeve 42, and second bearing 5 may include second bearing seat
51 and second axle sleeve 52.
First axle sleeve 42 is sheathed on shaft 1, and is fixed by interference connection and 1 phase of shaft.In the first axle sleeve 42 and first
It is provided with first axle lasso between bearing block 41, first axle lasso can be ladder-like, such as may include two-stage ladder, first
Grade ladder internal diameter is less than the internal diameter of second level ladder, and first order ladder is fixed on the first axle sleeve 42, and second level ladder is fixed on the
One bearing block 41.
Second axle sleeve 52 is sheathed on shaft 1, and is fixed by interference connection and 1 phase of shaft.In the second axle sleeve 52 and second
It is provided with the second axle sleeve circle between bearing block 51, the second axle sleeve circle can be ladder-like, such as may include two-stage ladder, first
Grade ladder internal diameter is less than the internal diameter of second level ladder, and first order ladder is fixed on the second axle sleeve 52, and second level ladder is fixed on the
Two bearing bracket 51.
According to the connection relationship of the first axle sleeve 42 and the second axle sleeve 52 and shaft 1, photovoltaic panel 2 may be implemented in rotation,
It 1 can rotate around the shaft, such as wind, when in photovoltaic panel 2, photovoltaic panel 2 can drive shaft 1 to rotate.In addition, in first axle
It holds and is also provided with end ring 53 in 4.Also, by rotating shaft 1, photovoltaic panel 2 can also be driven to rotate.
Fig. 3 is schematic cross-section of the photovoltaic blade shown in FIG. 1 along AA '.Fig. 4 is photoelectricity in photovoltaic blade shown in FIG. 1
The schematic configuration diagram of converting unit.
In one embodiment, photoelectric conversion unit 3 can be the array being made of multiple photodiodes, such as 4 institutes
Show, a photovoltaic blade may include 4 photodiode arrays, and each photodiode array distinguishes extraction wire 30.
In one embodiment, shaft 1 may include shaft top 11 and shaft lower part 12, wherein shaft lower part 12 can
To be fixed in photovoltaic panel 2.Wherein it is possible to conducting wire 30 is arranged between shaft lower part 12 and shaft top 11, to realize
Conducting wire 30 is placed in the space of relative closure, avoids external foreign matter from entering damage wires 30 or leads to 30 failure of conducting wire.
In one embodiment, conducting wire 30 may include firewire 301 and zero curve 302, wherein firewire 301 can by with
The connection transmission firewire signal of firewire adapter 61, zero curve 302 can be by connecting transmission neutral signal with zero curve adapter 62.
Fig. 5 is the first bearing of photovoltaic blade shown in FIG. 1 far from the schematic diagram of shaft side.Fig. 6 is light shown in FIG. 1
Lie prostrate schematic diagram of the first bearing close to shaft side of blade.Fig. 7 is the firewire connection structure signal of photovoltaic blade shown in FIG. 1
Figure.Fig. 8 is the zero curve attachment structure schematic diagram of photovoltaic blade shown in FIG. 1.
In one embodiment, conducting wire 30 may include firewire 301 and zero curve 302, such as shown in Fig. 7, wherein by up to
It is down respectively the firewire 301 and zero curve 302 of 4 conducting wires 30, in order to further clarify display firewire 301 and zero curve 302, in Fig. 8
In distinguished by different gray scales, as shown in figure 8, wherein white line is firewire 301, the line of black is zero curve 302.
In one embodiment, as shown in figure 5 and figure 7, firewire adapter 61 may include firewire ring brush 611 and fire
Line contact head 612, firewire contact head are in contact with firewire ring brush 611.
Wherein, there are multiple brushes on the inside of firewire ring brush 611, brush is in contact with firewire contact head 612, in photovoltaic leaf
When piece is static or rotates, the firewire signal that photoelectric conversion unit 3 generates can be transmitted to firewire contact head 612 by firewire 301,
And then electricity accumulating unit or power grid are transferred to by firewire ring brush 611.
In one embodiment, as shown in Figure 6 and Figure 8, zero curve adapter 62 may include zero curve ring brush 621 and zero
Line contact head 622, zero curve contact head 622 are in contact with zero curve ring brush 621.
Wherein, there are multiple brushes on the inside of zero curve ring brush 621, brush is in contact with firewire contact head 622, in photovoltaic leaf
When piece is static or rotates, the neutral signal that photoelectric conversion unit 3 generates can be transmitted to zero curve contact head 622 by zero curve 302,
And then electricity accumulating unit or power grid are transferred to by zero curve ring brush 621.
In addition, as shown in fig. 7, domain of the existence A between zero curve 302 and firewire contact head 612, as shown in figure 8, can be in area
Connector 623 is set in the A of domain to connect zero curve 302 and zero curve contact head 622.
Optionally, the generator unit is also used to control the shaft and drives the photovoltaic panel rotation.
In one embodiment, generator unit is also used as motor use, in some cases, can control and turn
Axis 1 drives the photovoltaic panel 2 to rotate, to adjust the motion state and posture of photovoltaic panel 2 as needed.
Optionally, the photovoltaic blade further include:
Wind speed determination unit, for determine the photovoltaic panel wind speed in the environment；
Wherein, the generator unit is when the wind speed is greater than the first pre-set velocity, for the photovoltaic panel to be driven institute
The energy for stating shaft rotation is converted to electric energy.
In one embodiment, since in the lesser situation of wind speed, wind-force is likely difficult to so that photovoltaic panel drives shaft to turn
It is dynamic, in such case, if the photovoltaic panel is being driven the energy of the shaft rotation to be converted to electric energy by generator unit work
State, then will be almost without convertible energy, and generator unit itself work then causes the waste of energy.
Therefore, can be determined by wind speed determination unit photovoltaic panel wind speed in the environment, and be greater than the in wind speed
When one pre-set velocity, generator unit is just made to drive the energy of the shaft rotation to be converted to electric energy the photovoltaic panel, thus
Reduce or even avoid generator unit work waste energy.
Wherein, the first pre-set velocity, which can according to need, is configured, such as when wind speed is equal to the first pre-set velocity, hair
The electric energy that photovoltaic panel is driven the energy of shaft rotation to be converted to by electric unit is equal to generator unit work by the light
The energy that volt strip moves the shaft rotation is converted to the energy consumed needed for the state of electric energy, so that it is pre- to be greater than first in wind speed
If when speed, the energy that the photovoltaic panel drives the shaft to rotate is converted to electric energy and is greater than generator unit by generator unit
The energy consumed needed for itself work, enables generator unit effectively to convert wind energy into electric energy.
In one embodiment, wind speed determination unit can be air velocity transducer, for incuding the wind speed in environment.Wind speed
Determination unit is also possible to signal receiving unit, for receiving weather forecast information, determines photovoltaic leaf according to weather forecast information
The wind speed of piece position.
It should be noted that photoelectric conversion unit can only work when wind speed is less than or equal to the first pre-set velocity, and
It stops working when wind speed is greater than the first pre-set velocity.Can also no matter wind speed be greater than, be less than or equal to the first pre-set velocity all
Work.It specifically can according to need and be configured.
Optionally, the generator unit drives when the wind speed is greater than the second pre-set velocity for controlling the shaft
The photovoltaic panel rotation；
Wherein, second pre-set velocity is greater than first pre-set velocity.
In one embodiment, when wind speed is excessive, when being greater than the second pre-set velocity, photovoltaic blade may be in wind-force
It is rotated too quickly under effect, the structure being easy to damage in photovoltaic blade.
Through generator unit when wind speed is greater than the second pre-set velocity, control shaft drives the photovoltaic panel rotation, thus
The relative velocity of photovoltaic panel and wind can be reduced, to reduce wind to the power of photovoltaic panel, slows down wind-force to a certain extent and drives light
The speed of plate rotation is lied prostrate, and then reduces a possibility that photovoltaic blade is impaired.
Optionally, the photovoltaic blade further include:
Strain detecting unit, for detecting the strain of the photoelectric conversion unit；
Wherein, when the size of photoelectric conversion unit strain is greater than pre-set dimension, described in the generator unit control
Shaft drives the photovoltaic panel rotation.
In one embodiment, when wind speed is excessive, photovoltaic blade may rotate too quickly under the action of the wind, and photoelectricity
Converting unit can generate strain (deformation) with the rotation of photovoltaic blade, and when straining excessive, photoelectric conversion unit may be damaged.
The strain of the photoelectric conversion unit is detected by strain detecting unit, generator unit can be in photoelectric conversion unit
When the size of strain is greater than pre-set dimension, control shaft drives photovoltaic panel rotation, so as to reduce photovoltaic panel and wind
Relative velocity slows down the speed that wind-force drives photovoltaic panel rotation, and then drop to reduce wind to the power of photovoltaic panel to a certain extent
A possibility that low photoelectric conversion unit is damaged.
Optionally, the photovoltaic blade further include:
Light-intensity test unit, for detect the photovoltaic panel each direction light in the environment brightness；
Wherein, the generator unit, which is used to control the shaft according to the brightness, drives the photovoltaic panel to rotate.
In one embodiment, by light-intensity test unit detect the photovoltaic panel each direction light in the environment it is bright
Degree, can determine in real time photovoltaic panel institute in the environment which direction brightness maximum, and then can control shaft drive institute
Photovoltaic panel rotation is stated, so that photovoltaic panel is towards the maximum direction of brightness.
Optionally, the generator unit is for controlling when the brightness in each direction is below predetermined luminance in the environment
Making the shaft drives the photovoltaic panel to turn to vertical posture.
In one embodiment, when the brightness in direction each in environment is below predetermined luminance, it may be possible to which time is up
Night, in such case, since there is no sunlight, there is no need to consider that photovoltaic blade receives the effective area of light, so as to
The photovoltaic panel is driven to turn to vertical posture to control shaft, to reduce the dust and birds excrement that dust is fallen on photovoltaic blade
Just.
Optionally, the photovoltaic blade further include:
Time determination unit, for determining the time；
Wherein, the generator unit is used to control the shaft according to the time and rotate.
In one embodiment, due to the position of the sun opposite photovoltaic blade as the variation of time can change, to change
The angle of deflecting photovoltaic blade irradiation light, and photovoltaic blade unit area when towards the sun receives the brightness of light most
Greatly, therefore generator unit can be made to control the shaft rotation according to the time, such as the sun and light is determined according to the time
The relative position of blade is lied prostrate, and controls shaft rotation to drive photovoltaic panel always towards the sun, to guarantee the effect of photoelectric conversion
Rate.
Optionally, the generator unit controls the shaft and the photovoltaic panel is driven to turn when the time being in night
It moves to vertical posture.
In one embodiment, when time is up night, since there is no sunlight, there is no need to consider that photovoltaic blade receives
The effective area of light drives the photovoltaic panel to turn to vertical posture, falls in light to reduce dust so as to control shaft
Lie prostrate the dust and bird excrement on blade.
The embodiment of the present invention also proposes a kind of photovoltaic power generation apparatus, including photovoltaic leaf described in any of the above-described embodiment
Piece.
With the embodiment of above-mentioned photovoltaic blade correspondingly, the invention also provides the implementations of photovoltaic method of controlling vanes
Example.
Fig. 9 is a kind of schematic flow diagram of photovoltaic method of controlling vanes shown in embodiment according to the present invention.This implementation
Method described in example is suitable for photovoltaic blade described in any of the above-described embodiment.As shown in Figure 9, which comprises
Step S1, determine the photovoltaic panel wind speed in the environment；
Step S2, if the wind speed is greater than the first pre-set velocity, the photovoltaic panel is driven described turn by control generator unit
The energy of axis rotation is converted to electric energy.
In one embodiment, since in the lesser situation of wind speed, wind-force is likely difficult to so that photovoltaic panel drives shaft to turn
It is dynamic, in such case, if the photovoltaic panel is being driven the energy of the shaft rotation to be converted to electric energy by generator unit work
State, then will be almost without convertible energy, and generator unit itself work then causes the waste of energy.
Therefore, can be determined by wind speed determination unit photovoltaic panel wind speed in the environment, and be greater than the in wind speed
When one pre-set velocity, generator unit is just made to drive the energy of the shaft rotation to be converted to electric energy the photovoltaic panel, thus
Reduce or even avoid generator unit work waste energy.
Wherein, the first pre-set velocity, which can according to need, is configured, such as when wind speed is equal to the first pre-set velocity, hair
The electric energy that photovoltaic panel is driven the energy of shaft rotation to be converted to by electric unit is equal to generator unit work by the light
The energy that volt strip moves the shaft rotation is converted to the energy consumed needed for the state of electric energy, so that it is pre- to be greater than first in wind speed
If when speed, the energy that the photovoltaic panel drives the shaft to rotate is converted to electric energy and is greater than generator unit by generator unit
The energy consumed needed for itself work, enables generator unit effectively to convert wind energy into electric energy.
Figure 10 is the schematic flow diagram of another photovoltaic method of controlling vanes shown in embodiment according to the present invention.Such as figure
Shown in 10, the method also includes:
Step S3 controls the shaft by the generator unit and drives institute if the wind speed is greater than the second default wind speed
State photovoltaic panel rotation.
In one embodiment, when wind speed is excessive, when being greater than the second pre-set velocity, photovoltaic blade may be in wind-force
It is rotated too quickly under effect, the structure being easy to damage in photovoltaic blade.
Through generator unit when wind speed is greater than the second pre-set velocity, control shaft drives the photovoltaic panel rotation, thus
The relative velocity of photovoltaic panel and wind can be reduced, to reduce wind to the power of photovoltaic panel, slows down wind-force to a certain extent and drives light
The speed of plate rotation is lied prostrate, and then reduces a possibility that photovoltaic blade is impaired.
Figure 11 is the schematic flow diagram of another photovoltaic method of controlling vanes shown in embodiment according to the present invention.Such as figure
Shown in 11, the method also includes:
Step S4 detects the strain of the photoelectric conversion unit；
Step S5 is controlled if the size of photoelectric conversion unit strain is greater than pre-set dimension by the generator unit
The shaft drives the photovoltaic panel rotation.
In one embodiment, when wind speed is excessive, photovoltaic blade may rotate too quickly under the action of the wind, and photoelectricity
Converting unit can generate strain (deformation) with the rotation of photovoltaic blade, and when straining excessive, photoelectric conversion unit may be damaged.
The strain of the photoelectric conversion unit is detected by strain detecting unit, generator unit can be in photoelectric conversion unit
When the size of strain is greater than pre-set dimension, control shaft drives photovoltaic panel rotation, so as to reduce photovoltaic panel and wind
Relative velocity slows down the speed that wind-force drives photovoltaic panel rotation, and then drop to reduce wind to the power of photovoltaic panel to a certain extent
A possibility that low photoelectric conversion unit is damaged.
Those skilled in the art are considering specification and after practicing disclosure disclosed herein, will readily occur to of the invention its
Its embodiment.The present invention is directed to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (13)
1. a kind of photovoltaic blade characterized by comprising
Shaft；
Photovoltaic panel is arranged in the shaft, can rotate around the shaft, and drives the shaft to rotate in rotation, wherein
Photoelectric conversion unit is provided in the photovoltaic panel；
Generator unit is connected to the shaft, for driving the energy of the shaft rotation to be converted to electric energy the photovoltaic panel.
2. photovoltaic blade according to claim 1, which is characterized in that the generator unit is also used to control the shaft band
Move the photovoltaic panel rotation.
3. photovoltaic blade according to claim 2, which is characterized in that further include:
Wind speed determination unit, for determine the photovoltaic panel wind speed in the environment；
Wherein, the generator unit is when the wind speed is greater than the first pre-set velocity, for the photovoltaic panel to be driven described turn
The energy of axis rotation is converted to electric energy.
4. photovoltaic blade according to claim 3, which is characterized in that the generator unit is greater than second in advance in the wind speed
If when speed, driving the photovoltaic panel rotation for controlling the shaft；
Wherein, second pre-set velocity is greater than first pre-set velocity.
5. photovoltaic blade according to claim 3, which is characterized in that further include:
Strain detecting unit, for detecting the strain of the photoelectric conversion unit；
Wherein, when the size of photoelectric conversion unit strain is greater than pre-set dimension, the generator unit controls the shaft
The photovoltaic panel is driven to rotate.
6. photovoltaic blade according to claim 2, which is characterized in that further include:
Light-intensity test unit, for detect the photovoltaic panel each direction light in the environment brightness；
Wherein, the generator unit, which is used to control the shaft according to the brightness, drives the photovoltaic panel to rotate.
7. photovoltaic blade according to claim 6, which is characterized in that the generator unit is used for each in the environment
When the brightness in direction is below predetermined luminance, controls the shaft and the photovoltaic panel is driven to turn to vertical posture.
8. photovoltaic blade according to claim 2, which is characterized in that further include:
Time determination unit, for determining the time；
Wherein, the generator unit is used to control the shaft according to the time and rotate.
9. photovoltaic blade according to claim 8, which is characterized in that the generator unit is in night in the time
When, it controls the shaft and the photovoltaic panel is driven to turn to vertical posture.
10. a kind of photovoltaic power generation apparatus, which is characterized in that including photovoltaic blade described in any one of claims 1 to 9.
11. a kind of photovoltaic method of controlling vanes, which is characterized in that suitable for photovoltaic leaf described in any one of claims 1 to 9
Piece, which comprises
Determine the photovoltaic panel wind speed in the environment；
If the wind speed is greater than the first pre-set velocity, the photovoltaic panel is driven the energy of the shaft rotation by control generator unit
Be converted to electric energy.
12. according to the method for claim 11, which is characterized in that further include:
If the wind speed is greater than the second default wind speed, the shaft is controlled by the generator unit, the photovoltaic panel is driven to turn
It is dynamic.
13. according to the method for claim 11, which is characterized in that further include:
Detect the strain of the photoelectric conversion unit；
If the size of the photoelectric conversion unit strain is greater than pre-set dimension, the shaft is controlled by the generator unit and is driven
The photovoltaic panel rotation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810910908.4A CN109004886B (en) | 2018-08-10 | 2018-08-10 | Photovoltaic blade, control method thereof and photovoltaic power generation device |
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|---|---|---|---|
| CN201810910908.4A CN109004886B (en) | 2018-08-10 | 2018-08-10 | Photovoltaic blade, control method thereof and photovoltaic power generation device |
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| CN109004886A true CN109004886A (en) | 2018-12-14 |
| CN109004886B CN109004886B (en) | 2020-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857712A (en) * | 2022-07-05 | 2022-08-05 | 航天建设集团深圳有限公司 | Building structure with printing opacity and air purification function |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857712A (en) * | 2022-07-05 | 2022-08-05 | 航天建设集团深圳有限公司 | Building structure with printing opacity and air purification function |
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