CN104793648B - A kind of efficient mixing solar tracking control system combined by tolerance and timing and method - Google Patents
A kind of efficient mixing solar tracking control system combined by tolerance and timing and method Download PDFInfo
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- CN104793648B CN104793648B CN201510199230.XA CN201510199230A CN104793648B CN 104793648 B CN104793648 B CN 104793648B CN 201510199230 A CN201510199230 A CN 201510199230A CN 104793648 B CN104793648 B CN 104793648B
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Abstract
The invention discloses a kind of efficient mixing solar tracking control system combined by tolerance and timing, is tracked by high precision photoelectric sensor, can allow spot projection to center, then made hot spot off-center position one tolerance for a ° and stop at herein.After certain hour timing, hot spot starts photoelectric tracking next time when probably moving to 2a ° of position of relative a ° of position.So while tracking accuracy is improved can reduce tracking cost, make hot spot be in one section of suitable position all the time.Also the motor that light causes is avoided interference by timing controlled frequently to move, improve stability.
Description
Technical field
The invention belongs to solar tracking technical field in photovoltaic generating system, it is related to a kind of solar tracking precision and steady of improving
Qualitatively system and method, more particularly to a kind of efficient mixing solar tracking control system combined by tolerance and timing and method.
Background technology
As the day for rising steadily and supplying of fossil energy price is becoming tight, the whole world increases increasingly to the demand of new forms of energy
It is long.As environmental problem becomes increasingly conspicuous, Green Development theory is gradually rooted in the hearts of the people, and the developing direction and clearing mark of global economy are
Low-carbon economy is turned to so, solar photovoltaic industry is paid attention to by countries in the world.Solar energy is following most cleaning, safety and reliability
The energy, using the exploitation of solar energy as energy revolution main contents Long-term planning, photovoltaic industry is just for developed country
It is increasingly becoming the industry of the another explosive growth after IT, microelectronic industry in the world.
Iii-v light-focusing multi-junction solar cell is the new generation product after crystal silicon, thin-film solar cells, and which is high
Before electricity conversion is, all photovoltaic products cannot be reached.The energy of concentrator cell unit area is improved by convergence mode
Current density, so as to receive more solar irradiations to realize high transformation efficiency in effective time.Just because of its high photoelectric conversion
The characteristics of efficiency, determines high request of its photovoltaic generating system to sunshine incident direction.Light gathering photovoltaic power generating system must lead to
Cross real-time tracking solar azimuth meet assemble after solar facula impinge perpendicularly on solar cell surface.How efficiently simultaneously
Accurately realize that concentration photovoltaic system improves the utilization rate of solar energy to day tracer request, to greatest extent, be still asking for need to solving
One of topic.Solve this problem to start with terms of two, one is the conversion ratio for improving solar energy equipment, and two is to improve solar energy
Receiving efficiency；But still there is no big technological break-through at present.
The content of the invention
In order to solve above-mentioned technical problem, the present invention on the basis of following the trail of depending on day and photoelectric tracing combines increases and holds
Difference and timing controlled, it is proposed that a kind of efficient mixing solar tracking control system combined by tolerance and timing and method.
A kind of efficient mixing solar tracking control system combined by tolerance and timing, it is characterised in that：Including power module,
Photovoltaic battery panel motor, hot spot collection plate, photoelectric sensor, timer and central controller；Described hot spot collection plate
For one piece of centrally disposed round-meshed flat board, described photoelectric sensor, hot spot collection plate are arranged on photovoltaic battery panel, with light
The coplanar setting of volt cell panel；Described central controller respectively with described power module, photovoltaic battery panel motor, photoelectricity
Sensor, timer connection, by the described hot spot collection plate center hole of the transmission for receiving described photoelectric sensor collection
Facula information afterwards, the time set according to timer, the described photovoltaic battery panel motor of control drive photovoltaic battery panel
With hot spot collection plate in real time just to the sun.
The technical scheme adopted by the method for the present invention is：A kind of efficient mixing solar tracking control combined by tolerance and timing
Method processed, it is characterised in that comprise the following steps：
Step 1：The described system of initialization, makes photovoltaic battery panel and hot spot collection plate just to the sun, and sets timer
The initial timing time and tolerance；
Step 2：Within the initial timing time, described photoelectric sensor collection is through described hot spot collection plate center circle
Hot spot mobile message behind hole；
Step 3：When initial timing is arrived, the photovoltaic cell motor described in described central controller controls drives
Photovoltaic battery panel and hot spot collection plate are moved along the direction that the sun is moved, and rotor during motor operation are rotated by motor feedback
The number of turns carry out cumulative measurement；
Step 4：Described central controller is measured by motor feedback, and data reduction is adopted into photovoltaic battery panel and hot spot
Collection plate deviation angle angle value；
Step 5：The deviation angle angle value of calculating is compared with tolerance；
If less than tolerance, then electric system continuation motion, and turn round the step 3 described in performing；
If equal to or be more than tolerance, then motor is out of service；
Step 6：After motor is out of service, and start the new fixed cycle operator of timer.
Preferably, being added up to the number of turns that rotor during motor operation is rotated by motor feedback described in step 3
Metering, it is speed reducing ratio H according to motor which implements process, and the supporting structure of system, is converted into solar incident ray
The angle α formed with the normal of circular hole place plane, then number of turns n=α * H/360 that rotor adds up to turn are enclosed.
Preferably, the new fixed cycle operator described in step 4, its new timing length is first passed through and is calculated by sunshine
Spot moves to the time used by-a from tolerance a, and according to sun operating in 24 hours, 360 ° calculate, then new timing length t=a*
4/360 * 24h seconds.
The present invention is tracked by high precision photoelectric sensor, can be allowed spot projection to center, then be deviateed hot spot
The tolerance of center one is a ° and stops at herein.After certain hour timing, i.e. solar motion causes hot spot big
Start photoelectric tracking next time when generally moving to the -2a ° of position relative to a ° of position.Tracking accuracy can be so improved, hot spot is made
All the time it is in one section of suitable position.Also the motor that light causes is avoided interference by timing controlled frequently to move, improve stable
Property.
The present invention has following advantages and good effect：
（1）In the tracking, the time for carrying out photoelectric tracking is shorter, exterior light wire loop when reducing photoelectric tracking
The motor that border causes is moved back and forth, and improves the stability of system；
（2）Tolerance is introduced, the hot spot during tracking is moved in the range of with center as symmetric points, it is ensured that light
At spot in place, which enhance the precision of whole tracking；
（3）Photoelectric tracking and regard day tracking on the basis of, by tolerance and time-controlled method, make precision it is higher,
It is more stable.
Description of the drawings
Fig. 1：The System Working Principle figure of the embodiment of the present invention；
Fig. 2：The method flow diagram of the embodiment of the present invention；
Fig. 3：The system generated output of the embodiment of the present invention and intensity of illumination comparison diagram.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with the accompanying drawings and embodiment is to this
It is bright to be described in further detail, it will be appreciated that enforcement example described herein is merely to illustrate and explains the present invention, not
For limiting the present invention.
In light gathering photovoltaic power generating system, the accurate and stable tracking sun greatly improves can the efficiency of receiver, enter
And improve the solar energy utilization ratio of photovoltaic generating system.General solar tracking method has depending on day tracking, photoelectric tracing and regards
Day follows the trail of and photoelectric tracing combines.The present invention is day regarding following the trail of and on the basis of photoelectric tracing combines, increase tolerance and determine
When control, it is proposed that it is a kind of by tolerance and the efficient mixing solar tracking control system that combines of timing and method, substantially increase and chase after
Track precision and stability.
A kind of efficient mixing solar tracking control system combined by tolerance and timing of present invention offer, including power module,
Photovoltaic battery panel motor, hot spot collection plate, photoelectric sensor, timer and central controller；Hot spot collection plate is one piece
Centrally disposed round-meshed flat board, photoelectric sensor, hot spot collection plate are arranged on photovoltaic battery panel, coplanar with photovoltaic battery panel
Arrange；Central controller is connected with power module, photovoltaic battery panel motor, photoelectric sensor, timer respectively, by connecing
Receive the facula information after the transmission hot spot collection plate center hole of photoelectric sensor collection, the time set according to timer, control
Photovoltaic battery panel motor processed drives photovoltaic battery panel and hot spot collection plate in real time just to the sun.
Fig. 1 is asked for an interview, is the System Working Principle figure of the present embodiment, 11 arrows are pointed to and represent direction westwards in figure, are the sun
The direction of motion；15th, 16 and 17 expression sunrays project the hot spot to be formed through circular hole, and 16 represent sunray perpendicular to circle
Hole plane is injected to be formed, and 15 and 17 expression sunrays have certain incidence angle with circular hole plane, and 15 represent light from side to the west
To injecting（The sun is advanced）, 17 represent that light are injected from direction by east（The sun is delayed）, circular hole moved with system；12 represent
When the sun is westwards moved, Jing projects the direction of motion of the circular light spot to be formed, and the direction is from west to east.13 and 14 represent
The spot motion direction formed during the system tracks sun is made by motor control, 13 processes are by light-operated control, 14 processes
By timer timing controlled.The a ° and-a ° folder that incident ray and circular hole normal are formed when representing facula deviation center respectively
Angle, the accuracy synthesis that the specific size of a requirement and sensor by system to precision can reach draw.
Ask for an interview Fig. 2, a kind of efficient mixing solar tracking control method combined by tolerance and timing that the present invention is provided, including
Following steps：
Step 1：Initialization system, makes photovoltaic battery panel and hot spot collection plate just to the sun, and sets the initial of timer
Timing and tolerance；
Step 2：Within the initial timing time, photoelectric sensor collection is moved through the hot spot after hot spot collection plate center hole
Dynamic information；
Step 3：When initial timing is arrived, central controller controls photovoltaic battery panel motor drives photovoltaic battery panel
Move along the direction that the sun is moved with hot spot collection plate, and the number of turns that rotor during motor operation is rotated is carried out by motor feedback
Cumulative measurement；The rotor number of turns is measured by motor feedback metering wherein, is the speed reducing ratio according to motor, and system
Frame structure, is converted into the angle of solar incident ray and the normal formation of circular hole place plane.The speed reducing ratio of such as motor is
14400:1, tracing system rotates 0.2 °, then rotor adds up number of turns n=0.2*14400/360=8 circle for turning；
Step 4：Central controller is measured by motor feedback, and data reduction is inclined into photovoltaic battery panel and hot spot collection plate
Move angle value；
Step 5：The deviation angle angle value of calculating is compared with tolerance；
If less than tolerance, then electric system continuation motion, and turn round execution step 3；
If equal to or be more than tolerance, then motor is out of service；
Step 6：After motor is out of service, and start the new fixed cycle operator of timer.Its new timing length first passes through meter
Calculating solar facula and time used by-a being moved to from tolerance a, specific computational methods operate according to the sun for 24 hours
360 ° of calculating, the value of such as a take 0.1, then timing length t=0.1*4/360 * 24h=96 second.
The present invention during the sun is moved from east to west, system sensitive surface follows the sun westwards to move, with photoelectricity with
Track and time timing tracking combine.Photoelectric tracking precision prescribed is very high, and after photoelectric tracking is with standard, projection hot spot is in figure
1 16 positions（Center）；At this moment allow system westwards to be moved again, stop after spot motion to 17 positions, from 16 to 17 processes
In be the angle that reconvert is moved into hot spot by measuring to the motor movement number of turns, so as to be accurately controlled；Complete
After process 14, motor is out of service, while timer starts timing, now with sun's motion, hot spot is from position 17 to position
The motion of 15 directions is put, hot spot of the timing length according to sunshine Jing after optically focused moves into place 15 corresponding goniometers from position 17
Calculate gained；After the completion of process 12, then carry out next round photoelectric tracking 13.
In light gathering photovoltaic power generating system, the tracing movement of system is realized using said method, and measure system in real time
Generated output and current light intensity, the precision and stability of system tracks sun process may know that by analyze data.Please
See Fig. 3, be the generated output and intensity of illumination comparison diagram of concentrating generating system in a day for measuring in October, 2014 day, divide
Analysis understands that, during intensity of illumination is gradually changed, system generated output also followed by change, and change trend curve phase
Closely, and curve is smoother.It will thus be seen that the tracking technique realized using the method, high precision and stable.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, therefore can not be considered to this
The restriction of invention patent protection scope, one of ordinary skill in the art are being weighed without departing from the present invention under the enlightenment of the present invention
Under the protected ambit of profit requirement, replacement can also be made or deformed, be each fallen within protection scope of the present invention, this
It is bright scope is claimed to be defined by claims.
Claims (3)
1. a kind of method using solar tracking is carried out by tolerance and the efficient mixing solar tracking control system that combines of timing, it is described by holding
The efficient mixing solar tracking control system that difference and timing combine, including the collection of power module, photovoltaic battery panel motor, hot spot
Plate, photoelectric sensor, timer and central controller；Described hot spot collection plate is one piece of centrally disposed round-meshed flat board,
Described photoelectric sensor, hot spot collection plate are arranged on photovoltaic battery panel, with the coplanar setting of photovoltaic battery panel；Described central authorities
Controller is connected with described power module, photovoltaic battery panel motor, photoelectric sensor, timer respectively, by receiving
Facula information after the described hot spot collection plate center hole of the transmission of described photoelectric sensor collection, set according to timer
Time, the described photovoltaic battery panel motor of control drives photovoltaic battery panel and hot spot collection plate in real time just to the sun；
Characterized in that, comprising the following steps：
Step 1：The described system of initialization, makes photovoltaic battery panel and hot spot collection plate just to the sun, and sets the first of timer
Beginning timing and tolerance；
Step 2：Within the initial timing time, described photoelectric sensor collection is through after described hot spot collection plate center hole
Hot spot mobile message；
Step 3：When initial timing is arrived, the photovoltaic cell motor described in described central controller controls drives photovoltaic
Cell panel and hot spot collection plate are moved along the direction that the sun is moved, and the circle rotated to rotor during motor operation by motor feedback
Number carries out cumulative measurement；
Step 4：Described central controller is measured by motor feedback, by data reduction into photovoltaic battery panel and hot spot collection plate
Deviation angle angle value；
Step 5：The deviation angle angle value of calculating is compared with tolerance；
If less than tolerance, then electric system continuation motion, and turn round the step 3 described in performing；
If equal to or be more than tolerance, then motor is out of service；
Step 6：After motor is out of service, start the new fixed cycle operator of timer.
2. method according to claim 1, it is characterised in that：Described in step 3 by motor feedback to motor operation
When the number of turns that rotates of rotor carry out cumulative measurement, it is speed reducing ratio H according to motor which implements process, and the support of system
Structure, is converted into the angle α of solar incident ray and the normal formation of circular hole place plane, then rotor adds up the number of turns for turning
N=α * H/360 are enclosed.
3. method according to claim 1, it is characterised in that：New fixed cycle operator described in step 4, its new timing
Duration first passes through and is calculated by solar facula and moves to time used by-a from tolerance a, is operated 360 ° within 24 hours according to the sun
Calculate, then the new timing length t=a*4/360*24h seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510199230.XA CN104793648B (en) | 2015-04-24 | 2015-04-24 | A kind of efficient mixing solar tracking control system combined by tolerance and timing and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510199230.XA CN104793648B (en) | 2015-04-24 | 2015-04-24 | A kind of efficient mixing solar tracking control system combined by tolerance and timing and method |
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| CN104793648A CN104793648A (en) | 2015-07-22 |
| CN104793648B true CN104793648B (en) | 2017-03-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662241A (en) * | 2009-09-18 | 2010-03-03 | 杭州电子科技大学 | Sun orientation automatic tracking method and device used for photovoltaic power generation |
| CN101661295A (en) * | 2009-09-11 | 2010-03-03 | 王泽秀 | Solar automatic tracking and positioning device |
| CN101943915A (en) * | 2010-06-29 | 2011-01-12 | 浙江中控太阳能技术有限公司 | Sunlight reflector closed-loop control system based on reference mirror and method thereof |
| CN103208947A (en) * | 2012-08-20 | 2013-07-17 | 武汉凹伟能源科技有限公司 | Roof solar energy concentrating power generation system |
-
2015
- 2015-04-24 CN CN201510199230.XA patent/CN104793648B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661295A (en) * | 2009-09-11 | 2010-03-03 | 王泽秀 | Solar automatic tracking and positioning device |
| CN101662241A (en) * | 2009-09-18 | 2010-03-03 | 杭州电子科技大学 | Sun orientation automatic tracking method and device used for photovoltaic power generation |
| CN101943915A (en) * | 2010-06-29 | 2011-01-12 | 浙江中控太阳能技术有限公司 | Sunlight reflector closed-loop control system based on reference mirror and method thereof |
| CN103208947A (en) * | 2012-08-20 | 2013-07-17 | 武汉凹伟能源科技有限公司 | Roof solar energy concentrating power generation system |
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| CN104793648A (en) | 2015-07-22 |
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