CN102915041A - High-precision double-shaft solar tracking system and tracking method thereof - Google Patents
High-precision double-shaft solar tracking system and tracking method thereof Download PDFInfo
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- CN102915041A CN102915041A CN2012104199852A CN201210419985A CN102915041A CN 102915041 A CN102915041 A CN 102915041A CN 2012104199852 A CN2012104199852 A CN 2012104199852A CN 201210419985 A CN201210419985 A CN 201210419985A CN 102915041 A CN102915041 A CN 102915041A
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Abstract
The invention relates to a high-precision double-shaft solar tracking system. The system comprises a controller (101), an analog-to-digital conversion circuit (102), a conditioning circuit (103), a light-controlled tracker (104), a wind speed sensor (105), a driving circuit (106), a global positioning system (GPS) module (107), a display module (108), an azimuth angle motor (109) and an altitude angle motor (110), wherein the light-controlled tracker (104) and the wind speed sensor (105) pass through the conditioning circuit (103) and the analog-to-digital conversion circuit (102) sequentially and then are connected with the controller (101); the controller (101) passes through the driving circuit (106) and drives the azimuth angle motor (109) and the altitude angle motor (110); and the GPS module (107) and the display module (108) are connected with the controller (101). The high-precision double-shaft solar tracking system is wide in application range, high in precision and high in safety performance.
Description
Technical field
The present invention relates to a kind of solar tracking system and tracking thereof, especially relate to a kind of rugged surroundings and high high-precision dual-axis solar tracking system and tracking thereof of precision of can be applicable to.
Background technology
In order to improve photo-voltaic power generation station to the utilization factor of sun power, need position of sun is carried out comprehensive real-time accurate tracking.At present, conventional solar tracking control mode mainly is divided into two classes:
One, utilize light-operated tracker tracking control: light-operated tracker tracking mode has the high advantage of tracking accuracy, but has simultaneously the weak problem of anti-weather interference performance, thereby so that it in some weather environments variation places greatly, is difficult to application;
Two, utilize the sequential tracking control: the sequential tracking mode has and is not subjected to the advantages such as weather effect, reliability be strong, but it can't the automatic calibration cumulative errors;
Simultaneously, all there is larger potential safety hazard in this dual mode: excessive when wind speed, when especially surpassing the ability to bear of whole solar energy system, can cause catastrophic consequence to whole system.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of applied widely, high-precision dual-axis solar tracking system and tracking thereof that high its security performance of precision is high are provided.
The object of the present invention is achieved like this: a kind of high-precision dual-axis solar tracking system, described system includes controller, analog to digital conversion circuit, modulate circuit, light-operated tracker, air velocity transducer, driving circuit, GPS module, display module, azimuth motor and elevation angle motor, described light-operated tracker and air velocity transducer link to each other with controller behind modulate circuit and analog to digital conversion circuit successively, described controller is through driving circuit rear drive azimuth motor and elevation angle motor, and described GPS module links to each other with controller with display module.
A kind of high-precision dual-axis solar tracking system of the present invention, described light-operated tracker includes housing, described housing includes cylindrical shell, two openends of described cylindrical shell are respectively arranged with cover and tube end plate, described cylindrical shell, cover and tube end plate consist of an airtight test chamber, described cover center is provided with a through hole, in this through hole lens are installed, described tube end plate is provided with light activated element one on the one side of test chamber, light activated element two, light activated element three, light activated element four and light activated element five, described light activated element five is arranged at the center of tube end plate, and light activated element five is over against lens, described light activated element one, light activated element two, light activated element three and light activated element four are uniformly distributed in around the light activated element five.
A kind of high-precision dual-axis solar tracking system of the present invention, stating light activated element one, light activated element two, light activated element three, light activated element four and light activated element five-way on the tube end plate crosses stube cable and draws signal wire, power lead and ground wire, signal wire links to each other with worm and gear with electric pushrod, the power taking of described power lead access power supply.
The tracking of a kind of high-precision dual-axis solar tracking system of the present invention, described method includes following steps:
Step 1, controller obtain temporal information by built-in time module, and obtain latitude and longitude information of living in by the GPS module;
Step 2: according to the information that step 1 obtains, controller drives adjusting by driving circuit to azimuth motor and the elevation angle motor of solar tracking system;
Step 3: behind the completing steps two, controller is confirmed the residing azimuth information of the sun by light-operated tracker, and finely tunes according to this orientation information-driven azimuth motor and elevation angle motor.
The tracking of a kind of high-precision dual-axis solar tracking system of the present invention, carrying out step 1 in the step 3, controller obtains wind speed information in real time by air velocity transducer, when wind speed during greater than the preset value in the controller, stop step 1 to the operation of step 3, controller is regulated solar panel by driving azimuth motor and elevation angle motor, so that solar panel tilts to avoid the windward side.
The tracking of a kind of high-precision dual-axis solar tracking system of the present invention, when wind speed in greater than controller during default dangerous values, duration is during greater than the Preset Time in the controller, system stops step 1 to the operation of step 3, only have when controller continues to detect wind speed and be down to time under the survival wind speed in greater than controller during default safety time, system just begins to re-start step 1 to the operation of step 3.
Compared with prior art, the invention has the beneficial effects as follows:
Sequential mode and light-operated tracker mode combined when the present invention adopted, can avoid to greatest extent weather to disturb, can revise cumulative errors again, so that system possesses weather effect and the high characteristics of tracking accuracy of not being subjected to simultaneously, realization is comprehensive, high-precision from motion tracking to position of sun.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of high-precision dual-axis solar tracking system of the present invention.
Fig. 2 is the structural representation of the light-operated tracker in a kind of high-precision dual-axis solar tracking system of the present invention.
Fig. 3 is the synoptic diagram of arranging of light activated element in the light-operated tracker in a kind of high-precision dual-axis solar tracking system of the present invention.
Fig. 4 is the wiring schematic diagram of light-operated tracker and other equipment in a kind of high-precision dual-axis solar tracking system of the present invention.
Wherein:
Housing 1, cylindrical shell 1.1, cover 1.2, tube end plate 1.3;
Light activated element 1, light activated element 2 2.2, light activated element 3 2.3, light activated element 4 2.4, light activated element 5 2.5;
Worm and gear 6.
Embodiment
Referring to Fig. 1 ~ 4, a kind of high-precision dual-axis solar tracking system that the present invention relates to, described system includes controller 101, analog to digital conversion circuit 102, modulate circuit 103, light-operated tracker 104, air velocity transducer 105, driving circuit 106, GPS module 107, display module 108, azimuth motor 109 and elevation angle motor 110, described light-operated tracker 104 and air velocity transducer 105 link to each other with controller 101 behind modulate circuit 103 and analog to digital conversion circuit 102 successively, be used for optoelectronic information and wind speed information are passed to controller 101, described controller 101 is through driving circuit 106 rear drive azimuth motor 109 and elevation angle motor 110, and described GPS module 107 links to each other with controller 101 with display module 108;
Described light-operated tracker 104 includes housing 1, described housing 1 includes cylindrical shell 1.1, two openends of described cylindrical shell 1.1 are respectively arranged with cover 1.2 and tube end plate 1.3, described cylindrical shell 1.1, cover 1.2 and tube end plate 1.3 consist of an airtight test chamber, and (airtight test chamber helps to eliminate the interference of extraneous light, be conducive to improve accuracy of detection, be easy to simultaneously work under the severe environmental conditions such as dust storm in the open air, improve serviceable life), described cover 1.2 centers are provided with a through hole, lens 3 are installed in this through hole, described tube end plate 1.3 is provided with light activated element 1 on the one side of test chamber, light activated element 2 2.2, light activated element 3 2.3, light activated element 4 2.4 and light activated element 5 2.5, described light activated element 5 2.5 is arranged at the center of tube end plate 1.3, and light activated element 5 2.5 is over against lens 3, described light activated element 1, light activated element 2 2.2, light activated element 3 2.3 and light activated element 4 2.4 are uniformly distributed in around the light activated element 5 2.5, be spaced apart 90 ° between its adjacent light activated element, represent respectively all directions four direction, and light activated element 1, light activated element 2 2.2, the central point of light activated element 3 2.3 and light activated element 4 2.4 is positioned on the same circumference, and the central point of light activated element 5 2.5 is positioned on the center of circle of this circumference;
And in use, light activated element 1 on the tube end plate 1.3, light activated element 2 2.2, light activated element 3 2.3, light activated element 4 2.4 and light activated element 5 2.5 are drawn signal wire, power lead and ground wire by stube cable 4, signal wire links to each other with worm and gear 6 with electric pushrod 5, be used for control electric pushrod 5 and 6 pairs of solar panels of worm and gear and regulate, make it over against the sun; The power taking of described power lead access power supply.
The principle of work of this light-operated tracker 104 is:
Be positioned at the light activated element 5 2.5 at tube end plate center for detection of the power of sunshine, when the undercapacity of sunshine so that during the light activated element conducting, through after the comparator circuit, the operational amplifier output low level, single-chip microcomputer is judged as rainy weather, this moment, system did not start trace routine, to save the electric energy of electrical consumption; When sun light intensity is enough to make the light activated element conducting, through after the comparator circuit, operational amplifier output high level, single-chip microcomputer is judged as fine day, and this moment, system started trace routine.
Be positioned at light activated element 5 2.5 light activated element 1, light activated element 2 2.2, light activated element 3 2.3 and light activated element 4 2.4 on every side for detection of position angle and the elevation angle of thing and North and South direction; During work, light beam process lens projects is to the photosurface of light activated element 1, light activated element 2 2.2, light activated element 3 2.3 and light activated element 4 2.4, form the hot spot with certain size, suppose that the spot center coordinate is (X, Y), the light sensor of 4 quadrants is output photoelectric stream I1, I2, I3, I4 respectively.Because current amplitude is less, need to be converted to voltage U 1, U2, U3, U4 through operational amplifier.Utilize voltage U X, UY to express spot center offset information X and Y, suc as formula:
UX?=?U1?+?U4?-?U2?-?U3；
UY?=?U1?+?U2?-?U3?-?U4；
When X=0, Y=0 o'clock, four quadrant facula areas are identical, and electric current is identical, and voltage is identical, output low level, motor attonity; When X ≠ 0, Y ≠ 0 o'clock, four quadrant facula areas are different, and electric current is different, and voltage is different, the output high level, drive motor rotates to respective direction.
Tracking of the present invention includes following steps:
Step 1, controller obtain temporal information by built-in time module, and obtain latitude and longitude information of living in by the GPS module;
Controller calculates according to the information that obtains, and the position of the sun can determine that computing formula is as follows by elevation angle h and position angle A:
sin?h=?sinΨ·sinδ+?cosΨ·cosδ·cosΩ；
sin?A=?(cosδ·sinΩ)/?cos?h；
Wherein: δ is declination angle; Ψ is local latitude; Ω is the hour angle of the sun at that time; Declination angle δ and hour angle Ω can be determined that by local zone time latitude Ψ obtains by the GPS module;
Step 2: according to the information that step 1 obtains, controller drives adjusting by driving circuit to azimuth motor and the elevation angle motor of solar tracking system;
Wherein, solar tracking system adopts conventional double-shaft solar tracking system, such as " the double-shaft solar tracking means " of Chinese patent ZL200920304132.8 announcement, " a kind of solar biaxial tracking means " that ZL201120431001.3 announces etc., but be not limited only to said apparatus, any solar tracking system of twin shaft adjusting of can realizing is all within the protection domain of this patent;
Step 3: behind the completing steps two, controller is confirmed the residing azimuth information of the sun by light-operated tracker, and finely tunes according to this orientation information-driven azimuth motor and elevation angle motor;
Concrete, can adopt the azimuth information of 104 pairs of sun of above-mentioned light-operated tracker to gather, the tube end plate 1.3 of light-operated tracker 104 is fixed on the solar panel, so that cylindrical shell 1.1 is perpendicular with solar panel, only have when sunshine direct light photosensitive elements 5 2.5 to show that just solar panel is over against the sun;
Simultaneously, carrying out step 1 to the process of step 3, controller obtains wind speed information in real time by air velocity transducer, when wind speed during greater than the preset value in the controller, stop step 1 to the operation of step 3, controller is regulated solar panel by driving azimuth motor and elevation angle motor, so that solar panel tilts to avoid the windward side; And when wind speed in greater than controller during default dangerous values, duration is during greater than the Preset Time in the controller, only have when controller continues to detect wind speed and be down to time under the survival wind speed in greater than controller during default safety time, system just begins to re-start step 1 to the operation of step 3.
Claims (6)
1. high-precision dual-axis solar tracking system, it is characterized in that: described system includes controller (101), analog to digital conversion circuit (102), modulate circuit (103), light-operated tracker (104), air velocity transducer (105), driving circuit (106), GPS module (107), display module (108), azimuth motor (109) and elevation angle motor (110), described light-operated tracker (104) and air velocity transducer (105) link to each other with controller (101) behind modulate circuit (103) and analog to digital conversion circuit (102) successively, described controller (101) is through driving circuit (106) rear drive azimuth motor (109) and elevation angle motor (110), and described GPS module (107) links to each other with controller (101) with display module (108).
2. a kind of high-precision dual-axis solar tracking system as claimed in claim 1, it is characterized in that: described light-operated tracker (104) includes housing (1), described housing (1) includes cylindrical shell (1.1), two openends of described cylindrical shell (1.1) are respectively arranged with cover (1.2) and tube end plate (1.3), described cylindrical shell (1.1), cover (1.2) and tube end plate (1.3) consist of an airtight test chamber, described cover (1.2) center is provided with a through hole, lens (3) are installed in this through hole, described tube end plate (1.3) is provided with light activated element one (2.1) on the one side of test chamber, light activated element two (2.2), light activated element three (2.3), light activated element four (2.4) and light activated element five (2.5), described light activated element five (2.5) is arranged at the center of tube end plate (1.3), and light activated element five (2.5) is over against lens (3), described light activated element one (2.1), light activated element two (2.2), light activated element three (2.3) and light activated element four (2.4) are uniformly distributed in light activated element five (2.5) on every side.
3. a kind of high-precision dual-axis solar tracking system as claimed in claim 2, it is characterized in that: the light activated element one (2.1) on the described tube end plate (1.3), light activated element two (2.2), light activated element three (2.3), light activated element four (2.4) and light activated element five (2.5) are drawn signal wire, power lead and ground wire by stube cable (4), signal wire links to each other with worm and gear (6) with electric pushrod (5), the power taking of described power lead access power supply.
4. the tracking of a high-precision dual-axis solar tracking system, it is characterized in that: described method includes following steps:
Step 1, controller obtain temporal information by built-in time module, and obtain latitude and longitude information of living in by the GPS module;
Step 2: according to the information that step 1 obtains, controller drives adjusting by driving circuit to azimuth motor and the elevation angle motor of solar tracking system;
Step 3: behind the completing steps two, controller is confirmed the residing azimuth information of the sun by light-operated tracker, and finely tunes according to this orientation information-driven azimuth motor and elevation angle motor.
5. a kind of tracking of high-precision dual-axis solar tracking system as claimed in claim 4, it is characterized in that: carrying out step 1 in the step 3, controller obtains wind speed information in real time by air velocity transducer, when wind speed during greater than the preset value in the controller, stop step 1 to the operation of step 3, controller is regulated solar panel by driving azimuth motor and elevation angle motor, so that solar panel tilts to avoid the windward side.
6. a kind of tracking of high-precision dual-axis solar tracking system as claimed in claim 5, it is characterized in that: when wind speed in greater than controller during default dangerous values, duration is during greater than the Preset Time in the controller, only have when controller continues to detect wind speed and be down to time under the survival wind speed in greater than controller during default safety time, system just begins to re-start step 1 to the operation of step 3.
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| CN201210419985.2A CN102915041B (en) | 2012-10-29 | 2012-10-29 | A kind of tracking of high-precision dual-axis solar tracking system |
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| CN201210419985.2A CN102915041B (en) | 2012-10-29 | 2012-10-29 | A kind of tracking of high-precision dual-axis solar tracking system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108646790A (en) * | 2018-05-10 | 2018-10-12 | 阜阳昂科丰光电科技有限公司 | A kind of array agriculture light complementation tracking system |
| CN108873839A (en) * | 2018-06-29 | 2018-11-23 | 江苏工民建新能源有限公司 | A kind of building photovoltaic power generation intelligent monitor system based on cloud service |
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| CN1254820A (en) * | 1999-11-05 | 2000-05-31 | 南京春辉科技实业有限公司 | Simplified lighting equipment able to automatically track sun |
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