CN105652901A - Solar tracking system for high-power concentrating photovoltaic electric heating co-generation system - Google Patents
Solar tracking system for high-power concentrating photovoltaic electric heating co-generation system Download PDFInfo
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- CN105652901A CN105652901A CN201610221831.0A CN201610221831A CN105652901A CN 105652901 A CN105652901 A CN 105652901A CN 201610221831 A CN201610221831 A CN 201610221831A CN 105652901 A CN105652901 A CN 105652901A
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- China
- Prior art keywords
- decussation
- tracking
- electric heating
- solar tracking
- concentrating photovoltaic
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
- G05D3/203—Control of position or direction using feedback using a digital comparing device using fine or coarse devices
Abstract
The invention discloses a solar tracking system for a high-power concentrating photovoltaic electric heating co-generation system. The solar tracking system comprises a PLC (Programmable Logic Controller) central controller and an azimuth angle adjusting servo motor, an altitude angle adjusting servo motor, an LCD display, a photoelectric tracking receiver and a sun trace tracking control module which are respectively connected with the PLC central controller, wherein the photoelectric tracking receiver comprises a receiver body and a cooling device arranged under the receiver body. According to the solar tracking system provided by the invention, the photoelectric sun tracking and the sun trace tracking are organically combined and comprehensively utilized; a photoelectric sun tracker is subjected to reasonable structure design; and the sensitivity of the tracker for receiving signals, the control precision of the system and the generating capacity of the solar battery pack are all increased.
Description
Technical field
The present invention relates to technical field of solar, be specifically related to a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system.
Background technology
The energy occupies extremely important strategic position in national economy. Along with the progressively enhancing of the day by day exhausted of whole world fossil energy and mankind's environmental consciousness, except Efforts To Develop is energy-conservation, outside the clean and effective of traditional fossil energy utilizes, the development and utilization of acceleration regenerative resource is also one of important approach. Concentrating photovoltaic power generation technology, as the renewable energy technologies with low cost prospect, just progressively becomes and supports the perspective of Chinese national economy sustainable development, strategic new energy technology.
The method following the tracks of the sun adopted both at home and abroad at present has a lot, but the main mode adopted has following several: program control is followed the tracks of, clock type is followed the tracks of, look a day track following, photo-electric is followed the tracks of; Wherein program control solar tracking mode combines with computer. Apply a formula first with one and calculated the position of the sun in preset time by computer, calculate again and follow the tracks of the position that device is required, the position of requirement is reached finally by transmission gear for electric motor, realize sun altitude and azimuthal tracking, this tracking device still can normal operation under cloudy weather, but there are cumulative errors, and self can not eliminate;
Clock type solar tracking mode is the tracking mode of a kind of passive type, has single shaft and two kinds of forms of twin shaft, and its control method is timing method; According to the sun on high in movement angle per minute, calculate the sunlight receiver angle that should rotate per minute, so that it is determined that go out the rotating speed of motor, sunlight receiver is changed accordingly according to the position of the sun, the elevation angle of the sun is not uniform with the change in season, and to this tracking device belonging to passive type, single-shaft tracking system needs to adjust angle when every day starts working to be directed at the sun, dual-axis tracking system cumulative error is relatively larger, it is necessary to be periodically subject to correction;
Depending on a day track following, whether polar coordinate system or horizon system of coordinates are adopted, the change in location that the sun runs is all foreseeable, by mathematically the prediction of track of sun being completed day tracking, and this tracking device is open cycle system, non-angular value of feedback compares, thus in order to reach the requirement of high precision tracking, not only the level of processing of frame for movement is had stricter requirement, and whether correct relation is extremely close with the installation of instrument;There is many limitation depending on a day track following, mainly need to be accurately positioned before bringing into operation, occur after error can not adjustment etc. automatically, when therefore using this tracking, it is necessary to the regular artificial direction following the tracks of device that adjusts;
Photo-electric solar tracking, first one cylindrical housing is set, in cylinder interior, east, south, west, five, Bei He center is also respectively arranged five photoconductive resistance on position, one pair of which photoconductive resistance thing is symmetrically mounted on the inner side of cylinder, it is used for the deflection angle that accurately the detection sun is moved westerly by east, photoconductive resistance north and south is symmetrically mounted on the inner side of cylinder by another, it is used for accurately detecting the apparent altitude of the sun, whether the photoconductive resistance of center is used for detecting incident ray parallel with following the tracks of device primary optical axis, so measure incident sunray and follow the tracks of the deviation of device key light between centers, when deviation more than one value, the position of device is followed the tracks of in actuator adjustment, until making sunray again parallel with tracking device optical axis, realize sun altitude and azimuthal tracking, currently progressively development and application, but for some special weather situations, its application there is also certain limitation, and photoconductive resistance is affected the accuracy of topic meeting influential system controls such as asking by the cleaning of photoconductive resistance, temperature.
If being auxiliary based on photo-electric solar tracking, depending on day track following, integrated application can utilize mutual advantage, overcome shortcoming each other, increases the generated energy of solar module.
Existing photo-electric tracking receiver there is also some problems in structural design; Plane of illumination such as receptor is unclean, easy affects the photoconductive resistance reception to luminance signal, the resistance of photoconductive resistance can reduce the signal accuracy on tracking receiver and produce impact with the rising of temperature, if able to reduce temperature impact, overcome fault of construction can improve the accuracy of the stability of tracking system operation, control, increase the generated energy of solar module.
Summary of the invention
It is an object of the invention to provide a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system; It is intended to photo-electric solar tracking and looks day track following combination, a comprehensive utilization, photo-electric sun tracker is carried out rational structural design, increase tracker to receive the sensitivity of signal, increase system control accuracy, improve the generated energy of solar module.
The technical solution used in the present invention is for achieving the above object:
A kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system, including PLC central controller with connected azimuth adjustment servomotor, elevation angle regulate servomotor, LCD display, photo-electric tracking receiver and look a day Trajectory Tracking Control module respectively;
Further, described photo-electric tracking receiver includes receptor body and is arranged on heat sink below;
Further, described receptor body includes cylinder, is arranged on four groups of photoconductive resistance of cylinder body bottom, is disposed longitudinally on the decussation dividing plate of inner barrel, is arranged on the decussation dark slide on decussation dividing plate top, is positioned at the printing opacity baffle plate being connected above decussation dark slide and with cylinder; Decussation dark slide is corresponding with decussation dividing plate and the plate arm horizontal width of decussation dark slide is more than the plate arm horizontal width of decussation dividing plate, and four groups of photoconductive resistance are distributed in four regions that decussation dividing plate and cylinder are formed;
Further, described cylinder is cone cylinder shape;
Further, described printing opacity baffle plate is self-cleaning light transmission glass plate, and the outer surface of self-cleaning light transmission glass plate is provided with inorganic nano silicon coating or titanium dioxide automatic cleaning coating;
Further, described heat sink includes being arranged on the housing of receptor body bottom portion, being arranged on the fan of housing central section, the air inlet being arranged on housing and gas outlet;
Further, described air inlet is positioned at above fan blade, and gas outlet is positioned at below fan blade.
The embodiment of the present invention provides the benefit that:
The present invention is based on photo-electric solar tracking, it is aided with when weather conditions are not good and looks a day track following, night closes closed system, resetted by photoconductive resistance signal initial threshold, system can be made to save the energy and return to initial position and out of service, go round and begin again, treat that next sky works on; Adopt the receptor body big opening end of cone cylinder shape cylinder towards the sun, cylinder edge can be avoided to produce shade in photoconductive resistance; Decussation dark slide is corresponding with decussation dividing plate and the plate arm horizontal width of decussation dark slide is more than the plate arm horizontal width of decussation dividing plate, and such decussation dark slide increases corresponding difference in areas in photoconductive resistance during sunlight oblique illumination; Printing opacity baffle plate adopts self-cleaning material, it is ensured that printing opacity requirement; Heat sink can reduce the temperature resistance on photoconductive resistance to be affected, it is ensured that the tracking accuracy of system.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention system architecture diagram;
Fig. 2 is the photo-electric tracking receiver structural representation of the embodiment of the present invention;
Fig. 3 is the plan structure schematic diagram of Fig. 2.
Wherein: 1-PLC central controller; 2-azimuth adjustment servomotor; 3-elevation angle regulates servomotor; 4-LCD display; 5-photo-electric tracking receiver; 6-looks a day Trajectory Tracking Control module; 7-receptor body; 8-heat sink; 9-cylinder; 10-photoconductive resistance; 11-decussation dividing plate; 12-decussation dark slide; 13-printing opacity baffle plate; 14-housing; 15-fan; 16-air inlet; 17-gas outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated:
As shown in Figures 1 to 3, a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system, including PLC central controller 1 with connected azimuth adjustment servomotor 2, elevation angle regulate servomotor 3, LCD display 4, photo-electric tracking receiver 5 and look a day Trajectory Tracking Control module 6 respectively; Described photo-electric tracking receiver 5 includes receptor body 7 and is arranged on heat sink 8 below; Described receptor body 7 includes cylinder 9, is arranged on four groups of photoconductive resistance 10 bottom cylinder 9, is disposed longitudinally on the decussation dividing plate 11 within cylinder 9, is arranged on the decussation dark slide 12 on decussation dividing plate 11 top, is positioned at the printing opacity baffle plate 13 being connected above decussation dark slide 12 and with cylinder 9; Decussation dark slide 12 is corresponding with decussation dividing plate 11 and the plate arm horizontal width of decussation dark slide 12 is more than the plate arm horizontal width of decussation dividing plate 11, and four groups of photoconductive resistance 10 are distributed in four regions that decussation dividing plate 11 and cylinder 9 are formed; Described cylinder 9 is in cone cylinder shape; Described printing opacity baffle plate 13 is self-cleaning light transmission glass plate, and the outer surface of self-cleaning light transmission glass plate is provided with inorganic nano silicon coating or titanium dioxide automatic cleaning coating; Described heat sink 8 includes being arranged on the housing 14 bottom receptor body 7, be arranged on the fan 15 in the middle part of housing 14, the air inlet 16 that is arranged on housing 14 and gas outlet 17;Described air inlet 16 is positioned at above fan 15 blade, and gas outlet 17 is positioned at below fan 15 blade.
In the present invention, PLC central controller 1 is the core that system controls, receiving the solar irradiation signal that photo-electric tracking receiver 5 is beamed back, controlling party parallactic angle regulates servomotor 2 and elevation angle regulates servomotor 3, and azimuth and elevation angle to solar module are adjusted; When the signal received shows currently for special weather situations such as wet weather, PLC central controller 1 regulates servomotor 2 and elevation angle adjustment servomotor 3 by looking day Trajectory Tracking Control module 6 controlling party parallactic angle, and azimuth and elevation angle to solar module are adjusted; LCD display 4 can show relevant control status information; When being in night, PLC central controller 1 is resetted by photoconductive resistance signal initial threshold, makes tracking system save the energy and recovers initial towards position, east and out of service, treats that daytime works on; Assosting effect is only served in systems depending on a day Trajectory Tracking Control module 6, use during for tackling special weather situation, carrying out Comprehensive Control selection by PLC central controller 1, the accumulated error for its appearance can be corrected by photo-electric tracking receiver 5.
Four groups of photoconductive resistance 10 on photo-electric tracking receiver 5, wherein two groups of thing symmetries, two other group north and south symmetries, when sun vertical irradiation is in photoconductive resistance 10, then system remains static, the electric potential signal difference produced by the plane of illumination product moment of the effect increase photoconductive resistance of decussation dark slide 12 and decussation dividing plate 11 when the sun is non-perpendicular and has certain deviation to irradiate is increased, thus tracking accuracy can be improved; Decussation dividing plate 11 is for by photoconductive resistance 10 partition, separation, and decussation dark slide 12 can affect its projected area in photoconductive resistance 10 of sunlight.
Fan 15 on heat sink 8 is arranged in the middle part of housing 14, the corresponding four groups of photoconductive resistance 10 in the top of fan 15, can play the thermolysis to photoconductive resistance 10 when fan 15 operates, and reduces temperature to its impact; Increase the accuracy of signal; Adopting air inlet 16 to be positioned at above fan 15 blade, gas outlet 17 is positioned at the mode below fan 15 blade, is beneficial to circulation of air flow, increases radiating effect.
The printing opacity baffle plate 13 added adopts the light transmission glass plate of self-cleaning material, and the outer surface of self-cleaning light transmission glass plate is provided with inorganic nano silicon coating or titanium dioxide automatic cleaning coating; Its surface contaminant or dust granule can be made to remove under the External Force Actings such as gravity, rainwater, wind-force or by photocatalytic degradation, thus reducing the interference that extraneous factor is brought, improve tracking accuracy.
Last it is noted that the foregoing is only the preferred embodiment of invention, it is not limited to invention, although invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature carries out equivalent replacement. Within all spirit in invention and principle, any amendment of making, equivalent replacements, improvement etc., should be included within the protection domain invented.
Claims (7)
1. the solar tracking system for high power concentrating photovoltaic electric heating co-feeding system, it is characterised in that: include PLC central controller (1) and connected azimuth adjustment servomotor (2), elevation angle regulate servomotor (3), LCD display (4), photo-electric tracking receiver (5) and look a day Trajectory Tracking Control module (6) respectively.
2. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as claimed in claim 1, it is characterised in that: described photo-electric tracking receiver (5) includes receptor body (7) and is arranged on heat sink (8) below.
3. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as claimed in claim 2, it is characterised in that: described receptor body (7) includes cylinder (9), be arranged on four groups of photoconductive resistance (10) of cylinder (9) bottom, decussation dividing plate (11) that to be disposed longitudinally on cylinder (9) internal, be arranged on the decussation dark slide (12) on decussation dividing plate (11) top, be positioned at decussation dark slide (12) top and the printing opacity baffle plate (13) being connected with cylinder (9); Decussation dark slide (12) is corresponding with decussation dividing plate (11) and the plate arm horizontal width of decussation dark slide (12) is more than the plate arm horizontal width of decussation dividing plate (11), and four groups of photoconductive resistance (10) are distributed in four regions that decussation dividing plate (11) and cylinder (9) are formed.
4. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as claimed in claim 3, it is characterised in that: described cylinder (9) is in cone cylinder shape.
5. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as claimed in claim 3, it is characterized in that: described printing opacity baffle plate (13) is self-cleaning light transmission glass plate, and the outer surface of self-cleaning light transmission glass plate is provided with inorganic nano silicon coating or titanium dioxide automatic cleaning coating.
6. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as described in as arbitrary in claim 2 to 5, it is characterised in that: described heat sink (8) includes being arranged on the housing (14) of receptor body (7) bottom, is arranged on the fan (15) at housing (14) middle part, the air inlet (16) being arranged on housing (14) and gas outlet (17).
7. a kind of solar tracking system for high power concentrating photovoltaic electric heating co-feeding system as claimed in claim 6, it is characterized in that: described air inlet (16) is positioned at above fan (15) blade, and gas outlet (17) are positioned at below fan (15) blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221831.0A CN105652901A (en) | 2016-04-11 | 2016-04-11 | Solar tracking system for high-power concentrating photovoltaic electric heating co-generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221831.0A CN105652901A (en) | 2016-04-11 | 2016-04-11 | Solar tracking system for high-power concentrating photovoltaic electric heating co-generation system |
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| CN105652901A true CN105652901A (en) | 2016-06-08 |
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| CN201610221831.0A Pending CN105652901A (en) | 2016-04-11 | 2016-04-11 | Solar tracking system for high-power concentrating photovoltaic electric heating co-generation system |
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| CN106292745A (en) * | 2016-10-10 | 2017-01-04 | 哈尔滨工程大学 | A kind of solar energy photovoltaic panel angle control system method for designing |
| CN113965155A (en) * | 2021-10-28 | 2022-01-21 | 徐方杰 | Sun tracking device based on photovoltaic power generation board |
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| CN113965155A (en) * | 2021-10-28 | 2022-01-21 | 徐方杰 | Sun tracking device based on photovoltaic power generation board |
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Application publication date: 20160608 |