CN101581937B - Active solar energy tracking method and device - Google Patents
Active solar energy tracking method and device Download PDFInfo
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- CN101581937B CN101581937B CN2009100990481A CN200910099048A CN101581937B CN 101581937 B CN101581937 B CN 101581937B CN 2009100990481 A CN2009100990481 A CN 2009100990481A CN 200910099048 A CN200910099048 A CN 200910099048A CN 101581937 B CN101581937 B CN 101581937B
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Abstract
The invention discloses an active solar energy tracking method, comprising the following steps: acquiring the position information of the current equipment; acquiring the current time and calculating the space position of the sun relative to the current equipment according to the current time; acquiring the angle of reflection of the current sunlight entering the atmosphere from a storage according to the current time; according to the result, calculating the incident angle of the sunlight entering the current equipment and converting the incident angle into control signals, adjusting the posture of the current equipment and leading the current equipment to form a predetermined inclined angle with the incident ray of the sun. The invention also discloses a device used for the solar energy tracking method, comprising a positioning system of the current equipment, an acquiring device of the current time, a storage storing the angle of reflection of the sunlight entering the atmosphere and a controller. The tracking method and the device have good precision and stability.
Description
Technical field
The invention belongs to industrial control field, be specifically related to solar energy tracing method and device, relate in particular to a kind of active solar energy tracing method and device.
Background technology
Solar tracking system can be used for various solar collecting devices, especially in solar power system and the solar water heater.Solar tracking system can effectively improve solar energy collecting efficient, and solar tracking system can rise that the west falls and the alternate in season is adjusted at any time along with the east of sun every day efficiently.
Tracker commonly used at present mainly is to adopt the passive tracking mode, promptly adopt photosensitive device to come the position of perception sunshine, this tracking design easily, its shortcoming is: general photosensitive device all has the sensitization angle of broad, because the scattering of sunlight makes this mode also insensitive to departing from of sunshine angle; In addition, light activated element is often hidden by dust, and the light activated element photoperceptivity is weakened; Perhaps work as two contaminated degree of light activated element not simultaneously, their output will form an intrinsic deviation, and this will cause accurately tracking position of sun of solar panel.
Also having a kind of tracking is active tracking, this tracking is to be read the current time by controller (for example perpetual calendar module) from clock module, can calculate the locus of the sun according to the current time, then according to the longitude of locality, geographic factors such as latitude (can obtain) by global position system GPS, calculate tracking signal, controller sends drive signal to motor driver then, drive motor, the module of drive to need following the tracks of the sun for example solar panel is rotated the purpose that realizes following the tracks of the sun, controller ceaselessly reads the current time from clock module, so that realize the continuous tracking to the sun.A series of problems that active tracking mode has avoided the Passive Track mode to occur, its advantage is that stability is high, tracking position of sun exactly in theory, but actual conditions are, because the effect of earth atmosphere, sunshine can reflect when entering atmospheric envelope, thereby has changed the incident angle of the sun, and this refraction effect can cause great error to the active tracking mode.
With Fig. 1 is that example describes, actual position of sun is 5, solar incident ray is 51, then become 52 through atmospheric envelope 7 refraction back incident raies, the equipment of following the tracks of the sun for needs this moment is for example for the solar panel 6, the plane of solar panel 6 and the 52 vertical collections that just can obtain the solar energy of maximum of incident sunray.If adopt existing passive tracking mode, only do not considering dust, device aging, inconsistent the vertical of solar panel 6 planes and incident sunray 52 of ideally just can realizing of device property.If adopt existing active tracking mode,, can cause solar panel 6 vertical with light 53 owing to do not consider the refraction action of atmospheric envelope to sunshine.Consider actual refraction action, the sun that this tracking mode is followed the tracks of can be on the position that straight line 54 is determined, the actual position 5 of the substantial deviation sun.
Summary of the invention
The invention provides a kind of active solar energy tracing method, overcome the shortcoming of Passive Track and common active tracking in the prior art, improved precision and the stability of solar energy tracking.Solar energy tracing method of the present invention can conveniently be used for various solar collecting devices, improves the utilization ratio of sun power.
The present invention also provides the device that is used for above-mentioned active solar energy tracing method.
A kind of active solar energy tracing method may further comprise the steps:
(1) obtains the positional information of current device, can obtain, also can obtain by miscellaneous equipment configuration in the prior art by reading GPS (GPS);
(2) obtain the current time, according to the locus of the current time calculating sun with respect to current device, wherein, the current time can obtain by electronic calendar, also can obtain by miscellaneous equipment configuration of the prior art;
(3) obtain sunshine according to the current time and enter atmospheric refraction angle;
Sunshine enter atmospheric refraction angle in the data storage of different time in reservoir, and read from reservoir according to the current time and to obtain.
(4) according to the result of step (1)～step (3), calculate the incident angle that sunshine incides current device;
Promptly enter atmospheric refraction angle information calculations and go out the incident angle that current sunshine incides current device according to the locus of the positional information of current device, the sun and current sunshine.
(5) incident angle that sunshine is incided current device is converted to control signal, adjusts the attitude of current device, makes it the angle that becomes to be scheduled to solar incident ray.
A kind of device that is used for aforesaid active solar energy tracing method comprises:
The positioning system of one current device;
One current time deriving means;
One stores the reservoir that sunshine enters atmospheric refraction angle data;
One controller;
Controller is gathered the data of positioning system, time deriving means and reservoir and is converted to control signal, is used to adjust the attitude of current device, makes it the angle that becomes to be scheduled to solar incident ray.
The positioning system of current device can adopt equipment of the prior art, preferably adopts GPS (GPS), is used to obtain the current device positional information; The current time deriving means can adopt equipment of the prior art, preferably adopts electronic calendar, is used to obtain real-time time information; Store sunshine and enter the reservoir of atmospheric refraction angle, be used to provide sunshine to enter the information of atmospheric refraction angle, conveniently reading sunshine according to the current time enters atmospheric refraction angle; Controller enters atmospheric refraction angle information calculations according to the locus of the positional information of current device, the sun and current sunshine and goes out the incident angle that current sunshine incides current device, and be control signal with this conversion of signals, the angle that the current device that control needs to follow the tracks of the sun and solar incident ray become to be scheduled to.Controller can adopt single-chip microcomputer or digital signal processing dsp chip to realize.
With respect to prior art, active solar energy tracing method of the present invention and device have following beneficial effect:
(1) overcome the instability of sensor devices in the Passive Track system.
(2) compare with existing active tracker, considered the influence factor of different time atmospheric refraction in season effect among the present invention, accurately calculate current sunshine and incide the incident angle of current device, and control in view of the above and adjust current device to preposition, thereby making to follow the tracks of has higher precision.
Description of drawings
Fig. 1 is the principle of work synoptic diagram of the solar energy tracking of different modes.
Fig. 2 is the principle of work synoptic diagram of active solar energy tracking means of the present invention.
Fig. 3 is the principle of work synoptic diagram of the another kind of embodiment of active solar energy tracking means of the present invention.
Embodiment
Referring to Fig. 2, active solar energy tracking means of the present invention comprises:
Be used to obtain the GPS 2 of current device positional information;
Be used to obtain the electronic calendar 1 of current time information;
The controller 3 that is used for system-computed and control signal is provided for tracker; Controller 3 can adopt single-chip microcomputer or digital signal processing dsp chip to realize.
Enter the reservoir 4 of atmospheric refraction angle data in order to store sunshine;
Flat solar panel 6 is the current device of the needs tracking sun;
The control motor 62 of the position angle size of the control motor 61 of the elevation angle size of control solar panel 6 and control solar panel 6.
Sunshine is from direction A incident in the present embodiment, and the function of solar tracking system is the elevation angle and the azimuthal variation that makes solar panel 6 by control control motor 61 and control motor 62, makes sunshine reflecting plate 6 and sunshine incident ray keep vertical.
The solar energy tracing method of use device is as follows:
(1) controller 3 reads the positional information that GPS 2 obtains solar panel 6;
(2) controller 3 reads electronic calendar 1 and obtains the current time, obtains the locus of the sun with respect to solar panel 6 according to the current time;
(3) controller 3 reads current sunshine according to the current time and enters atmospheric refraction angle from reservoir 4;
(4) enter atmospheric refraction angle information according to the locus of the sun, the positional information and the sunshine of solar panel 6, controller 3 calculates the incident angle that current sunshine incides solar panel 6.
(5) incide the incident angle of solar panel 6 according to current sunshine, controller 3 calculates the control signal of solar tracking system, and send control signal to the control motor 62 of the position angle size of the control motor 61 of the elevation angle size of control solar panel 6 and control solar panel 6, make the incident ray of solar panel 6 perpendicular to sunshine.
(6) according to the requirement of real-time performance of tracking and system power dissipation can be in certain intervals for example per minute repeating step (1) make solar panel 6 keep vertical to (5) with the incident ray of sunshine according to the change of time always.
Referring to Fig. 3, the active solar energy tracking means of another embodiment of the invention comprises:
Be used to obtain the GPS 2 of current device positional information;
Be used to obtain the electronic calendar 1 of current time information;
The controller 3 that is used for system-computed and control signal is provided for tracker; Controller 3 can adopt single-chip microcomputer or digital signal processing dsp chip to realize.
Enter the reservoir 4 of atmospheric refraction angle data in order to store sunshine;
Sunshine reflecting plate 6 is the current device of the needs tracking sun;
The control motor 62 of the position angle size of the control motor 61 of the elevation angle size of control solar panel 6 and control solar panel 6;
Solar thermal collector 7, the solar irradiation of sunshine reflecting plate 6 reflections is mapped on the solar thermal collector 7.
Sunshine is from direction A incident in the present embodiment, the function of solar tracking system is the elevation angle and the azimuthal variation that makes sunshine reflecting plate 6 by control control motor 61 and control motor 62, and the solar irradiation of sunshine reflecting plate 6 reflections is mapped on the solar thermal collector 7.
The solar energy tracing method of use device is as follows:
(1) controller 3 reads 6 positional informations that GPS 2 obtains the sunshine reflecting plate;
(2) controller 3 reads electronic calendar 1 and obtains the current time, obtains the locus of the sun with respect to sunshine reflecting plate 6 according to the current time;
(3) controller 3 reads current sunshine according to the current time and enters atmospheric refraction angle from reservoir 4;
(4) enter atmospheric refraction angle information according to the locus of the sun, the positional information and the sunshine of sunshine reflecting plate 6, controller 3 calculates the incident angle that current sunshine incides sunshine reflecting plate 6.
(5) incide the incident angle of sunshine reflecting plate 6 according to current sunshine, controller 3 calculates the control signal of solar tracking system, and send control signal to the control motor 62 of the position angle size of the control motor 61 of the elevation angle size of control sunshine reflecting plate 6 and control sunshine reflecting plate 6, the solar irradiation of sunshine reflecting plate 6 reflections is mapped on the solar thermal collector 7.
(6) according to the requirement of real-time performance of tracking and system power dissipation can be in certain intervals for example per minute repeating step (1) make sunshine reflecting plate 6 along with the change of time still can be mapped to the solar irradiation of reflection on the solar thermal collector 7 to (5).
What more than enumerate only is several specific embodiments of the present invention; the invention is not restricted to above embodiment; many distortion can also be arranged, and all distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (4)
1. active solar energy tracing method may further comprise the steps:
(1) obtains the positional information of current device;
(2) obtain the current time, according to the locus of the current time calculating sun with respect to current device;
(3) obtain sunshine according to the current time and enter atmospheric refraction angle, described sunshine enter atmospheric refraction angle in the data storage of different time in reservoir, and read from reservoir according to the current time and to obtain;
(4) according to the result of step (1)～step (3), calculate the incident angle that sunshine incides current device;
(5) incident angle that sunshine is incided current device is converted to control signal, adjusts the attitude of current device, makes it the angle that becomes to be scheduled to solar incident ray.
2. active solar energy tracing method as claimed in claim 1 is characterized in that the information of described current time obtains by electronic calendar.
3. active solar energy tracing method as claimed in claim 1 is characterized in that, the positional information of described current device obtains by reading GPS.
4. be used for the device of active solar energy tracing method as claimed in claim 1, comprise:
The positioning system of one current device;
One current time deriving means;
One stores the reservoir that sunshine enters atmospheric refraction angle;
One controller;
Controller is gathered the data of positioning system, time deriving means and reservoir and is converted to control signal, is used to adjust the attitude of current device, makes it the angle that becomes to be scheduled to solar incident ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100990481A CN101581937B (en) | 2009-06-04 | 2009-06-04 | Active solar energy tracking method and device |
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| CN2009100990481A CN101581937B (en) | 2009-06-04 | 2009-06-04 | Active solar energy tracking method and device |
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| CN101581937A CN101581937A (en) | 2009-11-18 |
| CN101581937B true CN101581937B (en) | 2011-12-21 |
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| CN2009100990481A Expired - Fee Related CN101581937B (en) | 2009-06-04 | 2009-06-04 | Active solar energy tracking method and device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841609A (en) * | 2011-06-24 | 2012-12-26 | 镇江华扬信息科技有限公司 | Method for solar tracking controller system |
| CN103166259A (en) * | 2011-12-14 | 2013-06-19 | 周登荣 | Solar fan comprehensive power supply system |
| CN103926937B (en) * | 2014-04-14 | 2016-06-29 | 国家电网公司 | A kind of high-efficiency solar method for automatic tracking and device |
| CN104142693A (en) * | 2014-08-07 | 2014-11-12 | 中国电子科技集团公司第五十四研究所 | Narrow beam angle tracking method based on Kalman filtering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026345A (en) * | 2007-03-29 | 2007-08-29 | 上海大学 | Solar lighting system controller |
| CN101226406A (en) * | 2008-01-15 | 2008-07-23 | 郭卫平 | Sun tracking system and implementing method based on GPS and GIS |
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2009
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026345A (en) * | 2007-03-29 | 2007-08-29 | 上海大学 | Solar lighting system controller |
| CN101226406A (en) * | 2008-01-15 | 2008-07-23 | 郭卫平 | Sun tracking system and implementing method based on GPS and GIS |
Non-Patent Citations (1)
| Title |
|---|
| 王际洲.一种新型太阳自动跟踪系统的设计.《能源工程》.2009,(第5期),22-24. * |
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