CN102355162A - Concentrating photovoltaic power generation system actively equalizing received solar radiation - Google Patents
Concentrating photovoltaic power generation system actively equalizing received solar radiation Download PDFInfo
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- CN102355162A CN102355162A CN2011102620490A CN201110262049A CN102355162A CN 102355162 A CN102355162 A CN 102355162A CN 2011102620490 A CN2011102620490 A CN 2011102620490A CN 201110262049 A CN201110262049 A CN 201110262049A CN 102355162 A CN102355162 A CN 102355162A
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- 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
- Y02E10/52—PV systems with concentrators
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Abstract
The invention discloses a concentrating photovoltaic power generation system actively equalizing received solar radiation. The system comprises a primary revolution paraboloid concentrating reflector and a secondary revolution paraboloid concentrating reflector. The primary concentrating reflector adopts a concave surface as a reflecting surface, and the central position of the revolution parabolic reflecting surface I of the primary concentrating reflector is provided with a concentrating solar photovoltaic cell module. The secondary concentrating reflector adopts a convex surface as a reflecting surface, and is arranged in the vicinity of a focal point of the revolution parabolic reflecting surface I towards the revolution parabolic reflecting surface I. Incident sunlight is reflected to the revolution parabolic reflecting surface II by the revolution parabolic reflecting surface I and then reflected to the concentrating solar photovoltaic cell module. The system further comprises an automatic adjustment device for a distance between the reflecting surface II and the concentrating solar photovoltaic cell module. The system creatively uses the primary and secondary revolution paraboloid concentrating reflectors between which the distance can be automatically adjusted according to solar radiation conditions to actively equalize the solar radiation received by the concentrating solar photovoltaic cell module, thereby realizing the optimal working condition of the high-power concentrating solar photovoltaic cell module.
Description
Technical field
The present invention relates to solar photoelectric and utilize technical field, the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of particularly a kind of active.
Background technology
Because the energy-flux density of solar energy is lower and in time and seasonal variations, the solar radiation quantity that makes same place same receiving system winter and summer receive differs greatly; Solar photovoltaic generation system to for the constant load power supply tends to occur the overcharge of a battery in summer, and winter, battery overdischarge caused the reliability of system relatively poor.The solar module that lower in addition solar energy energy-flux density makes most of the time in whole year operation does not reach specified output, and optically focused can improve the energy-flux density that incides on the solar cell, and then improves the power output of solar cell; But optically focused can not solve the solar radiation quantity that receives on the solar cell keeps annual relative equilibrium problem.Constantly adjust the concentrator position at high power concentrator device application need, follow the tracks of the maximization that the sun could guarantee that energy is accepted.
Solar tracking system can be used for various helioplants, especially in the high concentration solar generating system, can effectively improve the energy-flux density of solar energy.Existing a kind of solar panel that has a sun tracker can change through the operation of sun-tracing the adjustment cell panel towards angle; Thereby guarantee the acceptance of energy; But this kind device can not solve Various Seasonal solar radiation difference; The solar radiation quantity that makes receiver obtain is unbalanced the whole year, causes system reliability poor.
And for the solar attachment that adopts paraboloid of revolution concentration structure; At present also there be not a kind of can being implemented in the time of the motion tracking sun, initiatively to adjust the device that incides solar radiation quantity on the recipient, the annual relative equilibrium of solar radiation quantity that make to receive light and be directional light and receive.
Summary of the invention
In view of this; The purpose of this invention is to provide the initiatively balanced light gathering photovoltaic power generating system that receives solar radiation quantity; Through adopting two-stage paraboloid of revolution concentration structure; Relative distance between the two can automatically adjust according to the solar radiation situation, thereby changes the solar radiation quantity incide solar cell module surface, realize solar radiation quantity that the Photospot solar photovoltaic battery module receives near the value of setting, to keep relative equilibrium and receive light be directional light.
The objective of the invention is to realize through following technical scheme:
This initiatively balanced light gathering photovoltaic power generating system that receives solar radiation quantity; Comprise the one-level paraboloid of revolution and the secondary paraboloid of revolution; The said one-level paraboloid of revolution adopts concave surface as reflecting surface; Form rotation parabolic reflector I, the center of said rotation parabolic reflector I is provided with the solar-energy photo-voltaic cell module of high power concentrator;
The aperture area of the said one-level paraboloid of revolution is 100 ~ 1500:1 with the ratio of the aperture area of the secondary paraboloid of revolution; The said secondary paraboloid of revolution adopts convex surface as reflecting surface; Form rotation parabolic reflector II; Said rotation parabolic reflector II is provided with towards rotation parabolic reflector I, and the incident sunlight reflexes to rotation parabolic reflector II through rotation parabolic reflector I, reflexes to the solar-energy photo-voltaic cell module again;
Said system comprises that also reflecting surface is apart from far and near adjusting device; Said reflecting surface comprises the telescope support that is connected with the secondary paraboloid of revolution and is used to apart from far and near adjusting device and drives the drive unit that telescope support moves forward and backward, and is used to change rotation parabolic reflector II and the distance of rotating between the parabolic reflector I;
Further, the rotation parabolic reflector II of the said secondary paraboloid of revolution is provided with over against the solar-energy photo-voltaic cell module, the position is set near the focus of rotation parabolic reflector I;
Further, said rotation parabolic reflector I is provided with aluminum plating reflective membrane or is the silvered mirror surface glass with rotating on the parabolic reflector II, and aluminum plating reflective membrane and specular reflectivity are all greater than 80%;
Further; Said system also comprises the reflecting surface auto-tracking sun device; The integrated convex surface bottom that is arranged at the one-level paraboloid of revolution of said reflecting surface auto-tracking sun device; Keeping between reflecting surface I and the reflecting surface II under the constant situation of distance, regulate automatically rotation parabolic reflector I towards the tracking sun;
Further, said reflecting surface auto-tracking sun device is the double-axis tracking structure;
Further, said drive unit is a motor;
Further, said system also comprises controller, and said controller and reflecting surface are apart from far and near adjusting device control connection;
Further, said system also comprises controller, said controller respectively with reflecting surface apart from far and near adjusting device and reflecting surface auto-tracking sun device control connection;
Further; Said system also comprises the battery modules output current real-time information collection device that is used to gather the real-time output current information of solar-energy photo-voltaic cell module; In the time cycle of each setting; The information that said controller provides according to harvester, after comparing with the data of setting, to reflecting surface apart from far and near adjusting device and/or reflecting surface auto-tracking sun device communicating control information.
The invention has the beneficial effects as follows:
1. used to the invention property the two-stage paraboloid of revolution; Distance between the two can automatically adjust based on the solar radiation situation; Thereby realize the best operating condition of high concentration solar photovoltaic cell module and keep relative equilibrium, its compact conformation, easy to use;
2. secondary paraboloid of revolution structure of the present invention becomes all directions sunlight that converges into directional light and reenters and be mapped to concentrator solar cell module surface; Thereby realize the best energy absorption possible of solar-energy photo-voltaic cell module; Further guarantee the flexibility that electricity generation system is regulated, improved the reliability of system.
Other advantages of the present invention, target; To in specification subsequently, set forth to a certain extent with characteristic; And to a certain extent,, perhaps can from practice of the present invention, obtain instruction based on being conspicuous to those skilled in the art to investigating of hereinafter.Target of the present invention and other advantages can realize and obtain through following specification and claims.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is a structural representation of the present invention
Fig. 2 is a control connection sketch map of the present invention.
Embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.Should be appreciated that preferred embodiment has been merely the explanation invention, rather than in order to limit protection scope of the present invention.
As shown in Figure 1; The balanced light gathering photovoltaic power generating system that receives solar radiation quantity of active of the present invention; Comprise the one-level paraboloid of revolution 1 and the secondary paraboloid of revolution 2; In the present embodiment, the one-level paraboloid of revolution 1 all adopts CPC reflecting condensation plate to process with the secondary paraboloid of revolution 2, and wherein the optically focused catoptric arrangement of the one-level paraboloid of revolution 1 adopts concave surface as reflecting surface; Form paraboloid of revolution reflecting surface I 11, the center of paraboloid of revolution reflecting surface I 11 is provided with the solar-energy photo-voltaic cell module 3 with high power concentrator performance;
Wherein the secondary paraboloid of revolution 2 is less than the one-level paraboloid of revolution 1; The optically focused catoptric arrangement of the secondary paraboloid of revolution 2 adopts convex surface as reflecting surface; Form paraboloid of revolution reflecting surface II 21; Paraboloid of revolution reflecting surface II 21 is provided with towards paraboloid of revolution reflecting surface I 11, and incident sunlight reflexes to paraboloid of revolution reflecting surface II 21 through paraboloid of revolution reflecting surface I 11, reflexes to solar-energy photo-voltaic cell module 3 again; Paraboloid of revolution reflecting surface I is the scope of 100 ~ 1500:1 with the ratio of the aperture area of paraboloid of revolution reflecting surface II, and promptly the opening of paraboloid of revolution reflecting surface I will be got 500:1 much larger than paraboloid of revolution reflecting surface II in the present embodiment.
As further improvement, the rotation parabolic reflector II of the secondary paraboloid of revolution is provided with over against the Photospot solar photovoltaic battery module, the position is set near the focus of rotation parabolic reflector I.
System also comprises reflecting surface apart from far and near adjusting device 4, and said reflecting surface comprises the telescope support 41 that is connected with secondary paraboloid of revolution light gathering baffle-board and is used to drive the drive unit 42 that telescope support moves forward and backward apart from far and near adjusting device 4.In the present embodiment, this drive unit adopts motor, certainly, also can adopt other type of drive, like hydraulic means etc.Certainly, this also has travel limits apart from adjustment, in the present embodiment, the adjustable position of rotation parabolic reflector II is near the focus of rotation parabolic reflector I ± scope of 20cm in.
As further improvement; System also comprises the reflecting surface auto-tracking sun device; The said reflecting surface auto-tracking sun device 5 integrated convex surface bottoms that are arranged at the one-level paraboloid of revolution, the said one-level paraboloid of revolution 1 and the secondary paraboloid of revolution 2 become one through jockey, are keeping between compound parabolic reflecting surface I 11 and the compound parabolic reflecting surface II 21 apart under the constant situation; The rotation adjusting one-level paraboloid of revolution 1 towards, realize to sunray from motion tracking.Be that the secondary paraboloid of revolution 2 can be through reflecting surface apart from the distance between the far and near adjusting device change and the one-level paraboloid of revolution 1; But can not rotate the tracking sun voluntarily; Can only be one with the one-level paraboloid of revolution 1, motion under the driving of reflecting surface auto-tracking sun device together.The mechanical structure of reflecting surface auto-tracking sun device can adopt the existing conventional structure, like the class cradle head structure etc. of motor driven.
In the present embodiment, said reflecting surface auto-tracking sun device is the double-axis tracking structure, can realize the orientation and the pitching bi-directional tracking sun.
As further improvement, said paraboloid of revolution reflecting surface I and paraboloid of revolution reflecting surface II are provided with the silver-plated reflectance coating or the reflectance coating of aluminizing.Be used for reflect focalization, be added to the energy-flux density that is mapped on the solar cell, improve power output.
As shown in Figure 2; As further improvement, said system also comprises controller 6, said controller respectively with reflecting surface apart from far and near adjusting device 4 and reflecting surface auto-tracking sun device 5 control connections; Simultaneously; Said system also comprises the battery modules output current real-time information collection device 7 that is used to gather the real-time output current information of solar cell module, in the time cycle of each setting, and the information that controller 6 provides according to harvester; After comparing with the data of setting; To reflecting surface apart from far and near adjusting device and reflecting surface auto-tracking sun device communicating control information, thereby change the relative distance of two-stage paraboloid of revolution light gathering baffle-board and the direction position of paraboloid of revolution light gathering baffle-board, make that shining upon down high concentration solar photovoltaic cell module can obtain best energy reception.Certainly, according to concrete operating position, also can realize only controlling reflecting surface apart from one in far and near adjusting device and the reflecting surface auto-tracking sun device.
Solar-energy photo-voltaic cell module with high power concentrator performance of the present invention, but be the optically focused of 1500 times of optically focused three knot solar cell modules.Photospot solar photovoltaic battery module area 100mm in the present embodiment
2, open circuit voltage 3.193V under 503 times of optically focused conditions, short-circuit current density 6.96A/cm
2, crest voltage 2.84V, peak current density 6.8A/cm
2, peak power 19.3W/cm
2, photoelectric conversion efficiency 39%.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. initiatively balanced light gathering photovoltaic power generating system that receives solar radiation quantity; It is characterized in that: said system comprises the one-level paraboloid of revolution and the secondary paraboloid of revolution; The said one-level paraboloid of revolution adopts concave surface as reflecting surface; Form rotation parabolic reflector I, the center of said rotation parabolic reflector I is provided with the solar-energy photo-voltaic cell module of high power concentrator;
The aperture area of the said one-level paraboloid of revolution is 100 ~ 1500:1 with the ratio of the aperture area of the secondary paraboloid of revolution; The said secondary paraboloid of revolution adopts convex surface as reflecting surface; Form rotation parabolic reflector II; Said rotation parabolic reflector II is provided with towards rotation parabolic reflector I, and the incident sunlight reflexes to rotation parabolic reflector II through rotation parabolic reflector I, reflexes to the solar-energy photo-voltaic cell module again;
Said system comprises that also reflecting surface is apart from far and near adjusting device; Said reflecting surface comprises the telescope support that is connected with the secondary paraboloid of revolution and is used to apart from far and near adjusting device and drives the drive unit that telescope support moves forward and backward, and is used to change rotation parabolic reflector II and the distance of rotating between the parabolic reflector I.
2. the light gathering photovoltaic power generating system of solar radiation quantity is accepted in a kind of active equilibrium according to claim 1; It is characterized in that: the rotation parabolic reflector II of the said secondary paraboloid of revolution is provided with over against the solar-energy photo-voltaic cell module, the position is set near the focus of rotation parabolic reflector I.
3. the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of a kind of active according to claim 2; It is characterized in that: said rotation parabolic reflector I is provided with aluminum plating reflective membrane or is the silvered mirror surface glass with rotating on the parabolic reflector II, aluminum plating reflective membrane and specular reflectivity are all greater than 80%.
4. the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of a kind of active according to claim 1; It is characterized in that: said system also comprises the reflecting surface auto-tracking sun device; The integrated convex surface bottom that is arranged at the one-level paraboloid of revolution of said reflecting surface auto-tracking sun device; Keeping between reflecting surface I and the reflecting surface II under the constant situation of distance, regulate automatically rotation parabolic reflector I towards the tracking sun.
5. the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of a kind of active according to claim 4, it is characterized in that: said reflecting surface auto-tracking sun device is the double-axis tracking structure.
6. the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of a kind of active according to claim 1, it is characterized in that: said drive unit is a motor.
7. the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of a kind of active according to claim 1, it is characterized in that: said system also comprises controller, said controller and reflecting surface are apart from far and near adjusting device control connection.
8. according to claim 4 or the balanced light gathering photovoltaic power generating system that receives solar radiation quantity of 5 described a kind of actives; It is characterized in that: said system also comprises controller, said controller respectively with reflecting surface apart from far and near adjusting device and reflecting surface auto-tracking sun device control connection.
9.
RootThe balanced light gathering photovoltaic power generating system of stating according to claim 8 that receives solar radiation quantity of a kind of active; It is characterized in that: said system also comprises the battery modules output current real-time information collection device that is used to gather the real-time output current information of solar-energy photo-voltaic cell module; In the time cycle of each setting; The information that said controller provides according to harvester; After comparing with the data of setting, to reflecting surface apart from far and near adjusting device and/or reflecting surface auto-tracking sun device communicating control information.
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| CN2011102620490A CN102355162A (en) | 2011-09-06 | 2011-09-06 | Concentrating photovoltaic power generation system actively equalizing received solar radiation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103427714A (en) * | 2013-08-13 | 2013-12-04 | 涿州聚烨新能源技术有限公司 | Solar reflecting and light-gathering photovoltaic system and reflecting and light-gathering method |
| CN103474508A (en) * | 2013-09-03 | 2013-12-25 | 涿州聚烨新能源技术有限公司 | Solar reflecting and concentrating photovoltaic system and reflecting and concentrating thermoelectricity supply method of solar reflecting and concentrating photovoltaic system |
| CN103955230A (en) * | 2014-04-11 | 2014-07-30 | 中科力函(深圳)热声技术有限公司 | Light condensing power adjusting device and solar power generation device |
| CN104221279A (en) * | 2012-03-30 | 2014-12-17 | 国际商业机器公司 | Photovoltaic thermal hybrid systems and method of operation thereof |
| CN104270081A (en) * | 2014-07-28 | 2015-01-07 | 河南大易程再生产业有限公司 | Solar energy collecting device |
| WO2017088334A1 (en) * | 2015-11-25 | 2017-06-01 | 刘洋 | Wireless communication technology-based charging pile using off-grid photovoltaic power generation |
| CN110677117A (en) * | 2019-10-28 | 2020-01-10 | 中国科学院西安光学精密机械研究所 | Solar photovoltaic focusing system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104221279A (en) * | 2012-03-30 | 2014-12-17 | 国际商业机器公司 | Photovoltaic thermal hybrid systems and method of operation thereof |
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| CN103955230A (en) * | 2014-04-11 | 2014-07-30 | 中科力函(深圳)热声技术有限公司 | Light condensing power adjusting device and solar power generation device |
| CN104270081A (en) * | 2014-07-28 | 2015-01-07 | 河南大易程再生产业有限公司 | Solar energy collecting device |
| WO2017088334A1 (en) * | 2015-11-25 | 2017-06-01 | 刘洋 | Wireless communication technology-based charging pile using off-grid photovoltaic power generation |
| CN110677117A (en) * | 2019-10-28 | 2020-01-10 | 中国科学院西安光学精密机械研究所 | Solar photovoltaic focusing system |
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Application publication date: 20120215 |