CN103427714B - A kind of solar energy reflection concentration photovoltaic system and reflecting condensation method thereof - Google Patents
A kind of solar energy reflection concentration photovoltaic system and reflecting condensation method thereof Download PDFInfo
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- CN103427714B CN103427714B CN201310351471.2A CN201310351471A CN103427714B CN 103427714 B CN103427714 B CN 103427714B CN 201310351471 A CN201310351471 A CN 201310351471A CN 103427714 B CN103427714 B CN 103427714B
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Abstract
A kind of solar energy reflection concentration photovoltaic system and reflecting condensation method thereof, this system comprises: light reflecting device, light energy receiver, Universal rotary device and controller, light reflecting device is fixed on Universal rotary device, can rotate along arbitrary orientation, light energy receiver is fixed on the light reflection path of light reflecting device; Light reflecting device comprises: framework and multiple speculum; Multiple speculum is arranged on framework side by side, forms butterfly structure; Light energy receiver comprises: shell, travel mechanism and photovoltaic cell component; Shutter is arranged on the opening part of shell; Photovoltaic cell is just being arranged at the inside of shell to printing opacity mouth, and is moved along the direction of vertical shutter by travel mechanism; Controller connects travel mechanism and Universal rotary device, for driving travel mechanism and Universal rotary device.The present invention can adjust optically focused intensity in real time by regulating the distance between photovoltaic cell and light reflecting device, improves the efficiency of photovoltaic generation, expands the range of application of photovoltaic generation.
Description
Technical field
The present invention relates to condensation photovoltaic technology, particularly about adaptive reflection concentration type photovoltaic technology, is a kind of solar energy reflection concentration photovoltaic system and reflecting condensation method thereof concretely.
Background technology
Condensation photovoltaic technology is by using optical material as lens or speculum, the sunlight of larger area being gathered a kind of solar energy generation technology of the light-collecting area being provided with photovoltaic cell.Wherein, the area ratio of reflector space or regional transmission and light-collecting area is optically focused intensity.The optically focused intensity of current high power light concentrating photovoltaic system can reach 300-1000 doubly.
A part for global solar radiation energy can only be converted to electric energy (conversion efficiency of current high efficiency multinode photovoltaic cell is greatly about about 40%) by the photovoltaic cell due to concentration photovoltaic system, all the other account for most luminous energy can be converted into heat energy, if this part heat energy effectively can not be cemented out, there will be superhigh temperature in light-collecting area, the damage of the components and parts (photovoltaic cell) in this region can be caused.
In existing condensation photovoltaic product, optically focused intensity is set to a fixed value, wherein the selection of optically focused intensity can by the receptible maximum optical power density DNI(Direct Normal Irradiation of photovoltaic module, and namely light concentrating times is multiplied by direct solar radiation energy) design.The drawback of this design is, the duration of DNI maximum is shorter, this is because the maximum of DNI often appears at the meridian hour in summer, now concentration photovoltaic system is the shortest to the air line distance of the sun, and As time goes on, concentration photovoltaic system is elongated to the air line distance of the sun, and the maximum of DNI also just cannot keep.So under the existing concentration photovoltaic system most of the time is all operated in the condition of optical power density deficiency, the rated generation that cannot reach its design is exerted oneself, and operating efficiency is low, causes the huge waste of resource.
Summary of the invention
The invention provides a kind of solar energy reflection concentration photovoltaic system and reflecting condensation method thereof, to adjust optically focused intensity in real time, improve photovoltaic efficiency.
To achieve these goals, the invention provides a kind of reflecting condensation method of solar energy reflection concentration photovoltaic system, described method comprises: adopt light reflecting device by sunlight reflecting condensation on the photovoltaic cell of photovoltaic cell component; According to the path clustering on sunlight arrival ground, light reflecting device is in rotary moving, makes described light reflecting device towards the sun; The energy value of the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, makes described light reflecting device reflex to light on described photovoltaic cell apart from changing; The transform light energy that the sunlight received reflects by described photovoltaic cell is electric energy.
In one embodiment, the distance that the energy value of the sunlight reflection received according to described photovoltaic cell component adjusts between described photovoltaic cell component and described light reflecting device comprises: carry out detection to the temperature of described photovoltaic cell and generate detected temperatures, adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature.
In one embodiment, the distance that the energy value of the sunlight reflection received according to described photovoltaic cell component adjusts between described photovoltaic cell component and described light reflecting device comprises: carry out to the energy output of described photovoltaic cell detections and generate and detect energy output, adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference of detection energy output and rated generation amount.
In one embodiment, described method comprises: be arranged at by described photovoltaic cell component in the light path between described light reflecting device and this light reflecting device focus; The detected temperatures of described photovoltaic cell and rated temperature are compared, if detected temperatures is greater than rated temperature, then shortens the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described method comprises: be arranged at by described photovoltaic cell component on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device; The detected temperatures of described photovoltaic cell part and rated temperature are compared, if detected temperatures is greater than rated temperature, then increases the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described method comprises: be arranged at by described photovoltaic cell component in the light path between described light reflecting device and this light reflecting device focus; The detection energy output of described photovoltaic cell and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then shortens the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described method comprises: be arranged at by described photovoltaic cell component on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device; The detection energy output of described photovoltaic cell part and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then increases the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device.
To achieve these goals, the invention provides a kind of solar energy reflection concentration photovoltaic system, described system comprises: light reflecting device, is condensed to the photovoltaic cell of photovoltaic cell component for reflected sunlight and by the sunlight of reflection; Rotating control assembly, in rotary moving for light reflecting device according to the path clustering on sunlight arrival ground, make described light reflecting device towards the sun; Light is apart from adjusting device, and the energy value for the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, and the light distance that described light reflecting device is reflexed on described photovoltaic cell changes; Described photovoltaic cell, the transform light energy reflected by the sunlight received is electric energy.
In one embodiment, described light comprises further apart from adjusting device: temperature detecting unit, detected temperatures is generated for carrying out detection to the temperature of described photovoltaic cell, distance controlling unit, for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature.
In one embodiment, described light comprises further apart from adjusting device: energy output detecting unit, generate detection energy output for carrying out detection to the energy output of the photovoltaic cell in described photovoltaic cell component, described distance controlling unit is for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference detecting energy output and rated generation amount.
In one embodiment, described photovoltaic cell component is arranged in the light path between described light reflecting device and this light reflecting device focus; The detected temperatures of described photovoltaic cell and rated temperature compare by described distance controlling unit, if detected temperatures is greater than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described photovoltaic cell component is arranged on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device; The detected temperatures of described photovoltaic cell and rated temperature compare by described distance controlling unit, if detected temperatures is greater than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described photovoltaic cell component is arranged in the light path between described light reflecting device and this light reflecting device focus; The detection energy output of described photovoltaic cell and rated generation amount compare by described distance controlling unit, if detect energy output to be greater than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device.
In one embodiment, described photovoltaic cell component is arranged on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device; The detection energy output of described photovoltaic cell and rated generation amount compare by described distance controlling unit, if detect energy output to be greater than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device.
To achieve these goals, the invention provides a kind of solar energy reflection concentration photovoltaic system, described system comprises: light reflecting device, light energy receiver, Universal rotary device and controller, described light reflecting device is fixed on described Universal rotary device, and can rotate along arbitrary orientation, described light energy receiver is fixed on the light reflection path of described light reflecting device by support; Described light reflecting device comprises: framework and multiple speculum; Described multiple speculum is installed on said frame side by side, forms butterfly structure; Described light energy receiver comprises: shell, travel mechanism, possess and be provided with the shutter of printing opacity mouth and the photovoltaic cell component of photovoltaic cell; Described shutter is arranged on the opening part of described shell; Described photovoltaic cell is just being arranged at the inside of described shell to described printing opacity mouth, and be fixed in described travel mechanism, move along the direction of vertical described shutter under the driving of described travel mechanism, the light distance that described light reflecting device is reflexed on described photovoltaic cell changes; Travel mechanism described in described controller connects and Universal rotary device, for driving described travel mechanism and Universal rotary device.
Further, described controller comprises: travel mechanism's control unit, the travel mechanism described in connection, for the travel mechanism according to the power driving of direct solar radiation energy; Rotation control unit, the Universal rotary device described in connection, for adjusting the orientation of described light reflecting device in real time according to the position of the sun.
Further, described travel mechanism comprises: screw rod or rack and pinion, and motor.
Further, described Universal rotary device comprises: vertically rotating mechanism, and the framework described in being connected by a connection piece, is rotated at vertical direction for driving described light reflecting device; Horizontal rotary mechanism, being arranged on below described vertical rotating mechanism, rotating in the horizontal direction for driving described light reflecting device.
Advantageous Effects of the present invention is: the present invention can adjust optically focused intensity in real time by regulating the distance between photovoltaic cell and light reflecting device, improves the efficiency of photovoltaic generation, expands the range of application of photovoltaic generation.In addition, the present invention can adjust the position of light reflecting device in real time according to the position of the sun, make light reflecting device just to the sun, to receive maximum light intensity.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the reflecting condensation method flow diagram of the solar energy reflection concentration photovoltaic system of the present embodiment;
Fig. 2 is the structural representation of the reflection concentration type photovoltaic devices of the embodiment of the present invention;
Fig. 3 is the structural representation of the light energy receiver 202 of the embodiment of the present invention;
Fig. 4 is that the light of sunlight in communication process of the embodiment of the present invention reflects and receiving area schematic diagram;
Fig. 5 is the change curve of DNI among the invention process one day;
Fig. 6 is the moving direction schematic diagram of the photovoltaic cell component of the embodiment of the present invention one;
Fig. 7 is the solar energy reflection concentration photovoltaic system structured flowchart of the embodiment of the present invention;
Fig. 8 is the structured flowchart of embodiment of the present invention light apart from adjusting device;
Fig. 9 is the moving direction schematic diagram of the photovoltaic cell component of the embodiment of the present invention two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
As shown in Figure 1, the present embodiment provides a kind of reflecting condensation method of solar energy reflection concentration photovoltaic system, and the reflecting condensation method of this solar energy reflection concentration photovoltaic system comprises:
Step S101: adopt light reflecting device by sunlight reflecting condensation on the photovoltaic cell of photovoltaic cell component;
Step S102: light reflecting device is in rotary moving according to the path clustering on sunlight arrival ground, makes described light reflecting device towards the sun;
Step S103: the energy value of the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, makes described light reflecting device reflex to light on described photovoltaic cell apart from changing;
Step S104: the transform light energy that the sunlight received reflects by described photovoltaic cell is electric energy.
Flow process is as shown in Figure 1 known, in the present embodiment, light reflecting device is by after on sunlight reflecting condensation to the photovoltaic cell of photovoltaic cell component, the energy value of the sunlight reflection received according to photovoltaic cell can adjust the distance between photovoltaic cell component and light reflecting device, the light distance that light reflecting device is reflexed on described photovoltaic cell changes, achieve the real-time adjustment of adjustment optically focused intensity, improve the efficiency of photovoltaic generation, expand the range of application of photovoltaic generation.In addition, described in the path clustering that the present invention can arrive ground according to sunlight, light reflecting device is in rotary moving, makes light reflecting device towards the sun (that is, enabling sun direct light reflection unit), to receive maximum light intensity.
As shown in Figure 2, this solar energy reflection concentration photovoltaic system comprises solar energy reflection concentration photovoltaic system in flow process shown in Fig. 1: light reflecting device 201, light energy receiver 202, Universal rotary device 203 and controller 204.
Light reflecting device 201 is fixed on described Universal rotary device 203, Universal rotary device 203 can drive light reflecting device 201 along arbitrary orientation rotate, with make light reflecting device 201 can the moment just to the sun.Light energy receiver 202 is fixed on the light reflection path of light reflecting device 201 by support 207.Support 207 is generally 3 to 4, and is tubular structure, for signal line wiring.
Light reflecting device 201 comprises: framework 205 and multiple speculum 206.Speculum 206 is with certain curvature, and multiple speculum 206 is arranged on framework 205 side by side, forms butterfly structure, as shown in Figure 2.
As shown in Figure 3, light energy receiver 202 comprises: shell 301, photovoltaic cell component and travel mechanism 304.Photovoltaic cell component comprises the element such as shutter 302 and photovoltaic cell 303 possessing printing opacity mouth 305.
Shutter 302 is generally ceramic material and makes, and is arranged on the opening part of shell 301; Photovoltaic cell 303 is just to printing opacity mouth 305, be arranged at the inside of shell 301, and photovoltaic cell 303 is fixed in travel mechanism 304, can along the direction telescopic moving of light reflection path under the driving of travel mechanism 304, the light distance that light reflecting device 201 is reflexed on photovoltaic cell changes.
As shown in Figure 3, travel mechanism 304 comprises screw rod 306 and stepping motor 307, and photovoltaic cell 303 is fixed on one end of screw rod 306, and under the driving of stepping motor 307, photovoltaic cell component can drive photovoltaic cell 303 to move around on the reflection path of light.In order to realize the function driving photovoltaic cell 303 to move around on light reflection path, travel mechanism 304 can also be the combination of tooth bar, gear and motor, or is the combination of slide rail and motor, and travel mechanism 304 of the present invention is not limited thereto.
As shown in Figure 2, controller 204 light energy receiver 202 and Universal rotary device 203 connect respectively, for driving moving horizontally and Universal rotary device 203 in rotary moving of the travel mechanism 304 in light energy receiver 202.Controller 204 can comprise travel mechanism's control unit and rotation control unit.Travel mechanism's control unit connects the stepping motor 307 of travel mechanism 304 by holding wire, and rotation control unit connects Universal rotary device 203 by holding wire.Need the inside of the support 207 through a hollow-core construction from the holding wire of controller 204 extraction, be then connected to stepping motor 307.Controller 204 can be PLC or single-chip microcomputer etc., and the present invention is not as limit.
Again as shown in Figure 2, Universal rotary device 203 comprises: vertically rotating mechanism 208 and horizontal rotary mechanism 209.Vertical rotating mechanism 208 is by a connection piece 210 connecting frame 205, and vertical rotating mechanism 208 rotates at vertical direction for driving light reflecting device 201.Horizontal rotary mechanism 209 is arranged on the below of vertical rotating mechanism 208, rotates in the horizontal direction for driving light reflecting device 201.The rotating shaft of vertical rotating mechanism 208 is axial vertical with the rotating shaft of horizontal rotary mechanism 209, constitutes dual-axis rotation structure.
In addition, reflection concentration type photovoltaic devices is also provided with the vertical post 213 fixed on the ground, be used for support level rotating mechanism 209 and on vertical rotational structure 208 and light reflecting device 201.
Fig. 2 and Fig. 3 describes the structure of solar energy reflection concentration photovoltaic system of the present invention in detail, describes the reflecting condensation method of solar energy reflection concentration photovoltaic system of the present invention below in conjunction with Fig. 1 in detail.
When step S101 specifically implements, because light reflecting device 201 inner surface is form side by side with multiple speculums 206 of certain curvature, light reflecting device 201 by sunlight reflecting condensation in light energy receiver 202, can be irradiated on the photovoltaic cell 303 of photovoltaic cell component.
The sun that the earth is observed on high in position be changing, every day, early morning, the sun comes up in the east, sets from west at dusk.It can thus be appreciated that sunlight arrives the path (Air Mass) on ground in constantly changing, the strongest illumination is received in order to make light reflecting device 201, need the orientation constantly adjusting light reflecting device 201 according to the path on sunlight arrival ground, therefore Universal rotary device of the present invention adopts dual-axis rotation structure to carry out solar tracking.
In foregoing description, for the sun in one day on high in position constantly change the continuous change that the sunlight that causes arrives the path on ground, the present invention drives light reflecting device 201 to rotate by Universal rotary device 203, to make light reflecting device 201 moment just to the sun, obtain the illumination of maximum intensity.
Based on above-mentioned purpose, when step S102 specifically implements, ephemeris information and perpetual calendar information is stored in controller 204, the position relationship (namely the sun each moment be irradiated to the path of solar energy reflection concentration photovoltaic system position) of solar energy reflection concentration photovoltaic system position at each moment and the sun is have recorded in ephemeris information, according to ephemeris information and perpetual calendar information, rotation control unit just can send rotation control information to vertical rotating mechanism 208 and horizontal rotary mechanism 209 in real time respectively, control light reflecting device 201 in rotary moving, make light reflecting device 201 towards the sun, enable sun direct light reflection unit, to receive maximum light intensity.
As shown in Figure 4, in communication process, there are total reflector space S1, usable reflection region S2, photo-thermal collecting zone S3 and photoelectric effective collecting zone S4 tetra-regions in sunlight.Wherein, the summation of the corresponding butterfly aperture area of total reflector space S1; Photoelectric effective collecting zone S4 fills the light-collecting area changed, i.e. the gross area of photovoltaic cell to completing photoelectricity; After the reflection of usable reflection region S2 correspondence, light can enter the corresponding reflector area of photoelectric effective collecting zone S4; The light that the corresponding total reflector space S1 of photo-thermal collecting zone S3 reflects arrives the region of light energy receiver place plane and the difference of photoelectric effective collecting zone S4.
In one day the sun on high in the continuous change of position make the distance of the sun and light reflecting device 201 in continuous change, the distance of the sun and light reflecting device 201 is long with afternoon function in the morning, and the shortest during high noon.Among one day, the change of DNI as shown in Figure 5 (under the cloudless condition of fine day).And the Various Seasonal in annual, the distance of the sun and light reflecting device 201 is also in continuous change, and summer can closer to light reflecting device 201 than winter.Sunlight through the ozone that can be subject in air during atmosphere, carbon dioxide, the impact of the compositions such as suspension grit and steam and decaying.The attenuation degree of DNI has direct relation with sunlight through atmospheric path length, and path is shorter, and the degree of decay is less.So, the distance of the sun and light reflecting device 201 changes the light intensity that light reflecting device 201 is received and is changing, when in the fixed situation in the position of photovoltaic cell component, the area of usable reflection region S2 is constant, the light intensity that photovoltaic cell receives, in change, finally makes the electric energy of solar energy reflection concentration photovoltaic system export and is affected.
During the changing with the distance of light reflecting device 201 of photovoltaic cell component, the light of speculum 206 reflection of light reflecting device 201 enters photovoltaic cell ratio and will change (become large or diminish), namely usable reflection region S2 will change, so the distance by changing photovoltaic cell component and light reflecting device 201, the distance can corrected due to the sun and light reflecting device 201 changes the electric energy output caused, and the electric energy of solar energy reflection concentration photovoltaic system is exported and tends towards stability.In other words, in order to solve the problem, when DNI changes, by change the area (namely changing light concentrating times) of the usable reflection region S2 of reflection concentration type photovoltaic devices thus the electric energy farthest alleviating system export suffered by impact.
Step S103 in the specific implementation, the distance of photovoltaic cell component and light reflecting device 201 can be adjusted in real time by the energy changing measuring photovoltaic cell, in the present embodiment, detected temperatures can be generated by carrying out detection to the temperature of photovoltaic cell 303, adjust the distance between photovoltaic cell component and light reflecting device 201 according to the difference of detected temperatures and rated temperature; Also can generate detection energy output by carrying out detection to the energy output of photovoltaic cell 303, adjust the distance between photovoltaic cell component and light reflecting device 201 according to the difference detecting energy output and rated generation amount.
As shown in Figure 6, when adjusting the distance between photovoltaic cell component and light reflecting device 201 by detected temperatures, photovoltaic cell component is arranged in the light path between light reflecting device 201 and this light reflecting device focus 601.
The detected temperatures of photovoltaic cell 303 and rated temperature are compared, if detected temperatures is greater than rated temperature, then shortens the distance between photovoltaic cell component and light reflecting device 201, move along A direction as shown in Figure 6.If detected temperatures is less than rated temperature, then increases the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 6.
The detected temperatures obtaining photovoltaic cell 303 can have various ways, such as, by the temperature of infrared detecting set detection photovoltaic cell, or passes through the water temperature of the circulating cooling water-to-water heat exchanger near thermometer measure photovoltaic cell.
As shown in Figure 6, during by detecting the distance between generation adjustment photovoltaic cell component and light reflecting device 201, photovoltaic cell component is arranged in the light path between light reflecting device 201 and this light reflecting device focus 601.
The detection energy output of photovoltaic cell 303 and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then shortens the distance between photovoltaic cell component and light reflecting device 201, move along A direction as shown in Figure 6.If detect energy output to be less than rated generation amount, then increase the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 6.
Obtain the detection energy output of photovoltaic cell 303 and can have various ways, such as in the electric quantity output end of photovoltaic cell component by electric energy metrical measurement amount electric current, do not repeat them here.
When step S104 specifically implements, the transform light energy of the sunlight reflection received is electric energy by photovoltaic cell 303, then exports electric energy by electric quantity output end.
As shown in Figure 7, the solar energy reflection concentration photovoltaic system of the present embodiment comprises: light reflecting device 701, rotating control assembly 702, light are apart from adjusting device 703 and photovoltaic cell 704.
Light reflecting device 701 is condensed to the photovoltaic cell 704 of photovoltaic cell component for reflected sunlight and by the sunlight of reflection; Rotating control assembly 702 is in rotary moving for the path clustering light reflecting device 701 arriving ground according to sunlight, makes light reflecting device 701 towards the sun, enables sun direct light reflection unit, to receive maximum light intensity; Light is apart from adjusting device 703 for the distance (namely adjusting distance between photovoltaic cell component and light reflecting device 701 by controlling travel mechanism 304) between the energy value adjustment photovoltaic cell component of sunlight reflection that receives according to photovoltaic cell 704 and light reflecting device 701, and the light distance that light reflecting device 701 is reflexed on photovoltaic cell 704 changes; The transform light energy that the sunlight received reflects by photovoltaic cell 704 is electric energy.Wherein, the function of rotating control assembly 702 and light distance adjusting device 703 corresponds respectively to travel mechanism's control unit of controller 204 and the function of rotation control unit.
As shown in Figure 8, light comprises apart from adjusting device 703: temperature detecting unit 801, energy output detecting unit 802 and distance controlling unit 803.
Temperature detecting unit 801 generates detected temperatures for carrying out detection to the temperature of described photovoltaic cell; Energy output detecting unit 802 generates detection energy output for carrying out detection to the energy output of described photovoltaic cell; Distance controlling unit 803 for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature, or adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference detecting energy output and rated generation amount.
As shown in Figure 6, by detected temperatures adjustment photovoltaic cell component and light reflecting device 201(and light reflecting device 701) between distance time, photovoltaic cell component is arranged in the light path between light reflecting device 201 and the focus of this light reflecting device.
The detected temperatures of photovoltaic cell and rated temperature compare by distance controlling unit 803, if detected temperatures is greater than rated temperature (DNI is greater than rated value), then shorten the distance between photovoltaic cell component and light reflecting device 201; If detected temperatures is less than rated temperature (DNI is less than rated value), then increase the distance between photovoltaic cell component and light reflecting device 701.
As shown in Figure 6, during by detecting the distance between generation adjustment photovoltaic cell component and light reflecting device 201, photovoltaic cell component is arranged in the light path between light reflecting device 201 and the focus of this light reflecting device.
The detection energy output of photovoltaic cell 704 and rated generation amount compare by distance controlling unit 803, if detect energy output to be greater than rated generation amount (DNI is greater than rated value), then shorten the distance between photovoltaic cell component and light reflecting device 701; If detect energy output to be less than rated generation amount (DNI is less than rated value), then increase the distance between photovoltaic cell component and light reflecting device 201.
It should be noted that adjustment photovoltaic cell component away from or in the process of light reflecting device 201, need to ensure that the luminous energy total amount received at photoelectric effective collecting zone S4 should be not more than the maximum of specified permission.
In sum, the present invention can adjust optically focused intensity in real time by regulating the distance between photovoltaic cell and light reflecting device, improves the efficiency of photovoltaic generation, expands the range of application of photovoltaic generation.
The present invention can also adjust the position of light reflecting device in real time according to the position of the sun, make light reflecting device just to the sun, to receive maximum light intensity.
Embodiment two
As shown in Figure 1, the present embodiment provides a kind of reflecting condensation method of solar energy reflection concentration photovoltaic system, and the reflecting condensation method of this solar energy reflection concentration photovoltaic system comprises:
Step S101: adopt light reflecting device by sunlight reflecting condensation on the photovoltaic cell of photovoltaic cell component;
Step S102: light reflecting device is in rotary moving according to the path clustering on sunlight arrival ground, makes described light reflecting device towards the sun;
Step S103: the energy value of the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, makes described light reflecting device reflex to light on described photovoltaic cell apart from changing;
Step S104: the transform light energy that the sunlight received reflects by described photovoltaic cell is electric energy.
Flow process is as shown in Figure 1 known, in the present embodiment, light reflecting device is by after on sunlight reflecting condensation to the photovoltaic cell of photovoltaic cell component, the energy value of the sunlight reflection received according to photovoltaic cell can adjust the distance between photovoltaic cell component and light reflecting device, the light distance that light reflecting device is reflexed on described photovoltaic cell changes, achieve the real-time adjustment of adjustment optically focused intensity, improve the efficiency of photovoltaic generation, expand the range of application of photovoltaic generation.In addition, described in the path clustering that the present invention can arrive ground according to sunlight, light reflecting device is in rotary moving, makes light reflecting device towards the sun (that is, enabling sun direct light reflection unit), to receive maximum light intensity.
As shown in Figure 2, this solar energy reflection concentration photovoltaic system comprises solar energy reflection concentration photovoltaic system in flow process shown in Fig. 1: light reflecting device 201, light energy receiver 202, Universal rotary device 203 and controller 204.
Light reflecting device 201 is fixed on described Universal rotary device 203, whirligig 203 can drive light reflecting device 201 along arbitrary orientation rotate, with make light reflecting device 201 can the moment just to the sun.Light energy receiver 202 is fixed on the light reflection path of light reflecting device 201 by support 207.Support 207 is generally 3 to 4, and is tubular structure, for signal line wiring.
Light reflecting device 201 comprises: framework 205 and multiple speculum 206.Speculum 206 is with certain curvature, and multiple speculum 206 is arranged on framework 205 side by side, forms butterfly structure, as shown in Figure 2.
As shown in Figure 3, light energy receiver 202 comprises: shell 301, photovoltaic cell component and travel mechanism 304.Photovoltaic cell component comprises the element such as shutter 302 and photovoltaic cell 303 possessing printing opacity mouth 305.
Shutter 302 is generally ceramic material and makes, and is arranged on the opening part of shell 301; Photovoltaic cell 303 is just to printing opacity mouth 305, be arranged at the inside of shell 301, and photovoltaic cell 303 is fixed in travel mechanism 304, can along the direction telescopic moving of light reflection path under the driving of travel mechanism 304, the light distance that light reflecting device 201 is reflexed on photovoltaic cell changes.
As shown in Figure 3, travel mechanism 304 comprises screw rod 306 and stepping motor 307, and photovoltaic cell 303 is fixed on one end of screw rod 306, and under the driving of stepping motor 307, photovoltaic cell component can drive photovoltaic cell 303 to move around on the reflection path of light.In order to realize the function driving photovoltaic cell 303 to move around on light reflection path, travel mechanism 304 can also be the combination of tooth bar, gear and motor, or is the combination of slide rail and motor, and travel mechanism 304 of the present invention is not limited thereto.
As shown in Figure 2, controller 204 is connected respectively with light energy receiver 202 and Universal rotary device 203, for driving moving horizontally and Universal rotary device 203 in rotary moving of the travel mechanism 304 of light energy receiver 202.Controller 204 can comprise travel mechanism's control unit and rotation control unit.Travel mechanism's control unit connects the stepping motor 307 of travel mechanism 304 by holding wire, and rotation control unit connects Universal rotary device 203 by holding wire.Need the inside of the support 207 through a hollow-core construction from the holding wire of controller 204 extraction, be then connected to stepping motor 307.Controller 204 can be PLC or single-chip microcomputer etc., and the present invention is not as limit.
Again as shown in Figure 2, Universal rotary device 203 comprises: vertically rotating mechanism 208 and horizontal rotary mechanism 209.Vertical rotating mechanism 208 is by a connection piece 210 connecting frame 205, and vertical rotating mechanism 208 rotates at vertical direction for driving light reflecting device 201.Horizontal rotary mechanism 209 is arranged on the below of vertical rotating mechanism 208, rotates in the horizontal direction for driving light reflecting device 201.The rotating shaft of vertical rotating mechanism 208 is axial vertical with the rotating shaft of horizontal rotary mechanism 209, constitutes dual-axis rotation structure.
In addition, reflection concentration type photovoltaic devices is also provided with the vertical post 213 fixed on the ground, be used for support level rotating mechanism 209 and on vertical rotational structure 208 and light reflecting device 201.
Fig. 2 and Fig. 3 describes the structure of solar energy reflection concentration photovoltaic system of the present invention in detail, describes the reflecting condensation method of solar energy reflection concentration photovoltaic system of the present invention below in conjunction with Fig. 1 in detail.
When step S101 specifically implements, because light reflecting device 201 inner surface is form side by side with multiple speculums 206 of certain curvature, light reflecting device 201 by sunlight reflecting condensation in light energy receiver 202, can be irradiated on the photovoltaic cell 303 of photovoltaic cell component.
The sun that the earth is observed on high in position be changing, every day, early morning, the sun comes up in the east, sets from west at dusk.It can thus be appreciated that sunlight arrives the path (Air Mass) on ground in constantly changing, the strongest illumination is received in order to make light reflecting device 201, need the orientation constantly adjusting light reflecting device 201 according to the path on sunlight arrival ground, therefore Universal rotary device of the present invention adopts dual-axis rotation structure to carry out solar tracking.
In foregoing description, for the sun in one day on high in position constantly change the continuous change that the sunlight that causes arrives the path on ground, the present invention drives light reflecting device 201 to rotate by Universal rotary device 203, to make light reflecting device 201 moment just to the sun, obtain the illumination of maximum intensity.
Based on above-mentioned purpose, when step S102 specifically implements, ephemeris information and perpetual calendar information is stored in controller 204, the position relationship (namely the sun each moment be irradiated to the path of solar energy reflection concentration photovoltaic system position) of solar energy reflection concentration photovoltaic system position at each moment and the sun is have recorded in ephemeris information, according to ephemeris information and perpetual calendar information, rotation control unit just can send rotation control information to vertical rotating mechanism 208 and horizontal rotary mechanism 209 in real time respectively, control light reflecting device 201 in rotary moving, make light reflecting device 201 towards the sun, enable sun direct light reflection unit, to receive maximum light intensity.
As shown in Figure 4, in communication process, there are total reflector space S1, usable reflection region S2, photo-thermal collecting zone S3 and photoelectric effective collecting zone S4 tetra-regions in sunlight.Wherein, the summation of the corresponding butterfly aperture area of total reflector space S1; Photoelectric effective collecting zone S4 fills the light-collecting area changed, i.e. the gross area of photovoltaic cell to completing photoelectricity; After the reflection of usable reflection region S2 correspondence, light can enter the corresponding reflector area of photoelectric effective collecting zone S4; The light that the corresponding total reflector space S1 of photo-thermal collecting zone S3 reflects arrives the region of light energy receiver place plane and the difference of photoelectric effective collecting zone S4.
In one day the sun on high in the continuous change of position make the distance of the sun and light reflecting device 201 in continuous change, the distance of the sun and light reflecting device 201 is long with afternoon function in the morning, and the shortest during high noon.Among one day, the change of DNI as shown in Figure 5 (under the cloudless condition of fine day).And the Various Seasonal in annual, the distance of the sun and light reflecting device 201 is also in continuous change, and summer can closer to light reflecting device 201 than winter.Sunlight through the ozone that can be subject in air during atmosphere, carbon dioxide, the impact of the compositions such as suspension grit and steam and decaying.The attenuation degree of DNI has direct relation with sunlight through atmospheric path length, and path is shorter, and the degree of decay is less.So, the distance of the sun and light reflecting device 201 changes the light intensity that light reflecting device 201 is received and is changing, when in the fixed situation in the position of photovoltaic cell component, the area of usable reflection region S2 is constant, the light intensity that photovoltaic cell receives, in change, finally makes the electric energy of solar energy reflection concentration photovoltaic system export and is affected.
During the changing with the distance of light reflecting device 201 of photovoltaic cell component, the light of speculum 206 reflection of light reflecting device 201 enters photovoltaic cell ratio and will change (become large or diminish), namely usable reflection region S2 will change, so the distance by changing photovoltaic cell component and light reflecting device 201, the distance can corrected due to the sun and light reflecting device 201 changes the electric energy output caused, and the electric energy of solar energy reflection concentration photovoltaic system is exported and tends towards stability.In other words, in order to solve the problem, when DNI changes, by change the area (namely changing light concentrating times) of the usable reflection region S2 of reflection concentration type photovoltaic devices thus the electric energy farthest alleviating system export suffered by impact.
Step S103 in the specific implementation, the distance of photovoltaic cell component and light reflecting device 201 can be adjusted in real time by the energy changing measuring photovoltaic cell, in the present embodiment, detected temperatures can be generated by carrying out detection to the temperature of photovoltaic cell 303, adjust the distance between photovoltaic cell component and light reflecting device 201 according to the difference of detected temperatures and rated temperature; Also can generate detection energy output by carrying out detection to the energy output of photovoltaic cell 303, adjust the distance between photovoltaic cell component and light reflecting device 201 according to the difference detecting energy output and rated generation amount.
As shown in Figure 9, when adjusting the distance between photovoltaic cell component and light reflecting device 201 by detected temperatures, between the focus 601 photovoltaic cell component being arranged at light reflecting device 201 and this light reflecting device light path extended line on, make the focus 601 of this light reflecting device 201 between photovoltaic cell component and light reflecting device 201.
The detected temperatures of photovoltaic cell 303 and rated temperature are compared, if detected temperatures is greater than rated temperature, then increases the distance between photovoltaic cell component and light reflecting device 201, move along A direction as shown in Figure 9.If detected temperatures is less than rated temperature, then shortens the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 9.
The detected temperatures obtaining photovoltaic cell 303 can have various ways, such as, by the temperature of infrared detecting set detection photovoltaic cell, or passes through the water temperature of the circulating cooling water-to-water heat exchanger near thermometer measure photovoltaic cell.
As shown in Figure 9, during by detecting the distance between generation adjustment photovoltaic cell component and light reflecting device 201, between the focus 601 photovoltaic cell component being arranged at light reflecting device 201 and this light reflecting device light path extended line on, make the focus 601 of this light reflecting device 201 between photovoltaic cell component and light reflecting device 201.
The detection energy output of photovoltaic cell 303 and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then increases the distance between photovoltaic cell component and light reflecting device 201, move along A direction as shown in Figure 9.If detect energy output to be less than rated generation amount, then shorten the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 9.
Obtain the detection energy output of photovoltaic cell 303 and can have various ways, such as in the electric quantity output end of photovoltaic cell component by electric energy metrical measurement amount electric current, do not repeat them here.
When step S104 specifically implements, the transform light energy of the sunlight reflection received is electric energy by photovoltaic cell 303, then exports electric energy by electric quantity output end.
As shown in Figure 7, the solar energy reflection concentration photovoltaic system of the present embodiment comprises: light reflecting device 701, rotating control assembly 702, light are apart from adjusting device 703 and photovoltaic cell 704.
Light reflecting device 701 is condensed to the photovoltaic cell 704 of photovoltaic cell component for reflected sunlight and by the sunlight of reflection; Rotating control assembly 702 is in rotary moving for the path clustering light reflecting device 701 arriving ground according to sunlight, makes light reflecting device 701 towards the sun, enables sun direct light reflection unit, to receive maximum light intensity; Light is apart from adjusting device 703 for the distance (namely adjusting distance between photovoltaic cell component and light reflecting device 701 by controlling travel mechanism 304) between the energy value adjustment photovoltaic cell component of sunlight reflection that receives according to photovoltaic cell 704 and light reflecting device 701, and the light distance that light reflecting device 701 is reflexed on photovoltaic cell 704 changes; The transform light energy that the sunlight received reflects by photovoltaic cell 704 is electric energy.Wherein, the function of rotating control assembly 702 and light distance adjusting device 703 corresponds respectively to travel mechanism's control unit of controller 204 and the function of rotation control unit.
As shown in Figure 8, light comprises apart from adjusting device 703: temperature detecting unit 801, energy output detecting unit 802 and distance controlling unit 803.
Temperature detecting unit 801 generates detected temperatures for carrying out detection to the temperature of described photovoltaic cell; Energy output detecting unit 802 generates detection energy output for carrying out detection to the energy output of described photovoltaic cell; Distance controlling unit 803 for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature, or adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference detecting energy output and rated generation amount.
As shown in Figure 9, when adjusting the distance between photovoltaic cell component and light reflecting device 201 by detected temperatures, between the focus 601 that photovoltaic cell component is arranged at light reflecting device 201 and this light reflecting device light path extended line on, make the focus 601 of this light reflecting device 201 between photovoltaic cell component and light reflecting device 201.
The detected temperatures of photovoltaic cell and rated temperature compare by distance controlling unit 803, if detected temperatures is greater than rated temperature (DNI is greater than rated value), then increase the distance between photovoltaic cell component and light reflecting device 701, move along A direction as shown in Figure 9; If detected temperatures is less than rated temperature (DNI is less than rated value), then shortens the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 9.
As shown in Figure 9, during by detecting the distance between generation adjustment photovoltaic cell component and light reflecting device 201, between the focus 601 that photovoltaic cell component is arranged at light reflecting device 201 and this light reflecting device light path extended line on, make the focus 601 of this light reflecting device 201 between photovoltaic cell component and light reflecting device 201.
The detection energy output of photovoltaic cell 704 and rated generation amount compare by distance controlling unit 803, if detect energy output to be greater than rated generation amount (DNI is greater than rated value), then shorten the distance between photovoltaic cell component and light reflecting device 701, move along A direction as shown in Figure 9; If detect energy output to be less than rated generation amount (DNI is less than rated value), then increase the distance between photovoltaic cell component and light reflecting device 201, move along B direction as shown in Figure 9.
It should be noted that adjustment photovoltaic cell component away from or in the process of light reflecting device 201, need to ensure that the luminous energy total amount received at photoelectric effective collecting zone S4 should be not more than the maximum of specified permission.
In sum, the present invention can adjust optically focused intensity in real time by regulating the distance between photovoltaic cell and light reflecting device, improves the efficiency of photovoltaic generation, expands the range of application of photovoltaic generation.
The present invention can also adjust the position of light reflecting device in real time according to the position of the sun, make light reflecting device just to the sun, to receive maximum light intensity.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Apply specific embodiment in the present invention to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. a reflecting condensation method for solar energy reflection concentration photovoltaic system, is characterized in that, described method comprises:
Adopt light reflecting device by sunlight reflecting condensation on the photovoltaic cell of photovoltaic cell component;
According to the path clustering on sunlight arrival ground, light reflecting device is in rotary moving, makes described light reflecting device towards the sun;
The energy value of the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, makes described light reflecting device reflex to light on described photovoltaic cell apart from changing;
The transform light energy that the sunlight received reflects by described photovoltaic cell is electric energy;
Wherein, the distance that the energy value of the sunlight reflection received according to described photovoltaic cell component adjusts between described photovoltaic cell component and described light reflecting device comprises: carry out detection to the temperature of described photovoltaic cell and generate detected temperatures, adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature.
2. method according to claim 1, is characterized in that, described method comprises: be arranged at by described photovoltaic cell component in the light path between described light reflecting device and this light reflecting device focus;
The detected temperatures of described photovoltaic cell and rated temperature are compared, if detected temperatures is greater than rated temperature, then shortens the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device.
3. method according to claim 1, it is characterized in that, described method comprises: be arranged at by described photovoltaic cell component on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device;
The detected temperatures of described photovoltaic cell part and rated temperature are compared, if detected temperatures is greater than rated temperature, then increases the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device.
4. a reflecting condensation method for solar energy reflection concentration photovoltaic system, is characterized in that, described method comprises:
Adopt light reflecting device by sunlight reflecting condensation on the photovoltaic cell of photovoltaic cell component;
According to the path clustering on sunlight arrival ground, light reflecting device is in rotary moving, makes described light reflecting device towards the sun;
The energy value of the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, makes described light reflecting device reflex to light on described photovoltaic cell apart from changing;
The transform light energy that the sunlight received reflects by described photovoltaic cell is electric energy;
Wherein, the distance that the energy value of the sunlight reflection received according to described photovoltaic cell component adjusts between described photovoltaic cell component and described light reflecting device comprises: carry out to the energy output of described photovoltaic cell detections and generate and detect energy output, adjusts the distance between described photovoltaic cell component and described light reflecting device according to the difference of detection energy output and rated generation amount.
5. method according to claim 4, is characterized in that, described method comprises: be arranged at by described photovoltaic cell component in the light path between described light reflecting device and this light reflecting device focus;
The detection energy output of described photovoltaic cell and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then shortens the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device.
6. method according to claim 4, it is characterized in that, described method comprises: be arranged at by described photovoltaic cell component on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device;
The detection energy output of described photovoltaic cell part and rated generation amount are compared, if detect energy output to be greater than rated generation amount, then increases the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device.
7. a solar energy reflection concentration photovoltaic system, is characterized in that, described system comprises:
Light reflecting device, is condensed to the photovoltaic cell of photovoltaic cell component for reflected sunlight and by the sunlight of reflection;
Rotating control assembly, in rotary moving for light reflecting device according to the path clustering on sunlight arrival ground, make described light reflecting device towards the sun;
Light is apart from adjusting device, and the energy value for the sunlight reflection received according to described photovoltaic cell adjusts the distance between described photovoltaic cell component and described light reflecting device, and the light distance that described light reflecting device is reflexed on described photovoltaic cell changes;
Described photovoltaic cell, the transform light energy reflected by the sunlight received is electric energy;
Wherein, described light comprises further apart from adjusting device:
Temperature detecting unit, generates detected temperatures for carrying out detection to the temperature of described photovoltaic cell,
Distance controlling unit, for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference of detected temperatures and rated temperature.
8. system according to claim 7, is characterized in that, described light comprises further apart from adjusting device:
Energy output detecting unit, generate detection energy output for carrying out detection to the energy output of described photovoltaic cell, described distance controlling unit is for adjusting the distance between described photovoltaic cell component and described light reflecting device according to the difference detecting energy output and rated generation amount.
9. system according to claim 7, is characterized in that, described photovoltaic cell component is arranged in the light path between described light reflecting device and this light reflecting device focus;
The detected temperatures of described photovoltaic cell and rated temperature compare by described distance controlling unit, if detected temperatures is greater than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device.
10. system according to claim 7, it is characterized in that, described photovoltaic cell component is arranged on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device;
The detected temperatures of described photovoltaic cell and rated temperature compare by described distance controlling unit, if detected temperatures is greater than rated temperature, then increase the distance between described photovoltaic cell component and described light reflecting device; If detected temperatures is less than rated temperature, then shorten the distance between described photovoltaic cell component and described light reflecting device.
11. systems according to claim 8, is characterized in that, described photovoltaic cell component is arranged in the light path between described light reflecting device and this light reflecting device focus;
The detection energy output of described photovoltaic cell and rated generation amount compare by described distance controlling unit, if detect energy output to be greater than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device.
12. systems according to claim 8, it is characterized in that, described photovoltaic cell component is arranged on the extended line of light path between described light reflecting device and this light reflecting device focus, makes this light reflecting device focus between described photovoltaic cell component and described light reflecting device;
The detection energy output of described photovoltaic cell and rated generation amount compare by described distance controlling unit, if detect energy output to be greater than rated generation amount, then increase the distance between described photovoltaic cell component and described light reflecting device; If detect energy output to be less than rated generation amount, then shorten the distance between described photovoltaic cell component and described light reflecting device.
13. 1 kinds of solar energy reflection concentration photovoltaic systems, it is characterized in that, described system comprises: light reflecting device, light energy receiver, Universal rotary device and controller, described light reflecting device is fixed on described Universal rotary device, and can rotate along arbitrary orientation, described light energy receiver is fixed on the light reflection path of described light reflecting device by support;
Described light reflecting device comprises: framework and multiple speculum; Described multiple speculum is installed on said frame side by side, forms butterfly structure;
Described light energy receiver comprises: shell, travel mechanism, possess and be provided with the shutter of printing opacity mouth and the photovoltaic cell component of photovoltaic cell; Described shutter is arranged on the opening part of described shell; Described photovoltaic cell is just being arranged at the inside of described shell to described printing opacity mouth, and be fixed in described travel mechanism, move along the direction of light reflection path under the driving of described travel mechanism, the light distance that described light reflecting device is reflexed on described photovoltaic cell changes;
Travel mechanism described in described controller connects and Universal rotary device, for driving described travel mechanism and Universal rotary device.
14. systems according to claim 13, is characterized in that, described controller comprises:
Travel mechanism's control unit, the travel mechanism described in connection, for the travel mechanism according to the power driving of direct solar radiation energy; Rotation control unit, the Universal rotary device described in connection, for adjusting the orientation of described light reflecting device in real time according to the position of the sun.
15. systems according to claim 14, is characterized in that, described travel mechanism comprises: screw rod and motor, or comprise: tooth bar, gear and motor.
16. systems according to claim 14, is characterized in that, described Universal rotary device comprises:
Vertical rotating mechanism, the framework described in being connected by a connection piece, is rotated at vertical direction for driving described light reflecting device;
Horizontal rotary mechanism, being arranged on below described vertical rotating mechanism, rotating in the horizontal direction for driving described light reflecting device.
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