CN111474962A - Optimization method of installation angle of solar double-sided photovoltaic module and pitching tracking system - Google Patents
Optimization method of installation angle of solar double-sided photovoltaic module and pitching tracking system Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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- G05D3/12—Control of position or direction using feedback
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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Abstract
The invention provides an optimization method of a solar double-sided photovoltaic module installation angle suitable for up-down double-row installation and a solar double-sided photovoltaic module pitching tracking system, wherein the optimization method comprises the steps of (1) obtaining an initial reference inclination angle α0(ii) a (2) Calculating total irradiation intensity H of double-sided photovoltaic module1 Total、H2 TotalCalculating according to the illumination intensity data of the front and the back of the two groups of double-sided photovoltaic modules to obtain H1 Total、H2 TotalFinding the optimal installation angle at α0On the basis of the two groups of double-sided photovoltaic modules, H1 TotalAnd H2 TotalWill change until H1 TotalAnd H2 TotalMaximum value, actual inclination angle α of two current groups of double-sided photovoltaic modules1、α2The optimal installation angle is obtained; the invention carries out cooperative control between the installation height and the rotation angle,the double-sided photovoltaic modules with different mounting heights are adjusted to the optimal mounting angle, and the generated energy is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to an optimization method of an installation angle of a solar double-sided photovoltaic module installed in an upper row and a lower row and a pitching tracking system of the solar double-sided photovoltaic module.
Background
The double-sided photovoltaic module is a solar module capable of realizing power generation on the front side and the back side, and the back side of the double-sided photovoltaic module can generate power by utilizing reflected light of an installation site and scattered light of the surrounding environment.
The front side and the back side of the double-sided photovoltaic module can generate electricity, so that the generating capacity per unit area can be effectively improved compared with a single-sided module, and if the installation angle of a double-sided photovoltaic module generating system is optimized, the generating capacity can be further improved.
At present, a conventional flat single-axis tracking system only considers front irradiation of photovoltaic modules, for example, chinese patent document No. 201310024307.0 discloses a method and a system for tracking a solar track of a photovoltaic generator, and provides an anti-tracking track method for avoiding shadow shielding between adjacent photovoltaic modules.
Compared with the radiation model of the conventional photovoltaic module, the radiation model also needs to consider the influence of the installation height of the module and environmental factors, and the main influencing factors are as follows: surface reflectivity, installation height, rotation angle, assembly interval, latitude, direct radiation and scattering proportion and the like.
In the prior art, an obvious height difference exists between the ground clearance of the upper row of photovoltaic modules and the lower row of photovoltaic modules, and the installation inclination of the two groups of photovoltaic modules is consistent. For the upper and lower rows of double-sided systems with different installation heights, due to different back surface reflectivities, the optimal inclination angles of the upper and lower rows of components are respectively arranged in order to achieve the maximum power generation capacity of the system.
Chinese patent application No. 201811157770.1 discloses a preferred method for tracking the angle of a double-sided assembly, but does not consider the difference in reflectivity between the upper and lower rows to set the optimum tilt angle.
The inventor carries out cooperative control between the installation height and the rotation angle, provides an optimization method of the installation angle of the solar double-sided photovoltaic module and a pitch tracking system of the solar double-sided photovoltaic module, which are suitable for up-down double-row installation, and enables the modules with different heights to respectively reach the optimal inclination angle.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an optimization method of the installation angle of a solar double-sided photovoltaic module suitable for up-down double-row installation and a solar double-sided photovoltaic module pitching tracking system.
The specific technical scheme of the invention is as follows:
the invention provides an optimization method for the installation angle of a solar double-sided photovoltaic module installed in an upper row and a lower row, wherein the optimization method comprises the following steps:
(1) acquiring an initial reference inclination angle;
obtaining the azimuth angle and the altitude angle of the current sun through an astronomical algorithm, and calculating the benchmark inclination angle α at the current position0；
(2) Calculating total irradiation intensity H of double-sided photovoltaic module1 Total、H2 Total；
Respectively arranging two groups of double-sided photovoltaic modules in an upper row and a lower row at reference inclination angles α0Installing, and calculating the total irradiation intensity H of the two-sided photovoltaic module according to the illumination intensity data of the front side and the back side of the two-sided photovoltaic module1 Total、H2 Total；
H1 Total＝H1 is just+Bi·H1 Back of body；
H2 Total＝H2 is just+Bi·H2 Back of body；
Wherein Bi is a bifacial factor of the bifacial photovoltaic module, H1 is just、H1 Back of body、H2 is just、H2 Back of bodyRespectively obtaining the illumination intensity data of the front and back of the two groups of double-sided photovoltaic modules;
(3) searching for an optimal installation angle;
at reference inclination angle α0On the basis of the two groups of double-sided photovoltaic modules, H1 TotalAnd H2 TotalWill change until H1 TotalAnd H2 TotalMaximum value, actual inclination angle α of two current groups of double-sided photovoltaic modules1、α2I.e. the optimum mounting angle.
According to the technical scheme, the current solar azimuth angle and altitude angle are obtained through the astronomical algorithm, the reference inclination angle at the current position is calculated, the process can provide an angle basis for initial installation, and a relatively proper installation angle is obtained, so that the process of quickly searching the optimal installation angle is facilitated.
Furthermore, the total irradiation intensity H of the two groups of double-sided photovoltaic modules is carried out through the collected illumination intensity data of the front side and the back side of the two groups of double-sided photovoltaic modules1 Total、H2 TotalAnd (4) calculating.
Specifically, the installation angles of the two groups of double-sided photovoltaic modules can be independently adjusted, the installation angles between the two groups of double-sided photovoltaic modules are not influenced by each other, the ground clearance of the double-sided photovoltaic modules positioned on the upper row is relatively larger (compared with that of the double-sided photovoltaic modules positioned on the lower row) in the double-sided photovoltaic modules arranged on the upper row and the lower row, at the moment, the optimal installation angle of the double-sided photovoltaic modules positioned on the upper row is relatively smaller, because the double-sided photovoltaic modules have a certain area, a non-negligible height difference exists between the double-sided photovoltaic modules arranged on the upper row and the lower row, according to data statistics, when the height difference is 2 meters and the back reflectivity is 50%, the optimal installation angle difference of the two groups of double-sided photovoltaic modules is close to 10%, and if the optimal inclination angles are not respectively arranged on. The method is calculated according to 1172 hundred million kilowatt hours of national photovoltaic power generation in 2019, is calculated according to 0.5 yuan per watt electricity, and is adopted according to a 20% national photovoltaic system, so that 1.6408 million yuan can be saved.
According to the optimization method, the installation angles of the upper row of double-sided photovoltaic modules and the lower row of double-sided photovoltaic modules are independently adjusted, so that the upper row of double-sided photovoltaic modules and the lower row of double-sided photovoltaic modules are at the respective optimal installation angles, the generated energy of the whole double-sided photovoltaic system is higher, and particularly for a system with high back surface emissivity and high module double-sided factors, the generated energy improving effect is more obvious, so that the power generation efficiency is maximized.
In the invention, the illumination intensity data of the front and back sides of the two groups of double-sided photovoltaic modules in the step (2) are acquired in real time through a plurality of irradiation sensors, or are accessed into a database with the illumination intensity information of the installation position, for example, the illumination intensity data are stored after the information is acquired through the irradiation sensors (for example, 3-4 years), the irradiation sensors can be removed after the operation, and the operation can be directly guided according to the previously acquired illumination intensity data.
As a preferred scheme of the present invention, two sets of double-sided photovoltaic modules are installed as follows: the double-sided photovoltaic module is provided with a rotary fulcrum located between the two groups of double-sided photovoltaic modules, and the two groups of double-sided photovoltaic modules can respectively rotate around the rotary fulcrum to find the optimal installation angle.
The rotary fulcrum can be in the form of a single torque tube, or can be in the form of two rotary shafts or rotary rods which do not interfere with each other.
As a preferable scheme of the invention, an automatic driving device is arranged to drive the two groups of double-sided photovoltaic modules to respectively rotate around the rotating fulcrum.
The automatic driving device preferably drives the two groups of double-sided photovoltaic modules to perform rotary motion at slow and gradual speeds, and in the process, the irradiation sensor has enough time to acquire the illumination intensity data of the front and the back of the double-sided photovoltaic modules so as to calculate the total irradiation intensity H of the double-sided photovoltaic modules1 Total、H2 TotalAnd then the two groups of double-sided photovoltaic modules are all in the best installation angle.
Specifically, the automatic driving device performs an automatic search process at a set time interval, for example, 10 minutes or even shorter, and changes or switches according to a specific scene;
further, the automatic driving device drives the double-sided photovoltaic module to rotate not only towards one direction, but also at least once in the area close to the optimal installation angle position, so that the double-sided photovoltaic module is in the optimal installation angle of the single search period.
The invention also provides a solar double-sided photovoltaic module pitching tracking system which is arranged in an upper row and a lower row, wherein the solar double-sided photovoltaic module pitching tracking system comprises:
a column;
the first supporting beam and the second supporting beam are used for placing the double-sided photovoltaic module;
a drive device; and
the detection device is used for acquiring irradiation intensity data;
the upright post is provided with a torque tube, the torque tube provides a pitching rotation pivot for pitching and turning for the first supporting beam and the second supporting beam, one edge of the first supporting beam is hinged with the torque tube, and one edge of the second supporting beam is hinged with the torque tube;
the driving device is used for controlling the pitching angle of the first supporting beam and the second supporting beam and comprises a first driver and a second driver, the driving end of the first driver is connected with the first supporting beam so as to drive the first supporting beam to pitch and turn around the torque tube, and the driving end of the second driver is connected with the second supporting beam so as to drive the second supporting beam to pitch and turn around the torque tube;
the detection device comprises a first sensor, a second sensor, a third sensor and a fourth sensor, wherein the first sensor is installed on one side of the front face of the first supporting beam, the second sensor is installed on one side of the back face of the first supporting beam, the third sensor is installed on one side of the front face of the second supporting beam, and the fourth sensor is installed on one side of the back face of the second supporting beam.
In the above technical solution of the present invention, the first supporting beam and the second supporting beam are preferably rigid supporting beam structures, and are used for mounting, positioning and using two groups of double-sided photovoltaic modules, and both of the first supporting beam and the second supporting beam are hinged to the torque tube on the column, and under the driving of the driving device, the first supporting beam and the second supporting beam respectively generate independent pitching and overturning processes, so as to adjust the mounting angles of the two groups of double-sided photovoltaic modules.
Furthermore, the detection device provided by the invention adopts four or four groups of sensors to respectively acquire the irradiation intensity data of the front and back of two groups of double-sided photovoltaic modules, wherein the irradiation intensity data are respectively H1 is just、H1 Back of body、H2 is just、H2 Back of body(ii) a Calculating the total irradiation intensity H of the double-sided photovoltaic module according to the acquired irradiation intensity data1 Total、H2 TotalAnd finally obtaining the respective optimal installation angle of the two groups of double-sided photovoltaic modules.
As a preferred scheme of the invention, the first driver is a linear driver, the connecting end of the first driver is hinged on the upright post, and a triangular supporting structure is formed among the first driver, the upright post and the first supporting beam; the second driver is a linear driver, the connecting end of the second driver is hinged to the upright post, and a triangular supporting structure is formed among the second driver, the upright post and the second supporting beam.
In the scheme, the first driver can adopt an electric push rod, the first driver, the stand column and the first support beam are hinged in pairs, and the pitching attitude of the first support beam is adjusted through the extension or retraction of the first driver; similarly, the second driver can also adopt an electric push rod, every two of the second driver, the upright post and the second supporting beam are hinged, and the pitching attitude of the second supporting beam is adjusted through the extension or retraction of the second driver.
As a preferable scheme of the invention, the upright column comprises a fixed first upright column and a movable second upright column, a telescopic sliding connection is arranged between the first upright column and the second upright column, and the torque tube is arranged on the second upright column and changes the distance between the torque tube and the ground along with the telescopic movement of the second upright column.
The solar double-sided photovoltaic module pitch tracking system can further be provided with more support beams, for example, three rows or four rows of support beams are arranged, and the inclination angle of each row of support beams can be independently adjusted or can be fixed on a corresponding optimal inclination angle position.
The invention has the following beneficial effects: according to the optimization method, on the basis of the optimal installation angle of the single-sided photovoltaic module, the irradiation intensity data of the front side and the back side of the double-sided photovoltaic module are detected in real time, and the respective optimal installation angles of the two groups of double-sided photovoltaic modules are obtained through adjustment, so that on one hand, the back side of the double-sided photovoltaic module is fully utilized for power generation, and on the other hand, the two groups of double-sided photovoltaic modules are both at the respective optimal installation angles, so that the power generation efficiency is;
in addition, the optimization method adopts the automatic driving device to independently adjust the installation angles of the two groups of double-sided photovoltaic modules, has strong operability and high controllability, and is convenient to popularize and use in a solar double-sided photovoltaic module system which is installed in an upper row and a lower row.
In addition, the equipment cost and the management cost can be further saved, for example, after a certain period of time, the devices (irradiation sensors and the like) used in the acquisition process can be removed through the acquired empirical data (the illumination intensity, the optimal inclination angle data and the like in different time periods of the upper row and the lower row are stored), and the inclination angles of the two groups of double-sided photovoltaic modules are manually or automatically adjusted by using the acquired empirical data.
In addition, the equipment cost and the management cost can be further saved, for example, after a certain period of time, the average optimal inclination angle of the whole year is obtained through further numerical calculation by the acquired empirical data (storing the illumination intensity, the optimal inclination angle data and the like of the upper row and the lower row at different time intervals), and the upper row and the lower row of brackets can be fixed at the position of the optimal inclination angle.
In addition, the equipment cost and the management cost can be further saved, for example, after a certain period of time, the photovoltaic system newly built, expanded and reconstructed in the nearby area can be directly installed by adopting the acquired empirical data through the acquired empirical data (storing the illumination intensity, the optimal inclination angle data and the like in different periods of the upper row and the lower row).
The solar double-sided photovoltaic module pitching tracking system is provided with the first driver and the second driver which are independent of each other, so that pitching angle adjustment of the first supporting beam and the second supporting beam is respectively carried out, and finally two groups of double-sided photovoltaic modules on the first supporting beam and the second supporting beam are positioned at respective optimal installation angles by means of data obtained by the detection device, so that the maximum power generation efficiency is obtained;
in addition, a stable triangular support structure is formed among the driving device, the first support beam, the second support beam and the upright column, and the stability of the double-sided photovoltaic module is good; under drive arrangement's automatic control, first supporting beam can have very large-range every single move rotation with the second supporting beam, can ensure that two sets of two-sided photovoltaic module are in best installation angle all the time, and environmental suitability is stronger, and the structure is simpler.
In addition, the height of the torque tube from the ground is adjustable, so that the torque tube can be better suitable for different environments, and the torque tube has the advantages of wide application range, convenience in use and better adaptability to installation environments.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic block diagram of the optimization method of the present invention;
fig. 2 is a schematic diagram of the solar bifacial photovoltaic module pitch tracking system of the present invention.
Detailed Description
A method for optimizing the installation angle of a solar double-sided photovoltaic module installed in an upper row and a lower row is disclosed, and referring to fig. 1, the method for optimizing the installation angle of the solar double-sided photovoltaic module includes the following steps:
(1) acquiring an initial reference inclination angle;
taking the example of the 12:00 time interval of 3, 23 and 23 of 2020 in the foshan area (22.38 degrees latitude), the current solar altitude angle β is obtained by an astronomical algorithm to be 68.4 degrees, and the solar azimuth angle gamma is obtained by an astronomical algorithm to be 0 degree, and the reference inclination angle α at the current position is calculated021.60 °, one specific acquisition procedure is:
the solar altitude β and the solar azimuth γ are calculated, respectively, according to the following formulas:
wherein the content of the first and second substances,
latitude is declination angle, and omega is solar hour angle;
from the solar altitude β and the solar azimuth γ, a reference inclination is calculated:
α0＝90°-arctan(tanβ/sinγ)。
(2) collecting illumination intensity data;
respectively arranging two groups of double-sided photovoltaic modules in an upper row and a lower row at reference inclination angles α0The solar photovoltaic module is installed at an angle of about 22 degrees (21.60 degrees) towards the south, the height of the stand column from the ground is 1.5 meters, the reflectivity of the ground is about 20%, and the irradiation sensors at four different installation positions are used for respectively acquiring the illumination intensity data of the front and the back of the two groups of double-sided photovoltaic modules, namely H1 is just、H1 Back of body、H2 is just、H2 Back of body；
(3) Calculating to obtain the total irradiation intensity H of the double-sided photovoltaic module1 Total、H2 Total；
H1 Total＝H1 is just+Bi·H1 Back of body；
H2 Total＝H2 is just+Bi·H2 Back of body；
Wherein Bi is a bifacial factor of the corresponding bifacial photovoltaic module, and can be directly obtained according to parameters provided by a bifacial photovoltaic module manufacturer, and the bifacial factor Bi in the example is 85%.
(4) Searching for an optimal installation angle;
at reference inclination angle α0On the basis of (1), selecting a stable irradiation time period, and completing the measurement of total radiation intensity within the range of +/-5 ℃ within 1 minute of stable irradiation1 TotalAnd H2 TotalWill change and calculate H of each angle position1 TotalAnd H2 Total，H1 TotalAnd H2 TotalWhen the values are maximum respectively, the actual inclination angles α of the two groups of double-sided photovoltaic modules are at present1、α2I.e. the optimum mounting angle, one of which is specifically measuredThe process data are shown in the following table, and the optimal inclination angle of the upper-row double-sided photovoltaic module is α according to the measurement result120 degrees, and the optimal inclination angle α of the lower double-sided photovoltaic module2＝22°。
In this example, the above process is repeatedly performed after a set period of time (e.g. 12:00 pm every day, or the most stable period of irradiation every day, or according to empirical data) to search for the optimal installation angle of the two groups of double-sided photovoltaic modules at the next period of time.
Specifically, in the use process of the optimization method, the equipment cost and the management cost can be further saved, for example, after a certain period of time, the acquisition device can be removed through the acquired empirical data, and the inclination angles of the two groups of double-sided photovoltaic modules can be manually or automatically adjusted by using the acquired empirical data.
Especially in the case of a radiation which is not stable all the time, the process can still be adjusted α separately without actually measuring the data but combining empirical data1、α2。
In this example, the installation angle between two sets of two-sided photovoltaic module independently adjusts for two-sided photovoltaic module of upper and lower double are in respective best installation angle simultaneously, and specifically, two sets of two-sided photovoltaic module are installed with following mode: be provided with the gyration fulcrum (the tubular form of moment of torsion) that is located between two sets of two-sided photovoltaic module, two sets of two-sided photovoltaic module can revolve around the gyration fulcrum respectively to look for best installation angle.
In this example, in order to perform an automatic pitching rotation process of two groups of double-sided photovoltaic modules, a unique support structure and a unique driving structure are designed, that is, a solar double-sided photovoltaic module pitching tracking system suitable for up-down double-row installation is provided, referring to fig. 2, the solar double-sided photovoltaic module pitching tracking system includes an upright post 1, a first supporting beam 3, a second supporting beam 4, a driving device and a detecting device.
Wherein, the stand 1 is vertically installed, a horizontal torque tube 2 is arranged at the top of the stand 1, the torque tube 2 provides a pitching rotation pivot for the first supporting beam 3 and the second supporting beam 4 to turn in a pitching manner, one edge (the left side edge in fig. 2) of the first supporting beam 3 is hinged with the torque tube 2, and one edge (the right side edge in fig. 2) of the second supporting beam 4 is hinged with the torque tube 2.
The driving device is used for controlling the pitch angle of the first supporting beam 3 and the second supporting beam 4 and comprises a first electric push rod 7 (a first driver) and a second electric push rod 8 (a second driver), the driving end of the first electric push rod 7 is connected with the first supporting beam 3 to drive the first supporting beam 3 to perform pitch turning around the torque tube 2, and the driving end of the second electric push rod 8 is connected with the second supporting beam 4 to drive the second supporting beam 4 to perform pitch turning around the torque tube 2;
the connecting end of the first electric push rod 7 is hinged to the upright post 1, a triangular supporting structure is formed among the first electric push rod 7, the upright post 1 and the first supporting beam 3, and the first electric push rod 7 drives the first supporting beam 3 to tilt in a pitching manner so that the first supporting beam 3 has a large-angle continuous pitching rotation range;
the connecting end of the second electric push rod 8 is hinged to the upright post 1, a triangular supporting structure is formed among the second electric push rod 8, the upright post 1 and the second supporting beam 4, and the second electric push rod 8 drives the second supporting beam 4 to pitch and turn so that the second supporting beam 4 has a large-angle continuous pitching rotation range.
The detection device is used for collecting irradiation intensity data and comprises a first sensor 9, a second sensor 10, a third sensor 11 and a fourth sensor 12, wherein the first sensor 9 is installed on one side of the front face of the first supporting beam 3, the second sensor 10 is installed on one side of the back face of the first supporting beam 3, the third sensor 11 is installed on one side of the front face of the second supporting beam 4, and the fourth sensor 12 is installed on one side of the back face of the second supporting beam 4.
Fig. 2 shows only one suitable installation position of the first sensor 9, the second sensor 10, the third sensor 11 and the fourth sensor 12, and may be arranged at other corresponding positions on the premise that the irradiation intensity detection can be performed.
In the example, the irradiation intensities of two groups of double-sided photovoltaic modules are acquired by adopting the detection device and are respectively H1 is just、H1 Back of body、H2 is just、H2 Back of body(ii) a According to the obtained irradiation intensity data, calculating the total irradiation intensity H of the double-sided photovoltaic module according to the method1 Total、H2 TotalAnd finally obtaining the respective optimal installation angle of the two groups of double-sided photovoltaic modules.
In this example, in the double-sided photovoltaic module installed in the upper and lower double rows, for example, in the position state shown in fig. 2, the height of the second double-sided photovoltaic module 6 on the second support beam 4 from the ground is relatively large, at this time, the optimal installation angle of the second double-sided photovoltaic module 6 on the second support beam 4 is relatively small, because the double-sided photovoltaic module has a certain area, a non-negligible height difference exists between the second double-sided photovoltaic module 6 installed in the upper and lower double rows and the first double-sided photovoltaic module 5, when the height difference is 2 meters, the optimal installation angle difference between the two groups of double-sided photovoltaic modules is close to 10 °, and by the optimization method of this example, the installation angle between the second double-sided photovoltaic module 6 and the first double-sided photovoltaic module 5 is reasonably adjusted, so that the power generation efficiency can be maximized.
In addition, in order to adapt to different installation environments, in other examples of the invention, the height position of the torque tube 2 can be adjusted, and a preferable structure is as follows: the stand includes fixed first stand, the second stand of activity, sets up to the sliding connection that can stretch out and draw back between first stand and the second stand, and torque tube 2 sets up on the second stand, changes its high position through the flexible of second stand, and then obtains the best high position.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that variations may be made without departing from the scope of the invention, and equivalents may be resorted to without departing from the scope of the invention.
Claims (7)
1. The method for optimizing the installation angle of the solar double-sided photovoltaic module installed in the upper row and the lower row is characterized by comprising the following steps of:
(1) acquiring an initial reference inclination angle;
obtaining the azimuth angle and the altitude angle of the current sun through an astronomical algorithm, and calculating the benchmark inclination angle α at the current position0；
(2) Calculating total irradiation intensity H of double-sided photovoltaic module1 Total、H2 Total；
Respectively arranging two groups of double-sided photovoltaic modules in an upper row and a lower row at reference inclination angles α0Installing, and calculating the total irradiation intensity H of the two-sided photovoltaic module according to the illumination intensity data of the front side and the back side of the two-sided photovoltaic module1 Total、H2 Total；
H1 Total＝H1 is just+Bi·H1 Back of body；
H2 Total＝H2 is just+Bi·H2 Back of body；
Wherein Bi is a bifacial factor of the bifacial photovoltaic module, H1 is just、H1 Back of body、H2 is just、H2 Back of bodyRespectively obtaining the illumination intensity data of the front and back of the two groups of double-sided photovoltaic modules;
(3) searching for an optimal installation angle;
at reference inclination angle α0On the basis of the two groups of double-sided photovoltaic modules, H1 TotalAnd H2 TotalWill change until H1 TotalAnd H2 TotalMaximum value, actual inclination angle α of two current groups of double-sided photovoltaic modules1、α2I.e. the optimum mounting angle.
2. The optimization method of claim 1, wherein the illumination intensity data of the front and back surfaces of the two sets of double-sided photovoltaic modules in step (2) are acquired in real time by a plurality of radiation sensors.
3. The optimization method according to claim 1, wherein two sets of bifacial photovoltaic modules are mounted as follows:
the double-sided photovoltaic module is provided with a rotary fulcrum located between the two groups of double-sided photovoltaic modules, and the two groups of double-sided photovoltaic modules can respectively rotate around the rotary fulcrum to find the optimal installation angle.
4. The optimization method according to claim 3, wherein an automatic driving device is provided to drive the two groups of double-sided photovoltaic modules to respectively rotate around the rotation pivots.
5. The utility model provides a two-sided photovoltaic module every single move tracker of solar energy of double installation from top to bottom which characterized in that, two-sided photovoltaic module every single move tracker of solar energy includes:
a column;
the first supporting beam and the second supporting beam are used for placing the double-sided photovoltaic module;
a drive device; and
the detection device is used for acquiring irradiation intensity data;
a torque tube is arranged on the upright column, the torque tube provides a pitching rotation pivot for pitching and turning the first supporting beam and the second supporting beam, one edge of the first supporting beam is hinged with the torque tube, and one edge of the second supporting beam is hinged with the torque tube;
the driving device is used for controlling the pitch angles of the first supporting beam and the second supporting beam and comprises a first driver and a second driver, the driving end of the first driver is connected with the first supporting beam to drive the first supporting beam to perform pitch turning around the torque tube, and the driving end of the second driver is connected with the second supporting beam to drive the second supporting beam to perform pitch turning around the torque tube;
the detection device comprises a first sensor, a second sensor, a third sensor and a fourth sensor, wherein the first sensor is installed on one side of the front face of the first supporting beam, the second sensor is installed on one side of the back face of the first supporting beam, the third sensor is installed on one side of the front face of the second supporting beam, and the fourth sensor is installed on one side of the back face of the second supporting beam.
6. The solar bifacial photovoltaic module pitch tracking system of claim 5, wherein said first actuator is a linear actuator, the attachment end of said first actuator being hinged to said column, said first actuator, said column and said first support beam forming a triangular support structure therebetween; the second driver is a linear driver, the connecting end of the second driver is hinged to the upright post, and a triangular supporting structure is formed among the second driver, the upright post and the second supporting beam.
7. The solar bifacial photovoltaic module pitch tracking system of claim 5, wherein said uprights include a fixed first upright, a movable second upright, a telescopic sliding connection being provided between said first upright and said second upright, said torque tube being provided on said second upright and changing its spacing from the ground as said second upright is telescopic.
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