CN108988762B - Tracking type photovoltaic bracket control system and control method thereof - Google Patents

Tracking type photovoltaic bracket control system and control method thereof Download PDF

Info

Publication number
CN108988762B
CN108988762B CN201810650596.8A CN201810650596A CN108988762B CN 108988762 B CN108988762 B CN 108988762B CN 201810650596 A CN201810650596 A CN 201810650596A CN 108988762 B CN108988762 B CN 108988762B
Authority
CN
China
Prior art keywords
horizontal
tester
rotating shaft
tracking type
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810650596.8A
Other languages
Chinese (zh)
Other versions
CN108988762A (en
Inventor
王涛
屈道宽
闫树兵
王素梅
高琰
侯圣勇
王广洲
房庆圆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Ligong Haoming New Energy Co ltd
Shandong Polytechnic College
Original Assignee
Shandong Ligong Haoming New Energy Co ltd
Shandong Polytechnic College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Ligong Haoming New Energy Co ltd, Shandong Polytechnic College filed Critical Shandong Ligong Haoming New Energy Co ltd
Priority to CN201810650596.8A priority Critical patent/CN108988762B/en
Publication of CN108988762A publication Critical patent/CN108988762A/en
Application granted granted Critical
Publication of CN108988762B publication Critical patent/CN108988762B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a tracking type photovoltaic bracket control system and a control method thereof. The tracking type photovoltaic bracket control system comprises a double-shaft tracking type photovoltaic bracket system for supporting a photovoltaic module and an ambient illumination control system, wherein the ambient illumination control system comprises an ambient illumination tester and a controller, and the double-shaft tracking type photovoltaic bracket system comprises a transmission case, a pitching motion angle sensor and a horizontal rotation angle sensor; and the pitching angle and the horizontal angle information of the photovoltaic module are transmitted to the controller in real time, and the transmission case of the double-shaft tracking type photovoltaic support system is controlled to modulate and control the angle of the photovoltaic module by combining the output result of the ambient illuminance tester. The tracking type photovoltaic bracket control system and the control method adopt the tracking type photovoltaic module to carry out rotation tracking when needed, so that the energy loss is reduced.

Description

Tracking type photovoltaic bracket control system and control method thereof
Technical Field
The invention relates to the field of photovoltaic power generation, in particular to a tracking type photovoltaic bracket control system and a control method thereof.
Background
The automatic tracking type photovoltaic support system can automatically track the position of the sun, so that the solar photovoltaic module fixed on the support is opposite to the sun at any time, the module can receive solar radiation to the greatest extent, and therefore the power generation benefit is increased, and the automatic tracking type photovoltaic support system is particularly obvious for high-latitude areas. The automatic tracking system of the photovoltaic power generation system is generally realized in a time control mode, solar annual movement track data of the geographic position of the placement point of the photovoltaic module is input into the system, and the photovoltaic module automatically adjusts a pitch angle and a horizontal angle according to set time to realize the vertical incidence of sunlight. Under the control mode, if the change amount of the illumination in the rainy weather is small, the device can work according to the set frequency, so that the abrasion of the mechanical moving part is increased, the frequent rotation of the mechanical moving part can cause the improvement of the failure rate of the mechanical moving part, and the service life of the mechanical moving part is greatly influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a tracking type photovoltaic bracket control system and a control method thereof.
The invention adopts the following technical scheme:
the tracking type photovoltaic bracket control system comprises a double-shaft tracking type photovoltaic bracket system for supporting a photovoltaic module and an ambient illumination control system, wherein the ambient illumination control system comprises an ambient illumination tester and a controller, and the double-shaft tracking type photovoltaic bracket system and the ambient illumination tester are both connected with the controller;
the double-shaft tracking type photovoltaic bracket system comprises a transmission case, a pitching motion angle sensor and a horizontal rotation angle sensor;
the ambient illuminance tester comprises a solar irradiance sensor and an ambient illuminance tester base, and the ambient illuminance tester base drives the solar irradiance sensor to track the sun;
the pitching motion angle sensor, the horizontal rotation angle sensor and the solar irradiance sensor are connected with the controller, pitching angle and horizontal angle information of the photovoltaic module are transmitted to the controller in real time, and the angle of the photovoltaic module is modulated and controlled by combining the output result of the solar irradiance sensor of the ambient illuminance tester and controlling the transmission case of the double-shaft tracking type photovoltaic bracket system.
Further, the double-shaft tracking type photovoltaic support system further comprises a stand column, a vertical rotating shaft for providing east-west rotation motion and a horizontal rotating shaft for providing north-south pitching motion, wherein the vertical rotating shaft and the horizontal rotating shaft are positioned in the transmission case, the stand column is connected with the vertical rotating shaft through a component horizontal rotation connecting flange, and the horizontal rotating shaft is connected with the photovoltaic component through a component pitching motion connecting flange;
the vertical rotating shaft is connected with a vertical shaft worm speed reducer, the vertical shaft worm speed reducer is connected with a horizontal motion driving motor through a vertical shaft transmission chain, and the controller is connected with the horizontal motion driving motor through a rotary motor driver;
the horizontal rotating shaft is connected with a horizontal shaft worm speed reducer, the horizontal shaft worm speed reducer is connected with a pitching motion driving motor through a pitching motion transmission chain, and the controller is connected with the pitching motion driving motor through a pitching motor driver.
Further, the horizontal rotation connecting flange of the assembly is provided with an east-west rotation motion proximity switch, and the bottom of the transmission box is provided with an east-west rotation motion stop block corresponding to the east-west rotation motion proximity switch.
Further, a horizontal shaft connecting stop block is arranged on the horizontal rotating shaft, and a pitching limiting switch is arranged on the transmission case corresponding to the horizontal shaft connecting stop block.
Further, the pitching motion angle sensor is positioned on the horizontal rotating shaft, and the horizontal rotating angle sensor is positioned on the vertical rotating shaft.
Further, the environment illuminance tester comprises a triangular pyramid-shaped irradiance sensor support with an included angle of 45 degrees with the bottom surface and an environment illuminance tester base for fixing the triangular pyramid-shaped irradiance sensor support, wherein solar irradiance sensors are respectively arranged on four surfaces of the triangular pyramid-shaped irradiance sensor support, and the solar irradiance sensors are connected with a controller.
Further, the cross section of the triangular pyramid-shaped irradiance sensor support parallel to the bottom surface is defined as an A surface and is used as a reference surface, the other 3 surfaces are defined as B1, B2 and B3 as comparison surfaces, the solar irradiance sensors are respectively arranged on the A, B surface, the B2 surface and the B3 surface, the base of the ambient illuminance tester adopts a double-shaft tracking type support system, the reference surface A is ensured to continuously track the solar track, and the A surface is kept to be a direct sunlight surface.
Further, the double-shaft tracking type support system comprises a tester upright post, a tester vertical rotating shaft for providing east-west rotary motion and a tester horizontal rotating shaft for providing north-south pitching motion, wherein the tester vertical rotating shaft and the tester horizontal rotating shaft are positioned in a tester transmission box, the tester upright post is connected with the vertical rotating shaft, the horizontal rotating shaft is connected with an irradiance sensor support, and a triangular pyramid table-shaped irradiance sensor support is fixed on the irradiance sensor support.
The tracking type photovoltaic bracket control method adopts the tracking type photovoltaic bracket control system, and the control method comprises the following steps:
step 1:
detecting the ambient illuminance corresponding to the system time in real time:
the controller reads the system time T every 15 minutes and records the illuminance value I of the reference surface A of the ambient illuminance tester at the moment and before 15 minutes AT And I AT-15 Recording the illumination intensity I of the surfaces B1, B2 and B3 at the moment T B1T 、I B2T 、I B3T ；
Step 2:
judging the intensity of illumination:
judging the I measured in the step 1 AT Illuminance less than 200W/m 2 When the illumination intensity is insufficient to drive the photovoltaic inverter to work, the photovoltaic module keeps static and does not rotate, and the step 7 is entered; illuminance of more than 200W/m 2 Judging whether the time is morning or afternoon;
step 3:
judging the system time:
(1) If T is the midday time and I AT -I AT-15 ≥100W/m 2 Step 4, otherwise, step 1 is carried out;
(2) If T is afternoon hours and I AT -I AT-15 |≥100W/m 2 Step 4, otherwise, step 1 is carried out;
step 4:
and (3) adjusting horizontal angles of the photovoltaic modules:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the azimuth angle of the photovoltaic module is consistent with the solar track data, and horizontal angle tracking is performed;
step 5:
judging whether the pitch angle of the photovoltaic module needs to be adjusted or not:
judging the difference value between the reference surface A of the ambient illuminance tester and the other 3 comparison surfaces B1, B2 and B3, and not only: (I) AT -I B1T )、(I AT -I B2T )、(I AT -I B3T ) Provided that any difference exceeds 100W/m 2 Step 6 is entered, otherwise step 1 is entered;
step 6:
adjusting the pitch angle of the photovoltaic module:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the pitch angle of the photovoltaic module is consistent with the solar track data, pitch angle tracking is performed, and the step 1 is repeated after adjustment;
step 7: judging whether the time is between 18 hours and 24 hours, if so, entering a step 8, otherwise, entering a step 1;
step 8: and (3) resetting all data in the controller, and returning the photovoltaic module to zero when the system time is 24.
The beneficial technical effects obtained by adopting the technical scheme are as follows:
the invention provides a tracking type photovoltaic bracket control system which adopts a light-operated signal as a modulation signal on the basis of time control. When weather is fine, the difference value of the illumination intensities received by the reference surface and the contrast surface of the ambient illuminance tester is large enough, and the photovoltaic module works in a time control mode; when the outside is in continuous overcast and rainy weather, the illumination environment of the surrounding environment is changed from direct sunlight into scattered radiation. The difference value of the illumination intensity of the scattered radiation in the four horizontal directions is much smaller than that of the direct radiation, so that the difference value of the light intensity of the surrounding environment and the light intensity in the four directions can be detected by the ambient illuminance tester, and the control of the photovoltaic bracket system on the sun tracking is realized through the signal.
Drawings
Fig. 1 is a schematic diagram of a dual axis tracking photovoltaic stent system.
Fig. 2 is a schematic diagram of the internal structure of a transmission case of the dual-axis tracking type photovoltaic bracket system.
Fig. 3 is a schematic diagram of an ambient illuminance tester.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic view of the base structure of the ambient illuminance tester.
Fig. 6 is an overall schematic diagram of a tracking photovoltaic support system.
Fig. 7 is a schematic diagram of the operation of the controller.
Fig. 8 is a flow chart of the tracking photovoltaic support system operation.
In the figure, a 1-base, a 2-upright post, a 3-transmission box, a 4-vertical rotating shaft, a 5-horizontal rotating shaft, a 6-photovoltaic module, a 7-module pitching motion connecting flange, an 8-module horizontal rotating connecting flange, a 9-horizontal motion driving motor, a 10-motor chain transmission fixing upright plate, an 11-pitching motion driving chain, a 12-pitching motion driving motor, a 13-horizontal shaft supporting bearing, a 14-module fixing piece, a 15-vertical shaft fixing flange, a 16-horizontal shaft worm speed reducer, a 17-pitching motion angle sensor, a 18-horizontal shaft connecting stop block, a 19-pitching motion limit switch, a 20-controller, a 21-east-west rotation motion stop block, a 22-west rotation motion proximity switch, a 23-vertical shaft bearing, a 24-horizontal rotation angle sensor, a 25-vertical shaft worm speed reducer, a 26-vertical shaft driving chain, a 27-cable outlet, a 28-triangular frustum irradiance sensor support, a 29-solar irradiance sensor, a 30-environment irradiance tester, a 31-irradiance sensor support, a 32-tester base, a 33-tester and a 34-upright post.
Detailed Description
Embodiments of the present invention will be further described with reference to fig. 1 to 8:
the invention solves the problems that the double-shaft tracking type photovoltaic bracket still continuously works under the long-time overcast and rainy weather condition, the mechanical abrasion is increased, and the stability of the system is reduced. The tracking type photovoltaic bracket control system and the control method adopt the tracking type photovoltaic module to carry out rotation tracking only when needed, thereby reducing energy loss.
The invention takes the light-operated signal as the modulating signal on the basis of adopting the time control of the photovoltaic bracket system. The concrete working mode is as follows: when weather is fine, the difference value of the illumination intensities received by the reference surface and the contrast surface of the ambient illuminance tester is large enough, and the photovoltaic module works in a time control mode; when the outside is in continuous overcast and rainy weather, the illumination environment of the surrounding environment is changed from direct sunlight into scattered radiation. The difference value of the illumination intensity of the scattered radiation in the four horizontal directions is much smaller than that of the direct radiation, so that the difference value of the light intensity of the surrounding environment and the light intensity in the four directions can be detected by the ambient illuminance tester, and the control of the photovoltaic bracket system on the sun tracking is realized through the signal.
The tracking type photovoltaic bracket control system comprises a double-shaft tracking type photovoltaic bracket system for supporting a photovoltaic module and an ambient illumination control system, wherein the ambient illumination control system comprises an ambient illumination tester 30 and a controller 20, and the double-shaft tracking type photovoltaic bracket system comprises a transmission case 3, a pitching motion angle sensor 17 and a horizontal rotation angle sensor 24; the pitching motion angle sensor, the horizontal rotation angle sensor and the ambient illuminance tester are connected with the controller, pitching angle and horizontal angle information of the photovoltaic module are transmitted to the controller in real time, and the output result of the ambient illuminance tester is combined to control the transmission case of the double-shaft tracking type photovoltaic bracket system to modulate and control the angle of the photovoltaic module.
The controller is internally provided with a system time timer, and meanwhile, local longitude and latitude data, solar deflection angle data of different seasons and dates, sunlight average intensity data of different seasons and dates at different moments and the like are stored.
The double-shaft tracking type photovoltaic support system further comprises a stand column 2, a vertical rotating shaft 4 for providing east-west rotary motion and a horizontal rotating shaft 5 for providing north-south pitching motion, wherein the vertical rotating shaft and the horizontal rotating shaft are positioned in a transmission case, the stand column is connected with the vertical rotating shaft through a component horizontal rotation connecting flange 8, and the horizontal rotating shaft is connected with a photovoltaic component 6 through a component pitching motion connecting flange 7 through a component fixing piece 14; the vertical rotating shaft is connected with a vertical shaft worm speed reducer 25, the vertical shaft worm speed reducer is connected with a horizontal motion driving motor 9 through a vertical shaft transmission chain 26, and the controller is connected with the horizontal motion driving motor through a rotary motor driver; the horizontal rotating shaft is connected with a horizontal shaft worm speed reducer 16, the horizontal shaft worm speed reducer is connected with a pitching motion driving motor 12 through a pitching motion transmission chain 11, and the controller is connected with the pitching motion driving motor through a pitching motor driver. The upright post is fixedly installed through the base 1.
The reduction ratio 80 of the vertical axis worm speed reducer and the horizontal axis worm speed reducer is driven by a stepping motor and adopts 1:1 chain transmission. The horizontal movement driving motor and the pitching movement driving motor are stepping motors.
The rotation and pitching movement cannot be completed due to the restriction of cables, transmission box bodies and the like, and in order to prevent collision, the horizontal rotation connecting flange of the assembly is provided with a east-west rotation movement proximity switch 22, and the bottom of the transmission box is provided with a east-west rotation stop block 21 corresponding to the east-west rotation proximity switch. The horizontal rotating shaft is provided with a horizontal shaft connecting stop block 18, and the transmission case is provided with a pitching motion limit switch 19 corresponding to the horizontal shaft connecting stop block.
The pitching motion angle sensor is positioned on the horizontal rotating shaft, and the horizontal rotating angle sensor is positioned on the vertical rotating shaft. The horizontal rotating shaft is connected with the transmission case through a horizontal shaft supporting bearing 13, and a rotating gap is reserved. The upright post is connected with a vertical rotating shaft through a component horizontal rotating connecting flange, a vertical shaft fixing flange 15 is additionally arranged at the connecting position, and the vertical rotating shaft is rotationally connected with the transmission case and the vertical shaft fixing flange through a vertical shaft bearing 23, and a rotating gap is reserved.
The transmission case is internally provided with a motor chain transmission fixed vertical plate 10, and the horizontal movement driving motor, the pitching movement driving motor, the horizontal shaft worm speed reducer and the vertical shaft worm speed reducer are all fixed on the motor chain transmission fixed vertical plate.
The transmission case is provided with a cable outlet 27, from which power lines and control lines are laid to supply power to the internal devices or upload detection data or issue control commands as signal transmission channels.
The environment illuminance tester comprises a triangular pyramid-shaped table-shaped irradiance sensor support 28 with an included angle of 45 degrees with the bottom surface and an environment illuminance tester base for fixing the triangular pyramid-shaped table-shaped irradiance sensor support, wherein solar irradiance sensors 29 are respectively arranged on four surfaces of the triangular pyramid-shaped table-shaped irradiance sensor support, and the solar irradiance sensors are connected with a controller.
The cross section of the triangular pyramid irradiance sensor support parallel to the bottom surface is defined as an A surface and is used as a reference surface, the other 3 surfaces are defined as B1, B2 and B3 as comparison surfaces, the solar irradiance sensors are respectively arranged on the A, B surface, the B2 surface and the B3 surface, the base of the ambient illuminance tester adopts a double-shaft tracking bracket system, the reference surface A is ensured to continuously track the track of the sun, and the A surface is kept to be a direct sunlight surface.
The dual-axis tracking type support system comprises a tester upright post 33, a tester vertical rotating shaft for providing east-west rotary motion and a tester horizontal rotating shaft for providing north-south pitching motion, wherein the tester vertical rotating shaft and the tester horizontal rotating shaft are positioned in a tester transmission box 34, the tester upright post is connected with the vertical rotating shaft, the horizontal rotating shaft is connected with an irradiance sensor support 31, and a triangular pyramid table-shaped irradiance sensor support 28 is fixed on the irradiance sensor support 31. The tester stand 33 is fixedly mounted by the tester base 32.
The double-shaft tracking type support system of the ambient illuminance tester adopts the same structure and working principle as those of the double-shaft tracking type photovoltaic support system of the tracking type photovoltaic support control system, and can realize synchronous sun tracking.
The tracking type photovoltaic bracket control method adopts the tracking type photovoltaic bracket control system, and the control method comprises the following steps:
step 1:
detecting the ambient illuminance corresponding to the system time in real time:
the controller reads the system time T every 15 minutes and records the illuminance value I of the reference surface A of the ambient illuminance tester at the moment and before 15 minutes AT And I AT-15 Recording the illumination intensity I of the surfaces B1, B2 and B3 at the moment T B1T 、I B2T 、I B3T ；
Step 2:
judging the intensity of illumination:
judging the I measured in the step 1 AT Illuminance less than 200W/m 2 When the illumination intensity is insufficient to drive the photovoltaic inverter to work, the photovoltaic module keeps static and does not rotate, and the step 7 is entered; illuminance of more than 200W/m 2 Judging whether the time is morning or afternoon;
step 3:
judging the system time:
(1) If T is the midday time and I AT -I AT-15 ≥100W/m 2 Step 4, otherwise, step 1 is carried out;
(2) If T is afternoon hours and I AT -I AT-15 |≥100W/m 2 Step 4, otherwise, step 1 is carried out;
step 4:
and (3) adjusting horizontal angles of the photovoltaic modules:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the azimuth angle of the photovoltaic module is consistent with the solar track data, and horizontal angle tracking is performed;
step 5:
judging whether the pitch angle of the photovoltaic module needs to be adjusted or not:
judging the difference value between the reference surface A of the ambient illuminance tester and the other 3 comparison surfaces B1, B2 and B3, and not only: (I) AT -I B1T )、(I AT -I B2T )、(I AT -I B3T )，Provided that any difference exceeds 100W/m 2 Step 6 is entered, otherwise step 1 is entered;
step 6:
adjusting the pitch angle of the photovoltaic module:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the pitch angle of the photovoltaic module is consistent with the solar track data, pitch angle tracking is performed, and the step 1 is repeated after adjustment;
step 7: judging whether the time is between 18 hours and 24 hours, if so, entering a step 8, otherwise, entering a step 1;
step 8: and (3) resetting all data in the controller, and returning the photovoltaic module to zero when the system time is 24.
For example, on overcast days, the illumination intensity is less than 200W/m 2 And when the time is 10 am, comprehensively judging by adopting the method through the double-shaft tracking type photovoltaic bracket system and the environment illumination control system, and not tracking the day.
At a certain moment, the illumination intensity is less than 200W/m 2 When the time is 20 night, comprehensively judging by adopting the method through the double-shaft tracking type photovoltaic bracket system and the environment illumination control system, tracking the sun, returning all data in the controller to zero, and returning the photovoltaic module to zero when the system time is 24.
At some point, measure I AT 250W/m 2 ，I AT-15 400W/m 2 The illumination intensity is more than 200W/m 2 At the time of 15 pm, |I AT -I AT-15 |≥100W/m 2 ，(I AT -I B3T )≥100W/m 2 The horizontal angle and the pitch angle of the photovoltaic module are adjusted by comprehensively judging through the double-shaft tracking type photovoltaic bracket system and the environment illumination control system by adopting the method, and the sun is tracked.
The above description is, of course, merely of preferred embodiments of the present invention, and the present invention is not limited to the above-described embodiments, but it should be understood that all equivalent and obvious modifications will fall within the spirit and scope of the present invention as those skilled in the art will do under the guidance of the present specification.

Claims (8)

1. The control method of the tracking type photovoltaic bracket control system comprises a double-shaft tracking type photovoltaic bracket system for supporting a photovoltaic assembly (6) and an ambient light control system, wherein the ambient light control system comprises an ambient light tester (30) and a controller (20), and the double-shaft tracking type photovoltaic bracket system comprises a transmission case (3), a pitching motion angle sensor (17) and a horizontal rotation angle sensor (24); the pitching motion angle sensor (17), the horizontal rotation angle sensor (24) and the ambient illuminance tester (30) are connected with the controller (20), pitch angle and horizontal angle information of the photovoltaic module (6) are transmitted to the controller (20) in real time, and the angle of the photovoltaic module (6) is modulated and controlled by the transmission case (3) of the double-shaft tracking type photovoltaic bracket system in combination with the output result of the ambient illuminance tester (30);
the control method is characterized by comprising the following steps:
step 1:
detecting the ambient illuminance corresponding to the system time in real time:
the controller reads the system time T every 15 minutes and records the illuminance value I of the reference surface A of the ambient illuminance tester at the moment and before 15 minutes AT And I AT-15 Recording the illumination intensity I of the surfaces B1, B2 and B3 at the moment T B1T 、I B2T 、I B3T ；
Step 2:
judging the intensity of illumination:
judging the I measured in the step 1 AT Illuminance less than 200W/m 2 When the illumination intensity is insufficient to drive the photovoltaic inverter to work, the photovoltaic module keeps static and does not rotate, and the step 7 is entered; illuminance of more than 200W/m 2 Judging whether the time is morning or afternoon;
step 3:
judging the system time:
(1) If T is the midday time and I AT -I AT-15 ≥100W/m 2 Step 4, otherwise, step 1 is carried out;
(2) If T is afternoon hours and I AT -I AT-15 |≥100W/m 2 Step 4, otherwise, step 1 is carried out;
step 4:
and (3) adjusting horizontal angles of the photovoltaic modules:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the azimuth angle of the photovoltaic module is consistent with the solar track data, and horizontal angle tracking is performed;
step 5:
judging whether the pitch angle of the photovoltaic module needs to be adjusted or not:
judging the difference value between the reference surface A of the ambient illuminance tester and the other 3 comparison surfaces B1, B2 and B3, and not only: (I) AT -I B1T ）、（I AT -I B2T ）、（I AT -I B3T ) Provided that any difference exceeds 100W/m 2 Step 6 is entered, otherwise step 1 is entered;
step 6:
adjusting the pitch angle of the photovoltaic module:
the current angle position of the photovoltaic module is read by the controller and is compared with solar track data stored by the controller, so that the pitch angle of the photovoltaic module is consistent with the solar track data, pitch angle tracking is carried out, and the step 1 is repeated after adjustment;
step 7: judging whether the time is between 18 hours and 24 hours, if so, entering a step 8, otherwise, entering a step 1;
step 8: and (3) resetting all data in the controller, and returning the photovoltaic module to zero when the system time is 24.
2. The control method of the tracking type photovoltaic bracket control system according to claim 1, characterized in that the dual-axis tracking type photovoltaic bracket system further comprises a stand column (2), a vertical rotating shaft (4) for providing east-west rotating motion and a horizontal rotating shaft (5) for providing north-south pitching motion, wherein the vertical rotating shaft (4) and the horizontal rotating shaft (5) are positioned in a transmission case (3), the stand column (2) is connected with the vertical rotating shaft (4) through a component horizontal rotating connecting flange (8), and the horizontal rotating shaft (5) is connected with a photovoltaic component (6) through a component pitching motion connecting flange (7) through a component fixing piece (14);
the vertical rotating shaft (4) is connected with a vertical shaft worm speed reducer (25), the vertical shaft worm speed reducer (25) is connected with a horizontal motion driving motor (9) through a vertical shaft transmission chain (26), and the controller (20) is connected with the horizontal motion driving motor (9) through a rotary motor driver;
the horizontal rotating shaft (5) is connected with a horizontal shaft worm speed reducer (16), the horizontal shaft worm speed reducer (16) is connected with a pitching motion driving motor (12) through a pitching motion transmission chain (11), and the controller (20) is connected with the pitching motion driving motor (12) through a pitching motor driver.
3. The control method of the tracking type photovoltaic bracket control system according to claim 2, wherein the horizontal rotation connecting flange (8) of the component is provided with a east-west rotation motion proximity switch (22), and the bottom of the transmission case (3) is provided with a east-west rotation motion stop block (21) corresponding to the east-west rotation motion proximity switch.
4. The control method of the tracking type photovoltaic bracket control system according to claim 2, wherein the horizontal rotating shaft (5) is provided with a horizontal shaft connecting stop block (18), and the transmission case (3) is provided with a pitching limiting switch (19) corresponding to the horizontal shaft connecting stop block (18).
5. The control method of a tracking type photovoltaic bracket control system according to claim 2, characterized in that the pitching motion angle sensor (17) is located on a horizontal rotating shaft (5), and the horizontal rotating angle sensor (24) is located on a vertical rotating shaft (4).
6. The control method of a tracking type photovoltaic bracket control system according to claim 1, wherein the ambient light illuminance tester (30) comprises a triangular pyramid-shaped irradiance sensor support (28) with an included angle of 45 degrees with the bottom surface, and an ambient light illuminance tester base for fixing the triangular pyramid-shaped irradiance sensor support (28), solar irradiance sensors (29) are respectively arranged on four surfaces of the triangular pyramid-shaped irradiance sensor support (28), and the solar irradiance sensors (29) are connected with the controller (20).
7. The control method of a tracking type photovoltaic bracket control system according to claim 6, wherein the cross section of the triangular pyramid-shaped table-shaped irradiance sensor support (28) parallel to the bottom surface is defined as an A surface and is used as a reference surface, the other 3 surfaces are defined as B1, B2 and B3 as comparison surfaces, the solar irradiance sensor (29) is respectively arranged on the surfaces A, B, B2 and B3, the base of the ambient illuminance tester adopts a double-shaft tracking type bracket system, the reference surface A is ensured to continuously track the sun track during operation, and the A surface is kept to be a sunlight direct surface.
8. The control method of a tracking type photovoltaic bracket control system according to claim 7, wherein the ambient illuminance tester base comprises a tester upright post (33), a tester vertical rotating shaft for providing east-west direction rotary motion, and a tester horizontal rotating shaft for providing north-south direction pitching motion, the tester vertical rotating shaft and the tester horizontal rotating shaft are positioned in a tester transmission case (34), the tester upright post (33) is connected with the vertical rotating shaft, the tester horizontal rotating shaft is connected with an irradiance sensor bracket (31), and the triangular pyramid table-shaped irradiance sensor support (28) is fixed on the irradiance sensor bracket (31).
CN201810650596.8A 2018-06-22 2018-06-22 Tracking type photovoltaic bracket control system and control method thereof Active CN108988762B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810650596.8A CN108988762B (en) 2018-06-22 2018-06-22 Tracking type photovoltaic bracket control system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810650596.8A CN108988762B (en) 2018-06-22 2018-06-22 Tracking type photovoltaic bracket control system and control method thereof

Publications (2)

Publication Number Publication Date
CN108988762A CN108988762A (en) 2018-12-11
CN108988762B true CN108988762B (en) 2023-11-28

Family

ID=64538059

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810650596.8A Active CN108988762B (en) 2018-06-22 2018-06-22 Tracking type photovoltaic bracket control system and control method thereof

Country Status (1)

Country Link
CN (1) CN108988762B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110297506B (en) * 2019-06-18 2022-12-30 西安隆基清洁能源有限公司 Tracking method, device and equipment for double-sided single-shaft assembly photovoltaic system
CN114442678A (en) * 2021-12-28 2022-05-06 浙江朝泰科技有限公司 Sun tracking device and method for photovoltaic module

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080102885A (en) * 2007-05-22 2008-11-26 심포니에너지주식회사 Not project shadow and sunray tracing solar cell module system
CN101969280A (en) * 2010-09-27 2011-02-09 江苏大学 Singlechip based solar cell automatic tracking device and control method thereof
CN102055378A (en) * 2009-11-02 2011-05-11 胡剑峰 Sunlight tracker
CN102252648A (en) * 2011-04-02 2011-11-23 曹博成 Angle measurement method for solar tracking and solar orientation sensor
CN102778896A (en) * 2012-07-02 2012-11-14 洛阳师范学院 Automatic solar tracking device
CN203689165U (en) * 2014-02-28 2014-07-02 锦州阳光气象科技有限公司 Sunlight incidence angle tracking gauge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080102885A (en) * 2007-05-22 2008-11-26 심포니에너지주식회사 Not project shadow and sunray tracing solar cell module system
CN102055378A (en) * 2009-11-02 2011-05-11 胡剑峰 Sunlight tracker
CN101969280A (en) * 2010-09-27 2011-02-09 江苏大学 Singlechip based solar cell automatic tracking device and control method thereof
CN102252648A (en) * 2011-04-02 2011-11-23 曹博成 Angle measurement method for solar tracking and solar orientation sensor
CN102778896A (en) * 2012-07-02 2012-11-14 洛阳师范学院 Automatic solar tracking device
CN203689165U (en) * 2014-02-28 2014-07-02 锦州阳光气象科技有限公司 Sunlight incidence angle tracking gauge

Also Published As

Publication number Publication date
CN108988762A (en) 2018-12-11

Similar Documents

Publication Publication Date Title
CN201479045U (en) Sunward horizontal-shaft single-shaft tracking system in east-west direction
US20130333745A1 (en) Solar tracking for terrestrial solar arrays with variable start and stop positions
US8297273B2 (en) Controlling apparatus for a concentration photovoltaic system
US20130206708A1 (en) Solar panel deployment system
WO2009155530A1 (en) Solar concentrator system
CN104808703A (en) Intelligent solar tracking system
CN108988762B (en) Tracking type photovoltaic bracket control system and control method thereof
KR100922238B1 (en) Solar power generator
JP5061047B2 (en) PV system tracking system
KR101136543B1 (en) Tracking Photovoltaic System
US20210194417A1 (en) Elevated dual-axis photovoltaic solar tracking assembly
CN101586887A (en) Method and device for trough solar heat collector to automatically track solar trace
CN102354222A (en) Shadow-free tracking method for double-axis solar photovoltaic array power generation system
KR20100000810A (en) Solar power plant using sound proof wall of road
CN106130459A (en) A kind of photovoltaic bracket realizing automatic tracing sunlight optimized incidence
KR100732616B1 (en) Apparatus for tracking a solar photovoltatic power generation using a differential characteristic of output voltage of pv module and method thereof
KR20090010531A (en) Tracking photovoltaic system based on location information
CN108462437A (en) A kind of photovoltaic power station photovoltaic module fixed system
CN103135591A (en) Solar power automatic tracking system
CN101777856B (en) Photovoltaic tracking device using photosensitive difference and network-based monitoring method
CN202331219U (en) Synchronous tracking rocker-type light focusing solar power station
CN111158403A (en) Sun-tracking power generation method and device for photovoltaic module
CN116027814A (en) Photovoltaic panel inclination angle control device of photovoltaic power generation system
CN203812093U (en) Solar energy tracking support using two-dimension inclination angle sensor
CN114020049B (en) Single-shaft tracking type photovoltaic system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant