CN202841017U - Wind-and-sand-proof and dust-elimination single-shaft photovoltaic tracking structure for power generation system - Google Patents

Abstract

The utility model discloses a structure of a single-axis photovoltaic tracking power generation system with wind and sand protection and dust elimination. The first fixing bracket and the second fixing bracket of the utility model are respectively connected with the two ends of the rotating shaft, and the back of the photovoltaic module is fixed on the rotating shaft. Driven by the motor, the photovoltaic module can move 0° to 360° along with the rotating shaft. Two-way rotation; a motor, a control module, a first pressure sensor and a second pressure sensor are arranged on the second fixed bracket, and the angles between the first pressure sensor and the second pressure sensor and the rotation axis are a° and (180-a) respectively °; The meteorological observer is set on one side of the first fixed bracket, monitors wind direction, wind speed, rainfall, and light intensity signals, and transmits the monitored signals to the control module. The utility model improves the surface cleanliness of the module, reduces the hot spot effect, maintains the incident light rate on the surface of the module, improves the photoelectric conversion efficiency, and can effectively clean the dust on the surface of the photovoltaic module, thereby reducing labor costs.

Description

The structure of single-axis photovoltaic tracking power generation system for wind, sand and dust elimination

technical field

The invention relates to a structure of a single-axis photovoltaic tracking power generation system with wind and sand protection and dust elimination.

Background technique

Photovoltaic modules are usually installed outdoors to receive sunlight and generate electricity. During use, the surface of the photovoltaic module is easy to be covered with dust, resulting in a hot spot effect, which will directly reduce the photoelectric conversion efficiency and thus affect the operating efficiency of the entire system. Therefore, it is necessary to maintain the cleanliness of the surface of the photovoltaic module. For photovoltaic modules installed in deserts and other areas with strong wind and sand, sand is more likely to accumulate on the surface of photovoltaic modules, and sand particles will also damage the surface of photovoltaic modules, which will seriously affect the photoelectric conversion efficiency. Therefore, it is necessary to minimize the adverse effects of wind and sand on photovoltaic modules. Impresses and improves the cleanliness of photovoltaic module surfaces.

At present, the cleaning method of large-scale photovoltaic modules is mainly manual scrubbing, which not only has low work efficiency, but also increases the cost of operation and maintenance. Some of them are cleaned directly with water, which is not efficient, and for photovoltaic system, adding to the problem of finding and storing water.

Contents of the invention

Aiming at the deficiencies of the prior art, the invention provides a single-axis photovoltaic tracking power generation system structure for preventing wind, sand and eliminating dust.

The invention includes a photovoltaic module, a supporting frame of the photovoltaic module, a motor, a meteorological observation instrument, a control module, a first pressure sensor and a second pressure sensor.

The supporting frame of the photovoltaic module includes a first fixing bracket, a second fixing bracket and a rotating shaft; the first fixing bracket and the second fixing bracket are respectively connected to both ends of the rotating shaft, the back of the photovoltaic module is fixed on the rotating shaft, and the rotating shaft is connected to the rotating shaft. The motors are connected, and driven by the motor, the photovoltaic module can rotate 0° to 360° bidirectionally with the rotating shaft; the second fixed bracket is equipped with a motor, a control module, a first pressure sensor and a second pressure sensor, and the first The angles between the pressure sensor and the second pressure sensor and the rotation axis are a° and (180-a)° respectively; the meteorological observer is set on one side of the first fixed bracket to monitor the wind direction, wind speed, rainfall, and light intensity signals, and The detected signal is transmitted to the control module.

The working process of the present invention is as follows:

The meteorological observer includes wind direction sensor, wind speed sensor, rainfall sensor, and light sensor; monitors wind direction, wind speed, rainfall, and light intensity signals, and transmits the monitored signals to the control module, and sets the first wind speed threshold, the second wind speed threshold, and rainfall Threshold, light intensity threshold, pressure sensor threshold, wherein the first wind speed threshold is greater than the second wind speed threshold.

When the light intensity value detected by the light sensor is higher than the light intensity threshold value and the wind speed value detected by the wind speed sensor is higher than the first wind speed threshold value, the control module drives the motor to rotate the glass surface of the photovoltaic module 1 toward the ground to avoid sand damage Photovoltaic module surface work;

When the light intensity value detected by the light sensor is higher than the light intensity threshold, and the wind speed value detected by the wind speed sensor is between the first wind speed threshold and the second wind speed threshold, the control module drives the motor to rotate the glass surface of the photovoltaic module to face away from the wind and sand Blowing in the direction to avoid sand damage to the surface of the photovoltaic module, but at the same time the photovoltaic module can still perform photoelectric conversion, but the efficiency is lower than before rotation;

When the light intensity value detected by the light intensity sensor is higher than the light intensity threshold and the wind speed detected by the wind speed sensor is lower than the second wind speed threshold, the photovoltaic module does not need to rotate.

When the light intensity value detected by the light intensity sensor is lower than the light intensity threshold, the photoelectric conversion efficiency of the photovoltaic module is too low or the photoelectric conversion is stopped under low illumination. At this time, the control module drives the motor to rotate the glass surface of the photovoltaic module to face the ground, and with The ground forms an inclined angle to avoid wind and sand accumulation when photovoltaic modules are not in use, and at the same time use natural wind to clean the surface of photovoltaic modules.

When the rain value detected by the rain sensor is higher than the rain threshold, it means that there is enough water to clean the photovoltaic module. At this time, if the pressure signal detected by the first pressure sensor is higher than the pressure sensor threshold, or the pressure signal detected by the second pressure sensor When the pressure signal is higher than the pressure sensor threshold, compare the pressure signals of the first pressure sensor and the second pressure sensor, select the pressure sensor with a higher pressure signal, control the module to drive the motor to work, and rotate the photovoltaic module to make the glass surface of the photovoltaic module and the pressure lower. High pressure sensors are installed in the same direction. When the rainfall value detected by the rain sensor is lower than the rainfall threshold, it means that the rainfall is not enough to clean the photovoltaic modules. At this time, the control module drives the motor to work, and rotates the glass surface of the photovoltaic module to face the ground, so as to avoid insufficient rain and cause the photovoltaic module to The dust on the surface sticks to the glass surface of the photovoltaic module due to rain.

The beneficial effects of the present invention are as follows:

The invention can improve the surface cleanliness of the module, reduce the hot spot effect, maintain the incident light rate on the surface of the module, improve the photoelectric conversion efficiency, and at the same time effectively clean the dust on the surface of the photovoltaic module, reduce the frequency of manual cleaning of the photovoltaic module, and reduce the labor cost ; Taking wind sand pre-protection and natural rainwater cleaning for photovoltaic modules can reduce the number of manual cleaning of photovoltaic modules, greatly reduce maintenance costs, and improve the performance and life of modules.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure, a photovoltaic module 1, a motor 2, a weather observation instrument 3, a control module 4, a first pressure sensor 5, a second pressure sensor 6, a first fixing bracket 7, a second fixing bracket 8, and a rotating shaft 9.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, the structure of a single-axis photovoltaic tracking power generation system with wind, sand and dust elimination includes photovoltaic modules 1, motor 2, weather observation instrument 3, control module 4, first pressure sensor 5, second pressure sensor 6, The first fixed bracket 7 , the second fixed bracket 8 , and the rotating shaft 9 .

The first fixing bracket 7 and the second fixing bracket 8 are respectively connected with the two ends of the rotating shaft 9, the back of the photovoltaic module 1 is fixed on the rotating shaft 9, and the rotating shaft 9 is connected with the motor 2, driven by the motor 2, the photovoltaic The component 1 can rotate 0° to 360° bidirectionally with the rotating shaft 9; the second fixed bracket 8 is provided with a motor 2, a control module 4, a first pressure sensor 5 and a second pressure sensor 6, and the first pressure sensor 5 and the angles between the second pressure sensor 6 and the rotation axis are respectively a° and (180-a)°; the meteorological observation instrument 3 is set on one side of the first fixed bracket 7, including wind direction sensor, wind speed sensor, rainfall sensor, light sensor ; Meteorological observer 3 monitors wind direction, wind speed, rainfall, light intensity signals, and transmits the monitored signals to control module 4;

The first fixing bracket 7, the second fixing bracket 8 and the rotating shaft 9 jointly form a photovoltaic module supporting frame;

The working process of the present invention is as follows:

The meteorological observer monitors wind direction, wind speed, rainfall, and light intensity signals, and transmits the monitored signals to the control module 4, setting the first wind speed threshold, the second wind speed threshold, the rainfall threshold, the light intensity threshold, and the pressure sensor threshold, wherein the first wind speed threshold, the second wind speed threshold, the rainfall threshold, the light intensity threshold, and the pressure sensor threshold. A wind speed threshold is greater than a second wind speed threshold.

When the light intensity value detected by the light sensor is higher than the light intensity threshold value and the wind speed value detected by the wind speed sensor is higher than the first wind speed threshold value, the control module 4 drives the motor 2 to rotate the glass surface of the photovoltaic module 1 toward the ground to avoid sand Particle damage to the surface of photovoltaic modules 1;

When the light intensity value detected by the light sensor is higher than the light intensity threshold, and the wind speed value detected by the wind speed sensor is between the first wind speed threshold and the second wind speed threshold, the control module 4 drives the motor 2 to rotate the glass surface of the photovoltaic module 1 Turn away from the wind and sand blowing direction to avoid sand damage to the surface of the photovoltaic module, but at the same time the photovoltaic module can still perform photoelectric conversion, but the efficiency is lower than before rotation;

When the light intensity detected by the light intensity sensor is higher than the light intensity threshold and the wind speed detected by the wind speed sensor is lower than the second wind speed threshold, the photovoltaic module 1 does not need to rotate.

When the light intensity value detected by the light intensity sensor is lower than the light intensity threshold, the photoelectric conversion efficiency of the photovoltaic module is too low or the photoelectric conversion is stopped under low illumination. At this time, the control module 4 drives the motor 2 to rotate the glass surface of the photovoltaic module toward the ground, And it forms an inclination angle with the ground to avoid wind and sand accumulation when the photovoltaic modules are not in use, and at the same time, use natural wind to clean the surface of photovoltaic modules.

When the rain value detected by the rain sensor is higher than the rain threshold, it means that there is enough water to clean the photovoltaic module. At this time, if the pressure signal detected by the first pressure sensor is higher than the pressure sensor threshold, or the pressure signal detected by the second pressure sensor When the pressure signal is higher than the pressure sensor threshold, compare the pressure signals of the first pressure sensor and the second pressure sensor, select the pressure sensor with a higher pressure signal, control the module to drive the motor to work, and rotate the photovoltaic module to make the glass surface of the photovoltaic module and the pressure lower. High pressure sensors are installed in the same direction. When the rainfall value detected by the rain sensor is lower than the rainfall threshold, it means that the rainfall is not enough to clean the photovoltaic modules. At this time, the control module drives the motor to work, and rotates the glass surface of the photovoltaic module to face the ground, so as to avoid insufficient rain and cause the photovoltaic module to The dust on the surface sticks to the glass surface of the photovoltaic module due to rain.

Claims (1)

1. The single-axis photovoltaic tracking power generation system structure with anti-wind, sand, and dust elimination, including photovoltaic modules, photovoltaic module support frames, motors, weather observers, control modules, first pressure sensors, and second pressure sensors; it is characterized in that: The supporting frame of the photovoltaic module includes a first fixing bracket, a second fixing bracket and a rotating shaft; the first fixing bracket and the second fixing bracket are respectively connected to both ends of the rotating shaft, the back of the photovoltaic module is fixed on the rotating shaft, and the rotating shaft is connected to the rotating shaft. The motors are connected, and driven by the motor, the photovoltaic module can rotate 0° to 360° bidirectionally with the rotating shaft; the second fixed bracket is equipped with a motor, a control module, a first pressure sensor and a second pressure sensor, and the first The angles between the pressure sensor and the second pressure sensor and the rotation axis are a° and (180-a)° respectively; the meteorological observer is set on one side of the first fixed bracket to monitor the wind direction, wind speed, rainfall, and light intensity signals, and The detected signal is transmitted to the control module.

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