KR102538063B1 - Smart apparatus and method for tracking the sun - Google Patents

Abstract

The present invention relates to a photovoltaic device. More specifically, it relates to a smart solar tracking method in the process of tracking sunlight to increase the efficiency of power generation,
A sensing unit made of a sensing panel is provided under the condensing lens, and a thermocouple is provided on the sensing panel to perform tilting of the photovoltaic module,
A band-shaped photodiode is installed along the longitudinal direction of the edge of the sensing panel where the sensing panels come into contact with each other,
A solar light focus induction step of tilting a solar power module to the opposite side of a solar light focal point formed inside the sensing unit so that the solar light focal point reaches a photodiode at an edge of the sensing panel;
a solar light focus sensing step of detecting whether or not the solar light focus reaches the photodiode at the edge of the sensing panel by the solar light focus inducing step;
When the sunlight focus is detected in the sunlight focus detection step, the photovoltaic module is tilted to the opposite side of the sunlight focus, and the tilting is performed until the sunlight focus reaches the photodiode of the edge of the sensing panel on the opposite side. includes

Description

Smart solar tracking method {SMART APPARATUS AND METHOD FOR TRACKING THE SUN}

The present invention relates to a photovoltaic device. More specifically, it relates to a smart sunlight tracking method in the process of tracking sunlight to increase the efficiency of power generation.

1 is an exemplary diagram showing the installation of a photovoltaic module 10a on a rooftop 20a. Solar power generation includes a panel, which is an assembly of modules composed of solar cells; a storage battery that stores the generated electricity; As a power conversion device that converts electricity into the required form; It consists of Photovoltaic cells use the fact that photovoltaic power is generated by the photoelectric effect when light is irradiated on the contact surface between a metal and a semiconductor or the pn junction of a semiconductor.

For solar tracking of the photovoltaic module, a photo-diode sensor, which is a kind of semiconductor diode, is used. A photodiode is a type of optical sensor that converts light energy into electrical energy, and a photodetection function is added to the PN junction of a semiconductor. As background art provided in this regard, Patent Publication No. 7374 (2012.01.20) and Patent Publication No. 22752 (2013.03.07.) are disclosed.

A solar cell photovoltaic cell has a structure in which an N (Negative) type semiconductor and a P (Positive) type semiconductor are bonded together, and the boundary between the two semiconductors is called a PN-junction. When the sunlight reaches the photovoltaic cell, the sunlight is absorbed into the photovoltaic cell, and the energy of the absorbed sunlight generates electricity between holes (+) and electrons (-) in the semiconductor. Hole particles and electron particles are generated and move freely in the photovoltaic cell, respectively, but electrons (-) gather toward the N-type semiconductor and holes (+) toward the P-type semiconductor, resulting in potential generation. When a load is connected to the attached electrode, current flows.

In a solar cell power generation facility of photovoltaic power generation, it takes a lot of time until the photodiode is focused on the sunlight, so the initial approach speed of the photovoltaic module decreases, and when the weather is cloudy, the sunlight must be focused again. In the process, the efficiency of photovoltaic power generation may be lowered because it cannot respond promptly. The photodiode and the condensing lens forming the focus of sunlight have a limited size, so the range in which sunlight can be tracked is narrow, and a plurality of tracking devices are required to track sunlight over a wide range.

As an intelligent tracking technology that provides a method or means related to solar tracking for tilting a photovoltaic module using a condensing lens, a sensor, a control unit, and a drive unit so that the solar light focus is accurately formed in the photovoltaic module,

A solar light focus induction step of tilting the solar power generation module to the opposite side of the solar light focus formed inside the sensing unit provided to narrow the width below the condensing lens;

a solar light focus sensing step of detecting whether or not the solar light focus reaches the photodiode provided in the sensing unit by the solar light focus induction step;

A precision tracking step of tilting the photovoltaic module to the opposite side of the sunlight focus when the photodiode detects the sunlight focus in the sunlight focus detection step;

The solar light focus induction step compares the temperature difference of a plurality of thermocouples (Thermocouple, thermocouple) provided along the circumference of the sensing unit and tilts the photovoltaic module to the opposite side of the solar light focus;

If the sensor or photodiode does not detect the sunlight focus, set the altitude and azimuth of the sunlight at the current location, and compare the altitude and azimuth of the set sunlight and the altitude and azimuth to which the photovoltaic module is heading. Further comprising an automatic control step of tilting the photovoltaic module to the set altitude and azimuth when there is an angle difference greater than the set value; In the solar tracking method,

The photovoltaic module is tilted to the opposite side of the solar focus formed inside the sensing unit provided in the form of a quadrangular pyramid composed of four sensing panels narrowing downward below the condensing lens, so that the solar light is focused on the sensing panel. Solar focus induction step to reach the edge;

a solar focus detection step of detecting whether the solar light focus reaches the photodiode provided along the length of the edge by the solar light focus induction step;

A precision tracking step of tilting the photovoltaic module to the opposite side of the solar focal point when the solar focal point is detected in the solar focal sensing step, until the solar focal point reaches a photodiode provided at the edge of the opposite side; Including,

The photodiodes take the form of a band and are installed along the longitudinal direction of the edge where the sensing panels come into contact with each other, and are respectively disposed along the diagonal direction of the sensing unit when viewed from a plane.

A band-shaped photodiode (201 ) and reaches the precise tracking step to provide a rapid reaction rate,

It is provided that tracking the location of a large area of solar light is performed once using the sensing panel, and speedy precision tracking is performed once using a band-shaped photodiode provided along the edge length of the sensing panel.

The smart sunlight tracking method primarily tracks sunlight through a sensor in a wide range, and secondly tracks sunlight in a narrow range using a photodiode precisely, so that sunlight tracking is fast in a wide range. Sun tracking is fast at the initial position, so when the clouds clear or the weather clears. It can respond quickly to the position of sunlight in near real time, increasing the power generation efficiency of the photovoltaic module. Since there is no need to add a photodiode or other tracking device to extend the range of solar tracking, the configuration of the power generation device is simple, low cost, and easy to maintain.

1 is a state diagram illustrating installation of a photovoltaic module.
2 is a perspective view, a plan view, and a cross-sectional side view of a photovoltaic module in which a solar tracking device is installed.
FIG. 3 is an exemplary diagram illustrating a solar tracking process of FIG. 2 .
FIG. 4 is a flow chart of the sunlight tracking method of FIG. 2 .
5 is an exemplary diagram showing a solar tracking process of a solar tracking device.
6 is an exemplary diagram of a solar tracking device in an embodiment of the present invention.
7 is a state diagram illustrating a solar tracking process of the solar tracking device of FIG. 6 .
8 is an enlarged view showing a part of the solar tracking device of FIG. 6 .

First, a method of utilizing a thermocouple and a photodiode sensor in a known solar tracking method will be investigated. In the photovoltaic module, a plate 12 is installed on a lower base 16 through a driving unit, and a plurality of photovoltaic devices 14 are embedded in the plate 12. See Figure 2. A solar tracking device 100 is installed in the photovoltaic module 10 so that the solar light is always focused vertically on the module. By the solar tracking device 100, the photovoltaic module 10 generates power while always tracking sunlight by tilting the driving unit. At this time, the driving unit allows the tilting to be controlled by the control unit of the solar tracking device, and this is achieved by citing known technologies.

The solar tracking device includes a condensing lens 140 that forms a focal point of sunlight; It is installed below the condensing lens 140 and is formed in a cone shape with a width narrowing downward, so that the solar light focus is formed by the condensing lens 140 on the inner surface, and a plurality of thermocouples 180 along the circumference ) is provided with a sensing unit 160; a photodiode 200 provided at the lower end of the sensing unit 160 and divided into a plurality of pieces; and outputs an induction signal so that the photovoltaic module 10 is tilted to the opposite side of the thermocouple having a high temperature among the thermocouples 180, and when the photodiode 200 detects the focus of sunlight, the detected photodiode piece and a control unit (not shown) outputting a precision adjustment signal so that the photovoltaic module 10 is tilted to the opposite side.

The condensing lens 140, the sensing unit 160, and the photodiode 200 may be provided with a housing 120 in the photovoltaic module 10 and installed in the housing 120. Specifically, the condensing lens 140 ) is installed in the housing 120 to be horizontal with the photovoltaic module 10, and the sensing unit 160 is provided inside the housing 120, and the photodiode 200 is provided at the lower end of the sensing unit 160. It is provided to be horizontal with the photovoltaic module 10.

The condensing lens 140 is provided in various forms capable of forming a focus of sunlight, such as a convex lens. Since the condensing lens 140 and the photodiode 200 are installed horizontally on the photovoltaic module 10, the elevation angle or azimuth angle is also formed the same as that of the photovoltaic module 10, and thus the solar tracking device 100 If the solar light focus is exactly coincided with, it can be seen that the solar light focus of the photovoltaic module 10 also coincides.

A condensing lens 140 is installed on the top of the housing 120 to transmit the incident sunlight and form a solar focus. The formed solar focus is formed on the inner surface of the sensing unit 160 inside the housing 120, and the thermocouple 180 provided in the sensing unit 160 determines whether the solar focus is formed and the degree of heat generation of the sensing unit 160. By measuring it, it is known where the solar focus is formed inside the current sensing unit 160 . Therefore, it is possible to know where the solar light focus is formed in the photovoltaic module 10 through this.

Through the detection of the solar focus by the sensor 160, it is possible to detect the solar focus in a wider range than in the case of using only a photodiode, and the photovoltaic module according to the position of the solar focus detected by the detector 160. By tilting (10), it is possible to track sunlight more quickly.

A sensing unit 160 may be provided inside the housing 120 below the condensing lens 140 on the top of the housing 120 . Such a sensing unit 160 is installed below the condensing lens 140, and is formed in a cone shape with a width narrowing downward, so that the solar light focus by the condensing lens 140 is formed on the inner surface and along the circumference. A plurality of thermocouples 180 are provided. Specifically, the sensing unit 160 may have an inverted cone shape, and when the sensing unit 160 is in the shape of a polygonal pyramid, a plurality of sensing panels form the side of the polygonal pyramid, and each sensing panel has a thermocouple 180 ) can be provided. The thermocouple 180 provided in each sensing panel can measure the temperature of each sensing panel, and through this, it is possible to determine at which position the solar light focus is currently formed.

In the case of the embodiment shown in FIGS. 2 and 2 , the sensing unit 160 has a quadrangular pyramid shape composed of four sensing panels 162 , 164 , 166 , and 168 . When the sensing unit 160 is composed of four sensing panels, each has directions of north, south, east, west, and through this, it is possible to determine at which point among each point the solar focus is formed, and the location of the point where the solar focus is formed. When the photovoltaic module 10 is tilted in the opposite direction, the photovoltaic tracker is also tilted and the formed photovoltaic focal point comes closer to the photodiode 200 . By installing the heat insulating member 130 between the sensing panels, it is possible to block heat exchange between the sensing panels, and it is possible to clearly grasp the formation position of the solar light focus through more accurate heat measurement.

Each temperature value measured by the thermocouple 180 in the sensing panel is transmitted to a controller (not shown). The control unit may be provided at the lower end of the sensing unit 160 in the housing 120, or may be provided at another location of the photovoltaic module 10 and connected to the sensing unit and the photodiode 200 to enable electrical communication. .

The control unit receives the temperature value detected by the thermocouple 180, determines a thermocouple having a high temperature among them, and tilts the photovoltaic module 10 to the opposite side of the thermocouple. (not shown) outputs an induction signal. The movable unit is a component for changing the position or tilting angle of the photovoltaic module, and is divided into, for example, a horizontal drive unit and a vertical drive unit, so that the photovoltaic module can be tilted in all directions up, down, left and right. The control unit transmits a tilting signal in a certain direction to the movable unit based on the measurement result of the thermocouple, and the movable unit tilts the photovoltaic module according to the tilting signal, and the solar tracking device installed in the photovoltaic module is also tilted together. will be.

A photodiode 200 is installed at the lower end of the sensing unit 160 to enable more precise solar tracking. The photodiode 200 is installed at the lower end of the sensing unit 160. As seen above, the sensing unit 160 has the shape of a horn. to install. The sensing unit 160 senses the focus of sunlight, and the photovoltaic module is tilted accordingly. When this process is performed two or three times, the focus of sunlight is formed on the photodiode 200 . The photodiode 200 can measure the intensity of sunlight. When a certain level of sunlight intensity is input to the control unit as a sunlight focus, it is possible to know whether or not the photodiode 200 is focused on sunlight. It will be.

When the photodiode 200 uses a multi-segment photodiode divided into a plurality of pieces, it is possible to precisely control the solar light to be focused in the center according to the position of the solar light focused inside the photodiode 200. In the case of FIG. 2, the photodiode is a case of a 4-segment photodiode divided into four pieces 220, 240, 260, and 280, and the photodiode 200 is formed in a quadrangular shape, and the vertex is disposed on a tangent line where the respective sensing panels 162, 164, 166, and 168 meet. Like the detector 160, this photodiode structure senses the solar focus in the up, down, left and right directions and transmits the signal to the control unit, and the control unit receives the signal of each piece of the photodiode to determine the position of the coastal solar focus and A precise control signal is output to the moving unit so that the photovoltaic module 10 is tilted in the opposite direction of the sunlight focus.

Through the configuration of the sensing unit 160, the photodiode 200, and the control unit, the sensing unit 160 primarily tilts the photovoltaic module so that the solar light is focused close to the photodiode, and secondarily the photodiode 200 By tilting the photovoltaic module so that the solar light focus is aligned in the center of the inside, fast and accurate solar light tracking is possible with only one tracking device.

3 shows a solar tracking process,

(a) When the sunlight focus F is formed on the left side of the upper panel 162 among the sensing panels of the sensing unit 160, the control unit transmits light to the upper panel 162 through each of the thermocouples 180 (182, 184, 186, and 188). Recognize that a solar focal point has been formed. Although the solar focus may be blurred if it is far from the center, at least the location of the solar focus can be determined because the temperature difference between the thermocouples is generated by forming the solar focus itself. When the control unit outputs a signal for tilting the photovoltaic module in a direction opposite to the location of the photovoltaic focus of the upper panel 162, that is, downward, the photovoltaic module moves downward along with the tilting of the photovoltaic module. As the solar focal point approaches the center, the size of the solar focal point decreases and its intensity increases.

(b) As the solar focal point F' moves downward, the control unit recognizes the moved position of the solar focal point through the thermocouple 184 of the left panel 164. In this case, the temperature of the thermocouple 184 of the left panel 164 will be the highest, and accordingly, the control unit transmits a tilt induction signal to the right side opposite to the left side to the drive unit of the photovoltaic module. Accordingly, the focus of the sunlight is moved to the right and is focused on the inside of the photodiode.

(c) When the sunlight focus (F'') is formed on the photodiode, since each photodiode piece can measure the intensity of sunlight, the controller also has the current sunlight focus point among the pieces 220, 240, 260, and 280 of the photodiode. You can find out where it is located. When it is detected that the solar focal point is located on the piece 240 on the left, a tilting signal to the right is output. In this case, the signal is a precise adjustment signal, and the photovoltaic module moves at a very small angle (eg, 0.1 Fig.) to transmit a signal to the movable part to be tilted. By precise control in the photodiode 200, the focus of sunlight is focused on the center of the photodiode 200, and thereafter, the intensity of sunlight is detected by the photodiode piece at a certain period or continuously to continuously focus the sunlight. to align in the center. Through this process, the solar tracking device continuously tracks sunlight, and the photovoltaic module always faces sunlight directly to maintain maximum power generation efficiency.

When the weather gets better again after being cloudy or when the clouds pass after the sunlight is covered by clouds, it is necessary to track the sunlight again. It is possible to quickly align the solar light focus on the photodiode 200 and execute precise tracking immediately.

4 is a flowchart illustrating a solar tracking method using the solar tracking device shown in FIG. 2 . That is, as a solar tracking method for tilting a photovoltaic module using a condensing lens, a sensor, a control unit, and a driving unit so that the solar light focus is accurately formed in the photovoltaic module,

A solar light focus induction step (S210) of tilting the photovoltaic module to the opposite side of the solar light focus formed inside the sensing unit provided to narrow the width below the condensing lens so that the solar light focus reaches the lower end of the sensing unit; a solar focus detection step (S220) of detecting whether the solar focus reaches the photodiode 200 provided at the lower end of the sensing unit by the solar focus induction step (S210); And when the solar focus is detected in the solar focus detection step (S220), a precise tracking step (S230) of tilting the photovoltaic module to the opposite side of the solar focal point so that the solar focal point is focused on the center of the photodiode 200 );

In addition, the sunlight tracking method sets the altitude and azimuth of the sunlight at the current location when the sensor or the photodiode 200 does not detect the focus of the sunlight, and sets the altitude and azimuth of the set sunlight and the current sunlight An automatic control step (S300) of tilting the photovoltaic module to the set altitude and azimuth when there is an angle difference greater than the set value by comparing the altitude and azimuth to which the power generation module is heading; may be further included.

The sunlight tracking method is largely composed of a sensor tracking process (S200) and a program tracking process (automatic control step, S300). The sensor tracking process (S200) is to track the solar light focus of the photovoltaic module by directly detecting the solar light focus with a sensor-type physical configuration, and the program tracking process (S300) is to directly detect the solar light focus using the azimuth and elevation angles. It is to track the solar light focus of the photovoltaic module without detecting light. In addition, the sensor of the sensor tracking process (S200) can be used as the solar tracking device of the present invention described above, and the sensor tracking process (S200) and the program tracking process (S300) are used complementary to each other.

First, the solar focus is sensed through the solar tracking device (S100). It detects whether a solar focus is formed in the sensing unit of the solar tracking device or the photodiode 200, and if the solar focus is detected, the sensor tracking process (S200) is entered. If the solar focus is not detected, The program tracking process (S300) is entered.

When the sunlight focus is detected and the sensor tracking process (S200) is entered, the sunlight focus induction step is executed (S210). In the solar focus induction step (S210), the photovoltaic module is tilted to the opposite side of the solar focus formed inside the sensing unit prepared to narrow the width below the condensing lens to induce the solar focus to reach the lower end of the sensing unit do. This is executed through the sensing unit and thermocouple of the solar tracking device described above, and as a result, sunlight is focused on the photodiode 200 at the lower part.

When the solar focus is detected by the photodiode 200 through two or three solar light focus induction steps, a precise tracking step is performed (S220). In the precise tracking step (S230), the photovoltaic module is tilted to the opposite side of the solar focal point using the multi-segment photodiode at the bottom of the sensing unit so that the solar focal point reaches the center of the photodiode 200. When the sunlight is continuously tracked (for example, in units of 0.1 degrees) with the sunlight focus located at the center of the photodiode 200, the photovoltaic module can accurately look at the sunlight and maintain maximum power generation efficiency. there will be On the other hand, there may be cases in which sunlight focus is not formed temporarily in the sensing unit or the photodiode 200 due to weather fluctuations or sensor failure. In this case, if the focus of sunlight is not formed for a certain period of time, a program tracking process is started so that sunlight can be tracked by azimuth and elevation (S250). In the embodiment of FIG. 4 , when no sunlight focus is detected for 5 minutes, a program tracking process is initiated. Hereinafter, the program tracking process (S300) will be described in detail.

When the solar focal point is detected through the solar tracking device, if the solar focal point is not detected by the detector or the photodiode 200, the program tracking process (automatic control step, S300) is entered. In the program tracking process, the altitude and azimuth of sunlight are set at the current location, and the altitude and azimuth of the set sunlight are compared with the altitude and azimuth angle to which the photovoltaic module is heading. An automatic control step (S300) of tilting the power generation module to the set elevation and azimuth angles is performed. In the automatic control step (S300), the location information of the modern photovoltaic module is received through the GPS module, and the elevation angle and azimuth angle of the sunlight at the current location are set (S310) using the received location information. In the case of solar azimuth and elevation, the current time and geographic information of the received GPS may be fetched by substituting them into a pre-prepared data table, or they may be obtained by calculating through a formula.

As described above, when the altitude and azimuth of the current sunlight are calculated, they are compared with the altitude and azimuth that the current photovoltaic module is aiming at, and if there is an angle difference greater than the set value, the photovoltaic module is tilted to the calculated angle. Do (S320, S330). In the case of the illustrated embodiment, the setting value is set to 0.5 degrees. If the angle difference is less than 0.5 degrees, it is considered that the solar light focus can be formed in the detector and the photodiode 200 at the currently directed angle, and the sensor tracking process (S200) is entered and the solar light focus induction step (S210) do In this state, if the solar light focus is not formed for 5 minutes, the program tracking process is started again (S250). If the angle difference is 0.5 degrees or more, the photovoltaic module is tilted to the set values of elevation and azimuth (S330). During the process of tilting to the set value or after tilting, if sunlight is incident on the sensor or the photodiode 200, the tilting is stopped and a sensor tracking process is started (S340).

On the other hand, in order to protect the photovoltaic power generation module at a time when photovoltaic power generation cannot be performed, the photovoltaic power generation module is directed at an azimuth angle of 40 to 50 degrees and an elevation angle of 80 to 90 degrees based on 0 degrees true north. A safety step of tilting may be performed (S400, S500). Sunset may be determined based on the current time or the azimuth and altitude angles toward which the user is heading. As the azimuth angle of the safety stage is maintained at 40 to 50 degrees, fast tracking of sunlight is possible immediately after sunrise. of modules and panels can be prevented from being damaged.

However, the above implementation has the same problem as in FIG. 5 . That is, the sensing unit 160 senses the focus of sunlight and the photovoltaic module is tilted so that the focus of sunlight is formed on the photodiode 200. As shown in FIG. 5 (a), this movement of the focus of sunlight (F , F`, F``) are usually passed two or three times, and as the number of times increases, it takes a lot of time to raise the temperature by heating the thermocouple 180 of the sensing unit 160. In some cases, the path of the moving process may be repeated several times as shown in FIG. 5 (b), which may become a problem.

In order to solve the above problem, the solar tracking method of the present invention, in the drawings of FIGS. 6 and 7,

By tilting the photovoltaic module to the opposite side of the solar focus formed inside the sensing unit 160 provided in the form of a quadrangular pyramid composed of four sensing panels narrowing downward below the condensing lens, the solar power module is tilted to focus A solar light focus induction step to reach the edge of the sensing panel;

A solar light focus detection step for detecting whether the solar light focus reaches one of the four photodiodes 201, 202, 203, and 204 provided along the length of the edge by the solar light focus induction step. and,

When the solar focus is detected in the solar focus detection step, the photovoltaic module is tilted to the opposite side of the solar focal point, and the tilting is performed until the solar focal point reaches the photodiode 203 provided on the opposite edge. Tracking step; provides an implementation that includes. However, FIG. 7 illustrates a case in which sunlight is first focused on the photodiode 204 of an adjacent edge.

More specifically, in the cross-sectional side view of FIG. 2 and FIG. 6, the sensing unit 160 takes the form of a quadrangular pyramid composed of four sensing panels that narrow downward, and a photodiode ( 201, 202, 203, 204) are disposed along the longitudinal direction of the edge in the form of a strip or a plate-like rod having a length. Accordingly, the photodiodes 201, 202, 203, and 204 are installed at four locations, and are respectively disposed along the diagonal direction of the sensing unit 160 when viewed from a plan view. At this time, the photodiodes 201, 202, 203, and 204 are installed so that their ends are spaced apart from each other, as shown in FIG. 8 (a).

As such, the strip-shaped photodiodes 201, 202, 203, and 204 disposed along the length of the edge of the sensing panel of the sensing unit 160 provide a very fast solar tracking method. In FIG. 7,

First, in the solar light focus induction step, when the solar light is focused on one of the sensing panels of the sensing unit and the thermocouples 180 and 182 of the sensing unit 160 detect a temperature difference, photovoltaic power generation is directed to the opposite side of the solar light focus. A signal to tilt the module is sent to the movable unit, and either the horizontal driving unit or the vertical driving unit is operated to tilt the photovoltaic module to the opposite side of the solar focal point.

Accordingly, when the sunlight focus moves from the first sunlight focus F1 to reach the edge of the sensing panel and the second sunlight focus F2 is formed, it goes directly to the sunlight focus detection step, and the photo installed at the edge It is detected by the diode 201 and goes to the precise tracking step. At this time, the horizontal driving unit and the vertical driving unit operate simultaneously and are performed as one rapid and continuous operation. In this way, it is possible to directly reach the precise tracking step with just one movement from the solar focus induction step, so that a very rapid reaction speed can be provided and at the same time, the above-described wide-range solar focus location tracking can be performed.

In the precise tracking step in FIG. 8, the second solar light focus F2 is located at a place where the ends of the four photodiodes 201, 202, 203, and 204, which take the form of a band, are densely spaced apart as shown in FIG. 8 (a). is moved quickly and the second solar focus F2 moves, and as shown in FIG. ) in the direction of the other photodiodes 202 and 203 (or the edge end of the other sensing panel), so that the four photodiodes 201, 202, 203, and 204 are spaced apart from each other at the center of FIG. 8 (c). As such, the solar focal point is positioned at the center of the sensing unit 160 as a method of forming a positive solar focal point F3′.

In this way, tracking the location of the focus of sunlight over a large area is performed once using the sensing panel, and tracking the location of the focus of sunlight is quickly performed once using the photodiode in the form of a band provided along the edge length of the sensing panel. Therefore, it is possible to track the location of sunlight only twice. At this time, the precise tracking step performed by the photodiode is regarded as one process.

Solar tracking device 100;
a condensing lens 140;
a sensing unit 160;
photodiodes 200 (201, 202, 203, 204);
Solar power generation module (10);

Claims (1)

As a smart solar tracking method,
Below the condensing lens, a sensing unit is provided in the form of a quadrangular pyramid composed of four sensing panels whose width is narrowed, and a thermocouple is provided on the sensing panel to accurately form a solar power module by using it. Tilt,
A band-shaped photodiode is installed along the longitudinal direction of the edge of the sensing panel where the sensing panels come into contact with each other,
A solar light focus induction step of tilting a solar power module to the opposite side of a solar light focal point formed inside the sensing unit so that the solar light focal point reaches a photodiode at an edge of the sensing panel;
a solar light focus sensing step of detecting whether or not the solar light focus reaches the photodiode at the edge of the sensing panel by the solar light focus inducing step;
When the sunlight focus is detected in the sunlight focus detection step, the photovoltaic module is tilted to the opposite side of the sunlight focus, and the tilting is performed until the sunlight focus reaches the photodiode of the edge of the sensing panel on the opposite side. including,
The sunlight focus reaches the photodiode 201 at the edge of the sensing panel with only one movement from the first sunlight focus F1, and the second sunlight focus F2 is formed, and the photodiode at the edge of the sensing panel ( 201) and quickly form a solar focus by a method that reaches the precise tracking step immediately,
The condensing lens takes the form of a convex lens to form a solar focus so as to transmit incident sunlight to form a solar focus, and is installed on top of the housing 120 provided in the photovoltaic module.
A smart solar tracking method, characterized in that.

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