KR100700968B1 - System for tracking the sunlight - Google Patents

Abstract

A system for tracking sunlight is provided to compensate the position of a solar cell module panel by swing and yawing the module panel in lateral and vertical directions with a brake unit. A system for tracking sunlight includes a solar cell module panel(10), a swing drive unit(40), a yawing drive unit(50), a rotary encoder, and a control unit(60). The solar cell module panel absorbs the sunlight to generate electric power. The swing drive unit drives the solar cell module panel to pivot about a swing shaft(30) in a lateral direction. The yawing drive unit drives the solar cell module panel to pivot about a yawing shaft in a vertical direction. The rotary encoder is installed on the swing shaft and the yawing shaft. The control unit controls the operation of the swing drive unit and the yawing drive unit by generating a supervision and compensation signal in real time. The solar cell module panel is divided into a plurality of panels to be folded.

Description

Solar Tracking System {SYSTEM FOR TRACKING THE SUNLIGHT}

1 is a solar tracking system pre- filed by the inventor

2 is a perspective view of a solar tracking system according to an embodiment of the present invention

3 is a cross-sectional view of a solar cell module panel according to an embodiment of the present invention.

4 is a cross-sectional view of a solar tracking system according to an embodiment of the present invention.

5 is a cross-sectional view of the yaw operation of the solar tracking system according to an embodiment of the present invention.

6 is a cross-sectional view of a solar tracking system according to another embodiment of the present invention.

<Short Description of Main Reference Signs>

10: solar module panel 11: hinge

12: roller 13: motor

14: Gear 15: Chain

20: base 30: swing shaft

31: support plate 32: swing brake means

40: swing drive means 50: yawing drive means

55: support bracket 60: control means

70: support rail 80: first reinforcing bridge

90: second reinforcement leg 91: limit switch for swing position detection

92: swing fixing stopper S: swing axis

Y: Yaw axis

The present invention relates to a solar tracking system, and more particularly, to a solar tracking system that can be divided into several solar cell module panels to be folded by the folding drive means to prepare for strong winds or extreme weather, such as typhoons. It is about.

In general, the solar tracking system is a device for measuring the solar altitude or orientation, or the solar module panel of the solar collector or photovoltaic device to track the sun according to a pre-programmed method in time. Such solar tracking is based on the swing operation of the solar tracking system that tracks the orientation of the sun by turning the solar module panel around the swing axis in the vertical direction and the yaw axis in the left and right directions. By yawing operation of a solar tracking system that rotates the back to track the altitude of the sun.

The present inventors have developed a solar tracking system that can take more mechanically stable solar tracking operation and can monitor and correct the solar tracking position in real time in Utility Model Registration Application No. 2004-0028534. 1 illustrates a solar tracking system of the utility model, and relates to a solar tracking system for stably rotating a solar cell module panel about a swing axis in a vertical direction and a yaw axis in a left and right direction.

However, the conventional solar tracking system as described above has a disadvantage in that there is a lack of means to prepare for the case that the machine malfunctions due to natural disasters or any environmental influence, if the device is slightly shaken due to the instantaneous gusts.

Therefore, the solar tracking system has to continuously perform unnecessary solar tracking angle correction operation due to the external influence as described above, and has a disadvantage in that the solar tracking system lacks a countermeasure even when a strong wind is blown by a typhoon.

The present invention was conceived by recognizing the above problems and the object of the present invention is that the solar cell module panel is divided into several to prepare for strong winds or extreme weather, such as typhoons and the like can be folded by the folding drive means To provide a tracking system.

In addition, another object of the present invention is provided with a braking means that can be prepared in case of shaking the device a little by momentary gusts, such as swing drive means and yawing drive means swings for correcting the solar cell module panel by shaking left and right And it is to provide a solar tracking system that can prevent unnecessary operation of the yawing drive means.

In addition, an additional object of the present invention is that a large load is applied to the swing driving means and the yawing driving means due to wind pressure or mechanical damage to the solar cell module panel and flows to the motor provided in the swing driving means and the yawing driving means. It is to provide a solar tracking system that can prevent damage to the system by stopping the driving of the motor when the current value is a certain value or more.

In order to achieve the above object, the solar tracking system according to the present invention includes a solar cell module panel for absorbing sunlight and producing electric power, and rotating the solar cell module panel in a left and right direction about a swing axis. Swing driving means; Yaw driving means for pivoting the solar cell module panel in the up and down direction about the yaw axis and a rotary encoder on the swing axis and the yaw axis to detect a rotation position to generate a rotation position signal and to generate the rotation position signal. It comprises a control means for controlling the operation of the swing drive means and the yawing drive means by generating a monitoring and correction signal in real time compared to a preset value in the microcomputer, the solar cell module panel is divided into several panels It is foldably connected, characterized in that the several panels are folded by the folding drive means.

In addition, the solar tracking system according to the present invention, the folding drive means is provided with a wind pressure gauge to reach the signal of a predetermined wind pressure value for a predetermined time set in advance in the microcomputer the solar cell module panel is operated to be folded. It is done.

In addition, the solar tracking system according to the present invention, the microcomputer is equipped with a clock chip that uses the weather observation and astronomical observation and the preset value for each region, date and climate according to the normal angle with the sun 365 days The position of the sun according to the date and time are databased, and the rotation values of the swing axis and the yaw axis are set according to the position of the database sun.

In addition, the solar tracking system according to the present invention, the swing driving means and the yawing driving means is provided with a motor for generating a rotational force and a current amount measuring sensor for measuring the amount of current flowing through the motor, the control means Is characterized in that the drive of the motor of the swing driving means and the yawing driving means is stopped when the current amount measured by the amperometric measuring sensor reaches a preset value.

In addition, in the solar tracking system according to the present invention, the control means stops the driving of the motor of the swing driving means and the yawing driving means when the current amount value measured by the current amount measuring sensor reaches a preset value, When the predetermined time elapses, the motor of the swing driving means and the yawing driving means is restarted.

In addition, the solar tracking system according to the present invention, in the solar tracking system for tracking the solar light according to the change in the altitude and orientation of the sun by rotating the solar cell module panel around the swing axis and yaw axis. Swinging means for preventing the left and right swing of the solar cell module panel around the swing axis in a state in which the solar cell module panel is positioned in a predetermined position by the swing driving means, and the yawing It further comprises a yawing braking means for preventing the shaking of the vertical direction of the solar module panel with respect to the yaw axis in a state in which the solar cell module panel is located in a predetermined position by being rotated in the vertical direction by a driving means. do.

In addition, the solar tracking system according to the present invention is swinging in the left and right direction by the swing drive means swing position detection limit switch for generating a signal by detecting this when the solar cell module panel is located at a predetermined position; The swing fixing stopper for fixing the swing shaft so as not to rotate in accordance with the signal generated by the swing position detection limit switch, and when the solar cell module panel is positioned at a predetermined position by turning up and down by the yawing driving means Yawing position detection limit switch for detecting this to generate a signal, and a yawing fixing stopper for fixing the yawing shaft is not rotated in accordance with the signal generated by the yaw position detecting limit switch do.

Hereinafter, with reference to the embodiment shown in the drawings will be described in more detail the solar tracking system according to the present invention.

First, Figure 2 shows a perspective view of a solar tracking system according to an embodiment of the present invention. Solar tracking system according to an embodiment of the present invention, the solar cell module panel 10, the base 20, the swing shaft 30, the swing drive means 40, yawing drive means 50, control means 60 ), The support rail 70, the first reinforcing leg 80, the second reinforcing leg (90).

3 is a cross-sectional view of the solar cell module panel 10, in which the solar cell module panel 10 is divided into several panels and is foldably connected, and shows a state of being folded by the folding drive means.

Referring to the drawing, the solar cell module panel 10 is divided into several panels and is foldably connected to each other by a hinge 11 provided between the divided panels.

The folding drive means is provided with a roller 12 at both ends of the solar cell module panel 10, the rotational force of the motor 13 provided on one side of the solar cell module panel 10, the gear 14 and the roller ( 12) and a chain 15 spanning the gear 14 to be connected to the solar cell module panel 10. The folding drive means is a drive means of the motor 13, as well as the drive method of the hydraulic or pneumatic method is possible depending on the scale.

The folding drive means is made to prepare for strong winds or extreme weather due to typhoons, etc., having a wind pressure gauge in consideration of the size of the system and the area of the solar cell module panel 10, such as a predetermined wind pressure value for a predetermined time set in the microcomputer When the above signal is reached, the solar cell module panel 10 is configured to be folded. For example, if the wind speed of 40m / s lasts more than 10 seconds, the folding drive means is to be activated.

The solar cell module panel 10 automatically stops swinging and yawing by the data of the sensor and the microcomputer when there is a large amount of snow in the winter, and maintains the vertical angle of 60 to 80 degrees to snow on the solar cell module panel 10. Prevents stacking In addition, during hail, gusts, and typhoons, while folding the solar cell module panel 10 at the same time to prevent direct contact with the wind to reduce the impact of wind pressure and to prevent damage to the solar cell module panel 10 by stones or foreign matter. This operation is controlled by the automatic setting by the sensor and the microcomputer, and also by the cameras installed in the surroundings, and remotely controlled by wire or wireless internet.

The base 20 is a structure for supporting the swing shaft 30, the swing driving means 40, the support rail 70, the first reinforcing leg 80 and the second reinforcing leg (90).

The swing shaft 30 is rotatably supported by the base 20 to support the solar cell module panel 10 while pivoting about the swing axis S in the vertical direction. As shown in FIG. 2, the upper end of the swing shaft 30 is hinged to the rear surface of the solar cell module panel 10 such that the solar cell module panel 10 is rotatable about a yaw axis Y. FIG. .

The swing driving means 40 for driving the swing shaft 30 is configured to rotate about the swing axis S, and may include a motor driving method, a hydraulic driving method, and a pneumatic driving method. In FIG. 2, the power generating means of the swing driving means 40 is a motor, and the rotational force of the motor is transmitted to the swing shaft 30 through the support plate 31 provided at the lower end of the swing shaft 30. This is suitable for small capacity solar power generation system, and it is preferable to adopt hydraulic or pneumatic driving method in large capacity solar power generation system. Looking at the specific elements of the swing drive means 40, gears, chains, belts and the like are used. The swing shaft 30 is driven by a preset micom command value for each region and date. The swing shaft 30 is fixed by the support plate 31, as can be seen in FIG.

A swing braking means 32 is provided at the bottom of the swing shaft 30 to prepare for a case in which the device is slightly shaken by a momentary gust. The swing braking means 32 is pivoted in the horizontal direction by the swing driving means 40 so that the solar cell module panel 10 is centered on the swing shaft in a state where the solar cell module panel 10 is positioned at a predetermined position. The drive of the swing shaft 30 by the microcomputer is operated so as to prevent the shaking in the left and right directions, thereby preventing the error of the swing shaft 30. The operation of the swing braking means 32 is also made by the microcomputer. When the swing braking means 32 is not provided and an error of the swing shaft occurs, an operation for correcting the error is made and consumes driving power according to the error correction. In addition, if the error is not corrected correctly, the efficiency of power generation is lowered.

The yaw driving means 50 is provided in the yaw connecting panel 55 connecting one end of the swing shaft 30 and the second reinforcing leg 90. The yaw driving means 50 is to rotate the solar cell module panel 10 about the yaw axis (Y) while being integrally rotated with the swing shaft (30). The yaw driving means 50 may selectively use a motor, hydraulic and pneumatic driving method according to the scale. In addition, on the yaw axis Y, as in the swing braking means 32, the yaw braking means can be prepared in case the device shakes little by little due to a momentary gust or the like. The yaw braking means is pivoted in the vertical direction by the yaw driving means 50 so that the solar cell module panel 10 is positioned in a predetermined position in the vertical direction of the solar cell module panel 10 with respect to the yaw axis. Operation of the yawing shaft by the microcomputer is prevented from occurring so that the shaking of the yaw shaft is prevented. The operation of the yawing braking means is also made by the microcomputer. When the yaw braking means is not provided so that an error of the yaw shaft occurs, an operation for correcting the error is made and consumes driving power according to the error correction. In addition, if the error is not corrected correctly, the efficiency of power generation is lowered. In addition, in case of continuous rotation despite braking of the yawing braking means, a yaw position limit switch (not shown) and a yawing fixing stopper (not shown) are provided on one side of the yaw driving means. To finally brake the system.

4 is a cross-sectional view of a solar tracking system according to an embodiment of the present invention. As shown in FIG. 4, when the yaw driving means 50 is examined in detail, it can be seen that the crank 52, the connection link 53, and the fixed link 54 are formed. The yawing operation by the yaw driving means 50 can be seen through FIG. The yaw driving means 50 is a fixed link 54 connected to the solar cell module panel 10, a connecting link 53 connected to the fixed link 54, the connecting link 53 and the yawing driving means ( It comprises a crank 52 connected to 50). In addition, the more specific element of the yawing drive means 50, it consists of a link or rack pinion gear, and a chain gear belt.

Figure 6 shows a cross-sectional view of the solar tracking system according to another embodiment of the present invention, it can be seen that the yaw driving means 50 provided with a hydraulic or pneumatic cylinder.

The control means 60 is for controlling the driving of the swing driving means 40 and the yawing driving means 50. A rotary encoder is provided on the swing shaft and the yawing shaft, and the control means 60 is provided with a microcomputer. Real-time monitoring and correction by transmitting the amount of rotation and the rotation position signal by the rotary encoder to the microcomputer, by comparing the preset microcomputer input value by region and date by the rotary encoder on the swing axis and the yawing drive shaft This goes smoothly. The signal information related to the rotation by the rotary encoder is a rotation angle, a rotation direction, a rotation speed and an initial rotation origin, and the preset input value by the microcomputer is a value related to a preset solar normal altitude angle by region and date. Using meteorological and astronomical observations, the microcomputer's internal program is equipped with a high-precision clock chip to database the sun's location for each day and time of the day, 365 days a day, starting from the sunrise time, and tracking the data based on the date. Do it.

The control means 60 communicates with the control room via a communication means such as wireless or wired internet, and when the preset micom value and the measured value by the rotary encoder are different, the control means 60 can monitor and correct by automatic setting or manual setting. .

On the other hand, the control means 60 is the swing drive means to measure the amount of current flowing in the motor when the motor is provided in the swing drive means 40 and the yawing drive means 50 to generate a rotational force by receiving power When the amount of current measured by the amperometric sensor (not shown in the drawing) provided in the means 40 and the yawing driving means 50 reaches a preset value, the swing driving means 40 and the yawing driving means 50 Stop the drive of the motor. When the current flowing through the motor of the swing driving means 40 and the yawing driving means 50 is applied to the solar cell module panel 10 by a predetermined wind pressure or damage to mechanical parts such as bearings, the mechanical load increases. The current value is increased. According to the present invention, when the current value flowing through the motor becomes greater than or equal to a predetermined load as the load is applied to the system as described above, the current amount measuring sensor is damaged by the mechanical load on the system. It is characterized in that configured to prevent being.

In particular, such a mechanical load may be temporary. Therefore, in the present invention, the control means 60 stops the driving of the motors of the swing driving means 40 and the yawing driving means 50 when the current amount measured by the current amount measuring sensor reaches a preset value. Thereafter, when a predetermined time elapses, the system is controlled to restart the motor of the swing driving means 40 and the yawing driving means 50 to avoid the temporary mechanical load.

The support rail 70 is a rail to which the first reinforcing leg 80 and the second reinforcing leg 90 for reinforcing the supporting force of the swing shaft 30 are movably supported. As shown in FIG. 2, the support rail 70 is an annular shape having a larger diameter than the support plate 31 and is concentric with the support plate 31 so that the base 20 is centered on the swing axis S. As shown in FIG. Is installed on.

The first reinforcing leg 80 is rotated about the swing axis S along the support rail 70 to support the solar cell module panel 10 together with the swing shaft 30. An upper end of the first reinforcing bridge 80 is hinged to the rear surface of the solar cell module panel 10 so that the solar cell module panel 10 can be rotated about the yaw axis Y, and the lower end is disposed up and down. A pair of bearings are installed opposite each other.

The second reinforcing leg 90 is a means for smoothly maintaining the center of gravity of the swing shaft 30 while rotating about the swing axis S along the support rail 70. As shown in Figure 4, the second reinforcing leg 90 is also connected to the support bracket 55 serves to support the yaw driving means (50).

The lower part of the first reinforcing leg 80 and the second reinforcing leg 90, the machine is malfunctioned by the natural disaster or the influence of any environment, by the swing brake means 32 of the lower swing shaft 30 In case of continuous rotation despite braking, the swing position limit switch 91 and the swing fixing stopper 92 are provided to fix the swing shaft 30 so that the swing of the system is not finally made. . That is, the swing position detecting limit switch 91 is rotated in the left and right direction by the swing driving means 40 to detect and generate a signal when the solar cell module panel 10 is positioned at a predetermined position. The swing fixing stopper 92 fixes the swing shaft 30 not to rotate in accordance with a signal generated by the swing position detecting limit switch 91.

Solar tracking system according to the present invention is equipped with a sensor that can detect the external environment, such as a separate voltmeter, ammeter, hygrometer, solar meter, wind pressure gauge, pressure gauge, etc., as well as daily power production, typhoon, gust, snow, rain It automatically stops swinging and yawing to stop unnecessary motion, reducing power consumption, and protects the swinging and yawing device and the solar cell module panel 10.

The solar tracking system according to the present invention according to the present invention by the configuration as described above has the advantage that the solar cell module panel is divided into several to be folded by the folding drive means to prepare for strong wind or extreme weather.

In addition, the solar tracking system according to the present invention is provided with a braking means that can be prepared in case the device is slightly shaken by the momentary gusts, etc. in addition to the swing drive means and the yawing drive means is corrected by shaking the solar cell module panel left and right and up and down Has the advantage of preventing unnecessary operation of the swing and yawing drive means for.

In addition, the solar tracking system according to the present invention is applied to the motor provided in the swing driving means and the yawing driving means by applying a large load to the swing driving means and the yawing driving means due to wind pressure or mechanical damage to the solar cell module panel. In the case where the value of the flowing current reaches a value greater than or equal to a certain magnitude, it is advantageous to prevent damage to the system by stopping driving of the motor.

The solar tracking system described above and shown in the drawings is only one embodiment for carrying out the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

Claims (7)

A solar cell module panel for absorbing sunlight to produce electric power, and swing driving means for pivoting the solar cell module panel in a left and right direction about a swing axis; Yaw driving means for pivoting the solar cell module panel in the up and down direction about the yaw axis and a rotary encoder on the swing axis and the yaw axis to detect a rotation position to generate a rotation position signal and to generate the rotation position signal. And a control means for controlling the operation of the swing driving means and the yawing driving means by generating a monitoring and correction signal in real time compared to a preset value in the microcomputer, and connecting the solar cell module panel with the swing shaft. In the solar tracking system for rotating the sun around the axis to track the sunlight according to the change in the altitude and orientation of the sun, The solar cell module panel is divided into several panels and foldably connected, The solar tracking system, characterized in that the several panels are folded by the folding drive means. The method of claim 1, The folding drive means is provided with a wind pressure gauge for reaching a predetermined wind pressure value for a predetermined time in a predetermined time to the microcomputer, the solar tracking panel, characterized in that the solar cell module panel is operated to be folded. The method of claim 1, The microcomputer uses a weather chip and an astronomical observation, and has a clock chip that inputs preset values for each region, date, and climate according to the normal angle to the sun, and makes a database of the sun's position according to the date and time for 365 days. And setting rotational values of the swing axis and the yawing axis according to the position of the databased sun. The method of claim 1, The swing driving means and the yawing driving means are provided with a motor that generates rotational force by receiving electric power and a current amount measuring sensor for measuring the amount of current flowing through the motor. And the control means stops the driving of the motor of the swing driving means and the yawing driving means when the amount of current measured by the amperometric sensor reaches a preset value. The method of claim 4, wherein The control means stops driving the motors of the swing driving means and the yawing driving means when the current amount measured by the amperometric measurement sensor reaches a preset value, and then, when a predetermined time elapses, the swing driving means and the yawing. A solar tracking system, characterized in that for restarting the motor of the drive means. The method according to any one of claims 1 to 5, Swing brake means for preventing the swing of the left and right direction of the solar cell module panel with respect to the swing axis in a state in which the solar cell module panel is located in a predetermined position by being rotated in the left and right direction by the swing driving means; It further comprises a yawing braking means for preventing the shaking in the vertical direction of the solar module panel with respect to the yaw axis in a state in which the solar cell module panel is positioned in a predetermined position by the yawing driving means is located in a vertical position. Featured solar tracking system. The method of claim 6, A swing position detecting limit switch for turning on the left and right directions by the swing driving means and detecting a solar cell module panel at a predetermined position to generate a signal; A swing fixing stopper for fixing the swing shaft not to rotate according to a signal generated by the swing position detecting limit switch; Yaw position limit switch for generating a signal by detecting when the solar cell module panel is located at a predetermined position by turning in the vertical direction by the yaw driving means; And a yawing fixing stopper for fixing the yaw shaft so as not to rotate in response to a signal generated by the yaw position detecting limit switch.

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