KR101866786B1 - The system for folding solar photovoltaic structure - Google Patents

Abstract

As an embodiment of the present invention, a foldable photovoltaic structure system can be provided. The foldable photovoltaic structure system includes a photovoltaic structure arranged on a foundation stone, a motor for adjusting a tilt height of a panel part of the photovoltaic structure according to a wind speed, a screw rod connected to at least one arm of the motor and the photovoltaic structure, and a control unit for controlling the operation of the motor according to the wind speed. Accordingly, the present invention can obtain a minimum installation load and secure usage stability.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a foldable photovoltaic

The present invention relates to a folding solar power system, and more particularly, to a folding solar power system that includes a sunlight structure disposed on a foundation stone, a slope height adjuster for adjusting the slope height of the panel portion of the solar light structure, And a control unit for controlling the display unit.

Recently, as environmental problems related to nuclear power generation due to fossil fuel generation or nuclear fragmentation have emerged, interest in pollution-free new and renewable energy has been increasing. Among pollution-free new and renewable energies, pollution does not occur at all, With less noise and an unlimited energy source, interest in solar power generation is growing.

Solar power generation is often installed on the roof of a building in order to absorb solar energy and convert it into electric energy. In the case of installing a solar photovoltaic structure by applying a non-piercing method on the roof of a building , It is necessary to construct the structure with no problem in stability of the rooftop building while being safe to the wind pressure (for example, refer to KBC2016 of the building structure standard) only by the own weight of the photovoltaic structure in order to prevent the building stability and safety accident.

That is, when a solar photovoltaic structure is to be installed on the roof of a building, it is important to design the photovoltaic structure to withstand the wind pressure according to the local design wind speed only by the own weight of the solar photovoltaic structure, The weight of the foundation stone is very important. The reason why the weight of the foundation stone is important is that the components (supports, solar modules, inverters, connecting panels, and other materials) other than the foundations of the PV facilities are determined by the components of the PV facilities This is because the weight is fixed.

It is necessary to increase the load very much in order to withstand the wind pressure according to the local design wind speed by using only the self weight of the non-perforated solar photovoltaic structure installed on the roof of the building. However, since the allowable load of the roof slab is about 100 ~ 200 (kg / m ² ) in the case of the buildings built in Korea before 2000, it is necessary to use only the own weight of the solar structure to withstand the wind pressure according to the local design wind speed It is a difficult reality.

Accordingly, it is necessary to adjust the attitude (for example, the arrangement type) of the solar light structure according to the wind speed so that the solar wind structure can effectively withstand the wind pressure according to the wind speed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a solar cell structure (for example, a solar cell module panel or the like) in accordance with the wind speed so as to effectively withstand the wind pressure according to the wind speed, In order to provide a system for adjusting the tilt angle of the tilt angle.

The folding solar photovoltaic system according to one embodiment of the present invention includes a solar photovoltaic structure disposed on a foundation stone, an electric motor for adjusting a tilt height of a panel portion of the solar photovoltaic structure according to wind speed, and a control unit for controlling the operation of the electric motor in accordance with the screw load and the wind speed connected to the arm, wherein the solar module is provided with a panel portion on which the solar cell module is mounted and a panel portion inclined at an inclination angle corresponding to the wind speed And at least one arm for lifting up the upper end of the panel part.

An upper part of the solar light structure may be equipped with an air velocity sensor for measuring the wind speed.

Also, the arm of the solar light structure is formed by extending the upper arm part and the lower arm part of the same or different length around the pivotable hinge, the plurality of arms are connected to each other through the connecting rod, Through the hinged hinge of the arm of the arm.

Depending on the movement of the screw rod, the upper arm part and the lower arm part may be in contact with each other or may be arranged to form a predetermined angle, and the predetermined angle may have a value ranging from 1 degree to 180 degrees.

According to an embodiment of the present invention, the reference wind speed for controlling the operation of the electric motor can be determined by the control unit, the electric motor and the control unit can communicate with each other through wired or wireless communication, and the electric motor is rotated And the screw rod connected to the electric motor can be rotated clockwise or counterclockwise according to the operation of the electric motor, and the panel part can be inclined by the movement of the arm part according to the rotation of the screw rod.

The inclined angle of the solar light structure can be adjusted according to the wind speed by using the folding solar light structure system according to an embodiment of the present invention, so that the solar light structure can be installed on the roof of the building with minimum installation load.

In addition, in order to install the solar photovoltaic structure on the roof of the old building, it is necessary to install a foundation stone by a ball. The use of the solar photovoltaic system according to an embodiment of the present invention can flexibly cope with wind pressure by wind speed . That is, the photovoltaic structure can be easily installed on the roof of the old building, and after the installation, damage due to the wind or the like can be coped well, and the use stability can be assured.

In addition, the folding solar photovoltaic system according to one embodiment of the present invention can attain weight saving of about half or more (about 59%) compared with the conventional solar optical structure.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
1 shows a perspective view and a side view of a first type (type 1) photovoltaic structure.
Figure 2 shows a perspective view and a side view of a second type (type 2) photovoltaic structure.
3 is a block diagram of a folding photovoltaic system according to an embodiment of the present invention.
FIG. 4 is a flowchart illustrating an operation example of a folding solar photovoltaic system according to an embodiment of the present invention.
5 to 9 show an operation example of a folding photovoltaic structure according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

The terms used in this specification will be briefly described, and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. In addition, the term "part" or the like described in the specification means a unit for processing at least one function or operation. In addition, when a part is referred to as being "connected" to another part throughout the specification, it includes not only "directly connected" but also "connected in between" .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a perspective view and a side view of a first type (type 1) photovoltaic structure, and FIG. 2 shows a perspective view and a side view of a second type (type 2) photovoltaic structure.

A very large load is required to withstand the wind pressure according to the local design wind speed by using only the self weight of the non-perforated solar photovoltaic structure installed on the roof of the building. For example, in the case of TYPE 1 in FIG. 1, the load per unit area of the solar photovoltaic structure is 145.17 (kg / m ² ), and in case of TYPE 2, the load per unit area of the solar photovoltaic structure is about 163.26 kg / m ² .

In the case of buildings constructed before 2000 in Korea, the permissible load of roof slab is 100 ~ 200 (kg / m ² ), and it is difficult to apply the construction method of non-perforated solar photovoltaic structure to such a building. Here, most of the foundation stone design loadings of the non-perforated solar photovoltaic structure are wind pressure coefficients by wind speed, and the design wind speed differs according to the local area in Korea when referring to the regional basic wind speed of "KBC 2016 architectural structure design standard". For example, in the case of Seoul, the wind speed design factor is 26 (m / sec). In this case, the wind pressure coefficient (qh) of TYPE 1 in FIG. 1 may be about 229 (N / m ² ). When the wind speed design factor is selected as 20 (m / sec), the wind pressure coefficient (qh) of TYPE 1 can be about 136 (N / m ² ). That is, the weight of a solar photovoltaic structure designed with a wind speed design factor of 20 (m / sec) can be reduced to about 59 percent (%) of that of a solar photovoltaic structure with a wind speed design coefficient of 26 (m / sec). In other words, it means that a lightweight structure can be used as compared with the conventional structure. For example, in the case of TYPE 1 in the loading area photovoltaic structure unit ^{145.17 (kg / m 2) 87.1} (kg / m 2) with, 163.26 (kg / m ²⁾ under a load of per unit area photovoltaic structure unit TYPE 2 at 97.96 ( kg / m < ² >). Therefore, according to one embodiment of the present invention, since the allowable load of the general roof slab of a building is less than 100 (kg / m ² ), it is possible to install a non-perforated solar photovoltaic structure on the roof of most domestic buildings.

FIG. 3 is a block diagram of a folding solar photovoltaic system according to an embodiment of the present invention, FIG. 4 is a flowchart illustrating an operation example of a folding solar system structure according to an embodiment of the present invention, FIGS. 5 to 9 (Perspective view, side view, etc.) of the folding solar optical structure according to one embodiment of the present invention.

A foldable solar system structure 1000 according to an embodiment of the present invention includes a solar cell structure 100 disposed on a foundation stone 10 and a slope height of a panel portion 110 of the solar cell structure 100 according to a wind speed A screw rod 220 connected to at least one arm 120 of the photovoltaic structure 100 and an electric motor 210 for controlling the operation of the electric motor 210 according to the wind speed The solar module 100 includes a panel unit 110 having a solar cell module mounted thereon and a panel unit 110 having a tilted angle corresponding to the wind speed. At least one arm 120 for lifting the top portion may be included.

An air speed sensor 400 for measuring the wind speed may be additionally mounted on the upper end of the solar power structure 100.

The arm 120 of the solar light structure is formed in such a manner that an upper arm part 121 and a lower arm part 122 having the same or different lengths are formed extending from the pivotable hinge 130, respectively, And the connecting rod 140 may be connected through the pivotable hinge 130 of each arm.

The upper arm part 121 and the lower arm part 122 may be arranged to contact each other or to form a predetermined angle in accordance with the movement of the screw rod 220. The predetermined angle may have a value ranging from 1 degree to 180 degrees have.

According to an embodiment of the present invention, the reference wind speed for controlling the operation of the electric motor 210 can be determined by the controller 300. The electric motor 210 and the controller 300 are connected to each other by a network, The electric motor 210 rotates by a predetermined number of revolutions in accordance with the wind speed and the screw rod 220 connected to the motor 210 is rotated clockwise or counterclockwise according to the operation of the electric motor 210. [ And the panel part 110 can be inclined by the movement of the arm parts 121 and 122 according to the rotation of the screw rod 220. [ The reference wind speed according to an embodiment of the present invention may be referred to as a design wind velocity. This design wind speed can be, for example, 20 (m / sec).

The electric motor 210 is a DC electric motor, and can control the rotation of the screw rod. In addition, according to an embodiment of the present invention, the control unit 300 may be a web-based electronic device, and the control unit 300 may include a PC, a smart phone, a tablet PC, a laptop, A wearable device, and the like, but the present invention is not limited thereto. The user can monitor the state of the solar photovoltaic structure through the controller 300 in real time.

Referring to FIG. 4, the wind speed of the surrounding environment of the area where the solar cell structure 100 is installed can be measured by the wind speed sensor 400 (S100). The measured data can be transmitted in real time to the control unit 300 through the network. In addition, the control unit 300 can collect wind speed data of an area from an external organization such as the Korea Weather Service. Using the current wind speed measured by the wind speed sensor 400 and the wind speed data collected from an external engine, . If the wind speed measured by the wind speed sensor 400 is equal to or higher than the reference wind speed, the control unit 300 may transmit a control signal to operate the tilting height adjusting unit 200 (S200). The slope height adjuster 200 may be operated according to a control signal provided from the controller 300 (S300). For example, when the wind speed detected by the wind speed sensor 400 located at the upper end of the solar power structure 100 is 20 m / sec or more, the control unit 300 determines that the current wind speed is 20 m / And transmit the control signal through the network so that the inclination height adjusting unit 200 such as the electric motor 210 is operated according to the determination result. The slope height adjuster 200 operates according to a signal transmitted from the controller 300. For example, the DC motor 210 is operated to rotate the screw rod 220 attached to the motor 210, Accordingly, the inclination height of the panel unit 110 of the solar cell structure can be adjusted. When the pont is 20 m / sec or more, the slope height of the panel part 110 is lowered to prevent damage or loss of the solar photovoltaic structure due to wind. In addition, when it is determined that the wind speed is gradually increasing, the inclination angle of the solar light structure 100 can be minimized until the wind speed is slowed down. For example, as shown in FIG. 5, the inclination angle of the solar cell structure 100 can be minimized to 0 degree or 1 degree. The upper arm part 121 and the lower arm part 122 may be in contact with each other. Whether the upper arm part 121 and the lower arm part 122 are in contact with each other can be confirmed by mounting a contact sensor on the upper arm part 121 and the lower arm part 122 or by using a limit switch or the like. It is also possible to check whether the upper arm part 121 and the lower arm part 122 are in contact with each other through checking the rotation speed of the DC electric motor 210 or the like. The inclined height h1 of the solar light structure 100 when the upper arm part 121 and the lower arm part 122 are in contact may be about 800 millimeters or less. Even if the upper arm part 121 and the lower arm part 122 are in contact with each other as shown in FIG. 5B, the lower end of the panel part 110 of the solar cell structure 100 comes to a lower position than the upper end part, Thereby naturally creating a rising flow path. Accordingly, even if strong winds are blown, the wind can naturally ride on the panel portion 110, so that the damage caused by the wind can be minimized.

When the wind speed measured by the wind speed sensor 400 is equal to or lower than the reference wind speed, the controller 300 transmits a control signal to the slope height adjuster 200 so that the slope height adjuster 200 operates to increase the slope height . As shown in Fig. 6, the inclination height of the panel portion 110 can be further increased as compared with Fig. In addition, the inclination height can be adjusted according to the altitude of the sun in addition to the wind speed. The control unit 300 can adjust the inclination height of the panel unit 110 such that the angle formed by the panel unit 110 and the sunlight is close to vertical. That is, the control unit 300 can immediately change the tilt height (or the tilt angle) according to the operation efficiency determination result of the panel unit 110.

7, the upper arm part 121 and the lower arm part 122 may be arranged to form an angle of 180 degrees. In this case, the inclined height h2 of the solar cell structure 100 may be about 1700 millimeters (mm) or more.

The operation of the foldable solar array system 1000 according to an embodiment of the present invention will be described in more detail as follows.

(Or 20 m / sec) measured from the wind speed sensor 400, the inclination height (or the inclination angle) can be adjusted according to the altitude of the sun. That is, the foldable photovoltaic structure 100 can be adjusted in inclination height based on at least one of altitude and wind speed of the sun.

If the wind speed is more than 20 m / sec, a control signal for operation is provided from the controller 300 to the slope height adjuster 200, and a power circuit switch (not shown) of the slope height adjuster 200 is turned on (ON) DC motor 210 to be driven. When the DC motor 210 is driven, the screw rod 220 connected to the DC motor 210 starts rotating in the right direction (clockwise direction). When the DC motor 210 rotates, the arm 220 connected to the screw rod 220, Is pulled toward the electric motor 210, and the inclined height gradually decreases as the arm is pulled. Since the plurality of arms are connected to each other by the connecting rod 140, when one of the arms is moved, the arms connected to the connecting rod 140 simultaneously move at the same time. The screw rod 220 is continuously rotated by a predetermined number of revolutions (or DC motor output) of the motor 210 according to the wind speed. When the predetermined number of revolutions is reached, the operation of the DC motor 210 is stopped and the DC motor 210 transmits a "operation completed" signal to the control unit 300 through the network.

Thereafter, when the wind speed is changed to 20 (m / sec) or less, the control unit 300 can operate similarly as described above, but the direction of rotation of the screw rod 220 may be opposite to the above description. That is, the screw rod 220 starts to rotate left (counterclockwise), and the arm connected to the screw rod 220 is pushed away from the electric motor 210 in accordance with the rotation of the screw rod 220, As the arm is pushed and spread, the slope height gradually increases. The screw rod 220 is rotated by the predetermined number of rotations of the electric motor 210 according to the wind speed and when the operation of the electric motor 210 is stopped, the electric motor 210 transmits a " .

8, the inclination height adjusting unit 200 may be formed to be operated by a telescopic type, a hydraulic type, a pneumatic type, an electric type or a manual type. That is, the user can configure the inclination height adjusting unit 200 in a customized manner to adjust the inclination height in a preferred manner.

FIG. 9 is a view for comparison between the maximum inclination height and the minimum inclination height, and the inclination height of the solar photovoltaic system 100 can be changed according to the wind speed, the altitude of the sun, and the like.

The slope height adjusting unit 200 includes the electric motor 210 and the screw rod 220 in order to facilitate understanding. However, the slope height adjusting unit 200 may be formed by using a hydraulic pump and a hydraulic chain, The inclination height may be adjusted.

In addition, the CCTV and the like can be installed adjacent to the solar light structure 100, and images and moving images photographed through the CCTV are transmitted to the control unit 300 so that the user can visually check the control state of the solar light structure in real time It is possible.

Further, even in an emergency situation where the electric motor 210 or the like is broken, the screw rod 220 can be rotated manually or manually in the clockwise or counterclockwise direction between the motor 210 and the screw rod 220 There may be additional rotary knobs.

The numerical values and the like used in the above description are for explanation purposes only, and are not necessarily limited thereto. It will be understood by those skilled in the art that the foregoing description of the present invention has been presented for illustrative purposes, and that those skilled in the art will readily understand that various changes in form and details may be made therein without departing from the spirit and scope of the present invention. It will be possible. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: foundation stone
100: folding solar power structure 110: panel part
120: arm 121: upper arm part
122: lower arm part
130: rotatable hinge 140: connecting rod
200: inclination height adjusting portion
210: electric motor 220: screw rod
300: control unit 400: wind speed sensor
1000: Foldable photovoltaic system

Claims (5)

As a folding photovoltaic system,
A photovoltaic structure mounted on a plurality of foundation rocks;
An electric motor for adjusting a tilt height of a panel portion of the solar photovoltaic structure according to a wind speed;
A screw rod connected to at least one arm of the motor and the photovoltaic structure; And
And a control unit for controlling the operation of the electric motor according to the wind speed,
In the solar cell structure,
A panel portion on which the solar cell module is mounted;
An air speed sensor installed at a top end of the panel unit for measuring the wind speed; And
And a plurality of arms for lifting an upper end portion of the panel portion so that the panel portion is inclined at an inclination angle corresponding to the wind speed,
The arm is formed in such a manner that an upper arm part and a lower arm part having the same or different lengths are formed extending from the pivotal hinge,
Wherein the plurality of arms are interconnected through a connecting rod and the connecting rod is connected through a pivotable hinge of the plurality of arms such that the plurality of arms interconnected through the connecting rod when the screw rod is rotated together The panel portion can be inclined by being moved,
The reference wind speed for controlling the operation of the electric motor can be determined by the control unit, the electric motor and the control unit can communicate with each other,
Wherein the controller controls the motor to operate when the wind speed measured by the wind speed sensor is greater than a value corresponding to the reference wind speed so that the height of the upper end of the panel is lowered according to the rotation of the screw rod, The height of the upper end portion of the panel portion is adjusted according to the rotation of the screw rod by operating the motor according to the altitude of the sun when the measured wind speed value is less than the reference wind speed. Folding photovoltaic system.
delete delete The method according to claim 1,
The upper arm part and the lower arm part may be arranged to contact each other or to form a predetermined angle in accordance with the movement of the screw rod,
Wherein the predetermined angle has a value ranging from 1 degree to 180 degrees.
delete

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