WO2018212409A1

WO2018212409A1 - System for foldable photovoltaic structure

Info

Publication number: WO2018212409A1
Application number: PCT/KR2017/010806
Authority: WO
Inventors: 최동수; 고성훈; 최장군
Original assignee: (주)아이엠
Priority date: 2017-05-16
Filing date: 2017-09-28
Publication date: 2018-11-22
Also published as: KR101866786B1

Abstract

A system for a foldable photovoltaic structure may be provided as an embodiment of the present invention. The system for a foldable photovoltaic structure may comprise: a photovoltaic structure disposed on a base stone; an electric motor for adjusting the tilt height of a panel unit of the photovoltaic structure according to wind speed; a screw rod connected to the electric motor and to at least one arm of the photovoltaic structure; and a control unit for controlling the operation of the electric motor according to the wind speed.

Description

Foldable Solar Structure System

The present invention relates to a foldable solar structure system, and more particularly, the solar structure disposed on the foundation stone, the operation of the inclination height adjustment unit and the inclination height adjustment unit for adjusting the inclination height of the panel portion of the solar structure according to the wind speed It may include a control unit for controlling the.

This specification claims the benefit of the filing date of Korean Patent Application No. 10-2017-0060653 filed with the Korea Intellectual Property Office on May 16, 2017, the entire contents of which are included in the present invention.

Recently, as environmental problems for nuclear power generation due to fossil fuel power generation or nuclear fission have emerged, interest in pollution-free renewable energy is increasing, and since no pollution occurs in pollution-free renewable energy, clean, mechanical vibration and Interest in solar power is increasing in that it is low in noise and is an unlimited energy source.

Since solar power is absorbed and converted into electrical energy, it is often installed on the roof of a building for direct absorption of solar energy. In order to ensure the stability of buildings and safety accidents, they must be constructed in a structure that is safe to wind pressure (for example, refer to KBC2016) based on the weight of the solar structure itself and has no problem on rooftop stability.

That is, when the solar structures should be installed on the roof of the building by applying the no-pore method, it is important to design the solar structures to withstand the wind pressure according to the local design wind speed only by the weight of the solar structures themselves. The calculation of the weight of the foundation stone is a very important problem. The calculation of the weight of the basic stone is an important issue because the components (supports, solar cell modules, inverters, connection boards, and other materials) except for the basic stones of the photovoltaic power generation facilities are determined once the solar capacity is determined. Because the weight is fixed.

Using only its own weight of the non-perforated solar structure installed on the roof of the building, the load must be made very large in order to withstand the wind pressure according to the local design wind speed. However, in the case of buildings constructed in Korea before 2000, the allowable load of rooftop slabs is about 100 ~ 200 (kg / m ² ), so it is not possible to withstand the wind pressure according to the local design wind speed using only the weight of the solar structure. It is a difficult reality.

Therefore, it is necessary to adjust the posture (for example, arrangement form) of the solar structure according to the wind speed so as to effectively withstand the wind pressure according to the wind speed in the state where the solar structure is installed.

The present invention has been made to solve the above problems, the solar structure (for example, solar cell module panel, etc.) according to the wind speed to effectively withstand the wind pressure according to the wind speed in a state in which the solar structure is installed on the roof of a building, etc. To provide a system for adjusting the angle of inclination

The folding solar structure system according to an embodiment of the present invention is a solar structure disposed on the base stone, at least one arm of the electric motor, the motor and the solar structure for adjusting the inclination height of the panel portion of the solar structure according to the wind speed The control unit for controlling the operation of the motor according to the screw rod and the wind speed connected to the arm (arm), and in such a solar structure, the panel unit on which the solar cell module is mounted and the panel unit is inclined at an inclination angle corresponding to the wind speed At least one arm may be included to lift the upper end of the panel.

The upper end of the solar structure may be equipped with a wind speed sensor for measuring the wind speed.

In addition, the arm of the solar structure is formed by extending the upper arm part and the lower arm part of the same or different length around the pivoting hinge, respectively, a plurality of arms are interconnected through the connecting rod, the connecting rod is each It may be connected through the pivoting hinge of the arm.

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

According to an embodiment of the present invention, the reference wind speed for controlling the operation of the motor may be determined by the controller, the motor and the controller may communicate with each other by wire or wireless communication, and the motor rotates by a predetermined rotation speed according to the wind speed. In addition, the screw rod connected to the motor may be rotated in a clockwise or counterclockwise direction according to the operation of the electric motor, and the panel part may be tilted due to the movement of the arm part according to the rotation of the screw rod.

When using the foldable solar structure system according to an embodiment of the present invention, the inclination angle of the solar structure can be adjusted according to the wind speed, so that the solar structure can be installed on the roof of a building to have a minimum installation load.

In addition, in order to install a solar structure on the roof of an old building, it is necessary to install a foundation stone without perforation, using the folding solar structure system according to an embodiment of the present invention can flexibly cope with the wind pressure caused by the wind speed. . That is, the solar structure can be easily installed on the roof of an old building, and can also be robustly coped with damage, loss, or the like due to wind after installation, and thus, stability of use can be ensured.

In addition, the foldable solar structure system according to an embodiment of the present invention can achieve a weight reduction of more than half (about 59%) compared to the existing solar structure.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are provided to facilitate understanding of the present invention, and provide embodiments of the present invention together with the detailed description. However, 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 solar structure of the first type (type 1).

2 shows a perspective and side view of a second type of solar structure.

Figure 3 is a block diagram of a foldable solar structure system according to an embodiment of the present invention.

Figure 4 is a flow chart showing an operation example of the foldable solar structure system according to an embodiment of the present invention.

5 to 9 show an operation example of the foldable solar structure according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Terms used herein will be briefly described and the present invention will be described in detail.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, terms, such as "... part" described in the specification means a unit for processing at least one function or operation. In addition, when a part of the specification is said to be "connected" to another part, this includes not only "directly connected", but also "connected with other components in the middle". .

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

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

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

In the case of buildings installed before 2000 in Korea, the permissible load of the roof slabs is 100 ~ 200 (kg / m ² ), so it is difficult to apply the non-porous solar structure construction method to these buildings. Here, most of the design load calculation of the foundation-free solar structure foundation stone is a wind pressure coefficient by the wind speed. Referring to the regional basic wind speed of the "KBC 2016 Architectural Structural Design Standard", the design wind speed varies by region in Korea. For example, in the case of the Seoul area, the wind speed design coefficient is 26 (m / sec). In this case, the wind pressure coefficient qh of TYPE 1 of FIG. 1 may be about 229 (N / m ² ). If the wind speed design coefficient is set to 20 (m / sec), the wind pressure coefficient qh of TYPE 1 may be about 136 (N / m ² ). That is, the weight of the solar structure designed with the wind speed design factor 20 (m / sec) may be reduced to about 59 percent (%) of the solar structure with the wind speed design factor 26 (m / sec). In other words, it is possible to use a light-weight solar structure compared to the prior art. For example, in the case of TYPE 1, the load per unit area of the solar structure is 145.17 (kg / m ² ) to 87.1 (kg / m ² ), and the load per unit area of the solar structure of the TYPE 2 is 163.26 (kg / m ² ) to 97.96 ( kg / m ² ) can be designed low. Therefore, according to an embodiment of the present invention, since the general building rooftop slab allowable load is satisfied within 100 (kg / m ² ), it is possible to install a non-porous solar structure on the roof of most domestic buildings.

Figure 3 is a block diagram of a foldable solar structure system according to an embodiment of the present invention, Figure 4 is a flow chart showing an operation example of the foldable solar structure system according to an embodiment of the present invention, Figures 5 to 9 Shows an operation example (perspective view, side view, etc.) of the foldable solar structure according to an embodiment of the present invention.

Folding solar structure system 1000 according to an embodiment of the present invention is the solar structure 100 disposed on the foundation stone 10, the inclination height of the panel unit 110 of the solar structure 100 according to the wind speed Controlling the operation of the motor 210 according to the electric motor 210, the motor 210, and the screw rod 220 connected to at least one arm 120 of the photovoltaic structure 100 and the wind speed. It includes a control unit 300, the solar panel 100, the panel unit 110 is mounted to the solar cell module and the panel unit 110 so that the panel unit 110 is inclined at an inclination angle corresponding to the wind speed. At least one arm 120 may be included for lifting the upper end.

The upper end of the solar structure 100 may be additionally equipped with a wind speed sensor 400 for measuring the wind speed.

In addition, the arm 120 of the solar structure is formed by extending the upper arm part 121 and the lower arm part 122 of the same or different length around the pivoting hinge 130, the plurality of arms The interconnecting rods 140 are connected to each other, and the connecting rods 140 may be connected through the pivoting hinges 130 of the respective arms.

As the screw rod 220 moves, the upper arm part 121 and the lower arm part 122 may be in contact with each other or may be arranged to form a predetermined angle, and the predetermined angle may have a range of 1 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 may be determined by the controller 300, and the electric motor 210 and the controller 300 are connected to a network to each other by wire or wireless communication. Communication is possible, the motor 210 is rotated by a predetermined number of revolutions in accordance with the wind speed, the screw rod 220 connected to the motor 210 can be rotated clockwise or counterclockwise according to the operation of the motor 210. The panel 110 may be tilted 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 speed. Such a design wind speed may be 20 (m / sec), for example.

The electric motor 210 is a DC electric motor, and may 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 smartphone, a tablet PC, a laptop, a mobile display device, a smart watch, and the like. A wearable device may be included, but is not necessarily limited thereto. The user may monitor the state of the solar structure in real time through the control unit 300.

Referring to FIG. 4, the wind speed of the surrounding environment of the region in which the solar structure 100 is installed may be measured by the wind speed sensor 400 (S100). The measured data may be transmitted to the controller 300 in real time through a network. In addition, the controller 300 may collect the wind speed data of the region from an external organization such as the Meteorological Agency, and the future wind speed using the current wind speed measured by the wind speed sensor 400 and the wind speed data collected from the external engine. You can also predict When the wind speed measured by the wind speed sensor 400 is greater than or equal to the reference wind speed, the controller 300 may transmit a control signal to operate the inclination height adjusting unit 200 (S200). The tilt height adjusting unit 200 may be operated according to the control signal provided from the controller 300 (S300). For example, when the wind speed detected by the wind speed sensor 400 located at the top of the solar structure 100 is 20 (m / sec) or more, the controller 300 indicates that the current wind speed is 20 (m / sec). ", And transmits a control signal through the network so that the inclination height adjusting unit 200 such as the electric motor 210 is operated in accordance with the determination result. In the inclination height adjustment unit 200 is operated according to the signal transmitted from the control unit 300, for example, by operating the DC motor 210 to rotate the screw rod 220 attached to the motor 210, Accordingly, the inclination height of the panel unit 110 of the solar structure can be adjusted. When the fond is 20 (m / sec) or more, the inclination height of the panel 110 is lowered to prevent damage to the solar structure due to wind and loss. In addition, when it is determined that the wind speed gradually increases, the inclination angle of the solar structure 100 may be minimized until the wind speed becomes slow. For example, as shown in FIG. 5, the inclination angle of the solar structure 100 may be minimized, such as 0 degrees or 1 degrees. 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 may 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. In addition, whether or not the upper arm part 121 and the lower arm part 122 contact each other may be checked by checking the rotation speed of the DC motor 210. When the upper arm part 121 and the lower arm part 122 contact each other, the inclination height h1 of the solar structure 100 may be about 800 millimeters (mm) or less. As shown in FIG. 5B, even when the upper arm part 121 and the lower arm part 122 contact each other, the lower end of the panel unit 110 of the solar structure 100 is positioned at a lower position than the upper end of the air. To naturally create an upward flow of. Accordingly, even if a strong wind blows, since the wind may naturally ride over the panel unit 110, the damage caused by the wind may be minimized.

When the wind speed measured by the wind speed sensor 400 is less than or equal to the reference wind speed, the control unit 300 transmits a control signal toward the inclination height adjusting unit 200 so that the inclination height adjusting unit 200 is operated to increase the inclination height. Can be. As shown in FIG. 6, the inclination height of the panel unit 110 may be higher as compared with FIG. 5. In addition, the inclination height may be adjusted according to the altitude of the sun in addition to the wind speed. The controller 300 may adjust the inclination height of the panel 110 so that the angle formed by the panel 110 with sunlight is close to the vertical. That is, the controller 300 may immediately change the inclination height (or inclination angle) according to the result of determining the operation efficiency of the panel unit 110.

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

Looking at the operation of the folding solar structure system 1000 according to an embodiment of the present invention in more detail.

When the reference wind speed measured from the wind speed sensor 400 is less than or equal to 20 m / sec, the inclination height (or inclination angle) may be adjusted according to the altitude of the sun. That is, the foldable solar structure 100 may be adjusted inclination height based on at least one of the altitude and wind speed of the sun.

If the wind speed (20m / sec) or more, the control signal for the operation from the control unit 300 to the inclination height adjustment unit 200 is provided, the power circuit switch (not shown) of the inclination height adjustment unit 200 is turned on (ON) Power is supplied to and driven by the DC motor 210. When the DC motor 210 is driven, the screw rod 220 connected to the DC motor 210 starts to rotate to the right (clockwise), and the arm connected to the screw rod 220 according to the rotation of the screw rod 220. Pulled toward the electric motor 210, the inclination height is gradually lowered as the arm is pulled. Since a plurality of arms are connected to each other by the connecting rod 140, when any one arm is moved, the arms connected to the connecting rod 140 are moved at the same time. The screw rod 220 continuously rotates by the rotational speed (or the DC motor output) of the preset motor 210 according to the wind speed, and when the set speed is reached, the operation of the DC motor 210 is stopped and the DC motor ( In operation 210, a signal of “operation completion” is transmitted to the controller 300 through the network.

Subsequently, when the wind speed is changed to 20 (m / sec) or less, the controller 300 may operate similarly to the above, except that the rotation direction of the screw rod 220 may be opposite to the above description. That is, the screw rod 220 starts to rotate to the left (counterclockwise), and the arm connected to the screw rod 220 is pushed away from the electric motor 210 as the screw rod 220 rotates. As the arm is pushed out, the incline height gradually increases. The screw rod 220 rotates by a predetermined number of revolutions 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 signal of "operation completed" through the network to the controller 300. Will be sent to.

As shown in FIG. 8, the inclination height adjusting unit 200 may be formed to operate in a telescope type, hydraulic type, pneumatic type, electric type, or manual type. That is, the user may configure the inclination height adjustment unit 200 to be customized in order to adjust the inclination height in a preferred manner.

9 is shown together to compare when the inclination height is the maximum and when the inclination height is the minimum, the inclination height of the solar structure 100 may be changed according to the wind speed, the altitude of the sun.

For convenience of explanation for convenience of explanation, the inclination height adjusting unit 200 is an example consisting of an electric motor 210 and a screw rod 220, but using a "hydraulic pump and hydraulic rod" or "chain", etc. The inclination height may be adjusted.

In addition, CCTV and the like can be installed adjacent to the solar structure 100, the image and video taken through the CCTV is transmitted to the control unit 300 so that the user can visually check the control state of the solar structure in real time It may be.

In addition, even in an emergency situation in which the electric motor 210 and the like fail, the screw rod 220 may be rotated in a clockwise or counterclockwise direction manually by a user. The rotary knob may be further mounted.

Numerical values and the like used in the above description are for explanation, and are not necessarily limited thereto. In addition, the above description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains may understand that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. Could be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims

A foldable solar structure system,

A solar structure disposed on the foundation stone;

An electric motor for adjusting the inclination height of the panel unit of the solar structure according to the wind speed;

A screw rod connected to the electric motor and at least one arm of the solar structure; And

A control unit for controlling the operation of the electric motor in accordance with the wind speed,

The solar structure,

A panel unit on which the solar cell module is mounted; And

And at least one arm for lifting an upper end portion of the panel portion such that the panel portion is inclined at an inclination angle corresponding to the wind speed.
The method of claim 1,

The upper end of the solar structure foldable solar structure system, characterized in that the wind speed sensor for measuring the wind speed is mounted.
The method of claim 1,

Arms of the solar structure is a form formed by extending the upper arm part and the lower arm part of the same or different length around the pivoting hinge, respectively,

A plurality of arms are interconnected through a connecting rod, the connecting rod is connected through the pivoting hinge of each arm, characterized in that the foldable solar structure system.
The method of claim 3, wherein

According to the movement of the screw rod, the upper arm part and the lower arm part may be arranged to be in contact with each other or to form a predetermined angle,

The predetermined angle is a foldable solar structure system, characterized in that having a range value of 1 degree to 180 degrees.
The method of claim 3, wherein

The reference wind speed for controlling the operation of the electric motor may be determined by the controller, the electric motor and the controller may communicate with each other by wire or wireless communication, and the motor may rotate by a predetermined rotation speed according to the wind speed, Foldable solar structure, characterized in that the screw rod connected to the motor is rotatable in a clockwise or counterclockwise direction according to the operation of the motor and the panel portion is inclined by the movement of the arm part according to the rotation of the screw rod. system.