KR101471050B1 - Solar generating apparatus solving problem of shadow - Google Patents

Abstract

The present invention relates to a photovoltaic power generation apparatus having a photovoltaic module to condense sunlight comprising: a first reflection mirror installed by being separated from both sides of the photovoltaic module, installed to face the sunrise and sunset directions, consisting of a concave mirror to condense and reflect incident sunlight, and having a sunlight tracking device to efficiently condense sunlight by changing a position in response to the altitude change in the sun; and a second reflection mirror installed by being separated from the first reflection mirror to face the first reflection mirror, and consisting of a convex mirror to reflect sunlight by diffusing the sunlight, which is condensed and reflected from the first reflection mirror, into the photovoltaic module. Disclosed is the photovoltaic power generation apparatus to solve a shadow area capable of solving the shade area formed in the photovoltaic module according to the altitude change in the sun by transmitting sunlight condensed through the first reflection mirror to the photovoltaic module through the second reflection mirror, and changing the angle of the first reflection mirror to correspond to the altitude change in the sun.

Description

SOLAR GENERATING APPARATUS SOLVING PROBLEM OF SHADOW [0002]

The present invention relates to a solar photovoltaic power generation apparatus, and more particularly, to a solar photovoltaic power generation system including a solar photovoltaic module for condensing sunlight, the solar photovoltaic power generation system comprising: And is formed as a concave mirror so as to condense and reflect incident sunlight and is capable of changing the position in accordance with the change in altitude of the sun so as to efficiently condense the sunlight. A first reflection mirror; And a second reflection mirror installed to be opposed to the first reflection mirror and being formed of a convex mirror so as to diffuse and reflect the sunlight reflected and reflected by the first reflection mirror to the solar module, And transmitting the sunlight condensed through the first reflecting mirror to the solar module through the second reflecting mirror, wherein the angle of the first reflecting mirror is changed so as to correspond to the altitude change of the sun, The present invention relates to a photovoltaic device in which a shade area formed in a solar module is eliminated.

In recent years, various types of alternative energy sources, clean energy sources, and environmentally friendly energy sources that can replace fossil fuels have been developed due to depletion of fossil fuels and environmental pollution. One of them is how to use solar energy.

The use of solar energy can be divided into three types. One is to convert the solar energy to heat energy and use it as heating or hot water, or the solar heat system to get electric energy by operating the generator with converted heat energy The other is to convert sun light energy into direct electric energy by using solar cell, solar cell, and so on. Is a photovoltaic system.

In any case, a device for collecting solar energy is needed to utilize solar energy. As a device for collecting solar energy, a solar light collecting plate and a solar panel, which absorb energy normally in direct sunlight, are used. Such a solar panel has a structure in which a plurality of solar cells or piping for circulating a working fluid are installed in a flat plate-like structure, and the efficiency is changed depending on the altitude of the sun.

On the other hand, in the case of a power generation facility using solar energy, a plurality of solar concentrators are usually installed on a flat large-scale site. Due to the nature of solar power, it is impossible to stack two or more solar concentrators together. The site becomes necessary. This not only complicates the power transmission structure for transmitting the power generated by the generator or the actuator to each solar light collecting plate, but also increases the amount of power lost in the transmission process.

However, in the case of arranging a plurality of solar light collecting plates, there is a problem that shading occurs due to interference between them, the sun does not rise above a certain angle, or solar light can not be absorbed due to the influence of the weather condition. Programs and devices (solar tracking or tracking devices) are being developed to track the sun in order to accurately view the sun to solve the problem.

For example, Korean Patent Publication No. 83-2206 (Publication date: 1983.5.23), No. 93-978 (Publication date: 1993.1.16), No. 97-16643 (Publication date: Apr. 28, 1997) 01-25541 (Publication date: Apr. 6, 2001). However, many of such conventional solar tracking methods are designed to be programmatically controlled by a microprocessor, so that the configuration is very complicated and lacks precision So that it is not practically used.

In addition, a heat plate for collecting more sunlight or solar heat is provided in Korean Registered Patent No. 185653 (registered date: 1998.12.28), registered utility model 210608 (registered date: Nov. 6, 2000), registered utility model 194013 (Publication Date: June 16, 2000), Published Patent Application No. 2001-44368 (Published Date: June 5, 2001) and Published Patent Application No. 2001-44369 (Published Date: June 5, 2001) It is not only very complicated but also lacks precision and the chip effect is lowered and it is not practically used.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a photovoltaic power generation facility in which a photovoltaic module for collecting sunlight is installed, So that the efficiency is lowered.

In order to achieve the above object, the present invention provides a solar photovoltaic device including a solar module for condensing solar light, the solar module being installed on both sides of the solar module and facing the sunrise direction and the sunset direction of the sun The first reflecting mirror is formed of a concave mirror so as to reflect incident sunlight and reflects the sunlight. The first reflecting mirror is provided with a sunlight position tracking device so that the sunlight can be efficiently condensed by changing the position corresponding to the altitude change of the sun. and; And a second reflection mirror installed to be opposed to the first reflection mirror and being formed of a convex mirror so as to diffuse and reflect the sunlight reflected and reflected by the first reflection mirror to the solar module, And transmitting the sunlight condensed through the first reflecting mirror to the solar module through the second reflecting mirror, wherein the angle of the first reflecting mirror is changed so as to correspond to the altitude change of the sun, The shade area formed in the solar module is eliminated.

In addition, the solar ray position locating apparatus according to the present invention may further include: a first support vertically installed on a rear surface of the first reflection mirror; A first driving motor installed inside the first support; A first gear coupled to a rotating shaft of the first driving motor; A second gear coupled to a rear surface of the first reflecting mirror and installed to be engaged with the first gear; An illuminance sensor installed on a front surface of the first reflecting mirror for detecting an altitude change of the sun; And a first controller interlocked with the illuminance sensor and the first driving motor and rotating the first driving motor to rotate the first mirror so as to correspond to the altitude of the sun sensed by the illuminance sensor .

Further, the solar location system according to the present invention includes a second support vertically installed on a rear surface of the first reflection mirror, A second drive motor installed inside the second support; A third gear coupled to a rotational axis of the second driving motor; A fourth gear coupled to a rear surface of the first reflecting mirror and installed to be engaged with the third gear; The second driving motor is electrically connected to the second driving motor and stores the rotation time of the first reflecting mirror corresponding to the time preset by the user and the corresponding time, And a second controller for rotating the reflecting mirror.

In addition, the present invention provides a mirror system comprising: a third support provided on a rear surface of the second reflecting mirror and vertically installed on the ground; A third driving motor installed vertically inside the third support; A fifth gear coupled to a rotation axis of the third drive motor; A sixth gear coupled to a rear surface of the second reflecting mirror and installed to be engaged with the fifth gear; And a third controller which is electrically connected to the third driving motor and drives the third driving motor to rotate the second reflecting mirror by receiving the rotation value of the first reflecting mirror transmitted from the first controlling unit And the second reflecting mirror is rotated at the same angle by the angle of rotation of the first reflecting mirror so that sunlight reflected from the first reflecting mirror can be more smoothly reflected by the solar cell module .
In addition, the present invention provides a mirror system comprising: a third support provided on a rear surface of the second reflecting mirror and vertically installed on the ground; A third driving motor installed vertically inside the third support; A fifth gear coupled to a rotation axis of the third drive motor; A sixth gear coupled to a rear surface of the second reflecting mirror and installed to be engaged with the fifth gear; And a third controller which is electrically connected to the third driving motor and drives the third driving motor to rotate the second reflecting mirror by receiving the rotation value of the first reflecting mirror transmitted from the second controlling unit And the second reflecting mirror is rotated at the same angle by the angle of rotation of the first reflecting mirror so that sunlight reflected from the first reflecting mirror can be more smoothly reflected by the solar cell module .

According to the present invention as described above, there is an advantage in that power generation efficiency can be improved by eliminating a shadow area even at sunrise or at sunset, through a first reflection mirror and a second reflection mirror installed apart from the side of the solar module Further, it is possible to collect the sunlight while tracking the position of the sunlight through the illuminance sensor, or to set the altitude of the sun according to the sunrise and sunset time of the area, and change the angle of the first reflection mirror according to the predetermined time So that the condensing efficiency of the sunlight is increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a photovoltaic apparatus according to an embodiment of the present invention; FIG.
Figures 3 to 4 illustrate exemplary views of a first reflective mirror with a solar tracking device according to one embodiment of the present invention.
FIGS. 5-6 illustrate exemplary views of a first reflective mirror provided with a solar tracker according to another embodiment of the present invention. FIG.
Figures 7 to 8 illustrate an example of a second reflective mirror according to an embodiment of the present invention.

Hereinafter, exemplary embodiments will be described based on embodiments best suited to an understanding of the technical features of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, And that the present invention may be implemented with other embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate understanding of the embodiments to be described below, in the reference numerals shown in the accompanying drawings, among the components that perform the same function in the embodiments, the related components are denoted by the same or an extension line number.

In order to facilitate understanding of the features of the present invention as described above, a photovoltaic power generation system in which a shadow area related to an embodiment of the present invention is solved will be described in more detail.

The solar module 10 has a square or rectangular plate shape and is installed on a roof, a roof, or a high place of the building to condense sunlight. In order to increase the light collecting efficiency according to the altitude and the moving direction of the sun, As shown in Fig.

The solar module 10 can smoothly absorb solar light throughout the module before and after the highest altitude of the sun. However, at sunrise or sunset, the solar module 10 may be blocked by sunlight on buildings or hills, The sunlight can not be absorbed smoothly.

In order to solve the above problems, the present invention is characterized in that the solar module 10 is installed so as to observe the south side in order to maximize the efficiency of condensing sunlight, and the first reflection mirror 20 is installed on both sides of the solar module, The first reflection mirror is installed so as to face east, and the other reflection mirror is installed to face the west.

In addition, two second reflection mirrors 30 for reflecting the sunlight reflected from the first reflection mirror 20 to the solar module are installed on the upper side of the first reflection mirror so as to face the first reflection mirror, respectively do.

At this time, a second reflection mirror 31, which is a pair with the first reflection mirror 21 installed toward the east, is installed toward the west and is installed toward the solar module 10, A second reflecting mirror 32, which forms a pair with the mirror 22, is installed toward the east and is directed toward the solar module.

The first reflecting mirror (20) is installed in an upper diagonal direction at a predetermined angle from the ground so as to reflect sunlight of a sun floating at a low altitude at sunrise or sunset, and the second reflecting mirror (30) The reflection mirror may be installed toward the solar module so as to reflect sunlight reflected from the first reflection mirror to the solar module, and may be inclined downward at a predetermined angle depending on the height of the solar module or the situation of the solar module.

Since the altitude of the sun is low at sunrise and sunset, the photometric light is incident for a certain period of time and a shadow area where sunlight can not be supplied smoothly is formed. Therefore, according to the present invention, And installed a second reflecting mirror so as to correspond to each of the first reflecting mirrors to ensure solar radiation by continuously supplying sunlight to the solar module even at low altitudes of the sun including sunrise and sunset.

Meanwhile, the first reflecting mirror 20 uses a concave mirror to smoothly condense the sunlight, and the second reflecting mirror 30 convexly reflects the condensed sunlight to a wide range. And the first reflection mirror and the second reflection mirror are formed in a rectangular shape having a longer lateral side length so as to facilitate condensation and diffusion of sunlight.

The use of the first reflecting mirror 20 as a concave mirror facilitates condensing sunlight incident from various directions and allows sunlight to be reflected smoothly regardless of the incident angle.

In addition, the use of the second reflecting mirror 30 as a convex mirror can be diffused and reflected to a wide module with a small area mirror, so that any incident light can be effectively diffused and reflected to be transmitted to the solar module.

The radius of curvature of the first reflecting mirror 20 is larger than the radius of curvature of the second reflecting mirror 30, which collects all the incident angles in multiple directions and transmits the same to the second reflecting mirror 30 .

Conversely, the curvature radius of the second reflecting mirror is smaller than the curvature radius of the first reflecting mirror to increase the diffusion efficiency. In addition, the curvature radius of the second reflecting mirror is set at the upper portion of the first reflecting mirror so as not to block the sun .

FIGS. 1 and 2 are views for explaining a principle of eliminating a shaded area according to an embodiment of the present invention, wherein the photovoltaic device is viewed from above in the south direction.

The solar module 10 is installed so as to face the south direction in order to increase the efficiency of condensing sunlight and is provided with two first reflecting mirrors 21 and 22 and two second reflecting mirrors 21, Mirrors 31 and 32 are installed.

The first reflecting mirror 20 is composed of a first reflecting mirror 21 for sunrise and a first reflecting mirror 22 for sunset installed so as to face the east.

The second reflecting mirror (30) includes a second reflecting mirror (31) facing the first reflecting mirror (21) for sunrise and installed toward the solar module (10) And a second reflecting mirror 32 facing the first reflecting mirror 22 and facing the solar cell module 10.

When the sun rises from the east, sunlight is condensed through the first reflecting mirror for sunrise 21 and reflected by the second reflecting mirror 31 for sunrise, and the second reflecting mirror 31 for sunrise The reflected sunlight is diffused and reflected by the solar cell module 10 to secure a solar radiation amount of the solar cell module.

Conversely, when the sun sets to the west, the sunlight is collected through the first reflecting mirror for sunset 22 and reflected to the second reflecting mirror 32 for sunset, and the second reflecting mirror 32 for sunset Reflects the reflected sunlight back to the solar module 10 while diffusing it.

In order to prevent the power generation efficiency from being lowered due to a shaded area necessarily occurring at the time of low-altitude sunset or sunrise, the present invention having the first and second reflection mirrors installed in the sunrise direction and the sunset direction Thereby improving the power generation efficiency by eliminating the shaded area at the time of sunrise or sunset.

Next, referring to FIGS. 3 to 4, a solar light tracking apparatus according to the present invention will be described.

The solar tracking system 40 according to an embodiment of the present invention includes a first support 41, a first drive motor 42, a first gear 43, a second gear 44, An illuminance sensor 45 and a first control unit 46. [

The first support base 41 is provided on the rear surface of the first reflection mirror 20 and is made of a metal material having high strength so as to stably support the first reflection mirror.

A first drive motor 42 is vertically installed in the first support 41 and a first gear 43 is coupled to a rotation shaft of the first drive motor.

The second gear 44 is coupled to the bottom surface of the bracket extending from the rear surface of the first reflecting mirror 20 by a predetermined length and is installed to engage with the first gear 43. The second gear 44 rotates the first reflecting mirror 20 via the first gear 43 when the first driving motor 42 rotates.

The number of teeth of the first gear 43 and the number of teeth of the second gear 44 may be different from each other (decelerator principle) so that more precise control can be performed when the solar module rotates.

The illuminance sensor 45 is installed on the front surface of the first reflection mirror 20 and senses the altitude change of the sun.

The first controller 46 rotates the first driving motor 42 according to the altitude of the sun sensed by the illuminance sensor 45 to change the angle of the first reflective mirror 20.

In general, the illuminance sensor allows the user to turn on or off the installed product or device according to the brightness of the light, and the illuminance sensor 45 according to the present invention is provided with the first driving motor 42 And the first controller 46 to compare the illuminance value measured by the illuminance sensor 45 with the illuminance value input to the first controller, and when there is a difference in the illuminance value, So that the light collection efficiency of the sunlight is not lowered.

On the other hand, the first reflecting mirror 21 for sunrise and the first reflecting mirror 22 for sunset can detect the sunlight before or after sunrise through the illuminance sensor 45 and the first control unit 46 If not, return to the east and west respectively.

According to the present invention as described above, the first reflection mirror and the second reflection mirror can keep track of the position even when the altitude of the sun is changed through the illuminance sensor, without deteriorating the condensing efficiency of the sunlight.

Next, referring to FIGS. 5 to 6, a solar light tracking apparatus according to another embodiment of the present invention will be described.

The sunlight position tracking device 50 according to another embodiment of the present invention mainly includes a second support 51, a second drive motor 52, a third gear 53, a fourth gear 54, And a second control unit 55.

The second support base 51 is provided on the rear surface of the first reflection mirror 20 and is made of a metal material having excellent strength so as to stably support the first reflection mirror.

A second drive motor 52 is vertically installed in the second support base 51 and a third gear 53 is coupled to a rotation shaft of the second drive motor.

The fourth gear 54 is coupled to the bottom surface of the bracket extending from the rear surface of the first reflecting mirror 20 by a predetermined length and is installed to engage with the third gear 53. When the second driving motor 52 rotates, the fourth gear 54 is rotated through the third gear 53 to rotate the first reflecting mirror 20.

The number of teeth of the third gear 53 and the fourth gear 54 may be different from each other (decelerator principle) so that more precise control can be performed when the solar module is rotated.

A rotation value for rotating the first reflecting mirror 20 is stored in the second control unit 55 according to a time set by the user in advance and is electrically connected to the second driving motor 54, The first reflecting mirror 20 can be rotated to continuously collect sunlight.

For example, the altitude of the sun along with the season, such as spring, summer, autumn, and winter, and thus the position of the first reflective mirror, can be entered and may be entered monthly, such as January through December, Likewise, the altitude of the sun along with time and thus the position of the first reflecting mirror can be input. When the solar power generation apparatus is installed in the area "A ", since the altitude of the sun in the area is numerically expressed by the season, month and time, when such data is input to the second control unit, Can adjust the angle of the first reflecting mirror.

Even if the second reflecting mirror 30 is fixed on the ground, it is not difficult to focus sunlight reflected from the first reflecting mirror 20, 2 reflection mirror are rotated at the same angle so that the reflected sunlight can be more smoothly reflected by the solar module 10. [

Referring to FIGS. 7 to 8, a third support 61 is installed on the rear surface of the second reflecting mirror 30, and a third drive motor (not shown) A fifth gear 63 is coupled to the rotating shaft of the third driving motor 62 and a second gear 63 is engaged with the fifth gear 63 on the rear surface of the second reflecting mirror 30, The sixth gear 64 is engaged.

The third control unit 65 is electrically connected to the first control unit 46 or the second control unit 55. The third control unit 65 is electrically connected to the third drive motor 62, .

If the first control unit 46 rotates the first driving motor (or the second driving motor) according to a change in illuminance value detected by the illuminance sensor or a change in time, The third control unit 65 rotates the third driving motor 62 to rotate the second mirror for sunrise 31 in the same direction as the first mirror for sunrise 1 Deg.

According to the present invention as described above, the sunlight is condensed while tracking the position of the sunlight through the illuminance sensor, or the altitude of the sun according to the sunrise and sunset time of the corresponding area is set in advance and the first reflection mirror There is an advantage that the condensing efficiency of sunlight can be increased by allowing the second reflecting mirror to rotate by the same amount as the first reflecting mirror is rotated.

10: solar module 20: first reflecting mirror
21: first reflecting mirror for sunrise 22: first reflecting mirror for sunset
30: second reflecting mirror 31: second reflecting mirror for sunrise
32: Second reflective mirror for sunset
40: Solar tracking device 41: First support
42: first drive motor 43: first gear
44: second gear 45: illuminance sensor
46:
50: sunlight locator 51: second support
52: second drive motor 53: third gear
54: fourth gear 55: second control section
61: third support frame 62: third drive motor
63: fifth gear 64: sixth gear
65:

Claims (5)

1. A solar photovoltaic device comprising a solar module for collecting sunlight,
The solar module is installed so as to be spaced from both sides of the solar module and is directed to the sunrise direction and the sunset direction of the sun. The solar module is formed as a concave mirror so as to condense and reflect incident sunlight. A first reflecting mirror provided with a sunlight position tracking device for efficiently collecting sunlight;
And a second reflection mirror installed to be opposed to the first reflection mirror and being formed of a convex mirror so as to diffuse and reflect the sunlight reflected and reflected by the first reflection mirror to the solar module, ,
The method according to any one of the preceding claims, further comprising transmitting the sunlight condensed through the first reflective mirror to the solar module via the second reflective mirror, wherein the angle of the first reflective mirror is changed to correspond to the altitude change of the sun, Wherein the shaded area formed in the optical module is eliminated.
The apparatus according to claim 1,
A first support provided on a rear surface of the first reflecting mirror and vertically installed on the ground;
A first driving motor installed inside the first support;
A first gear coupled to a rotating shaft of the first driving motor;
A second gear coupled to a rear surface of the first reflecting mirror and installed to be engaged with the first gear;
An illuminance sensor installed on a front surface of the first reflecting mirror for detecting an altitude change of the sun;
A first control unit interlocked with the illuminance sensor and the first driving motor, for rotating the first reflecting mirror by rotating the first driving motor to correspond to the altitude of the sun sensed by the illuminance sensor;
Wherein the shade area is eliminated.
2. The apparatus according to claim 1,
A second support provided on a rear surface of the first reflecting mirror and vertically installed on the ground;
A second drive motor installed inside the second support;
A third gear coupled to a rotational axis of the second driving motor;
A fourth gear coupled to a rear surface of the first reflecting mirror and installed to be engaged with the third gear;
The second driving motor is electrically connected to the second driving motor and stores the rotation time of the first reflecting mirror corresponding to the time preset by the user and the corresponding time, A second controller for rotating the reflection mirror;
Wherein the shade area is eliminated.
3. The method of claim 2,
A third support provided on a rear surface of the second reflecting mirror and vertically installed on the ground;
A third driving motor installed vertically inside the third support;
A fifth gear coupled to a rotation axis of the third drive motor;
A sixth gear coupled to a rear surface of the second reflecting mirror and installed to be engaged with the fifth gear;
And a third controller which is electrically connected to the third driving motor and drives the third driving motor to rotate the second reflecting mirror by receiving the rotation value of the first reflecting mirror transmitted from the first controlling unit Lt; / RTI >
Wherein the first reflection mirror rotates the second reflection mirror at the same angle by a rotated angle so that the sunlight reflected from the first reflection mirror can be more smoothly reflected by the solar module. Photovoltaic devices eliminated.
The method of claim 3,
A third support provided on a rear surface of the second reflecting mirror and vertically installed on the ground;
A third driving motor installed vertically inside the third support;
A fifth gear coupled to a rotation axis of the third drive motor;
A sixth gear coupled to a rear surface of the second reflecting mirror and installed to be engaged with the fifth gear;
And a third controller which is electrically connected to the third driving motor and drives the third driving motor to rotate the second reflecting mirror by receiving the rotation value of the first reflecting mirror transmitted from the second controlling unit Lt; / RTI >
Wherein the first reflection mirror rotates the second reflection mirror at the same angle by a rotated angle so that the sunlight reflected from the first reflection mirror can be more smoothly reflected by the solar module. Photovoltaic devices eliminated.

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