KR20130059197A - Solar tracking device and method, and solar energy collecting device and management method thereof incorporating the solar tracking device and method - Google Patents

Abstract

PURPOSE: A solar tracking device and a solar tracking method, and a solar energy collecting device and a management method thereof are provided to accurately trace sunlight in real time by using a sunlight sensor and a light reflection member. CONSTITUTION: A light reflection member(110) reflects sunlight. A sunlight sensor(120) is installed on the path of the light coming from the light reflection member to a reflection target(300). The light condensed on the reflection target is reflected by a sunlight reflector(200). A separation area(122) is formed in the peripheral part of the sunlight sensor. A projection area(121) formed on the center part of the sunlight sensor. A tracking driving unit detects the current position of the sun according to the position of the incident sunlight.

Description

SORAC TRACKING DEVICE AND METHOD, AND SOLAR ENERGY COLLECTING DEVICE AND MANAGEMENT METHOD THEREOF INCORPORATING THE SOLAR TRACKING DEVICE AND METHOD}

The present invention relates to a solar tracking device and method, and to an energy collection device and an operating method using the same, and more particularly, to accurately configure the tracking device in real time by simply configuring a tracking device using only a sensor and a light reflecting member using a solar cell. A solar tracking device that can be tracked and the resulting posture correction values correct the attitude of the reflecting device in real time, allowing the reflector to accurately reflect sunlight to the target target for efficient energy collection. And a method and an energy collection device employing the same and a method of operating the same.

Full spectrum sunlight can be divided into generally accepted spectral regions through observation of the spectrum or spectrum of useful light striking the Earth's surface. Sunlight is separated and classified into very narrow bandwidths. The three most common spectral regions are:

First is the infrared (IR) spectrum, which is generally classified above 1.0 μm,

Second is the visible and near infrared (VIS-NIR) spectrum with wavelengths between 0.40 μm and 1.0 μm,

Third is the ultraviolet (UV) spectrum below the 0.4 μm wavelength.

The distinction of specific wavelengths defining UV, VIS / NIR, and IR is somewhat arbitrary and is merely illustrative. Moreover, the spectra in each of the three regions may be further divided or separated. Their secondary spectral segmentation can be adjusted to suit the most efficient and best available converter. Currently commercially available solar power systems have two general means of generating solar power. These two types of systems are called Concentrated Solar Power (CSP) collection using IR and Concentrated Photovoltaic (CPV) solar power collection using VIS-NIR. Each of these systems maximizes the collection of the solar spectrum by a single split while minimizing the effects of the other two spectra.

The first type is a CSP system, in which sunlight collects at the focal point where the IR (heat) portion of the spectral energy is captured by other means to generate power. Inside the CSP system, it is classified into three systems as follows.

1. CSP tower system

2. CSP Trough System

3. CSP parabolic reflector / heat engine system.

In the CSP tower system, a large directional adjustable sun reflector called "heliostats" usually aims at a single high point on the tower. The focal point has means for receiving heat collected from the IR light and transferring this collection heat to a medium that can be used to generate steam in a Rankine cycle. Molten salt is usually used to transfer the collected energy, and the heated salt heats the steam inside the heat exchanger, and the heated steam is transferred to a conventional steam turbine system to generate electricity. Let's do it. These systems typically correspond to large systems.

In a trough CSP system, elongated cylindrical parabolic reflectors collect the IR spectrum of sunlight and direct the IR light onto a heat receiver consisting of a thin pipe filled with heat transfer medium such as oil or molten salt. Focus. As in the CSP tower system, the heated transfer fluid is pumped into the heat exchanger and then used to generate steam through a Rankine cycle.

In the CSP parabolic reflector / heat engine system, large parabolic reflectors focus IR light at a single focal point where a heat engine can be placed to collect heat and then convert it into electricity through a generator. .

In order to drive such a CSP system, a solar tracking sensor that can accurately track the position of the ever-changing sun is essential.

The solar tracking sensor used in the prior art is a condensing system application sensor that considers only the incidence angle to sunlight and the form designed to be utilized in solar cells.

However, the solar tracking sensor for this CSP system needs to consider both the position of the solar reflector as well as the angle of incidence and the angle of reflection, and the position of the end target, so that a lot of error correction and additional equipment are needed to apply the general solar tracking sensor. There are many difficulties in application.

In other words, the conventional solar tracking sensor is not suitable for driving the CSP system, and most of the methods have the form of calculating the state of movement of the sun by decoding the shadow generated by the shadow plate and the light sensor. Therefore, there was an inconvenience in interpreting a wrong signal by easily reacting to a light emitting body such as refraction or a flash. In addition, in the case of using a shadow plate and an optical sensor, most of them are designed to be attached to and operate on the reflector plate, and are applied only to the energy collector of the radar type or the energy collector through the lens.

Therefore, in the form of large-scale reflector installed using vast plains and terrain, a new type of sensor is required, and a special control system is required.

On the other hand, such a CSP system is generally used as a utility scale system that is not found in small devices that can be installed in many homes. There are many reasons for this, especially with solar tracking sensors, which require large installation sites and high costs, and the systems connected to them are complex, large, and expensive to operate. Therefore, in recent years, a small energy collection device that can be installed at home is urgently required.

The present invention has been made to solve the above problems, the object of the solar tracking device that can accurately track the sunlight in real time by simply configuring a tracking device using only the sensor and the light reflection member using a solar cell and To provide a way.

In addition, the energy collection device that enables efficient energy collection by allowing the reflecting device to accurately reflect the sunlight to the target target by correcting the attitude of the reflecting device in real time through the posture correction value provided through the solar collection device; To provide a method of operation.

In particular, the solar tracking device and the energy collection device of the present invention can be miniaturized and low-cost installation to be installed in a public home as well as a public power scale system.

According to one aspect of the invention, the light reflecting member for reflecting the sunlight; A solar sensor comprising at least two solar cells and receiving light reflected from the light reflecting member; And detecting driving of electric energy for each solar cell of the solar sensor, recognizing a change in the position of the sun according to the incident position of light, and correcting a posture of the light reflecting member according to the recognized position of the sun. Way; It provides a solar tracking device comprising a.

Preferably, the photovoltaic sensor, the mapping region is located in the central region consisting of a solar cell; And a departure region including at least one solar cell disposed around the finishing region. And the tracking driving means detects the change in the position of the sun by detecting the generation of electrical energy of the solar cell in the departure area when the light reflected from the light reflection member and incident to the solar sensor reaches the departure area. It features.

Preferably, the tracking driving means, the sensing unit for detecting the generation of electrical energy of each solar cell in the mapping region and the departure region of the solar sensor; A posture determination and control unit for determining whether the position of the sun changes according to the detection result of the detection unit and calculating a posture correction value required for the light reflection member; A vertical rotation driver and a horizontal rotation driver to correct the attitude of the light reflection member according to the attitude determination and the control by the attitude correction value of the controller; Characterized in that it comprises a.

On the other hand, according to another aspect of the invention, (a) reflecting the sunlight from the light reflecting member and incident to the solar sensor consisting of at least two solar cells; (b) detecting a change in position of the sun according to the incident position of light by detecting whether or not electric energy is generated for each solar cell of the solar sensor; And (c) correcting the attitude of the light reflecting member in accordance with the recognized change in position of the sun. It provides a solar tracking method comprising a.

Preferably, the photovoltaic sensor is located in a central region and includes a mapping region consisting of a solar cell and a departure region composed of at least one solar cell disposed around the mapping region, and the step (b) When the light reflected by the light reflecting member and incident to the solar sensor reaches the departure region, the position change of the sun is detected by detecting the generation of electrical energy of the solar cell in the departure region.

Preferably, the step (c) calculates a posture correction value required for the light reflection member according to the detected position change of the sun, and corrects the posture of the light reflection member by rotating it vertically or horizontally according to the posture correction value. It is characterized by.

On the other hand, according to another aspect of the invention, the solar tracking device according to any one of the above-described features; At least one solar reflector reflecting sunlight by posture correction in conjunction with posture correction of the light reflection member through the tracking driving means of the solar tracking device; A reflection target for collecting light reflected from the solar reflector; It provides an energy collection device comprising a.

On the other hand, according to another aspect of the invention, the solar tracking method according to any one of the above-described features; And condensing the reflected light on the reflective target by correcting the attitude of the solar reflector in association with the posture correction of the light reflection member implemented through the solar tracking method. It provides a method of operating an energy collection device comprising a.

According to the present invention, it is possible to simply configure the tracking device using only the sensor and the light reflection member using the solar cell to accurately track the sunlight in real time.

In addition, by correcting the posture of the reflecting device in real time through the posture correction value provided through the solar collection device, the reflecting device accurately reflects sunlight to the target target, thereby enabling efficient energy collection.

In particular, the solar tracking device and the energy collection device of the present invention can be miniaturized and low-cost installation can be installed in a public home as well as a public power scale system.

1 is a view for explaining the principle of the solar tracking device according to the present invention.
2 is a view showing a solar tracking device according to the present invention.
3 is a view showing a solar sensor according to the present invention.
4 is a view for explaining a tracking drive means according to the present invention.
5 is a view for explaining an energy collection device according to an embodiment of the present invention.
6 is a view for explaining an energy collection device according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, an embodiment of the solar tracking device and method according to the present invention and the energy collection device and its operating method using the same will be described in more detail.

First, the operation principle of the solar tracking device according to the present invention will be described with reference to FIG. 1. 1 is a view for explaining the principle of the solar tracking device according to the present invention.

Referring to FIG. 1, a reflector that reflects light of the sun S and directs it to a target target point T is positioned with a reflecting position of the line segment Mm.

Here, when the sunlight is reflected by the reflector and directed toward the target point T, the incident angle? SCm and the reflection angle? TCM of the light generated during the reflection are equal in magnitude.

That is, ∠SCm = ∠TCM.

Here, when the angle at which light is incident and reflected, that is, the angle 각 SCT between incident and reflection, is θ, the repair line Aa lowered at the midpoint C of the line segment Mm of the reflector is bisected for each ∠SCT, so that ∠SCA = = TCA = θ / 2.

If the sun moves from S to S ₁ over time, it is assumed that the reflector has a reflecting position of line segment M ₁ m ₁ to reflect sunlight to the target point T.

In this case, if the line taken down from the midpoint C of the line segment M ₁ m ₁ of the reflector is A ₁ a ₁ , the line segment A ₁ a ₁ bisects the angle ∠S ₁ CT formed by the incidence and reflection, _{When 1} CS is θ ₁ , ∠ S ₁ CT = θ + θ ₁ , and ∠S ₁ CA ₁ = ∠ TC A ₁ = (θ + θ ₁ ) / 2.

Where the line segment Mm of the reflector moved to line segment M ₁ m ₁ ∠mCm ₁ Or ∠MCM ₁ is the angle at which repair Aa moves to repair A ₁ a ₁ ∠ACA ₁ Or ∠aCa ₁ .

Therefore, the size of each ∠ACA ₁ is expressed by the following equation.

∠ACA ₁ = ∠S ₁ CT-∠S ₁ CA ₁ -∠TCA

= (θ + θ ₁ )-(θ + θ ₁ ) / 2-θ / 2

= Θ _1/2

= ∠mCm ₁ = ∠MCM ₁

That is, when the light reflected by the reflector is directed to the collection destination, if the reflector is controlled at an angle of 1/2 of the angle of the sun movement regardless of the position of the reflector, the reflected light continues to be directed to the destination.

Therefore, the method of controlling the optimally reflected light in an energy collection device using a plurality of solar reflectors may be a method of controlling each reflector at the same angle.

A solar tracking device according to the present invention using the principle of FIG. 1 will now be described with reference to FIG. 2.

2 is a view showing a solar tracking device according to the present invention.

Referring to FIG. 2, the solar tracking device according to the present invention includes a light reflection member 110 for reflecting sunlight and a solar sensor 120 to which light reflected from the light reflection member 110 is incident. And tracking driving means 140 for changing the posture of the light reflection member 110 and detecting the current position of the sun according to the incident position of the light incident on the solar sensor 120.

Here, the light reflection member 110 may be initially set so that the reflected light is directed toward the reflection target T. Then, when the position change of the sun occurs, the light reflection member 110 may detect the position change. Since the posture correction is performed in real time according to the control, the reflected light may be incident on the reflective target T through continuous posture correction despite the change in the position of the sun.

The reflective target T set as a destination of light reflected from the light reflecting member 110 may be a steam generating means of the CSP tower system, a heat absorber of the trough CSP system, and a CSP parabolic reflector / It may be a heat engine of a heat engine system. That is, the reflective target T may be applied as a light collecting means to any device that can collect energy by using the collected sunlight, and in particular, a light collecting means used in a small system of home as well as a light collecting means in a large system facility. It may be a means.

The light focused on the reflective target T is reflected by the solar reflector 200, and the solar reflector 200 will be described in more detail in the following description regarding the energy collection device.

Therefore, the light reflecting member 110 and the solar reflector 200 which are installed at different positions will be initially set to reflect the incident light to be incident to the reflective target T.

The light reflection member 110 may be made of a material capable of reflecting sunlight, for example, may have a mirror shape on the surface, and may have a concave mirror shape as another example. Since the light reflecting member 110 has to reflect the incident light into the reflected light having a narrow light area and enter the solar sensor 120, it is preferable that the light reflecting member 110 has a very small size when the mirror has a planar shape. In the case of having a shape, it is preferable that the curvature of the reflective surface is adjusted to have a structure that reflects light with a narrow optical area.

In this case, the light reflection member 110 may be incident on the reflective target T that targets sunlight continuously by changing the attitude of the sun by the tracking driving means 140.

Meanwhile, the solar sensor 120 may be installed on a path of light reflected from the light reflecting member 110 and incident on the reflective target T, and has a planar structure in which a plurality of solar cells are vertically and horizontally disposed. It can be made as.

Here, the solar cells constituting the photovoltaic sensor 120 are semiconductor devices that directly convert energy from solar radiation into electrical energy. Preferably, a small solar cell is used.

3 illustrates a solar cell arrangement structure of the solar sensor 120.

Referring to FIG. 3, the solar sensor 120 has a mapping region 121 formed of solar cells at a central portion thereof, and the leaving region 122 composed of a plurality of solar cells around the mapping region 121. Is configured to have

The mapping region 121 may be formed of a single solar cell or may be formed of two or more solar cells. In order to increase the operation accuracy of the solar tracking device, it is preferable that this mapping area 121 be minimized.

The departure region 122 may be formed of a solar cell installed in four directions of left, right, top, and bottom with the finishing region 121 at the center. In order to increase the operation reliability of the solar tracking device, the departure area 122 is composed of solar cells that are responsible for eight or more directions including diagonal directions as well as four directions about the mapping area 121. It is desirable to expand.

The solar sensor 120 according to the initial setting, the sunlight reflected from the light reflecting member 110 reaches the mapping region 121, the position of the sun occurs due to the natural phenomenon, the light reflecting member ( The light reflected from the 110 reaches a position (ie, the departure area 122) that is out of the corresponding mapping area 121.

At this time, since both of the finishing region 121 and the departure region 122 generate electric energy (voltage) according to whether or not sunlight is irradiated, the light reflected from the light reflecting member 110 reaches the finishing region 121. In this case, electric energy is generated in the corresponding mapping area 121, and thus, the light reflected from the light reflection member 110 is irradiated at a target angle. Of course, the target angle herein refers to an angle at which light reflected from the light reflection member 110 can be focused onto the reflective target 300.

Afterwards, when a change in the position of the sun occurs due to a natural phenomenon, the light reflected from the light reflecting member 110 may not reach the finishing region 121 but may reach the departure region 122. At this time, when the light reflected from the light reflecting member 110 reaches the departure region 122, the electric energy is generated in the departure region 122, whereby the light reflected from the light reflecting member 110 is the target. It turns out that it is irradiated at an angle which does not. Of course, the non-target angle means an angle at which the light reflected from the light reflection member 110 cannot be focused on the reflective target 300.

As described above, the tracking driving means 140 may determine whether the light reflected by the light reflection member 110 reaches the finishing region 121 or the departure region 122 in the solar sensor 120. do. In addition, when the light reflected from the light reflection member 110 reaches the departure region 122, the posture correction of the light reflection member 110 is also performed by the tracking driving means 140.

As shown in FIG. 4, the tracking driving unit 140 detects whether electrical energy of each solar cell in the mapping region 121 and the detachment region 122 of the solar sensor 120 is generated. 141, a posture determination and control unit 142 that determines whether the position of the sun changes according to a detection result of the detection unit 141, and calculates a posture correction value required for the light reflection member 110, and the posture The vertical rotation driver 143 and the left and right rotation driver 144 for correcting the attitude of the light reflection member 110 according to the determination and the control by the attitude correction value of the controller 142, and the tracking driver 140. It is configured to include a power supply unit 145 for supplying power for driving.

First, the detector 141 is connected to each of the solar cells in the mapping area 121 and the departure area 122 of the solar sensor 120 to detect whether electrical energy is generated in the solar cell. . As described above, when the light incident from the light reflection member 110 reaches the solar cells, the solar cells generate electric energy only in the solar cell at the position where the incident light reaches.

The posture determination and control unit 142 is connected to the detection unit 141 receives information about the solar cell generated the electrical energy from the detection unit 141, and determines whether the position of the sun changes based on this information Then, the posture correction value required for the light reflection member 110 is calculated.

Looking at the attitude determination and the operation of the control unit 142 in detail, first, the attitude determination and control unit 142 receives the information that the electrical energy is generated from the solar cell in the event area 121, the movement of the sun In this case, it is determined that there is no state, in which case no additional control is performed. That is, if the position where the light incident from the light reflecting member 110 reaches is the mapping area 121, in this case, it is determined that the change of the position of the sun does not occur (more precisely, the sun has moved below the reference value). It is.

On the contrary, when the posture determination and the control unit 142 receives the information that the electrical energy is generated from the solar cell in the departure region 122, the state of the movement of the sun occurs (more precisely, the sun moves more than the reference value). Shown), and in this case, the posture correction value is calculated according to the position in the departure region 122 of the solar cell in which the electric energy is generated, and the posture correction value is converted into the vertical rotation drive unit 143 and the horizontal rotation drive unit ( 144 to control the posture correction with respect to the light reflection member 110.

Here, the posture correction value includes a vertical rotation correction value for rotating the light reflection member 110 in the vertical direction and a horizontal rotation correction value for rotating in the left and right directions.

For example, if electrical energy is generated from the solar cell immediately above the mapping area 121 of the departure area 122 of the solar sensor 120, the attitude determination and the controller 142 may generate the movement of the sun. The attitude correction is controlled by determining the state and including the lower rotation command as the vertical rotation correction value. Of course, in this case, the left and right rotation correction values are not generated.

As another example, if electrical energy is generated in the solar cell immediately to the left of the mapping area 121 of the departure area 122 of the solar sensor 120, the attitude determination and control unit 142 generates the movement of the sun. The posture correction is controlled by determining the state and including the right rotation command as the left / right rotation correction value. Of course, in this case, the vertical rotation correction value is not generated.

The above examples are merely examples for explaining the principle, and the up and down rotation and the left and right rotation may occur at the same time, of course.

Herein, the rotation angle of vertical rotation or horizontal rotation is made in proportion to the distance between the sensed solar cell and the mapping area 121.

The vertical rotation driving unit 143 and the horizontal rotation driving unit 144 may include a motor generating a rotational force according to the attitude determination and the attitude correction value of the control unit 142 and a plurality of gear units, and the vertical rotational direction of the corresponding motor. Alternatively, the gearbox may be configured to generate left and right rotational force, and the gearbox may be connected to the light reflection member 110 to transmit the up and down or left and right rotational force to the light reflection member 110 to correct the posture of the light reflection member 110. Will be done.

Referring to the solar tracking method of the solar tracking device having such a configuration as follows.

First, as the initial setting, the light reflected by the light reflection member 110 is set to face the reflection target 300 and the solar sensor 120 is positioned in the light path. Preferably, the solar sensor 120 is installed such that the reflected light reaches the mapping region 121 of the solar sensor 120.

Thereafter, the tracking driving unit 140 determines whether electrical energy is generated in the solar cells in the mapping region 121 and the detachment region 122 of the solar sensor 120 through the voltage sensing unit 141. Will be monitored.

And when electrical energy is generated in one of the solar cells in the departure region 122 of the solar sensor 120, the attitude determination and control unit 142 of the tracking drive means 140 is the solar energy generated The attitude correction value including the left / right rotation correction value or the up / down rotation correction value is generated with reference to the position of the battery.

The posture correction value generated as described above is transmitted to the vertical rotation driver 143 or the horizontal rotation driver 144, and the vertical rotation driver 143 or the horizontal rotation driver 144 rotates the light reflection member 110 vertically or horizontally. By rotating the light reflecting member 110 according to the departure value by rotating, the posture correction of the light reflecting member 110 is performed according to the current position of the sun. As a result, the light reflecting member 110 is located at the position of the sun. Irrespective of the change, it is possible to continuously reflect the sunlight toward the reflective target 300.

On the other hand, such a solar tracking device can be applied to the energy collection device.

Energy collection device according to an embodiment of the present invention is a form directly coupled to the solar tracking device, the solar reflector 200 for focusing the sunlight to the reflective target 300 is a light reflecting member ( 110 is configured to work in conjunction with it can be made in the interlocking type that can be produced as a small household equipment (see Figure 5).

5 is a view for explaining an energy collection device according to an embodiment of the present invention.

Referring to FIG. 5, the energy collection device according to an embodiment of the present invention includes a solar tracking device, a vertical rotation drive unit 143, and a horizontal rotation drive unit configured to correct the attitude of the light reflection member 110 of the solar tracking device. The solar reflector 200 having the same movement as that of the light reflecting member 110 by sharing the 144 and the light reflecting the incident light reflected from the solar reflector 200 to collect energy It is configured to include a target 300.

Here, the solar tracking device includes the above-described light reflecting member 110, the solar sensor 120, and the tracking driving means 140.

The reflective target 300 is a light collecting means capable of collecting energy using the collected sunlight, and is set as a destination of light reflected from the solar reflector 200. The reflective target 300 may be in various forms such as a steam generating means, a heat absorber, a heat engine, and the like, as long as it can collect energy by using condensed sunlight.

That is, the solar reflector 200 is installed on the vertical rotation driver 143 and the horizontal rotation driver 144 to reflect light to the reflective target 300, and the light reflection member 110 is also a reflective target 300. As a result, the solar reflector 200 and the light reflection member 110 are installed in the same vertical rotation driver 143 and the horizontal rotation driver 143 and the horizontal rotation driver 144 to reflect the light. The driving unit 144 is to be shared.

Here, FIG. 5 shows an example in which a separate reflective target (not shown) is installed for the light reflecting member 110. In this case, the sun may be adjusted by adjusting an initial setting of the posture of the light reflecting member 110. FIG. The same posture correction according to the movement of the solar reflector 200 and the light reflection member 110 may be applied together.

Referring to the operation method of the energy collection device having such a configuration as follows.

First, as the initial setting, the light reflected by the light reflection member 110 is set to face the reflection target 300 and the solar sensor 120 is positioned in the light path. In addition, the light reflected from the solar reflector 200 is also set to face the reflective target (300).

Here, the solar reflector 200 and the light reflection member 110 are installed together in the same vertical rotation driver 143 and the horizontal rotation driver 144 so that vertical rotation and horizontal rotation are performed in the same manner.

Thereafter, the tracking driving unit 140 determines whether electrical energy is generated in the solar cells in the mapping region 121 and the detachment region 122 of the solar sensor 120 through the voltage sensing unit 141. Will be monitored.

And when electrical energy is generated in one of the solar cells in the departure region 122 of the solar sensor 120, the attitude determination and control unit 142 of the tracking drive means 140 is the solar energy generated The attitude correction value including the left / right rotation correction value or the up / down rotation correction value is generated with reference to the position of the battery.

The posture correction value generated as described above is transmitted to the vertical rotation driver 143 or the horizontal rotation driver 144, and the vertical rotation driver 143 or the horizontal rotation driver 144 rotates the light reflection member 110 vertically or horizontally. By correcting the attitude of the light reflection member 110 and the solar reflector 200 according to the departure value by rotating, the attitude correction of the light reflection member 110 and the solar reflector 200 is performed according to the current position of the sun. As a result, the light reflecting member 110 and the solar reflector 200 can continuously reflect the sunlight toward the reflective target 300 regardless of the position change of the sun.

In addition, the energy collection device according to another embodiment of the present invention is independent of the solar tracking device, the solar reflector 200 that focuses the sunlight to the reflective target 300 is the light reflecting member 110 of the solar tracking device It can be made stand-alone that can be manufactured as a large system equipment by being configured independently (see Figure 6).

6 is a view for explaining an energy collection device according to another embodiment of the present invention.

Referring to FIG. 6, the energy collection device according to another embodiment of the present invention receives a solar tracking device and a posture correction value from the attitude determination and control unit 142 of the solar tracking device, and then rotates its own vertical rotation drive unit 243. And a solar reflector 200 configured to perform posture control through the left and right rotation driving unit 244, and a reflection target 300 capable of collecting energy by collecting light reflected from the solar reflector 200. It is configured to include.

Here, the solar tracking device includes the above-described light reflecting member 110, the solar sensor 120, and the tracking driving means 140.

The reflective target 300 is a light collecting means capable of collecting energy using the collected sunlight, and is set as a destination of light reflected from the solar reflector 200. The reflective target 300 may be in various forms such as a steam generating means, a heat absorber, a heat engine, and the like, as long as it can collect energy by using condensed sunlight.

That is, the solar reflector 200 is installed in a separate vertical rotation driver 243 and the left and right rotation driver 244 to reflect light to the reflective target 300, the light reflecting member 110 is also a reflection target ( The light reflector 200 and the light reflecting member 110 are installed in the vertical rotation driving unit 143 and the horizontal rotation driving unit 144 to reflect light to the light. Will have.

Here, FIG. 6 shows an example in which a separate reflective target (not shown) is installed for the light reflecting member 110. In this case, the sun may be adjusted by adjusting an initial setting of the posture of the light reflecting member 110. FIG. The same posture correction according to the movement of the solar reflector 200 and the light reflection member 110 may be applied together.

At this time, the solar tracking device including the solar sensor 120, the tracking driving means 140 and the light reflecting member 110 described above is accurate sun position tracking without being affected by the external environment such as rain, snow, wind, etc. It may be to be embedded in a separate transparent protective member 150 to enable this.

Referring to the operation method of the energy collection device having such a configuration as follows.

First, as the initial setting, the light reflected by the light reflection member 110 is set to face the reflection target 300 and the solar sensor 120 is positioned in the light path. In addition, the light reflected from the solar reflector 200 is also set to face the reflective target (300).

Herein, the solar reflector 200 and the light reflection member 110 are installed in different vertical rotation driving units and left and right rotation driving units so that vertical rotation and left and right rotations are performed separately.

Thereafter, the tracking driving unit 140 determines whether electrical energy is generated in the solar cells in the mapping region 121 and the detachment region 122 of the solar sensor 120 through the voltage sensing unit 141. Will be monitored.

And when electrical energy is generated in one of the solar cells in the departure region 122 of the solar sensor 120, the attitude determination and control unit 142 of the tracking drive means 140 is the solar energy generated The attitude correction value including the left / right rotation correction value or the up / down rotation correction value is generated with reference to the position of the battery.

The posture correction value generated as described above is transmitted to the vertical rotation driver 143 or the horizontal rotation driver 144, and the vertical rotation driver 143 or the horizontal rotation driver 144 rotates the light reflection member 110 vertically or horizontally. By rotating, the attitude correction of the light reflection member 110 according to the departure value is performed. At the same time, the vertical rotation driver 243 and the horizontal rotation driver 244 that share the attitude correction value generated by the attitude determination and the controller 142 also perform the same attitude correction with respect to the solar reflector 200. As a result, the light reflecting member 110 and the solar reflector 200 can continuously reflect the sunlight toward the reflective target 300 regardless of the position change of the sun.

Here, the energy collection device according to another embodiment of the present invention is suitable for a large system installation in which a large number of solar reflectors 200 are installed in a large unit area, in which case a plurality of solar reflectors 200 are rotated in the same vertical direction. The driving unit 243 and the left and right rotation driving unit 244 may be shared, or the plurality of solar reflectors 200 may have separate vertical rotation driving units 243 and left and right rotation driving units 244, respectively. Of course, even in this case, the vertical rotation driver 243 and the horizontal rotation driver 244 share the posture correction value transmitted from the solar tracking device to perform posture correction according to the change in the position of the sun.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: solar tracking device 110: light reflection member
120: solar sensor 121: the dead zone
122: departure area 140: tracking drive means
141: detection unit 142: attitude determination and control unit
143: vertical rotation drive unit 144: left and right rotation drive unit
145: power supply 150: protective member
200: solar reflector 300: reflective target

Claims (8)

A light reflecting member for reflecting sunlight;
A solar sensor comprising at least two solar cells and receiving light reflected from the light reflecting member; And
Tracking drive means for detecting the occurrence of electrical energy for each solar cell of the solar sensor to recognize the change in the position of the sun according to the incident position of light and to correct the attitude of the light reflecting member in accordance with the recognized position change of the sun ; Photovoltaic tracking device comprising a.
The method of claim 1,
The solar sensor,
A mapping region located at the center of the solar cell; And
A departure region including at least one solar cell disposed around the finishing region; / RTI >
The tracking driving means detects the change in the position of the sun by detecting the generation of electrical energy of the solar cell in the departure area when the light reflected by the light reflecting member and incident to the solar sensor reaches the departure area. Optical tracking device.
The method of claim 2,
The tracking drive means,
A detector configured to detect whether electrical energy is generated in each solar cell in a mapping area and a departure area of the solar sensor;
A posture determination and control unit for determining whether the position of the sun changes according to the detection result of the detection unit and calculating a posture correction value required for the light reflection member;
A vertical rotation driver and a horizontal rotation driver to correct the attitude of the light reflection member according to the attitude determination and the control by the attitude correction value of the controller; Photovoltaic tracking device comprising a.
(a) reflecting the sunlight from the light reflection member and incident it into the solar sensor composed of at least two solar cells;
(b) detecting a change in position of the sun according to the incident position of light by detecting whether or not electric energy is generated for each solar cell of the solar sensor; And
(c) correcting the attitude of the light reflecting member in accordance with the recognized change in position of the sun; Photovoltaic tracking method comprising a.
5. The method of claim 4,
The photovoltaic sensor is located at a central portion and includes a mapping region consisting of a solar cell and a departure region composed of at least one solar cell disposed around the mapping region.
In the step (b), when the light reflected from the light reflecting member and incident to the photovoltaic sensor reaches the departure region, the position change of the sun is detected by detecting the generation of electrical energy of the solar cell in the departure region. Solar tracking method.
6. The method of claim 5,
In the step (c), a posture correction value necessary for the light reflection member is calculated according to the detected position change of the sun, and the posture of the light reflection member is rotated up and down or left and right according to the posture correction value. Solar tracking method.
The solar tracking device of any one of claims 1 to 3;
At least one solar reflector reflecting sunlight by posture correction in conjunction with posture correction of the light reflection member through the tracking driving means of the solar tracking device; And
A reflection target for collecting light reflected from the solar reflector; Energy collection device comprising a.
The solar tracking method according to any one of claims 4 to 6; And
Condensing the reflected light onto a reflective target by correcting the attitude of the solar reflector in association with the posture correction of the light reflection member performed through the solar tracking method; Operating method of the energy collection device comprising a.

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