JP2014103381A - Photovoltaic power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation device capable of obtaining a sufficient light condensation rate by using a reflection sheet.SOLUTION: In a photovoltaic power generation device in which solar cells having substantially rectangular light reception surfaces inclined upward to the south are arranged in two or more arrays in the south-north direction, a first reflection sheet between north end sides of the solar cells and an installation ground surface therebelow, and a second reflection sheet between south end sides of the solar cells and an installation ground surface therebelow are spread, and insulation surface light reflection constitution is provided on an inter-array installation surface between a ground line of the first reflection sheet and a ground line of the second reflection sheet. Alternatively, a reflection sheet is stuck on a curved reflection surface provided between a south end side of one solar cell panel array and a north end side of a south adjacent solar cell panel array. Here, the light condensation rate can be enhanced more by spreading a fourth reflection sheet above a north end side of the photovoltaic power generation device in the northernmost array and a fifth reflection sheet between adjacent arrays of solar cells at an east end or west end.

Description

  The present invention relates to a solar power generation device.

In a solar power generation device, in order to increase the amount of light irradiated to the light receiving surface of a solar cell (light receiving amount), a technique is known in which a reflecting mirror is provided at a location other than the light receiving surface to direct light toward the light receiving surface. Yes. For example, Patent Document 1 discloses a solar power generation device that uses a condensing device including a large number of reflecting mirrors. Further, Patent Document 2 discloses a solar power generation device in which a planar reflecting mirror is provided between light receiving surfaces.
However, these methods have a problem that the construction cost of the plant is increased because it is necessary to strengthen a frame on which a heavy reflector is installed.

As a solution to the above problem, it has been proposed to use a light reflecting sheet (reflective sheet) instead of a heavy glass mirror. For example, Patent Document 3 discloses a resinous reflection sheet, and Patent Document 4 discloses a mirror sheet. In particular, Patent Document 4 describes that a mirror sheet is used in a solar power generation device.
However, the sheet has a problem of being broken by the wind after installation, and it has been difficult to provide the reflection sheet at the place where the reflecting mirror is installed in Patent Document 1 and Patent Document 2. For this reason, the light collection rate by reflecting the light cannot be sufficiently obtained.

  As described above, a method for obtaining a sufficient light collection rate using a reflective sheet has not been disclosed.

JP 2012-038954 A JP 2011-176251 A JP 2005-059382 A JP 2012-181301 A

  The problem to be solved is to provide a solar power generation device that obtains a sufficient light collection rate using a reflective sheet.

The photovoltaic power generator of the present invention is
In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
A reflective sheet is pasted on a curved reflective surface provided between the south end side of one solar cell panel row and the north end side of the solar cell row adjacent to the south,
The reflective surfaces are the same height in a direction parallel to the south end side,
With respect to a cross-sectional shape obtained by cutting the reflecting surface in a cross section perpendicular to the south end surface, the elevation angle from the horizontal line to the south side of the tangent line of the cross-sectional shape is monotonously non-decreasing with respect to the distance of the south end surface.

である。
なお、本明細書においては、太陽光発電装置が北半球に設置され太陽光が南側から照射される前提として、「南」及び「北」の語を用いる。太陽光発電装置が南半球に設置される場合には「南」と「北」とを逆にすれば同等のものとなる。
図２は、光の経路を示す図である。この図も、太陽光発電装置を東側から見た図である。反射面の接線の方向が変化し、反射面９で反射した入射光は、受光面６の各所に投光される。図には、受光面６の最上端及び最下端に投光される光を示す。図に示す２つの実線矢印の間の入射光は、受光面６の全体にほぼ一様に投光される。太陽電池パネルの出力は投光量が最小の箇所の投光量に依存するので、ほぼ一様に投光されることで太陽電池パネルを有効に活用することができる。
太陽の位置が変化し、南向仰角が変化しても、反射面９の他の箇所によって、同様に受光面６の全体へのほぼ一様な投光が実現される。 FIG. 1 is a diagram illustrating a configuration of a solar power generation device. The figure is the figure which looked at the solar power generation device from the east side, and the left side of the figure is the south side. The light receiving surface 6 of the solar cell is inclined by an angle β upward on the south side. A reflecting surface 7 is provided between the south end side of one solar cell panel row (solar cell panel row having the light receiving surface 6 in the figure) and the north end side of the solar cell panel row adjacent to the south. Has a reflective sheet. The reflection sheet stretched on the reflection surface 9 is less likely to break due to wind.
The reflecting surface 9 has a uniform shape in the east-west direction, that is, the same height in a direction parallel to the south end side. Further, the figure seen from the east side, that is, the north-south cross section, the steep slope toward the south side, that is, the elevation angle from the tangential horizontal line to the south side is monotonously non-decreasing with respect to the distance of the south end face.
It is assumed that the sun is at a position of south elevation angle α. Here, the “south elevation angle” refers to an angle formed by a horizontal line and sunlight in a plane when sunlight is projected onto the plane shown in FIG. If the actual elevation angle is θ and the angle between the sun direction and the true south direction is φ,

It is.
In the present specification, the terms “south” and “north” are used as a premise that the solar power generation apparatus is installed in the northern hemisphere and the sunlight is irradiated from the south side. When a solar power generation device is installed in the southern hemisphere, it is equivalent if "south" and "north" are reversed.
FIG. 2 is a diagram illustrating a light path. This figure is also a view of the solar power generation device viewed from the east side. The direction of the tangent to the reflecting surface changes, and incident light reflected by the reflecting surface 9 is projected onto various portions of the light receiving surface 6. In the figure, light projected on the uppermost end and the lowermost end of the light receiving surface 6 is shown. Incident light between the two solid arrows shown in the figure is projected almost uniformly on the entire light receiving surface 6. Since the output of the solar cell panel depends on the amount of light emitted from the portion where the light projection amount is minimum, the solar cell panel can be effectively utilized by projecting light almost uniformly.
Even if the position of the sun changes and the elevation angle to the south changes, almost uniform light projection to the entire light receiving surface 6 is similarly realized by other portions of the reflecting surface 9.

The photovoltaic power generator of the present invention is
The cross-sectional shape is below a straight line connecting the south end side and the north end side, the inclination of the tangent at the south end of the cross-sectional shape is equal to or less than the maximum elevation angle of the sun, and the inclination of the tangent at the north end of the cross-sectional shape Is smaller than the inclination of the solar cell panel.

FIG. 3 is a diagram illustrating a reflective surface. The figure is a sectional view in the north-south direction.
The reflecting surface 9 is below a straight line connecting the south end side of the north side solar cell panel row and the north end side of the south side solar cell panel row, and prevents light projected directly on the light receiving surface 6 without being reflected. There is nothing.
In addition, the tangential slope θ _{S at} the south end of the reflecting surface 9 is equal to or less than the maximum elevation angle of the sun, and light does not wrap around the back side of the reflecting surface. Here, the “maximum elevation angle” refers to the maximum value of the southward elevation angle, and corresponds to the elevation angle during the summer time on the day of the summer solstice.
Further, the slope θ _N of the tangent line at the north end of the reflection surface 9 is smaller than the inclination β of the solar cell panel, and light having a small south elevation angle immediately after sunrise and just before sunset can be reflected toward the light receiving surface. Yes.

The photovoltaic power generator of the present invention is
In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
Stretching the first reflective sheet on the first plane connecting the northern end side of the solar cell panel row and the installation surface below it,
A second reflecting sheet is stretched on a second plane connecting the southern end side of the solar cell panel row and the installation surface thereunder,
Installation surface on the installation surface (inter-row installation surface) between the ground plane of the first plane relating to one solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A light reflection structure is provided.

Here, the “installation surface light reflection configuration” may be anything as long as it reflects light.
FIG. 4 is a diagram illustrating a configuration of the solar power generation device. The figure is the figure which looked at the solar power generation device from the east side, and the left side of the figure is the south side. The light receiving surface 6 of the solar cell is inclined by an angle β upward on the south side. The first reflection sheet 1 and the second reflection sheet 2 are stretched as shown in the figure, and the inter-row installation surface 3 is in the position shown in the figure. It is assumed that the sun is at a position of south elevation angle α.
Hereinafter, the first reflective sheet 1, the second reflective sheet 2, and the inter-row installation surface 3 will be described as reflecting light in the same manner as a plane mirror.
FIG. 5 is a diagram illustrating a light path. This figure is also a view of the solar power generation device viewed from the east side. In the summer (approximately from spring to autumn), the sun has a time zone that is located on the north side of true east or true west. Since the light receiving surface 6 faces south, sunlight does not irradiate the light receiving surface 6 directly. However, if the south elevation angle γ is small, as shown in the figure, sunlight is reflected in turn by the first reflecting sheet 1, the second reflecting sheet 2, the inter-row installation surface 3, and the first reflecting sheet. The light receiving surface 6 is irradiated. (Γ should be called “north elevation angle” instead of “south elevation angle”, but it reflects in the north-south direction and has the same meaning as “south elevation angle”.)
FIG. 6 is a diagram showing light paths in the east-west direction. The figure is a view of the solar power generation device as viewed from above. Although the light path in the north-south direction is shown in FIG. 5, since sunlight in the early morning or evening is incident from approximately east or approximately west, as shown in FIG. It may move beyond the east-west direction and be emitted without irradiating the light receiving surface 6. This possibility can be reduced by increasing the length of one row of solar cells.
FIG. 7 is a diagram illustrating a light path. When the sun is located on the south side of true east or west, the minimum value α _min of the south elevation angle of the light reflected by the second reflection sheet 2 without directly irradiating the light receiving surface 6 is shown in the figure. As shown, it is determined by the distance d between the rows of solar cells. If the column spacing d is shorter than the solar cell width w, then α _min > β. The light radiated through the second reflecting sheet 2, the inter-row installation surface 3 and the first reflecting sheet 1 is radiated with an inclination of α _min and is not irradiated on the light receiving surface 6. Head for. In some cases, the light is emitted through a complicated route other than the route shown in the figure, but in any case, the light receiving surface 6 is irradiated without being changed by being inclined upward by α _min. Head up.
As described above, when the first reflection sheet 1, the second reflection sheet 2, and the inter-row installation surface 3 reflect light in the same manner as a plane mirror, the sun is on the north side of true east or true west. It has the effect of reflecting a part of sunlight and irradiating the light receiving surface 6 in the time zone. Further, when the column interval d is longer than the width w of the solar cell, it has an effect of increasing the amount of light applied to the light receiving surface 6 even in a time zone where the sun is located on the south side of the true east or true west. obtain.

The photovoltaic power generator of the present invention is
The installation surface light reflection configuration is a configuration in which a third reflective sheet is stretched on the installation surface between rows, and white sand or white gravel having a light reflectance of 70% or more is laid on the installation surface between rows. It is characterized by that.

  Although the above description has been made assuming that the inter-row installation surface 3 reflects light in the same manner as a plane mirror, the inter-row installation surface 3 is a place where a person may walk due to construction or the like. Therefore, it is preferable that a third reflecting sheet is stretched and removed during construction, or white sand or white gravel is spread to reflect light.

The photovoltaic power generator of the present invention is
It is installed on the roof of the building.
The installation surface light reflection configuration is characterized in that the installation surface between rows is painted white.

  When installed on the roof of a building, the inter-row installation surface is often a concrete surface, and it is easy to paint white so as to reflect light. The labor required for construction is reduced.

The photovoltaic power generator of the present invention is
At least one of the first reflective sheet and the second reflective sheet has an inclined portion that occupies an area of 20% or more of the surface thereof,
The inclined portion has a difference in angle of 3 ° or more on a vertical plane in the north-south direction with respect to the first plane or the second plane on which the reflection sheet is stretched.

As described above, when the first reflection sheet 1, the second reflection sheet 2, and the inter-row installation surface 3 reflect light in the same manner as a plane mirror, the sun is on the south side of true east or true west. In order to have an effect of increasing the amount of light applied to the light receiving surface 6 in the time zone in which it is positioned, the column interval d needs to be longer than the width w of the solar cell. On the other hand, in order to increase the area of the light receiving surface with respect to the area where the solar power generation apparatus is installed, it is desired to reduce the column interval d. Therefore, in order to provide an effect of increasing the amount of light applied to the light receiving surface 6 in the time zone where the sun is located on the south side of true east or true west even if the column interval d is reduced, an inclined portion is provided. Realizes light reflection different from that of a plane mirror. Hereinafter, the effect of the inclined portion will be described.
FIG. 8 is a diagram illustrating a light path. The difference from FIG. 7 is that the first reflecting sheet is inclined at an angle δ from the vertical direction, with the upper part on the north side and the lower part on the south side. Although the entire first reflection sheet is not uniformly inclined at an angle δ, light that strikes a portion inclined by an angle δ from the vertical will be described. In addition, when the surface of the first reflection sheet has a curved surface shape, the same result is obtained with the inclination angle of the contact surface as δ.
Since the first reflective sheet is inclined by an angle δ from the vertical, the light emitted via the second reflective sheet 2, the inter-row installation surface 3 and the first reflective sheet 1 is When the light is reflected by the reflection sheet and travels in the direction of the light receiving surface 6, it is directed downward by 2δ from FIG. If β + 2δ> α _min, there is a south elevation angle α such that the reflected light irradiates the light receiving surface 6 even if β <α _min . In some cases, the light is radiated through a complicated route other than the route shown in the figure. In any case, the light is reflected by 2δ every time it is reflected by the first reflecting sheet. There is a south elevation angle α that irradiates the light receiving surface 6.
The light receiving surface 6 can be irradiated with more light.
Even if the second reflecting sheet is inclined by an angle δ from the vertical (the upper part is on the north side and the lower part is on the south side as in the case of the first reflecting sheet), the same effect is obtained.
In addition, what is necessary is just to design about the specific value of (delta) as a value optimized with respect to the latitude etc. of the place which installs a solar power generation device. Since one optimum value is not determined, a specific value is not mentioned in this specification, but an effect is recognized if there is an inclination of about 3 °.

The photovoltaic power generator of the present invention is
The inclined portion is formed by embossing the surface of a reflection sheet.

Since each point of the inclined portion reflects light, the effect can be obtained even when the reflection sheet is not uniformly inclined but the inclination of a small portion. An inclination caused by unevenness of about several millimeters with respect to the plane can be easily formed by embossing, and an effective reflection sheet can be produced at low cost.
FIG. 9 is a diagram illustrating the surface of the reflection sheet. For example, a square section with a side of 5 mm is taken as one unit, and the center of each unit has a quadrangular pyramid shape protruding by 1 mm with respect to the plane, so that the upper inclined portion 7 and the lower inclined portion 8 are planes on which the reflection sheet is stretched. It will be inclined about 22 ° with respect to.
An inclined portion having an angle difference of 3 ° or more with respect to a plane on which the reflection sheet is stretched has an area of about 25%.
The lower inclined portion 8 has the above-described effect when stretched on the first plane, and the upward inclined portion 7 has the above-described effect when stretched on the second plane. Only one type of reflection sheet can be used for the first plane and the second plane.

The photovoltaic power generator of the present invention is
In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
An additional solar cell panel on one of the first plane connecting the north end side of the solar cell panel row and the installation surface below it or the second plane connecting the south end side of the solar cell row and the installation surface below it A row,
Put a reflective sheet on the other side,
The additional solar cell panel row is electrically connected in parallel with the solar cell panel row (solar cell panel row other than the additional solar cell panel row),
Installation surface light on an installation surface (inter-row installation surface) between the ground plane of the first plane relating to a certain solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A reflection structure is provided.

Instead of stretching the reflection sheet on the first plane or the second plane, an additional solar cell panel row is provided.
The reflection sheet is provided to reflect light and finally irradiate the light receiving surface 6. If an additional solar cell panel row is provided instead of the reflection sheet, the light receiving surface of the additional solar cell panel row can be irradiated without reflecting light, and the light irradiated on the first plane or the second plane can be irradiated. All can be used for power generation. Efficiency is high because there is no light traveling upward without being irradiated on the light receiving surface 6.
In this case, since the light irradiation amount to the additional solar cell panel row and the light irradiation amount to the solar cell panel rows other than the additional solar cell panel row are different, the generated currents are different. Therefore, when these solar cell panel rows are connected in series, the total generated current is restricted to the one with the smaller generated current. Therefore, they are connected in parallel.
It should be noted that the installation surface between the rows is a place where a person may walk due to construction or the like, and it is difficult to provide an additional solar cell panel row, so that an installation surface light reflection configuration is provided.

The photovoltaic power generator of the present invention is
In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
A first additional solar cell panel row is provided on a first plane connecting the northern end side of the solar cell panel row and the installation surface therebelow,
A second additional solar cell panel row is provided on a second plane connecting the south end side of the solar cell panel row and the installation surface therebelow,
The first additional solar panel row, the second additional solar panel row and the solar panel row (solar cell panel rows other than the additional solar panel row) are electrically connected in parallel,
Installation surface light on an installation surface (inter-row installation surface) between the ground plane of the first plane relating to a certain solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A reflection structure is provided.

  For both the first plane and the second plane, an additional solar cell panel row is provided in place of stretching the reflection sheet.

The photovoltaic power generator of the present invention is
A fourth reflective sheet is stretched above the north end of the solar power generation device or further north.

FIG. 10 is a diagram illustrating a light path. A part of the light reflected by the fourth reflection sheet can pass through a path as shown in the figure, and has the following effects (1) and (2). (1) Irradiate the light receiving surface 6 directly. (2) Reflected by the first reflecting sheet 1 attached to the solar cells in each row, and further reflected by the inter-row installation surface 3, the second reflecting sheet 2, and the first reflecting sheet 1 to receive the light receiving surface 6 Irradiate. In addition, even when it radiates | emits via complicated paths other than the path | route shown in a figure, the light-receiving surface 6 may be irradiated.
The amount of light that irradiates the light receiving surface 6 can be increased.

The photovoltaic power generator of the present invention is
At least one of the east end or the west end of the solar cell array arranged in two or more rows is aligned on a straight line,
A fifth reflecting sheet is stretched on the straight portion between adjacent solar cell panel rows.

  FIG. 11 is a diagram illustrating a light path. In FIG. 6 without the fifth reflection sheet 5, the light that moves and radiates in the east-west direction beyond the length of one row of solar cells is reflected by the fifth reflection sheet, and the length of one row of solar cells. Irrespective of this, the light receiving surface 6 is irradiated.

  It is possible to provide a solar power generation device that obtains a sufficient light collection rate using a reflection sheet.

FIG. 1 is a diagram illustrating a configuration of a solar power generation device. FIG. 2 is a diagram illustrating a light path. FIG. 3 is a diagram illustrating a reflective surface. FIG. 4 is a diagram illustrating a configuration of the solar power generation device. FIG. 5 is a diagram illustrating a light path. FIG. 6 is a diagram showing light paths in the east-west direction. FIG. 7 is a diagram illustrating a light path. FIG. 8 is a diagram illustrating a light path. FIG. 9 is a diagram illustrating the surface of the reflection sheet. FIG. 10 is a diagram illustrating a light path. FIG. 11 is a diagram illustrating a light path. FIG. 12 is a perspective view showing a solar power generation device. FIG. 13 is a diagram illustrating dimensions of the solar power generation device.

  Examples of the present invention will be described below. The principles of the present invention have already been fully described. This embodiment shows one implementation example and its effect. As described above, some embodiments are different from the present embodiment, and the technical scope of the present invention is not limited to the present embodiment.

FIG. 12 is a perspective view showing a solar power generation device. Five rows of solar cells are arranged in parallel, and the first reflecting sheet 1, the second reflecting sheet 2, and the third reflecting sheet 3 are stretched in the four lanes between these rows. Yes. A fourth reflection sheet 4 is stretched above the solar cells in the northernmost row. A fifth reflecting sheet 5 is stretched at the east end and the west end of the solar cell. In addition, although a solar cell, the 4th reflective sheet 4, etc. are supported by the support | pillar, the support | pillar is abbreviate | omitted suitably in the figure.
All of the reflection sheets are as shown in FIG.

  FIG. 13 is a diagram illustrating dimensions of the solar power generation device. The figure shows the northern end of the solar cells in the northernmost row and the solar cells in the next row. In addition, the number in a figure represents a dimension in mm unit.

  According to the present embodiment, all the methods described in the means for solving the problem are mounted, and the amount of light that irradiates the light receiving surface can be increased. According to the applicant's simulation, when the photovoltaic power generation apparatus of this embodiment is installed at a latitude of 35 ° north latitude, the annual total (assuming that it is clear in all hours), the power generation of the photovoltaic power generation apparatus The amount is increased by about 40% compared to that without the reflective sheet.

  In the present embodiment, the configuration shown in FIG. 7 is used, but the configuration shown in FIG. 4 can also be used.

  It is a solar power generation device that obtains a sufficient light collection rate using a reflective sheet, and can be used by many power generation companies.

DESCRIPTION OF SYMBOLS 1 1st reflective sheet 2 2nd reflective sheet 3 Inter-row installation surface (3rd reflective sheet)
4 4th reflective sheet 5 5th reflective sheet 6 Light-receiving surface 7 Upper inclined part 8 Lower inclined part 9 Reflecting surface

Claims (12)

In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
A reflective sheet is pasted on a curved reflective surface provided between the south end side of one solar cell panel row and the north end side of the solar cell row adjacent to the south,
The reflective surfaces are the same height in a direction parallel to the south end side,
With respect to a cross-sectional shape obtained by cutting the reflecting surface in a cross section perpendicular to the south end surface, the elevation angle from the horizontal line of the tangent to the south side of the cross-sectional shape is monotonously non-decreasing with respect to the distance of the south end surface. Solar power generator.   The cross-sectional shape is below a straight line connecting the south end side and the north end side, the inclination of the tangent at the south end of the cross-sectional shape is equal to or less than the maximum elevation angle of the sun, and the inclination of the tangent at the north end of the cross-sectional shape The solar power generation device according to claim 1, wherein is smaller than the inclination of the solar cell panel. In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
Stretching the first reflective sheet on the first plane connecting the northern end side of the solar cell panel row and the installation surface below it,
A second reflecting sheet is stretched on a second plane connecting the southern end side of the solar cell panel row and the installation surface thereunder,
Installation surface on the installation surface (inter-row installation surface) between the ground plane of the first plane relating to one solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A solar power generation device, characterized in that a light reflection configuration is provided.   The solar power generation device according to claim 1, wherein the installation surface light reflection configuration includes a third reflection sheet stretched on the inter-row installation surface.   2. The photovoltaic power generation apparatus according to claim 1, wherein the installation surface light reflection configuration is a configuration in which white sand or white gravel having a light reflectance of 70% or more is laid on the inter-row installation surface. It is installed on the roof of the building,
2. The photovoltaic power generation apparatus according to claim 1, wherein the installation surface light reflection configuration is a configuration in which the inter-row installation surface is painted white. At least one of the first reflective sheet and the second reflective sheet has an inclined portion that occupies an area of 20% or more of the surface thereof,
The inclined portion has an angle difference of 3 ° or more on a vertical plane in a north-south direction with respect to the first plane or the second plane on which the reflection sheet is stretched. The solar power generation device of any one of -4.   The solar power generation device according to claim 5, wherein the inclined portion is formed by embossing a surface of a reflection sheet. In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
An additional solar cell panel on one of the first plane connecting the north end side of the solar cell panel row and the installation surface below it or the second plane connecting the south end side of the solar cell row and the installation surface below it A row,
Put a reflective sheet on the other side,
The additional solar cell panel row is electrically connected in parallel with the solar cell panel row (solar cell panel row other than the additional solar cell panel row),
Installation surface light on an installation surface (inter-row installation surface) between the ground plane of the first plane relating to a certain solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A solar power generation device, characterized in that a reflective configuration is provided. In the solar power generation apparatus in which two or more rows of solar cell panels in which the substantially rectangular light-receiving surface is inclined upward in the south direction are arranged in the north-south direction,
A first additional solar cell panel row is provided on a first plane connecting the northern end side of the solar cell panel row and the installation surface therebelow,
A second additional solar cell panel row is provided on a second plane connecting the south end side of the solar cell panel row and the installation surface therebelow,
The first additional solar panel row, the second additional solar panel row and the solar panel row (solar cell panel rows other than the additional solar panel row) are electrically connected in parallel,
Installation surface light on an installation surface (inter-row installation surface) between the ground plane of the first plane relating to a certain solar cell panel row and the ground plane of the second plane relating to the solar cell panel row adjacent to the north A solar power generation device, characterized in that a reflective configuration is provided.   The solar power generation device according to any one of claims 1 to 8, wherein a fourth reflection sheet is stretched above the north end side of the solar power generation device or further to the north side thereof. At least one of the east end or the west end of the solar cell array arranged in two or more rows is aligned on a straight line,
The solar power generation device according to any one of claims 1 to 9, wherein a fifth reflection sheet is stretched on the straight line portion between adjacent solar cell panel rows.

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