JP5346766B2 - Solar power plant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photovoltaic power generator capable of reflecting light, leaking on an outer peripheral side of a solar cell panel, to the solar cell panel. <P>SOLUTION: The photovoltaic power generator 10 includes a solar cell panel 12 having a plurality of solar cell modules 11 arrayed longitudinally and laterally. The solar cell panel 12 is provided so as to be displaced, and a reflecting plate 50 and an upper portion-reflecting plate 51, which reflect sunlight to the solar cell modules 11, are provided on the outer peripheral side of the solar cell modules 11. The upper portion-reflecting plate 51 is set to a tilt angle such that an upper portion is inside a lower portion, and can widely keep the incident angle of light which is reflected by the upper portion-reflecting plate 51 to be incident on the solar cell modules 11. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a solar power generation device, and more particularly to a solar power generation device capable of improving power generation efficiency by increasing the amount of light collected by a solar cell panel.

Solar power generation devices that do not cause environmental destruction are attracting attention as alternative energy sources, and have already been installed and introduced in buildings, etc. in public institutions, companies, or ordinary households.
The solar power generation device can secure a large amount of light collection in proportion to the area of the solar cell panel, thereby obtaining a large amount of power generation, but when installing the solar cell panel in a building, Naturally, there will be restrictions, and the amount of power generated will depend on the installation area.
Patent Document 1 discloses a solar panel device in which a reflective surface is formed around a solar cell panel, and the light collected by the solar cell panel is backed up by the reflective surface to improve power generation efficiency.

JP 2008-147229 A

The configuration described in Patent Document 1 reflects sunlight that passes outside the solar cell panel to the solar cell panel. However, since the incident angle of reflected light to the solar cell panel is shallow, most of the reflected light is solar. Reflecting on the surface of the battery panel, a large amount of light cannot be secured, and improvement in power generation efficiency cannot be expected so much.
In general, since the solar cell panel is provided in a planar shape, the back side of the solar cell panel is an area that is not exposed to sunlight. Therefore, when a photovoltaic power generation device is installed on farmland or the like, a partial area on the ground is shaded. become. In this regard, Patent Document 1 does not consider the sunshine on the back side of the solar cell panel at all, and therefore has a disadvantage that it cannot be adapted for installation on farmland or the like.

[Object of the invention]
An object of the present invention is to provide a solar power generation device capable of improving power generation efficiency by relatively increasing the amount of light collected on a solar cell panel when sunlight passing through the outer peripheral side of the solar cell panel is reflected. Is to provide.
In addition, another object of the present invention is to achieve sufficient power generation using sunlight, while the solar panel is installed on the ground, which is the back side of the solar panel, even if the solar panel is installed outdoors. It is providing the solar power generation device which can irradiate.
Furthermore, the object of the present invention is to use the position of the sun, that is, the azimuth and altitude as data, and control the angle of the solar cell panel based on the position data and the actual azimuth and elevation angle of the solar cell panel to generate power. An object of the present invention is to provide a solar power generation device that can irradiate the ground with sunlight while improving or maintaining the above.

In order to achieve the above object, the present invention is a photovoltaic power generation apparatus including a solar cell panel in which a plurality of solar cell modules are arranged vertically and horizontally,
The solar cell panel is provided so as to be displaceable based on a preset control standard, and on the outer peripheral side, a reflector that is inclined outward by a predetermined angle with respect to the surface of the solar cell panel, and the reflector With an upper reflector arranged at the top of
The reflection surface of the upper reflector has a configuration in which the upper part is disposed at an inclination angle that is located inside the lower part.

  In this invention, it is preferable to take the structure that the said reflector and an upper reflector are each provided in the outer periphery of a solar cell module.

  Moreover, it is possible to adopt a configuration in which a space is provided between each reflector provided in the solar cell module and each reflector provided in an adjacent solar cell module so that sunlight can pass therethrough.

  Furthermore, the solar cell module may be a daylighting type having a gap between cells forming the solar cell module.

Further, a driving device for displacing the azimuth and elevation angle of the solar cell panel, an integrating wattmeter for detecting the output of the solar cell panel, a detector for detecting the azimuth and elevation angle of the solar cell panel, a date, time, and A solar position data set based on the installation latitude and longitude of the solar power generation device is further preset, and further includes a controller that performs a predetermined control,
The controller reads the position data at a predetermined timing, and adopts a configuration in which the solar cell panel is angularly displaced according to a difference from an actual orientation and an elevation angle of the solar cell panel given from the detector. it can.

According to the present invention, sunlight passing through the outside of the solar cell panel is first reflected to the upper reflector via the reflector. The upper reflector has an inclination angle where the upper part of the reflecting surface is located on the inner side of the lower part, so that the incident angle of the solar cell panel can be increased, and the reflected light is reflected on the surface of the solar cell panel. The amount is reduced. As a result, it is possible to improve the power generation efficiency as compared with the conventional type including a reflector having an inclination angle with the upper portion positioned outside the lower portion.
Moreover, since the space which enables passage of sunlight is provided between a solar cell module and a reflecting plate, sunlight can be partially irradiated with respect to the area | region which is shaded with a solar cell panel.
In addition, by adopting a configuration in which the solar cell panel is angularly displaced, it is possible to change the sunshine region to the ground while maintaining power generation efficiency.

The block block diagram of the solar power generation device which concerns on this embodiment. The schematic front view of the solar cell panel which comprises a solar cell power generation device. The schematic side surface of the said solar power generation device. Explanatory drawing which shows the relationship between a solar cell module and a reflecting plate.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  In addition, the solar power generation device in this embodiment employ | adopts as a basic composition the system of Japanese Patent Application No. 2008-170195 already applied by this applicant. Therefore, in the following description, detailed description is omitted as necessary.

  1 to 3, a solar power generation device 10 includes a solar cell panel 12 that is an aggregate of a large number of solar cell modules 11 that are arranged vertically and horizontally in a frame F having a substantially square outer shape, and the solar cell panel 12. , An integrated wattmeter 14 composed of an inverter display that detects the output and output integrated value of the solar battery panel 12, a wind speed sensor 15, a rain sensor 16, and the orientation of the solar battery panel 12, A drive device 17 for displacing the elevation angle, and outputting a predetermined control signal to the drive device 17 to displace the azimuth and elevation angle of the solar cell panel 12, as well as the integrating wattmeter 14, wind speed sensor 15, and rain sensor 16 A controller 18 that performs predetermined control using detection data as an input, and performs predetermined input to the controller 18 and outputs to the controller 18 Zui, the various displays and including an output integrated value or the like, and is configured by a battery (not shown) and input-output device 19 having a transmitting and receiving function or the like to an external device.

  The frame F has a substantially rectangular outline, and has a vertical frame F1 and a horizontal frame F2 inside thereof, and a total of twelve solar cell modules 11 are arranged via the frames F, F1, and F2, respectively. ing.

  The solar cell modules 11 have the same structure. This solar cell module 11 is composed of an assembly of a large number of cells 11A whose planar shape is substantially square, and the cells 11A are arranged with a gap (not shown) between them, so that sunlight can pass between the cells 11A. The solar cell module 11 of the type is configured. On the outer peripheral side of each solar cell module 11, a reflecting plate 50 inclined by a predetermined angle with respect to the surface of the solar cell panel 12 is provided, and an upper reflecting plate 51 is provided above the reflecting plate 50 from an arm or the like. The support member 52 is provided. Each of the reflecting plate 50 and the upper reflecting plate 51 has a rectangular shape and has a length substantially the same as the length of one side of the solar cell module 11. Although not particularly limited, the width in the short dimension direction of the reflecting plate 50 is 90 mm, the width in the short dimension direction of the upper reflecting plate 51 is set to about 70 mm, and the reflecting surface of the reflecting plate 50 is inclined. The angle α (see FIG. 4) is set to 140 degrees, and the reflection surface of the upper reflector 51 has an inclination angle α1 (see FIG. 4) of 75 degrees with respect to a virtual plane parallel to the surface of the solar cell module 11. Is set. The solar cell module 11 is supported by the frame F with a space S therebetween, and the reflecting plate 50 and the upper reflecting plate 51 are the reflecting plate 50 and the upper reflecting plate 51 provided in the adjacent solar cell module 11. Are adjacent to each other in a state in which a space S is formed, so that sunlight can pass through the space S.

  The support 13 includes a support column 20, a base 21 located under the support column 20, and a concrete 22 that embeds the base 21 in the ground. A rotating member 25 that can rotate in a horizontal plane is provided on the upper portion of the support 13. A shaft 26 is supported on the rotating member 25, and the solar cell panel 12 is provided on the shaft 26 via a bracket 27 so as to be rotatable in the direction of arrow a in FIG. Accordingly, in the solar cell panel 12, the rotation direction of the rotating member 25 makes it possible to displace the orientation in which the light receiving surface faces the front with respect to the sun, while the bracket 27 rotates so that the incident angle of the sunlight with respect to the horizontal line. The angle of elevation becomes displaceable.

  The drive device 17 is configured to include a known drive system 28 such as a motor (not shown) that rotates the rotating member 25 and the bracket 27, and an azimuth detector 30 disposed at the upper portion of the column 20 and an elevation angle detection. Device 31. In the present embodiment, an azimuth detector 30 and an elevation angle detector 31 are configured by an encoder, and the azimuth detector 30 and the elevation angle detector 31 can detect the actual azimuth and elevation angle of the solar battery panel 12, and the detection is performed. Data is output to the controller 18. Moreover, these detectors 30 and 31 are provided so that reset is possible as needed, when the solar cell panel 12 returns to an origin position. In the present embodiment, the elevation angle detector 31 is set to reset the detection value every time the solar battery panel 12 is in the horizontal position. Further, the direction detector 30 is set to reset the detection value when returning to the origin position after sunset. In addition, a limit switch (not shown) that restricts the displacement angle range of the azimuth and the elevation angle is disposed on the upper portion of the support column 20. The limit switch for the azimuth is provided at the position of −135 ° in the east direction and + 135 ° in the west direction with the light-receiving surface of the solar cell panel 12 facing right south as 0 °, while the limit switch for the elevation angle Are respectively provided at a horizontal position and a vertical position. The positions of these limit switches can be arbitrarily changed. Therefore, the displacement angles of the azimuth and the elevation angle of the solar cell panel 12 can also be changed.

  The controller 18 includes a function for setting and storing solar position data via the input / output device 19 based on the date, time, and the installation latitude and longitude of the photovoltaic power generation apparatus 10, a timer function, and the like. Further, the controller 18 compares the azimuth and elevation angle of the solar battery panel 12 given from the azimuth detector 30 and the elevation angle detector 31 with the azimuth and elevation angle corresponding to the position data, and obtains an angular difference between them. A function for controlling the driving device 17 in accordance with the angle difference, a function for controlling the driving device 17 using the output of the solar cell panel 12 output from the integrating wattmeter 14 and the output integrated value as input, and an output from the wind speed sensor 15. A function of controlling the drive device 17 by comparing the set wind speed value with a set value that determines an allowable range, and a function of controlling the drive device 17 by determining rain and snow based on data output from the rain sensor 16 And various functions for total control of the entire apparatus.

  The photovoltaic power generation apparatus 10 according to the present embodiment is a sunlight tracking system under the conditions disclosed in Japanese Patent Application No. 2008-170195. Therefore, description of the specific contents of the tracking is omitted here.

  In the solar cell panel 12 of this embodiment, in addition to the sunlight that is directly incident on the solar cell module 11, sunlight that passes outside the solar cell module 11 is reflected on the solar cell module 11 by the reflector 50. A part of the light component reflected by the reflecting plate 50 is reflected by the upper reflecting plate 51, and the reflected light is reflected by the upper reflecting plate 51 and enters the surface of the solar cell module 11. At this time, the reflected light is incident on the solar cell module 11 at an incident angle θ of about 20 degrees with respect to the solar cell module 11 by the inclination angle α1 of the upper reflector 51. This incident angle increases the amount of light collected on the solar cell module 11 as compared with the case where there is no upper reflector, and thus the power generation amount of the solar power generation device 10 can be improved.

Moreover, sunlight can irradiate the ground through the space S between the solar cell modules 11 and the gaps between the cells constituting the module, and the orientation and elevation angle on the data indicating the position of the sun recorded in advance. And the actual azimuth and elevation angle of the solar cell panel 12, and the solar cell panel 12 is angularly displaced according to the difference, so that the shade generated on the back side of the solar cell panel 12 in relation to the position of the sun. Sunlight can be irradiated in the region. The position of the space S changes with the displacement of the solar cell panel 12. Therefore, when considered throughout the day, it is possible to form an area where sunlight is radiated with almost no shaded area, and there is almost no area without sunlight.
Therefore, when the solar cell power generation device according to the present embodiment is installed on a farmland or the like, it is possible to drive electric facilities using power generation in the farmland without causing any hindrance to the growth.

The best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this.
That is, the invention has been illustrated and described with particular reference to particular embodiments, but it should be understood that the above-described embodiments are not deviated from the technical idea and scope of the invention. On the other hand, those skilled in the art can make various modifications in shape, material, quantity, and other detailed configurations.

For example, in the said embodiment, although the reflecting plate 50 and the upper reflecting plate 51 were arrange | positioned along each edge | side of each solar cell module 11, the reflecting plate 50 and the upper reflecting plate 51 are arrange | positioned at a pair of position which opposes at least. But you can. Furthermore, the size and the inclination angle of the reflectors 50 and 51 are not limited to the above-described embodiment, and do not prevent changing as necessary.
Moreover, although the reflecting plate 50 and the upper reflecting plate 51 are provided in each solar cell module 11, the reflecting plate 50 and the upper reflecting plate are provided on the four sides forming the outer periphery of the frame F without being provided in these solar cell modules 11. 51 may be provided.
Furthermore, in the said embodiment, although the case where the solar cell panel 12 was comprised by arrange | positioning a total of 12 solar cell modules 11 was illustrated and demonstrated, the number of adoption of the solar cell modules 11 should be increased or decreased as necessary. Can do.

  Furthermore, the tracking control method of the solar power generation device 10 is not limited to the embodiment, and simply by tracking sunlight based on the amount of solar radiation and the amount of power generation, or by detecting the direction of solar radiation. It is good also as a method of tracking sunlight.

DESCRIPTION OF SYMBOLS 10 Solar power generation device 11 Solar cell module 11A Cell 12 Solar cell panel 50 Reflector 51 Upper reflector S Space

Claims (5)

A solar power generation apparatus having a solar panel having an array of photovoltaic modules multiple horizontally and vertically,
The solar cell panel is provided so as to be displaceable based on a preset control standard, and on the outer peripheral side, a reflector that is inclined outward by a predetermined angle with respect to the surface of the solar cell panel, and the reflector With an upper reflector arranged at the top of
The solar power generator according to claim 1, wherein the reflection surface of the upper reflection plate is arranged at an inclination angle such that the upper part is located inside the lower part.   The solar power generator according to claim 1, wherein the reflector and the upper reflector are respectively provided on the outer periphery of the solar cell module.   The solar cell module is characterized in that a space is provided between each reflector provided in the solar cell module and each reflector provided in an adjacent solar cell module so that sunlight can pass therethrough. The solar power generation device according to 2.   4. The solar power generation apparatus according to claim 1, wherein the solar cell module is a daylighting type having a gap between cells forming the solar cell module. 5. Driving device for displacing the azimuth and elevation angle of the solar cell panel, an integrating wattmeter for detecting the output of the solar cell panel, a detector for detecting the azimuth and elevation angle of the solar cell panel, date, time and sunlight The solar position data is set in advance based on the installation latitude and longitude of the power generation device, and further includes a controller that performs predetermined control.
The controller reads out the position data at a predetermined timing, and angularly displaces the solar cell panel according to a difference from an actual orientation and an elevation angle of the solar cell panel given from the detector. The solar power generation device in any one of 1-4.

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