JP3769556B2 - Floating solar power generation system - Google Patents

Description

  The present invention relates to a floating solar power generation apparatus that generates power using a solar cell in a state of floating on the water surface of a sea, a lake, a pond, a pool or the like.

  Solar power generation on the water has the advantage that it can use the vast waters of the sea and lakes, does not need to secure a site for facilities like onshore, has no obstacles to block sunlight, and has few restrictions on installation locations. In addition to being able to respond to power supply to various electrical devices used offshore from the shore and places where it is difficult to install power cables, it is also possible to build large-scale power generation facilities by increasing the number of power generation units It is.

  Conventionally, as a solar power generator, a solar buoy (Patent Document 1) in which a hemispherical translucent case is attached in a watertight state to a base on which a light emitting unit composed of a solar cell, a storage battery, a light emitting diode, etc. is mounted, is tethered on the water. A solar cell is laid on the entire outer surface of the upper hemisphere of the spherical floating body, and a storage battery and an electric device are provided inside the spherical floating body (Patent Document 2), and a rotating mount on which the solar cell array is mounted floats on the water surface. As the rotating mount is rotated so as to track the sun direction by driving a screw (Patent Document 3), a mount provided with a solar cell and a motor is floated on the water, Wrap endless belts between the pulleys connected to each fence placed in place and the pulleys provided on the gantry, and move these belts by driving the motor so that the gantry is directed toward the sun. Those manner (Patent Document 4) have been proposed.

  By the way, in solar power generation, in order to improve power generation efficiency, it is desirable that the surface direction of the solar panel constituting the solar cell be perpendicular to the irradiation direction of sunlight. However, in the solar buoy, the orientation of the solar panel cannot be adjusted, so that high power generation efficiency cannot be obtained throughout the day. In addition, in the case where solar cells are laid on the entire outer surface of the upper hemisphere of the spherical floating body, there will always be a shaded area in the solar cells on the entire outer surface, which is very wasteful in terms of equipment efficiency. Has the disadvantage of being large.

  On the other hand, in the case of rotating a rotating platform that is floated on the surface of the water by driving a screw or rotating a platform that is floated on the water through the movement of an endless belt, the solar panel is oriented from east to west of the solar position. The power generation efficiency is improved accordingly, but the solar position's diurnal variation also changes with the direction change from east to west, so it is always possible to obtain the maximum power generation efficiency. In addition, it is easy to be affected by the flow of water and wind waves when the gantry rotates, and it is very difficult to set the solar panel to the proper orientation. Sex is also insufficient.

Japanese Utility Model Publication No. 1-103495 JP-A-6-229366 JP 61-223909 A Japanese Utility Model Publication No. 62-40610

  In view of the above-mentioned situation, the present invention can follow the orientation of the solar panel corresponding to both the azimuth change from the east to the west and the elevation change of the solar position as a floating solar power generation device, and is always at the maximum. The purpose of the present invention is to provide a device that can achieve a limited power generation efficiency, is highly reliable as a solar direction tracking means, has excellent durability, and can be manufactured at low cost.

  In order to achieve the above object, a floating solar power generation apparatus according to claim 1 of the present invention is shown on the water by a constant attitude holding means (rotation stop ropes 8, 8), if indicated with reference numerals in the drawings. The solar cell unit 2 is tilted by a rope (suspending rope 4) that hangs down from the inner top portion (hanging portion 15) of the spherical shell 1 in the center portion in the transparent spherical shell 1 that is held in a rotating floating posture. The solar cell unit 2 includes a support frame 20 that contacts the inner surface of the spherical shell 1 at a plurality of locations that are equally distributed in the circumferential direction. The solar panel 3 attached to the upper surface side of the support frame 20, the revolving body 21 pivotally attached to the center portion on the lower surface side of the support frame 20, and the pivot portion (central boss) of the revolving body 21 A circular shape centering on the part 20a), The revolving body 21 includes a pinion (drive pinion 25a) meshing with the rack gear 23, its rotation driving means (reversible motor 26a), and the rack gear. 23, a direction setting weight 28 movable along the radial direction of the annular ring and its moving means (reversible motor 26b, screw shaft 27), and the solar cell unit 2 has a direction setting weight 28 in the spherical shell 1. By taking an inclined posture with the side as a lower side and controlling the operation of the moving means and the rotation driving means by the posture control mechanism, the displacement of the center of gravity due to the radial movement of the direction setting weight 28 and the turning movement of the swiveling body 21 is achieved. The elevation angle and azimuth angle of the solar panel 3 are set.

  According to a second aspect of the present invention, in the above-described water solar power generation apparatus of the first aspect, the inside of the spherical shell 1 is replaced with an inert gas.

  According to a third aspect of the present invention, in the above-described water solar power generation apparatus according to the first or second aspect, the support frame 20 is pressed against the inner surface of the spherical shell 1 by a spherical roller 24 biased by a spring force (compression coil spring 24a). It is said.

  According to a fourth aspect of the present invention, in the above-described floating solar power generation apparatus according to any one of the first to third aspects, a spherical shell balancer weight 14 is provided on the bottom side of the spherical shell 1.

  According to a fifth aspect of the present invention, the submersible pump 7 is attached to the bottom side of the spherical shell 1 and the submersible pump is attached to the outer top portion of the spherical shell. The water injection nozzle 16 which injects the water sent from 7 toward the outer peripheral surface of the spherical shell 1 is provided.

  According to a sixth aspect of the present invention, in the above-described floating solar power generation apparatus according to any one of the first to fifth aspects, the moving means can rotate the screw shaft 27 and the screw shaft 27 screwed into the direction setting weight 28. The reverse rotation motor 26b is used.

  Invention of Claim 7 is equipped with the solar panel 3 in which the solar cell unit 2 is equally distributed around the center in the water solar power generation device in any one of the said Claims 1-6, and the power generation capability is equal. These solar panels 3 are gently inclined so that the center side is lowered with respect to the support frame 20, and the attitude control mechanism controls the operation of the moving means and the rotation driving means so as to minimize the output difference of these solar panels 3. It is set as the structure to do.

  According to a first aspect of the present invention, there is provided a water solar power generation apparatus in which a solar cell unit is suspended so as to be able to tilt and rotate in a transparent spherical shell held in a non-rotating floating posture on water, and the lower surface of the support frame. A pinion of a revolving body pivotally attached to the side engages with an annular rack gear on the support frame side, and the revolving body is provided with a direction setting weight movable along the radial direction of the ring of the rack gear, and a solar cell unit Takes a slanted posture with the direction setting weight side in the spherical shell, and the elevation angle of the solar panel attached to the support frame is turned by the center of gravity displacement due to the radial movement of the direction setting weight, and the azimuth angle of the solar panel is swung The solar panel is configured to be able to be set according to the displacement of the center of gravity accompanying the turning movement of the body, so the solar panel changes from west to east and from high to low, from sunrise to sunset. Always follow both the direction in which current light intensity is maximum, it is possible to obtain the maximum power generation efficiency. Thus, since the solar cell unit is suspended in the spherical shell, the orientation of the solar panel is smoothly changed by tilting and rotation, and the support body is circumferentially provided on the inner surface of the spherical shell. Since it is in contact at multiple locations that are evenly distributed, the suspension posture is stable, and even if the spherical shell fluctuates slightly due to waves or wind, the set orientation does not change, and the orientation setting is set to the radius of the direction setting weight. Because it can be performed by moving the direction and turning the swivel body, high reliability of attitude control to follow the solar direction is obtained, and the outer shape of the casing that houses the solar cell unit forms a sphere, making it difficult to receive wind pressure, Since it works only in the wind direction, it is difficult to cause rotation.

  Moreover, in this floating solar power generation device, since the solar cell unit is housed in the spherical shell, rust and salt damage due to adhesion of external water and salt do not occur, and the durability of the power generation mechanism and the operation mechanism Since the solar cell unit is separated from the spherical shell, the heat of the spherical shell heated by solar radiation is not easily transmitted to the solar cell unit, and the spherical shell is in contact with water. The temperature of the solar battery is reduced by heat exchange with water, so that a reduction in power generation efficiency due to the high temperature of the solar cell is suppressed. Furthermore, this power generator can set the solar panel orientation by moving the direction setting weight in the radial direction and the swiveling movement of the swivel body. In addition to the very simple structure of the operating part, the spherical shell is a solar cell. Since it also serves to protect the array, the protective casing of the solar panel itself can be omitted, and there is an advantage that it can be manufactured at a low cost.

  According to the invention of claim 2, in the above-mentioned water solar power generation device, since the inside of the spherical shell is replaced with an inert gas, clouding due to condensation on the inner surface of the spherical shell does not occur, and thus the light transmittance of the spherical shell is achieved. However, there is an advantage that high power generation efficiency can be obtained at all times, rust and oxidation deterioration of the metal portion of the solar cell unit can be prevented, and the durability life is extended.

  According to the invention of claim 3, in the above-described floating solar power generation apparatus, since the support frame is pressed against the inner surface of the spherical shell by the spherical roller biased by the spring force, the suspension posture of the solar cell unit is In addition to stabilization, the solar panel can be displaced more smoothly by the rolling of the spherical roller due to the tilting and rotation.

  According to the invention of claim 4, since the spherical shell balancer weight is attached to the bottom side of the spherical shell in the above water solar power generation device, the spherical shell always keeps the balancer weight side down even if there is a wave. It is kept stable in the floating position.

  According to the invention of claim 5, in the above-described water solar power generation device, since the water sent from the submersible pump is jetted from the top of the spherical shell toward the outer peripheral surface by the water jet nozzle, The spherical shell is cooled by heat exchange and the heat of vaporization due to water evaporation, so that the spherical shell can be reliably prevented from being destroyed due to the expansion of the internal gas, and a decrease in power generation efficiency due to the high temperature of the solar cell can be avoided.

  According to the sixth aspect of the present invention, since the direction setting weight is moved by the rotation of the screw shaft in the above-described water solar power generation apparatus, the position of the direction setting weight can be finely adjusted, so that the solar panel solar It is possible to set the elevation angle according to the direction with extremely high accuracy.

  According to the invention of claim 7, in the above-described floating solar power generation apparatus, at least three solar panels equally distributed around the center of the solar cell unit are gently inclined so that the center side is lowered with respect to the support frame. The attitude control mechanism is configured to control the operation of the moving means and the rotation driving means so as to minimize the output difference between the solar panels, so that a special solar direction detector such as an optical sensor is required. Therefore, there is an advantage that the manufacturing cost can be reduced accordingly.

  Hereinafter, an embodiment of a floating solar power generation apparatus according to the present invention will be specifically described with reference to the drawings. In FIG. 1, 1 is a spherical shell that is floating on the water W such as the sea, 2 is a solar cell unit accommodated in the spherical shell 1, 3 is a solar panel of the solar cell unit 2, and 4 is a solar cell unit. 2 is an anchor placed on the bottom B, 6 is a mooring rope connecting the bottom end of the spherical shell 1 and the anchor 5, 7 is a submersible pump interposed in the middle of the mooring rope 6, 8 is Rotation-stopping ropes 9 connecting the respective ends of the arm portions 5a, 5a protruding to the front and rear sides of the anchor 5 and the respective hooking portions 11 provided at the lower portions of the front and rear sides of the spherical shell 1 are generated by the solar cell unit 2. This is a power cable that guides power to the outside.

  The spherical shell 1 constitutes a sealed spherical case by fitting and integrating an upper hemisphere 1a and a lower hemisphere 1b made of a highly transparent synthetic resin such as polycarbonate or acrylic resin, The inner space 10 is replaced with nitrogen gas. A cylindrical portion 12 that protrudes downward is formed in the central portion of the lower hemisphere 1b that is the inner bottom portion of the spherical shell 1, and a spherical shell balancer weight 14 is formed in the recessed portion 13 that is formed inside the cylindrical portion 12. The spherical shell balancer weight 14 is fitted and the spherical shell 1 is stably maintained in a posture in which the cylindrical portion 12 is at the lowest position. The upper end of the mooring rope 6 connected to the anchor 5 is fixed to a hooking portion 12 a provided on the lower surface of the cylindrical portion 12. On the other hand, the suspension rope 4 has an upper end fastened to a hooking portion 15 provided at the center of the inner surface of the upper hemisphere 1 a that is the inner top portion of the spherical shell 1, and a lower end at the center position of the spherical shell 1. The unit 2 is secured to a latching part 2 a provided at the center.

  It should be noted that the anti-rotation ropes 8 and 8 connecting the both side arm portions 5a and 5a of the anchor 5 and the hooking portions 11 and 11 on the front and rear of the spherical shell 1 are slightly deeper than the free floating state in the water W. The length is set so as to pull in, thereby preventing the spherical shell 1 from rotating under the influence of water flow or wind waves. A water injection nozzle 16 is provided on the outer top of the spherical shell 1, and a water conduit 7 a extending from the submersible pump 7 is connected to the water injection nozzle 16. Water is jetted toward the outer peripheral surface of the spherical shell 1 from the discharge ports 16a provided on the entire circumference. Note that a branch line 9a from an electric cable 9 is connected to the submersible pump 7, and the drive power is covered by a part of the power generation amount by the solar panels 3.

  As shown in FIGS. 2 and 3, the solar cell unit 2 includes a support frame 20, four fan-shaped solar panels 3 fixed on the upper surface side of the support frame 20, and the support frame 20. The revolving body 21 is disposed on the lower surface side and is pivotally attached to the central boss portion 20a of the support frame 20 so as to be relatively rotatable. The controller 22 is attached to a position near the center of the revolving body 21. Therefore, the solar panels 3 have no protective casing, and the solar cell array is exposed.

  As shown in FIG. 3, the support frame 20 of this solar cell unit 2 is connected and integrated through four connecting rods 20c... In which a central boss portion 20a and a concentric ring portion 20b are arranged in a cross shape. It constitutes a circular frame and is arranged substantially along the plane near the maximum cross-section of the spherical shell 1, that is, the diameter. Each solar panel 3 is fastened to the central boss portion 20a of the support frame 20 at the fan-shaped main side, and is attached to the mounting piece 20d protruding from the annular portion 20b of the support frame 20 at the outer peripheral arc side. As shown in FIG. 1, it is in a state of being gently inclined so as to lower the center side. Further, on the lower surface side of the support frame 20, a rack gear 23 having an annular shape concentric with the central boss portion 20a is fixed to the connecting rod 20c with the gear surface facing downward.

  Further, as shown in detail in FIG. 4, an end member 20e is screwed to the outer end of each connecting rod 20c of the support frame 20, and the spherical roller 24 held in the hole 20f of the end member 20e. Is pressed against the inner surface of the spherical shell 1 through a pressing pin 24b biased by a compression coil spring 24a.

  The swivel body 21 of the solar cell unit 2 is provided with a drive pinion 25a and a driven pinion 25b that mesh with the rack gears 23 of the swivel body 21 on the upper surfaces of both end portions of the rectangular tubular main body 21a along the radial direction of the support frame 20, respectively. At the same time, a reversible motor 26a for rotating the drive pinion 25a is fixed. A screw shaft 27 parallel to the support frame 20 is rotatably supported on the lower surface side of the half portion of the rectangular tubular main body 21a on the driven pinion 25b side, and at a position near the center of the main body 21a. A reversible motor 26b for rotating the screw shaft 27 is fixed. The screw shaft 27 is screwed into a square block-shaped direction setting weight 28, and the direction setting weight 28 is slidably fitted to the rectangular tube-shaped main body 21a through a groove 28a as shown in FIG. With the rotation of the screw shaft 27 driven by the reversible motor 26b, the direction setting weight 28 is set so as to move in the radial direction using the rectangular tubular main body 21a as a guide. The driving power of the reversible motors 26a and 26b and the operating power of the controller 22 are covered by a part of the power generation amount of the solar panels 3.

  The controller 22 compares the outputs of the four solar panels 3 ... constantly or at regular intervals of several tens of seconds to several minutes, detects the sun direction by calculation from the output difference, and detects the detected sun The deviation of the azimuth angle and the elevation angle between the direction and the whole direction of the four solar panels 3 is calculated, and the relationship between the calculated value and the rotation amount and azimuth displacement amount of the drive pinion 25a input in advance, In addition, based on the relationship between the rotation amount of the screw shaft 27 and the elevation angle displacement amount, a command signal for driving the reversible motors 25a and 25b as much as necessary to correct the above-described deviation is output.

That is, in this water solar power generation device, the solar cell unit 2 suspended in the spherical shell 1 always takes an inclined posture with the weight 28 side as a lower position due to the weight of the direction setting weight 28. Due to the displacement of the center of gravity accompanying the radial movement of the direction setting weight 28, the inclination degree of the inclined state, that is, the elevation angle of the solar panel 3 changes, and the rotational movement of the revolving structure 21 relative to the support frame 20 , that is, the circumference of the direction setting weight 28 The orientation in the horizontal plane, that is, the azimuth angle of the solar panel 3 changes due to the displacement of the center of gravity accompanying the movement of direction . Therefore, by the drive control of the reversible motors 25a and 25b by the controller 22, the entire direction of the solar panel 3 follows both the azimuth change from the west to the east and the height change of the solar position from sunrise to sunset. Therefore, the maximum power generation efficiency can be obtained by always setting the amount of light collection to be maximum. Thus, the rotational movement of the revolving body 21 can be easily performed by meshing the annular rack gear 23 with the pinions 25a and 25b, and the radial movement of the direction setting weight 28 can be easily performed by the rotation of the screw shaft 27. Since the adjustment is possible, the azimuth angle and the elevation angle can be set with extremely high accuracy.

  Thus, in this water solar power generation apparatus, the solar cell unit 2 is suspended in the spherical shell 1 and the support frame 20 is circumferentially applied to the inner surface of the spherical shell 1 by a spherical roller 24 biased by a spring force. In addition to the smooth change in the overall direction of the solar panel 3 due to the radial movement of the direction setting weight 28 and the turning movement of the swivel body 21, the solar panel 3. The suspension posture of the battery unit 2 is stable, the set orientation does not change even if the spherical shell 1 is slightly swung by waves and winds, and the outer shape of the casing that houses the solar cell unit 2 forms a sphere. Since the wind force only acts in the direction of the wind, it is difficult to cause horizontal rotation, and the spherical shell balancer weight 14 causes the spherical shell 1 to always float with the balancer weight 14 side down. Since kept stable is the attitude, high reliability of the attitude control to follow the solar panels 3 ... overall orientation to the sun direction is obtained.

  Further, in this floating solar power generation device, since the solar cell unit 2 is housed in the spherical shell 1, rust and salt damage due to adhesion of external water and salt do not occur, and the inside of the spherical shell is replaced with nitrogen gas. Therefore, oxidation deterioration of electrode terminals and electric circuits, and oxidation deterioration of metal parts are prevented, and the durability of the power generation mechanism and the operation mechanism is good. Clouding of the inner surface of the spherical shell 1 due to condensation does not occur, and the light transmittance of the spherical shell 1 is always kept good, and high power generation efficiency is obtained. Further, since the solar cell unit 2 is separated from the spherical shell 1, the heat of the spherical shell 1 that is heated by solar radiation is not easily transmitted to the solar cell unit, and the spherical shell 1 is in contact with the water W. The temperature of the shell 1 is reduced by heat exchange with the water 1W, and thus the reduction in power generation efficiency due to the high temperature of the solar cell is suppressed. Further, when the solar radiation is strong in summer or the like, the water shell W is jetted from the top of the bulb shell 1 to the outer peripheral surface by the operation of the submersible pump 7, and the bulb shell is obtained by heat exchange with the water and heat of vaporization caused by water evaporation. 1 can be cooled, it is possible to reliably prevent the spherical shell 1 from being destroyed due to the expansion of the internal gas, and to avoid a decrease in power generation efficiency due to the high temperature inside the spherical shell 1. In general, it is said that a solar cell causes an output decrease of about 20% at a normal temperature at a temperature of 70 ° C.

  On the other hand, in this floating solar power generation apparatus, since the setting of the orientation of the entire solar panel 3 is performed by the radial movement of the direction setting weight 28 and the turning movement of the turning body 21, the structure of the operation part is very simple. In addition, since the solar cell array is protected by the spherical shell 1 and the protective casing of the solar panel 3 itself is omitted, there is an advantage that it can be manufactured at a low cost and is less likely to cause a failure. In addition, since the attitude control by the controller 22 is performed based on the output difference of the four solar panels 3..., No special solar direction detector such as an optical sensor is required, and the equipment cost is reduced accordingly. .

  Further, according to the attitude control method based on the output difference between the solar panels 3..., The amount of collected light including the reflected light on the water surface is automatically maximized in the time zone when the solar altitude is low in the morning and evening. The orientation of the entire solar panel 3 is set, and thereby it is possible to obtain a larger amount of power generation than a normal solar tracking system. In the above-described embodiment, four solar panels 3 are used. Similarly, in performing posture control based on the output difference, the center of the solar cell unit 2 is lowered in a gentle inclination state that lowers the center side. There should be at least three solar panels that are evenly distributed.

  The water solar power generation apparatus of the present invention can be variously modified in addition to the configuration exemplified as the above embodiment. For example, the fixed posture holding means for holding the spherical shell 1 in a non-rotating floating posture is a pair of anchoring portions 11 and 11 of the spherical shell 1 in the above-described embodiment. It is configured to be connected to the arms 5a, 5a, but if each hooking part 11 is connected to another anchor placed at a position away from the anchor 5, or if there is a fixed part such as a quay or rock in the vicinity, that part Various means can be employed such as attaching a rope or other rope on the water or water in between and securing the spherical shell 1 to the rope at a plurality of locations so as not to rotate. In addition, when arranging a plurality of floating solar power generators side by side, for example, as shown by the solid line in FIG. 6, a single rope stretched in the water W between fixed parts S, S such as a quay or a rock Two parallel ropes 83, which are fastened to the body 81 via anchoring ropes 82, 82 for arranging the spherical shells 1 in a C shape, or stretched on the water between the fixed portions S, S as shown in FIG. , 83 are directly connected to both sides of each spherical shell 1, or anchors 51, 51 with poles are arranged on the bottom of the water as shown by phantom lines in FIG. , 51 may be used as a fixed posture holding means such as connecting the spherical shells 1 to the cord 81 extending between the two.

  Further, the attitude control mechanism in the floating solar power generation apparatus of the present invention is not limited to the system that performs attitude control based on the output difference of at least three solar panels as described above, but is detected by an optical device such as an optical sensor. The attitude control is performed by driving the rotation driving means of the pinion 25a and the moving means of the direction setting weight 28 based on the sun direction, and the solar operation data for each season, month, or day in the installation location in advance. It is also possible to adopt a method of inputting and automatically performing the same attitude control based on this solar operation data. In the method of detecting the sun direction with an optical device or inputting solar operation data in advance, a single solar panel 3 may be attached to the support frame 20 of the solar cell unit 2. Thus, the controller 22 incorporating the attitude control mechanism may be attached to the spherical shell 1 side. Further, the controller 22 or a storage battery can be used as the direction setting weight 28.

  In addition, in the floating solar power generation device of the present invention, the type of inert gas that replaces the inside of the spherical shell 1, the shape of the support frame 20 and the swivel body 21 in the solar cell unit 2, the moving means of the direction setting weight 28, the sun Various design changes other than the embodiment can be made with respect to the detailed configuration such as the type of the cable body that holds the battery unit 2 and the attachment position of the submersible pump 7.

It is a vertical side view which shows the installation state of the floating solar power generation device which concerns on one Embodiment of this invention. It is a cross-sectional arrow view of the II line of FIG. It is a cross-sectional arrow view of the roll line of FIG. It is sectional drawing which shows the contact part of the spherical shell inner surface and the support frame of a solar cell unit in the same water solar power generation device. It is sectional drawing which shows the holding | maintenance state of the weight for direction setting in the turning body of the solar cell unit. It is a vertical side view which shows one structural example in the case of arrange | positioning the multiple unit of the same water solar power generation device. It is a top view which shows the other structural example in the case of arrange | positioning the multiple unit of the same water-type solar power generation device.

Explanation of symbols

1 Spherical Shell 2 Solar Cell Unit 3 Solar Panel 4 Hanging Rope (Rope)
7 Submersible pump 8 Non-rotating rope (fixed posture holding means)
14 Spherical shell balancer weight 15 Hook (inner top)
16 Water injection nozzle 20 Support frame 21 Revolving body 22 Controller (Attitude control mechanism)
23 rack gear 24 spherical roller 24a compression coil spring (spring force)
25a Drive pinion 25b Follower pinion 26a Reversible motor (rotation drive means)
26b Reversible motor (moving means)
27 Screw shaft (moving means)
28 Direction setting weight

Claims (7)

The solar cell unit is suspended in a transparent spherical shell held in a non-rotating floating posture on the water by a fixed posture holding means so that the solar cell unit can be tilted and rotated by a cord hanging from the inner top of the spherical shell at the center. Is equipped with a posture control mechanism,
The solar cell unit has a support frame that is equally distributed in the circumferential direction on the inner surface of the spherical shell, a solar panel attached to the upper surface side of the support frame, and a central portion on the lower surface side of the support frame. A revolving body pivotally mounted so as to be relatively rotatable, and an annular ring centered on a pivoting portion of the revolving body, and a rack gear fixed to the lower surface side of the support frame,
The swivel body includes a pinion meshing with the rack gear and its rotation driving means, a direction setting weight movable along the radial direction of the ring of the rack gear, and its moving means. The center of gravity associated with the radial movement of the direction setting weight and the turning movement of the swiveling body is achieved by taking an inclined attitude with the direction setting weight side as the lower position and controlling the operation of the moving means and the rotation driving means by the attitude control mechanism. A floating solar power generation apparatus configured to set an elevation angle and an azimuth angle of a solar panel by displacement.   The floating solar power generator according to claim 1, wherein the inside of the spherical shell is replaced with an inert gas.   The floating solar power generator according to claim 1 or 2, wherein the support frame is pressed against the inner surface of the spherical shell by a spherical roller biased by a spring force.   The floating solar power generator according to any one of claims 1 to 3, wherein a spherical shell balancer weight is attached to the bottom side of the spherical shell.   A submersible pump is attached to the bottom side of the spherical shell, and a water injection nozzle that injects water sent from the submersible pump toward the outer peripheral surface of the spherical shell is provided on the outer top of the spherical shell. The water solar power generation device according to any one of 4.   The floating solar power generator according to any one of claims 1 to 5, wherein the moving means includes a screw shaft screwed into the direction setting weight and a motor that rotationally drives the screw shaft. The solar cell unit is equipped with at least three solar panels with the same power generation capacity equally distributed around the center, these solar panels are gently inclined so that the center side is lowered with respect to the support frame, and the attitude control mechanism The floating solar power generator according to any one of claims 1 to 6, wherein the operation of the moving means and the rotation driving means is controlled so as to minimize an output difference of the panel.

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