WO2009045066A2 - Solar energy generating device - Google Patents

Solar energy generating device Download PDF

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Publication number
WO2009045066A2
WO2009045066A2 PCT/KR2008/005820 KR2008005820W WO2009045066A2 WO 2009045066 A2 WO2009045066 A2 WO 2009045066A2 KR 2008005820 W KR2008005820 W KR 2008005820W WO 2009045066 A2 WO2009045066 A2 WO 2009045066A2
Authority
WO
WIPO (PCT)
Prior art keywords
floating structure
cell module
solar cell
generating device
solar
Prior art date
Application number
PCT/KR2008/005820
Other languages
French (fr)
Other versions
WO2009045066A3 (en
Inventor
Do Young Woo
Original Assignee
Do Young Woo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Do Young Woo filed Critical Do Young Woo
Publication of WO2009045066A2 publication Critical patent/WO2009045066A2/en
Publication of WO2009045066A3 publication Critical patent/WO2009045066A3/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/10—Solar heat collectors using working fluids the working fluids forming pools or ponds
    • F24S10/17—Solar heat collectors using working fluids the working fluids forming pools or ponds using covers or floating solar absorbing elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/70—Waterborne solar heat collector modules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/23—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
    • H02S20/24—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures specially adapted for flat roofs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4426—Stationary floating buildings for human use, e.g. floating dwellings or floating restaurants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/4453—Floating structures carrying electric power plants for converting solar energy into electric energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S2020/10—Solar modules layout; Modular arrangements
    • F24S2020/18—Solar modules layout; Modular arrangements having a particular shape, e.g. prismatic, pyramidal
    • F24S2020/186—Solar modules layout; Modular arrangements having a particular shape, e.g. prismatic, pyramidal allowing change of position for optimization of heat collection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/13—Transmissions
    • F24S2030/133—Transmissions in the form of flexible elements, e.g. belts, chains, ropes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar energy generating device, and more particularly, to a solar energy generating device that is installed in a floating structure with a solar cell module to generate electrical energy from solar energy, where the floating structure is built for leisure on a reservoir or river.
  • a solar energy generation method directly converts solar energy into electrical energy by a solar cell. Differently from a solar heat generation method for generating energy using heat energy of sunlight, the solar energy generation method generates electrical energy directly from sunlight by the solar cell formed of semiconductors.
  • the solar energy generation method uses the solar cell that generates photoelectro-motive force by photoelectric effect when light is irradiated.
  • the solar energy generating device is comprised of a solar cell module, a battery and a power converter.
  • the solar cell such as a selenium photocell and a copper sulfite photocell that use contact between metal and semiconductor, and a silicon photocell using PN junction between semiconductors.
  • the solar energy generating device is classified into a fixed type, a fixed variable type, a single shaft type and a double shafts type according to an installation type of the solar cell module.
  • the solar cell module In the fixed type device, the solar cell module is fixedly installed to the south.
  • the device effectively generates electrical energy from solar energy in the afternoon when sunshine is plenty.
  • energy generation from sunlight irradiated on the side wall thereof is deficient.
  • energy generation efficiency is relatively low even though it is cheap.
  • the solar cell module In the fixed variable type device, the solar cell module is fixed to the south. The angle of the solar cell module is changed by several times in a year. In the single shaft type device, the angle of the solar cell module is changed from the east to the west with the lapse of time.
  • the solar cell module is automatically tilted along the trace of the sun by using an additional sensor.
  • an object of the present invention is to provide a solar energy generating device that is installed in a floating structure with a solar cell module to generate electrical energy by using solar energy, where the electrical energy is supplied to leisure facilities and the solar cell module is a fixed type. Accordingly, energy generation efficiency is as high as efficiency of the single shaft type device and economical effect can be obtained by surplus electricity.
  • a solar energy generating device installed in a floating structure that can simultaneously provide services for leisure facility, theater, cafe and lodging on the water, which includes: a solar cell module including a plurality of solar cells to convert sunlight energy into electrical energy, where the solar cells are connected to each other on the floating structure; an actuator unit, provided at the floating structure, rotating the floating structure along the trace of the sun so as to keep the solar cell module perpendicular to the sun; and a controller controlling the actuator unit to rotate the floating structure to the optimal position along the trace of the sun, thereby allowing the solar cell module to generate electrical energy most efficiently.
  • the solar cell module may be installed on a ceiling structure of the floating structure or on a side wall of the ceiling structure.
  • the actuating unit may include a wire whose one end is connected to a fixing bar anchored in the water and the other end is wound in several turns on a roller provided at the floating structure, and a driving motor capable of reversely rotating about a motor shaft connected to the roller, where the fixing bar is spaced outward from the floating structure.
  • the controller may rotate the floating structure by outputting a control signal to the actuating unit hourly.
  • the solar energy generating device produces following effects.
  • the solar energy generating device does not require additional sensor and accessories to operate the solar cell module because the solar cell module is the fixed type.
  • a user can use leisure facilities and simultaneously supply electricity obtained from solar energy to facilities provided in the floating structure and obtain economical profit by selling surplus electricity.
  • FIG. 1 is a view illustrating a solar energy generating device installed on a floating structure according to the present invention
  • FIGS. 2 to 5 are views illustrating operating states of the floating structure
  • FIG. 6 is a graph illustrating comparison result of generation capacities between the solar energy generating device of the present invention and a conventional solar energy generating device
  • FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
  • FIG. 1 is a view illustrating the solar energy generating device installed on the floating structure according to the present invention
  • FIGS. 2 to 5 are views illustrating operating states of the floating structure
  • FIG. 6 is a graph illustrating comparison result of generation capacities between the solar energy generating device of the present invention and a conventional solar energy generating device
  • FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
  • a solar cell module 100 is installed on a floating structure 2 on the water, where a leisure facility, a theater, a cafe and lodging are simultaneously provided on the floating structure 2, and the solar cell module 100 is constituted of mutually connected solar cells to convert sunlight energy into electrical energy.
  • the floating structure 2 may have a rectangular, oval or circular shape, but not limited thereto.
  • the number of the solar cell module 100 may be variously changed depending on a size of the floating structure 2.
  • An actuating unit 200 is provided at the floating structure 2 in order to rotate the floating structure 2 along the trace of the sun, thereby keeping the solar cell module 100 in perpendicular to the sun 3.
  • the actuating unit 200 includes a wire 210 whose one end is connected to a fixing bar 10 anchored in the water and the other end is wound in several turns on a roller 202 provided at the floating structure, and a driving motor 220 capable of reversely rotating about a motor shaft connected to the roller 202, where the fixing bar is spaced outward from the floating structure 2.
  • the wire 210 is connected to the fixing bar 10 and wound on the rollers 202 that are provided widthwise at both sides of the floating structure 2.
  • the wire 210 wound on the roller 202 of the actuating unit 200 is extended by at least tens of meters outward from the floating structure 2 and fixed to the fixing bar 10.
  • a controller 300 is provided to control the actuator unit 200 that rotates the floating structure 2 to the optimal position along the trace of the sun 3, thereby allowing the solar cell module 100 to generate electrical energy most efficiently.
  • the controller 300 receives and controls generation capacity of each solar cell module 100.
  • the controller performs general control about r.p.m of the driving motor 220 and a driving direction of the motor shaft of the driving motor 220.
  • the solar cell module 100 is installed on a ceiling structure 20 on the floating structure 2 or on a side wall of the ceiling structure 20.
  • the controller 300 rotates the floating structure 2 by outputting a control signal to the actuating unit 200 hourly.
  • the floating structure 2 located on a lake, river or reservoir is a multifunctional complex leisure facility on the water that can provide services for water skiing, theater, cafe and lodging. Tens to hundreds of persons may simultaneously board on the floating structure 2 and enjoy leisure on the water or various uses.
  • the floating structure 2 is a two-storied structure, but not limited thereto.
  • the floating structure 2 may be constructed in a multi-storied structure.
  • the solar cell module 100 of the floating structure 2 is first located to the south. In other words, the solar cell module 100 is fixed on the ceiling structure 20. Referring to FIG. 2, when the sun 3 (See FIG. 1) rises and thus sunlight is not perpendicular to the solar cell module 100, the generation capacity of the solar cell module 100 is reduced. Accordingly, the whole floating structure 2 should be rotated to the east on the water.
  • the sun 3 rises from the east in the morning.
  • the controller 300 operates the actuating unit 200 so as to locate the solar cell module 100 in perpendicular to the sun 3.
  • the wire 210 is connected to the single fixing bar 10 in a branch type. Accordingly, the floating structure 2 is rotated by pulling the wire at one side and unwinding the wire at the other side.
  • the controller 300 rotates the motor shaft by applying an operation signal to the driving motor 220 of the actuating unit 200.
  • the roller 202 is rotated with the rotation of the driving motor
  • the wires 210, 210' 210" and 210'" wound on the roller 202 are pulled or unwound in directions different from each other.
  • the wire 210 is unwound toward the fixing bar 10 in the direction of a dotted arrow and other wire 210' is wound in the direction of the arrow by the driving motor 220.
  • the wire 210" is pulled in the direction of the dotted arrow and the wire 210'" is unwound in the direction of the dotted arrow. Accordingly, the whole floating structure 2 is rotated to the east on the water in the direction of arrows drawn by thick solid lines at the right and left to the floating structure 2.
  • the floating structure 2 when the floating structure 2 is rotated to the east, sunlight is irradiated to the solar cell module 100 at the angle of ⁇ 1 between the solar cell module 100 and sun 3.
  • the angle of ⁇ 1 is about 90 degrees, electrical energy is generated from sunlight by the solar cell 110 provided in the solar cell module 100. More electrical energy is generated rather than in the first position of the floating structure 2.
  • the floating structure 2 is rotated to the east at once. However, the floating structure 2 may be rotated to the optimal position hourly by the controller 300.
  • the floating structure 2 is rotated along the sun 3. Accordingly, a passenger (not shown) boarded on the floating structure 2 can enjoy various sights around the floating structure comfortably.
  • the solar cell module 100 may be installed on the ceiling structure 20, or may be installed on the side wall of the ceiling structure in order to perform electrical energy generation using sunlight irradiated to the side wall. As shown in FIG. 4, when the sun moves to the west with the lapse of time, the floating structure 2 should be rotated along the sun.
  • the controller 300 rotates the motor shaft by applying an operation signal to the driving motor 220 of the actuating unit 200.
  • the roller 202 is rotated with the rotation of the driving motor 220 and the wires 210, 210' 210" and 210'" wound on the roller 202 are pulled or unwound in directions different from each other.
  • the wire 210 is wound in the direction of a dotted arrow and other wire 210'is unwound toward the fixing bar 10.
  • the wire 210" is unwound in the direction of the dotted arrow and the wire 210'" is pulled in the direction of the dotted arrow. Accordingly, the whole floating structure 2 is rotated to the west on the water in the direction of arrows shown by thick solid lines at the right and left to the floating structure 2.
  • generation capacities of the fixed type device are assumed to be 100%
  • generation capacities of the fixed variable type device, solar energy generating device of the present invention, and single shaft type device are 104%, 113% and 115% respectively.
  • the generation capacity of the most excellent double shafts type device is 125%.
  • FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
  • the solar cell module 100 can be used in the fixed type as described above.
  • the angle between the device and sun can be adjusted according to the season or quarter year and the generation capacity is larger than the single shaft type device and less than the double shafts type.
  • the solar energy generating device has larger generation capacity and generates much more surplus electricity compared than the fixed type device.

Abstract

Disclosed is a solar energy generating device installed in a floating structure that can simultaneously provide services for leisure facility, theater, cafe and lodging on the water, which uses a solar cell module to convert sunlight energy irradiated on the floating structure into electrical energy. The floating structure can be rotated hourly on the water along the sun without additional tilting device and sensor to tilt the solar cell module. Accordingly, the solar energy generating device can provide an optimal rest place to a passenger and generate electricity through the solar cell module and supply electricity to the leisure facility, theater and cafe. In addition, a user can obtain economical profit by selling surplus electricity.

Description

SOLAR ENERGY GENERATING DEVICE
Technical Field
The present invention relates to a solar energy generating device, and more particularly, to a solar energy generating device that is installed in a floating structure with a solar cell module to generate electrical energy from solar energy, where the floating structure is built for leisure on a reservoir or river.
Background Art
Generally, a solar energy generation method directly converts solar energy into electrical energy by a solar cell. Differently from a solar heat generation method for generating energy using heat energy of sunlight, the solar energy generation method generates electrical energy directly from sunlight by the solar cell formed of semiconductors.
The solar energy generation method uses the solar cell that generates photoelectro-motive force by photoelectric effect when light is irradiated. Generally, the solar energy generating device is comprised of a solar cell module, a battery and a power converter. In addition, there are various kinds of the solar cell such as a selenium photocell and a copper sulfite photocell that use contact between metal and semiconductor, and a silicon photocell using PN junction between semiconductors.
The solar energy generating device is classified into a fixed type, a fixed variable type, a single shaft type and a double shafts type according to an installation type of the solar cell module.
In the fixed type device, the solar cell module is fixedly installed to the south. The device effectively generates electrical energy from solar energy in the afternoon when sunshine is plenty. However, energy generation from sunlight irradiated on the side wall thereof is deficient. In addition, energy generation efficiency is relatively low even though it is cheap.
In the fixed variable type device, the solar cell module is fixed to the south. The angle of the solar cell module is changed by several times in a year. In the single shaft type device, the angle of the solar cell module is changed from the east to the west with the lapse of time.
In the double shafts type device, the solar cell module is automatically tilted along the trace of the sun by using an additional sensor.
Energy generation efficiency of the device is increased in the order of the fixed type, fixed variable type, single shaft type and double shafts type. However, the installation cost is increased in the reverse order. Accordingly, there has been demanded a solar energy generating device of high efficiency and low installation cost.
Disclosure
Technical Problem
Accordingly, an object of the present invention is to provide a solar energy generating device that is installed in a floating structure with a solar cell module to generate electrical energy by using solar energy, where the electrical energy is supplied to leisure facilities and the solar cell module is a fixed type. Accordingly, energy generation efficiency is as high as efficiency of the single shaft type device and economical effect can be obtained by surplus electricity.
Technical Solution
According to an aspect of the present invention, there is provided a solar energy generating device installed in a floating structure that can simultaneously provide services for leisure facility, theater, cafe and lodging on the water, which includes: a solar cell module including a plurality of solar cells to convert sunlight energy into electrical energy, where the solar cells are connected to each other on the floating structure; an actuator unit, provided at the floating structure, rotating the floating structure along the trace of the sun so as to keep the solar cell module perpendicular to the sun; and a controller controlling the actuator unit to rotate the floating structure to the optimal position along the trace of the sun, thereby allowing the solar cell module to generate electrical energy most efficiently.
The solar cell module may be installed on a ceiling structure of the floating structure or on a side wall of the ceiling structure.
The actuating unit may include a wire whose one end is connected to a fixing bar anchored in the water and the other end is wound in several turns on a roller provided at the floating structure, and a driving motor capable of reversely rotating about a motor shaft connected to the roller, where the fixing bar is spaced outward from the floating structure.
The controller may rotate the floating structure by outputting a control signal to the actuating unit hourly.
Advantageous Effects
As described above, the solar energy generating device according to the present invention produces following effects.
First, the solar energy generating device does not require additional sensor and accessories to operate the solar cell module because the solar cell module is the fixed type.
Second, sunshine is irradiated at an optimal angle between the solar cell module and sun, thereby improving generation efficiency.
Third, a user can use leisure facilities and simultaneously supply electricity obtained from solar energy to facilities provided in the floating structure and obtain economical profit by selling surplus electricity.
Brief Description of Drawings
FIG. 1 is a view illustrating a solar energy generating device installed on a floating structure according to the present invention;
FIGS. 2 to 5 are views illustrating operating states of the floating structure; FIG. 6 is a graph illustrating comparison result of generation capacities between the solar energy generating device of the present invention and a conventional solar energy generating device; and
FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
Mode for Invention
A solar energy generating device installed on a floating structure according to the present invention will be explained below with reference to accompanying drawings. FIG. 1 is a view illustrating the solar energy generating device installed on the floating structure according to the present invention and FIGS. 2 to 5 are views illustrating operating states of the floating structure and FIG. 6 is a graph illustrating comparison result of generation capacities between the solar energy generating device of the present invention and a conventional solar energy generating device and FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
Referring to FIG. 1 , a solar cell module 100 is installed on a floating structure 2 on the water, where a leisure facility, a theater, a cafe and lodging are simultaneously provided on the floating structure 2, and the solar cell module 100 is constituted of mutually connected solar cells to convert sunlight energy into electrical energy.
As shown in FIG. 1 , the floating structure 2 may have a rectangular, oval or circular shape, but not limited thereto. The number of the solar cell module 100 may be variously changed depending on a size of the floating structure 2.
An actuating unit 200 is provided at the floating structure 2 in order to rotate the floating structure 2 along the trace of the sun, thereby keeping the solar cell module 100 in perpendicular to the sun 3. The actuating unit 200 includes a wire 210 whose one end is connected to a fixing bar 10 anchored in the water and the other end is wound in several turns on a roller 202 provided at the floating structure, and a driving motor 220 capable of reversely rotating about a motor shaft connected to the roller 202, where the fixing bar is spaced outward from the floating structure 2. The wire 210 is connected to the fixing bar 10 and wound on the rollers 202 that are provided widthwise at both sides of the floating structure 2. The wire 210 wound on the roller 202 of the actuating unit 200 is extended by at least tens of meters outward from the floating structure 2 and fixed to the fixing bar 10.
In addition, a controller 300 is provided to control the actuator unit 200 that rotates the floating structure 2 to the optimal position along the trace of the sun 3, thereby allowing the solar cell module 100 to generate electrical energy most efficiently. The controller 300 receives and controls generation capacity of each solar cell module 100. The controller performs general control about r.p.m of the driving motor 220 and a driving direction of the motor shaft of the driving motor 220. The solar cell module 100 is installed on a ceiling structure 20 on the floating structure 2 or on a side wall of the ceiling structure 20.
The controller 300 rotates the floating structure 2 by outputting a control signal to the actuating unit 200 hourly.
Operation of the solar energy generating device provided at the floating structure will be explained below with reference to accompanying drawings.
Referring to FIGS. 1 and 2, the floating structure 2 located on a lake, river or reservoir is a multifunctional complex leisure facility on the water that can provide services for water skiing, theater, cafe and lodging. Tens to hundreds of persons may simultaneously board on the floating structure 2 and enjoy leisure on the water or various uses. The floating structure 2 is a two-storied structure, but not limited thereto. The floating structure 2 may be constructed in a multi-storied structure.
The solar cell module 100 of the floating structure 2 is first located to the south. In other words, the solar cell module 100 is fixed on the ceiling structure 20. Referring to FIG. 2, when the sun 3 (See FIG. 1) rises and thus sunlight is not perpendicular to the solar cell module 100, the generation capacity of the solar cell module 100 is reduced. Accordingly, the whole floating structure 2 should be rotated to the east on the water.
The sun 3 rises from the east in the morning. Thus, the controller 300 operates the actuating unit 200 so as to locate the solar cell module 100 in perpendicular to the sun 3. The wire 210 is connected to the single fixing bar 10 in a branch type. Accordingly, the floating structure 2 is rotated by pulling the wire at one side and unwinding the wire at the other side.
To operate the floating structure as described above, the controller 300 rotates the motor shaft by applying an operation signal to the driving motor 220 of the actuating unit 200. The roller 202 is rotated with the rotation of the driving motor
220 and the wires 210, 210' 210" and 210'" wound on the roller 202 are pulled or unwound in directions different from each other. As shown in FIG. 2, the wire 210 is unwound toward the fixing bar 10 in the direction of a dotted arrow and other wire 210' is wound in the direction of the arrow by the driving motor 220.
Simultaneously, the wire 210" is pulled in the direction of the dotted arrow and the wire 210'" is unwound in the direction of the dotted arrow. Accordingly, the whole floating structure 2 is rotated to the east on the water in the direction of arrows drawn by thick solid lines at the right and left to the floating structure 2. Referring to FIG. 3, when the floating structure 2 is rotated to the east, sunlight is irradiated to the solar cell module 100 at the angle of Θ1 between the solar cell module 100 and sun 3. When the angle of Θ1 is about 90 degrees, electrical energy is generated from sunlight by the solar cell 110 provided in the solar cell module 100. More electrical energy is generated rather than in the first position of the floating structure 2. In the embodiment, the floating structure 2 is rotated to the east at once. However, the floating structure 2 may be rotated to the optimal position hourly by the controller 300.
As described above, the floating structure 2 is rotated along the sun 3. Accordingly, a passenger (not shown) boarded on the floating structure 2 can enjoy various sights around the floating structure comfortably. As described above, the solar cell module 100 may be installed on the ceiling structure 20, or may be installed on the side wall of the ceiling structure in order to perform electrical energy generation using sunlight irradiated to the side wall. As shown in FIG. 4, when the sun moves to the west with the lapse of time, the floating structure 2 should be rotated along the sun.
To operate the floating structure as described above, the controller 300 rotates the motor shaft by applying an operation signal to the driving motor 220 of the actuating unit 200. The roller 202 is rotated with the rotation of the driving motor 220 and the wires 210, 210' 210" and 210'" wound on the roller 202 are pulled or unwound in directions different from each other. As shown in FIG. 4, the wire 210 is wound in the direction of a dotted arrow and other wire 210'is unwound toward the fixing bar 10.
Simultaneously, the wire 210" is unwound in the direction of the dotted arrow and the wire 210'" is pulled in the direction of the dotted arrow. Accordingly, the whole floating structure 2 is rotated to the west on the water in the direction of arrows shown by thick solid lines at the right and left to the floating structure 2.
Referring to FIG. 5, when the floating structure 2 is rotated to the west, sunlight is irradiated to the solar cell module 100 at the angle of Θ2 between the solar cell module 100 and sun 3. When the angle of Θ2 is about 90 degrees, electrical energy is generated from sunlight by the solar cell 110 provided in the solar cell module 100. More electrical energy is generated rather than in the first position of the floating structure 2. Electricity generated by the solar cell module 100 as described above is converted into electrical power usable in the leisure facility, theater and cafe, and supplied thereto. Surplus electricity is converted into generally used alternating current through an additional converter (not shown) and supplied to a facility that needs electrical energy. Comparison result of generation capacities between the solar energy generating device of the present invention and a conventional solar energy generating device will be explained below with reference to FIG. 6.
As shown in FIG. 6, when a generation capacity of the fixed type device is assumed to be 100%, generation capacities of the fixed variable type device, solar energy generating device of the present invention, and single shaft type device are 104%, 113% and 115% respectively. The generation capacity of the most excellent double shafts type device is 125%.
Accordingly, the solar energy generating device installed in the floating structure is the fixed type device and has the generation capacity similar to the single shaft type device. Thus, the solar energy generating device is more efficient. FIG. 7 is a graph illustrating comparison result of generation capacities between a solar energy generating device according to another embodiment of the present invention and a conventional solar energy generating device.
Referring to FIG. 7, the solar cell module 100 can be used in the fixed type as described above. When the solar cell module is changed into the fixed variable type device and the floating structure 2 is rotated hourly, the angle between the device and sun can be adjusted according to the season or quarter year and the generation capacity is larger than the single shaft type device and less than the double shafts type. In other words, the solar energy generating device has larger generation capacity and generates much more surplus electricity compared than the fixed type device.

Claims

1. A solar energy generating device installed in a floating structure that simultaneously provides services for leisure facility, theater, cafe and lodging on the water, comprising: a solar cell module including a plurality of solar cells to convert sunlight energy into electrical energy, where the solar cells are connected to each other on the floating structure; an actuator unit, provided at the floating structure, rotating the floating structure along the trace of the sun so as to keep the solar cell module perpendicular to the sun; and a controller controlling the actuator unit to rotate the floating structure to the optimal position along the trace of the sun, thereby allowing the solar cell module to generate electrical energy most efficiently.
2. The solar energy generating device of claim 1 , wherein the solar cell module is installed on a ceiling structure of the floating structure or on a side wall of the ceiling structure.
3. The solar energy generating device of claim 1 , wherein the actuating unit comprises a wire whose one end is connected to a fixing bar anchored in the water and the other end is wound in several turns on a roller provided at the floating structure, and a driving motor capable of reversely rotating about a motor shaft connected to the roller, where the fixing bar is spaced outward from the floating structure.
4. The solar energy generating device of claim 1 , wherein the controller rotates the floating structure by outputting a control signal to the actuating unit hourly.
PCT/KR2008/005820 2007-10-04 2008-10-02 Solar energy generating device WO2009045066A2 (en)

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KR2020070016195U KR200442088Y1 (en) 2007-10-04 2007-10-04 Solar Energy Generating Device

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KR100942904B1 (en) * 2009-04-08 2010-02-16 우도영 Float type solar energy generating device
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