WO2019172708A1 - 파력발전 시스템 및 그 제어 방법 - Google Patents
파력발전 시스템 및 그 제어 방법 Download PDFInfo
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- WO2019172708A1 WO2019172708A1 PCT/KR2019/002729 KR2019002729W WO2019172708A1 WO 2019172708 A1 WO2019172708 A1 WO 2019172708A1 KR 2019002729 W KR2019002729 W KR 2019002729W WO 2019172708 A1 WO2019172708 A1 WO 2019172708A1
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- hydraulic
- tension
- fluid
- power generation
- generation system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1845—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem
- F03B13/1855—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem where the connection between wom and conversion system takes tension and compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1845—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem
- F03B13/1865—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem where the connection between wom and conversion system takes tension only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/91—Mounting on supporting structures or systems on a stationary structure
- F05B2240/917—Mounting on supporting structures or systems on a stationary structure attached to cables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/95—Mounting on supporting structures or systems offshore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/406—Transmission of power through hydraulic systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/50—Kinematic linkage, i.e. transmission of position
- F05B2260/504—Kinematic linkage, i.e. transmission of position using flat or V-belts and pulleys
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- 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
- Y02E10/20—Hydro energy
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Definitions
- the following description relates to a wave power generation system and a method of controlling the system.
- power generation methods for generating electricity include hydropower, thermal power generation, nuclear power generation, etc. These power generation methods require large-scale power generation facilities.
- thermal power generation a huge amount of oil or coal energy must be supplied in order to operate a power plant, and thus, many difficulties are anticipated at the present time when oil and coal resources are depleted, and pollution is a big problem. have.
- nuclear power generation radioactive leakage and nuclear waste treatment have serious problems.
- hydroelectric power generation since there is a drop in water, large-scale dams must be constructed, which not only causes changes in the surrounding environment, but also causes environmental constraints such as construction of a river with abundant water resources. . Therefore, a revolutionary power generation method that is cheaper, safer, and more environmentally friendly than such a general power generation method is required, and one of them is wave power generation that can generate electric power using the movement of waves.
- wave power generation is a technology for generating electric power by using a constantly generated wave movement, it is possible to continuously produce energy.
- the wave power generation converts the periodic vertical motion of the sea surface caused by the waves and the forward and backward motion of the water particles into mechanical rotational or axial motion through an energy converter, and then into electric power.
- the wave power generation method can be classified into various types according to the method of firstly converting the energy according to the height of the crest and the representative one, and the generator is operated as the buoy floating on the water moves up or down by the wave movement. There is an animal-like way.
- a method of generating an object moving according to the movement of a wave for example, a buoy, is generated through a generator after converting it into a reciprocating or rotational motion, for example, Korean Patent Publication No. 2015-00120896 or Japanese Patent No. 5260092 is disclosed.
- the irregular kinetic energy is provided due to the characteristics of the wave, so to produce energy stably using this, the kinetic transmission part transmitting the wave energy and the equalizer converting the received kinetic energy into rotational kinetic energy used for power generation are effective. There is a need for a system and control method capable of producing the same.
- the wave power generation system the tension transmission member for transmitting the kinetic energy generated by the six degree of freedom movement of the floating animal body in the wave, connected to the tension transmission member And an equalizer configured to maintain the tension of the tension transmission member by being connected to the power transmission unit including a hydraulic pressure generating unit for generating hydraulic pressure.
- the power converter converts the fluid in the first direction by the tension, and when the tension is not applied from the tension transfer member, the hydraulic pressure is applied by the equalizer.
- the generator flows the fluid in the second direction.
- It may include a second hydraulic circuit and a rectifying circuit provided between the first hydraulic circuit and the second hydraulic circuit to change the direction of the fluid.
- the rectifier circuit switches the flow direction of the fluid when the fluid flows in a second direction opposite to that when the fluid flows in the first direction in the first hydraulic circuit, thereby changing the flow direction of the fluid in the same direction in the second hydraulic circuit. Fluid may be allowed to flow.
- the rectifier circuit may include a plurality of branch flow paths disposed in a bridge shape, and check valves may be provided on the plurality of branch flow paths, respectively. Further, in the rectifier circuit, check valves on the branch flow paths facing each other may be disposed in the same direction, and check valves on the branch flow paths adjacent to each other may be disposed in opposite directions.
- the hydraulic generating unit and the hydraulic driving unit may each be a hydraulic motor.
- the second hydraulic circuit may be provided with a high pressure side accumulator and a low pressure side accumulator before and after the hydraulic drive unit.
- the second hydraulic circuit may include a plurality of check valves, and the check valves may be provided before and after the hydraulic driving unit.
- the equalizer may include any one of a hydraulic motor, a hydraulic pump, a hydraulic cylinder, an electric motor, a gas spring, a mechanical spring.
- the tension transmission member is connected to three or more positions of the animal body may be provided with a plurality.
- the transducer is coupled to the plurality of tension transfer member is provided, the power converter is provided on one side of the converter, the equalizer may be provided on the other side of the converter. Equalizers may be provided in the plurality of tension transmitting members, respectively, or the plurality of tension transmitting members may be connected to one equalizer.
- the speed increaser may be provided between the converter and the power converter.
- the speed increaser may be formed with a gear ratio lower than a predetermined reference.
- the wave power generation system floating in the waves, moving animal by the waves, at least three of the animal body to enable six degrees of freedom movement of the animal body
- a movement transmission unit including a plurality of tension transmission members connected to at least one position to transfer the kinetic energy of the animal body in one direction, a converter to which the plurality of tension transmission members are connected, and provided on one side of the converter It is configured to include an equalizer, which is provided on the other side of the converter to generate a hydraulic pressure, and a power production unit connected to the power converter to produce power.
- an equalizer which is provided on the other side of the converter to generate a hydraulic pressure
- a power production unit connected to the power converter to produce power.
- the power conversion unit a hydraulic pressure generating unit connected to the tension transmission member for generating a hydraulic pressure
- a hydraulic drive unit connected to the power production unit
- a first hydraulic circuit for flowing a fluid to the hydraulic pressure generating unit
- the hydraulic pressure It may include a second hydraulic circuit for flowing a fluid to the drive unit and a rectifying circuit provided between the first hydraulic circuit and the second hydraulic circuit to change the direction of the fluid.
- the rectifier circuit switches the flow direction of the fluid when the fluid flows in a second direction opposite to that when the fluid flows in the first direction in the first hydraulic circuit, thereby changing the flow direction of the fluid in the same direction in the second hydraulic circuit. Fluid may be allowed to flow.
- the second hydraulic circuit may be provided with a high pressure side accumulator and a low pressure side accumulator before and after the hydraulic drive unit.
- the equalizer may include any one of a hydraulic motor, a hydraulic pump, a hydraulic cylinder, an electric motor, a gas spring, a mechanical spring.
- the control method of the wave power generation system the power converter is applied when the tension is applied through the tension transmission member by the six degree of freedom movement of the floating animal body in the wave If the fluid flows in the first direction, and the rectifier circuit of the power converter flows the fluid flowing in the first direction to the hydraulic drive unit, and no tension is applied to the tension transmitting member, the power converter converts the fluid by an equalizer. Flow in the second direction, the rectifier circuit changes the direction of the fluid flowing in the second direction to flow to the hydraulic drive unit, by the two-way movement of the tension transfer member in the power production unit connected to the hydraulic drive unit Alternately, power is produced.
- the accumulator absorbs energy and operates the power generation unit using the absorbed energy, it is possible to maintain a constant quality of electricity generated in the power generation unit by the smoothing effect.
- the rectifier circuit may replace the role of the one-way clutch.
- FIG. 1 is a conceptual diagram of a wave power generation system according to an embodiment.
- FIG. 2 and 3 are block diagrams for explaining the configuration and operation of the wave power generation system of FIG.
- first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be “connected”, “coupled” or “connected”.
- FIG. 1 is a schematic diagram of a wave power generation system 10 according to an embodiment
- FIGS. 2 to 3 are block diagrams for explaining the configuration and operation of the wave power generation system 10 of FIG. 1.
- the wave power generation system 10 is configured to include the animal body 110, the motion transmission unit 120, the converter 130, the equalizer 140 and the power production unit 160.
- the animal body 110 floats on the wave and moves in six degrees of freedom according to the movement of the wave.
- the animal body 110 performs a shift, surge, or sway along the x, y, and z axes according to the movement of the wave, or rotates the yaw, the pitch, and the roll. By doing this, you will have a total of 6 degrees of freedom.
- the animal body 110 is formed to move in accordance with the movement of the wave while floating in the wave, buoy or buoy.
- the animal body 110 is configured to include a coupling portion 112 is coupled to the body 111 and the exercise transmission unit 120 is formed to float in the wave.
- the body 111 of the animal body 110 may be formed in various shapes, for example, may be disk-shaped or tubular, and may have various shapes such as a cylinder, a polygonal column, a dome shape, and a disk shape.
- Body 111 is composed of a disk shape by the shape, shape, material, function, characteristics, effects, coupling relationship of each, but is not limited to this may be configured in a variety of shapes.
- the body 111 is sufficient if the material is a material that can be suspended in the wave, but is not limited thereto.
- Coupling portion 112 is formed so that the exercise transmission unit 120 is coupled to the body 111, for example, it may have a ball joint shape having a motion angle of 360 degrees. Coupling portion 112 is coupled so that the animal body 110 can move freely within a certain range in a multi-direction according to the movement of the wave, the six degree of freedom of the animal body 110 to transmit the movement of the body 111 It is coupled to at least three different places. However, this is only an example, and the coupling part 112 is coupled to the exercise transmission unit 120 in various ways such that the animal body 110 can freely move within a limited range by being coupled to the animal body 110. It is possible. In addition, the position of the coupling portion 112 is not limited by the drawings, and at various positions of the body 111 may be freely flow within the predetermined range while preventing the animal body 110 from being separated from the predetermined range. The location can be changed in various ways.
- the coupling part 112 has a partition wall shape formed in a vertical direction on the lower portion of the body 111.
- the coupling part 112 is formed perpendicular to the horizontal plane so that the animal body 110 can be actively linked to the movement of the wave, so that the force of the wave acts vertically on the coupling part 112 to the movement of the wave. This allows the animal body 110 to move more efficiently.
- the coupling part 112 may allow the animal body 110 to receive the force of the wave in all directions, and the movement or energy of the wave may be efficiently transmitted to the movement of the animal body 110. It can be configured to be.
- the exercise transmission unit 120 is coupled to the animal body 110, the tension transmission member 121 for transmitting the movement of the animal body 110, and the fixing member 122 for fixing the tension transmission member 121 to the seabed, etc. It includes.
- the tension transmitting member 121 converts a multi-directional movement caused by the wave of the animal body 110 into a linear reciprocating motion and applies tension to the transforming body 130.
- the tension transmitting member 121 has a predetermined wire shape, one end of which is coupled to the animal body 110 and the other end of which is connected to the converter 130.
- the tension transmitting member 121 may be a rope, a chain, a sprocket, a belt, or the like.
- the tension transmitting member 121 may use various means for connecting the animal body 110 and the converter 130 and transmitting the kinetic energy of the animal body 110.
- the tension transfer member 121 is in conjunction with the six degrees of freedom of movement of the animal body 110, the tension transmission member 121 can transmit in response to all movements of the animal body 110, the animal body 110 efficiently The multi-directional motion of can be transmitted to the power converter 150.
- the tension transmission member 121 is connected at three or more positions of the animal body 110, while preventing the animal body 110 from being separated from a certain range, and at the same time, the animal body 110 freely within a certain range By allowing the flow, it is to serve to efficiently transfer the kinetic energy of the animal body (110).
- the tension transmitting member 121 is a portion receiving the force when the animal body 110 receives the force in one direction while the animal body 110 floats the sea surface with the force in the multi-direction by the wave.
- the tension transmission member 121 of the tension is transferred to the transducer 130 by the tension transmission member 121.
- the tension transmission member 121 of the portion receiving the force in the animal body 110 is pulled again by the tension acting on the tension transmission member 121
- Tension is transmitted to 130.
- the plurality of tension transmission member 121 connected to a plurality of places of the animal body 110 moves in multiple directions Will make a reciprocating linear motion.
- the kinetic energy of the animal body 110 is transmitted to the transducer 130 in the form of tension.
- the fixing member 122 is installed at the seabed or elsewhere to fix the tension transmitting member 121, and serves to change the direction of the tension transmitting member 121. That is, the tension transmitting member 121 is moved within a predetermined range with the fixing member 122 as the central axis.
- the fixing member 122 is provided at a plurality of positions at least one or more along the longitudinal direction of one tension transmitting member 121.
- the fixing member 122 is provided at a position for changing the direction of the tension transmitting member 121 to change the direction of force transmission by changing the direction of the tension transmitting member 121.
- the fixing member 122 includes a plurality of rollers or pulleys.
- the transducer 130 is connected to the plurality of tension transmitting members 121, and has a form of a rotating shaft or a drum for converting the reciprocating linear motion of the tension transmitting member 121 into a rotational motion in one direction.
- the converter 130 includes a one way clutch to convert the reciprocating linear motion of the tension transmitting member 121 into a rotational motion in one direction.
- this is only an example, and the converting body 130 may use various means substantially as long as it can convert the movement of the tension transmitting member 121 into a reciprocating rotational motion or a reciprocating linear motion.
- the equalizer 140 is connected to one side of the converter 130, and the power converter 150 and the power production unit 160 are connected to the other side.
- An increaser 131 is provided between the converter 130 and the power converter 150 to increase the low speed rotation of the converter 130 at a high speed.
- the speed increaser 131 is formed at a low gear ratio to increase the low speed rotation of the converter 130 at a predetermined high speed rotation.
- a speed increaser may also be provided between the converter 130 and the equalizer 140.
- the tension transmitting member 121 since the tension transmitting member 121 is in the form of a wire, the tension transmitting member 121 cannot apply tension to the converter 130 unless it is pulled from the animal body 110. That is, when moving in one direction according to the movement of the animal body 110, the tension transfer member 121 is pulled while the tension is applied to the transducer 130, when moving in the opposite direction is relaxed to the tension transfer member 121 to convert the No force is applied to 130. In the present embodiment, when the tension is not applied to the tension transmitting member 121, the equalizer 140 maintains the tension of the converter 130 so that power can be produced in the power production unit 160.
- the equalizer 140 is provided on one side of the converter 130, for example, the equalizer 140 may be any one of a hydraulic motor, a hydraulic pump, a hydraulic cylinder, an electric motor, a gas spring, a mechanical spring, and a flywheel. have.
- the equalizer 140 stores the tension applied by the tension transmitting member 121 as a predetermined energy. When tension is not applied to the tension transmitting member 121, energy stored in the equalizer 140 maintains the tension of the tension transmitting member 121 through the converter 130.
- the equalizer 140 is a hydraulic motor, a hydraulic pump, a hydraulic cylinder is stored in the form of hydraulic pressure, an electric motor is stored in the rotational energy of the motor, gas spring or mechanical spring is stored in the form of elastic energy, Flywheels can be stored as inertial energy.
- this is merely an example, and the shape of the equalizer 140 may be changed in various ways.
- the power converter 150 includes a hydraulic generator 151 for generating hydraulic pressure, a hydraulic driver 152 connected to the power generator 160, and a rectifier circuit 530 for changing the direction of the fluid. And a first hydraulic circuit 510 for flowing a fluid to the hydraulic pressure generating unit 151 and a second hydraulic circuit 520 for flowing a fluid to the hydraulic driving unit 152.
- the oil pressure generating unit 151 generates oil pressure by the tension applied from the tension transmitting member 121.
- the hydraulic pressure generating unit 151 is a hydraulic motor.
- the hydraulic drive unit 152 is connected to the power generation unit 160, the hydraulic drive unit 152 operates the power generation unit 160 as the fluid flows along the second hydraulic circuit 520.
- the fluid flows only in one direction, and a plurality of check valves 521 and 522 are provided.
- the check valves 521 and 522 in the second hydraulic circuit 520 may be provided before and after the hydraulic driver 152.
- the high pressure side accumulator 523 and the low pressure side accumulator 524 are provided before and after the hydraulic driver 152 in the second hydraulic circuit 520.
- the high pressure side accumulator 523 and the low pressure side accumulator 524 when the fluid flows in the second hydraulic circuit 520, energy is stored in the high pressure side accumulator 523 in the form of pressure and volume of the fluid. Since the stored energy moves to the low pressure side accumulator 524 to operate the hydraulic drive unit 152, a smoothing effect is obtained. As a result, the quality of power generated by the power generation unit 160 may be constant, and the generator performance of the power generation unit 160 may be optimized.
- the rectifier circuit 530 is provided in the form of a bridge to switch the flow direction of the fluid between the first hydraulic circuit 510 and the second hydraulic circuit 520.
- the rectifier circuit 530 serves as a one-way clutch to allow the fluid to flow in one direction in the second hydraulic circuit 520 even though the fluid flows in the first and second directions in the first hydraulic circuit 510.
- the rectifier circuit 530 has two branch flow paths connected to the first hydraulic circuit 510 and two branch flow paths connected to the second hydraulic circuit 520 in a quadrangular shape, and check valves are formed on each branch flow path. 531, 532, 533, 534 are provided. In addition, the rectifier circuit 530 has the check valves 531, 532, 533, 534 on the branch flow path facing each other in the same direction, and the check valves 531, 532, 533, 534 on the branch flow paths adjacent to each other. They are arranged in opposite directions. As described above, the rectifier circuit 530 may switch the flow direction of the fluid as illustrated in FIGS. 2 and 3 by disposing the check valves 531, 532, 533, and 534.
- the power generator 160 is driven by the hydraulic driver 152 to produce power.
- a plurality of tension transmitting members 121 are connected to one animal body 110, and one equalizer 140 and one power converter 150 are connected to the plurality of tension transmitting members 121.
- a configuration in which the power generation unit 160 is connected is connected.
- this is only an example, and it is also possible to separately install the equalizer 140, the power converter 150, and the power generator 160 in the plurality of tension transmitting members 121, respectively.
- the above-described embodiments illustrate that the wave power generation system 10 is installed in an onshore manner, but this is only an example.
- the wave power generation system according to the present embodiments may also be installed in an offshore way. System 10 may be applied.
- the tension transmitting member 121 when the tension transmitting member 121 is pulled, the one-way rotation of the converter 130 is increased by a predetermined speed or more through the speed increaser 131 and transmitted to the hydraulic generator 151.
- the fluid generated on the high pressure side of the oil pressure generating unit 151 flows in the first direction along the arrow H on the first oil pressure circuit 510, and passes through the second check valve 532 of the rectifier circuit 530. To the hydraulic circuit 520.
- the fluid is generated by the hydraulic drive unit 152 as the fluid flows through the high pressure side accumulator 523 to the low pressure side accumulator 524.
- the fluid flows into the low pressure side of the hydraulic generator 151 along the arrow L on the first hydraulic circuit 510 through the fourth check valve 534 of the rectifier circuit 530.
- the power converter 150 flows the fluid in a second direction opposite to the first direction.
- the high pressure side of the hydraulic generator 151 is opposite to FIG. 2, so that the fluid flows in the second direction along the arrow H on the first hydraulic circuit 510.
- the fluid flows to the second hydraulic circuit 520 through the third check valve 533 of the rectifier circuit 530.
- the fluid is generated by the hydraulic drive unit 152 as the fluid flows through the high pressure side accumulator 523 to the low pressure side accumulator 524.
- the low pressure side fluid flowing in the low pressure side accumulator 524 is connected to the low pressure of the oil pressure generating unit 151 along the arrow L on the first hydraulic circuit 510 through the first check valve 531 of the rectifier circuit 530. Flows into the side.
- the hydraulic generator 151 and the hydraulic driver 152 use a hydraulic motor, the driving source for driving the hydraulic generator 151 and the hydraulic driver 152 can be omitted, so that the wave power generation system can be omitted.
- the size and configuration of (10) can be simplified.
- the hydraulic driving unit 152 is operated, so that smooth power generation occurs. As a result, the quality of the power produced by the power generation unit 160 is constantly managed, and the generator can be optimized.
- the power production unit 160 may produce power alternately.
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims (19)
- 파도에 부유하는 가동물체의 6자유도 운동에 의해 발생되는 운동 에너지를 전달하는 장력전달 부재;상기 장력전달 부재에 연결되어 유압을 발생시키는 유압 발생부를 포함하는 동력변환부; 및상기 장력전달 부재에 연결되어 상기 장력전달 부재의 장력을 유지하는 이퀄라이저;를 포함하고,상기 동력변환부는,상기 장력전달 부재에서 장력이 인가되면, 상기 장력에 의해서 상기 유압 발생부가 제1 방향으로 유체를 유동시키고,상기 장력전달 부재에서 장력이 인가되지 않으면, 상기 이퀄라이저에 의해서 상기 유압 발생부가 제2 방향으로 유체를 유동시키는 파력발전 시스템.
- 제1항에 있어서,상기 동력변환부는,상기 유압 발생부;전력을 생산하기 위한 전력생산부에 연결되는 유압 구동부;상기 유압 발생부에 유체를 유동시키는 제1 유압 회로;상기 유압 구동부에 유체를 유동시키는 제2 유압 회로; 및상기 제1 유압 회로와 상기 제2 유압 회로 사이에 구비되어서 상기 유체의 방향을 전환하는 정류 회로;를 포함하는 파력발전 시스템.
- 제2항에 있어서,상기 정류 회로는, 상기 제1 유압 회로에서 제1 방향으로 유체가 유동할 때와 반대 방향인 제2 방향으로 유체가 유동할 때 상기 유체의 유동 방향을 전환하여 상기 제2 유압 회로에서 동일한 방향으로 유체가 유동하도록 하는 파력발전 시스템.
- 제3항에 있어서,상기 정류 회로는 브릿지 형태로 배치되는 복수의 분지 유로를 포함하고, 상기 복수의 분지 유로 상에 각각 체크 밸브가 구비되고,상기 정류 회로에서 서로 마주보게 분지 유로 상의 체크 밸브는 서로 동일한 방향으로 배치되고, 서로 이웃하는 분지 유로 상의 체크 밸브는 서로 반대 방향으로 배치되는 파력발전 시스템.
- 제2항에 있어서,상기 유압 발생부와 상기 유압 구동부는 각각 유압 모터인 파력발전 시스템.
- 제2항에 있어서,상기 제2 유압 회로는 상기 유압 구동부의 전후에 고압측 축압기와 저압측 축압기가 구비되는 파력발전 시스템.
- 제6항에 있어서,상기 제2 유압 회로는 복수의 체크 밸브가 구비되고,상기 체크 밸브는 상기 유압 구동부의 전후에 구비되는 파력발전 시스템.
- 제1항에 있어서,상기 이퀄라이저는 유압 모터, 유압 펌프, 유압 실린더, 전기 모터, 가스 스프링, 기계 스프링 중 어느 하나를 포함하는 파력발전 시스템.
- 제1항에 있어서,상기 장력전달 부재는 상기 가동물체의 3개소 이상의 위치에 연결되며 복수개가 구비되는 파력발전 시스템.
- 제9항에 있어서,상기 복수의 장력전달 부재가 결합되는 변환체가 구비되고,상기 동력변환부는 상기 변환체의 일 측에 구비되고, 상기 이퀄라이저는 상기 변환체의 타측에 구비되는 파력발전 시스템.
- 제10항에 있어서,상기 복수의 장력전달 부재에 각각 이퀄라이저가 구비되거나,상기 복수의 장력전달 부재가 1개의 이퀄라이저와 연결되는 파력발전 시스템.
- 제10항에 있어서,상기 변환체의 회전 속도를 증속시키는 증속기를 포함하고,상기 증속기는 상기 변환체와 상기 동력변환부 사이에 구비되는 파력발전 시스템.
- 제12항에 있어서,상기 증속기는 기설정 기준보다 낮은 기어비로 형성되는 파력발전 시스템.
- 파도에 부유하면서 파도의 의해 움직이는 가동물체;상기 가동물체의 6자유도 운동이 가능하도록 상기 가동물체의 적어도 3개소 이상의 위치에 연결되어서 상기 가동물체의 운동 에너지를 일 방향으로 전달하는 복수의 장력전달 부재를 포함하는 운동전달부;상기 복수의 장력전달 부재가 연결되는 변환체;상기 변환체의 일 측에 구비되는 이퀄라이저;상기 변환체의 타 측에 구비되어서 유압을 발생시키는 동력변환부; 및상기 동력변환부에 연결되어서 전력을 생산하는 전력생산부;를 포함하고,상기 장력전달 부재가 당겨지면 상기 이퀄라이저에 에너지가 저장되고, 상기 동력변환부가 제1 방향으로 유체를 유동시킴에 따라 상기 전력생산부에서 전력이 생산되고,상기 장력전달 부재가 당겨지지 않으면 상기 이퀄라이저에 저장된 에너지에 의해서 상기 동력변환부가 제2 방향으로 유체를 유동시킴에 따라 상기 전력생산부에서 전력이 생산되는 파력발전 시스템.
- 제14항에 있어서,상기 동력변환부는,상기 장력전달 부재에 연결되어서 유압을 발생시키는 유압 발생부;상기 전력생산부에 연결되는 유압 구동부;상기 유압 발생부에 유체를 유동시키는 제1 유압 회로;상기 유압 구동부에 유체를 유동시키는 제2 유압 회로; 및상기 제1 유압 회로와 상기 제2 유압 회로 사이에 구비되어서 상기 유체의 방향을 전환하는 정류 회로;를 포함하는 파력발전 시스템.
- 제15항에 있어서,상기 정류 회로는, 상기 제1 유압 회로에서 제1 방향으로 유체가 유동할 때와 반대 방향인 제2 방향으로 유체가 유동할 때 상기 유체의 유동 방향을 전환하여 상기 제2 유압 회로에서 동일한 방향으로 유체가 유동하도록 하는 파력발전 시스템.
- 제15항에 있어서,상기 제2 유압 회로는 상기 유압 구동부의 전후에 고압측 축압기와 저압측 축압기가 구비되는 파력발전 시스템.
- 제14항에 있어서,상기 이퀄라이저는 유압 모터, 유압 펌프, 유압 실린더, 전기 모터, 가스 스프링, 기계 스프링 중 어느 하나를 포함하는 파력발전 시스템.
- 파도에 부유하는 가동물체의 6자유도 운동에 의해 장력전달 부재를 통해 장력이 인가되면 동력변환부가 유체를 제1 방향으로 유동시키고,상기 동력변환부의 정류 회로가 상기 제1 방향으로 유동되는 유체를 유압 구동부로 유동시키고,상기 장력전달 부재에서 장력이 가해지지 않으면, 이퀄라이저에 의해 상기 동력변환부가 유체를 제2 방향으로 유동시키고,상기 정류 회로가 상기 제2 방향으로 유동되는 유체의 방향을 전환하여 상기 유압 구동부로 유동시키고,상기 유압 구동부에 연결된 전력생산부에서 전력이 생산되는,파력발전 시스템의 제어 방법.
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| AU2019232264A AU2019232264B2 (en) | 2018-03-09 | 2019-03-08 | Wave power generation system and method for controlling same |
| CN201980017472.9A CN111971474B (zh) | 2018-03-09 | 2019-03-08 | 波浪能发电系统及其控制方法 |
| JP2020547102A JP7130762B2 (ja) | 2018-03-09 | 2019-03-08 | 波力発電システム及びその制御方法 |
| US16/977,096 US11339760B2 (en) | 2018-03-09 | 2019-03-08 | Wave power generation system and method for controlling same |
| EP19763923.0A EP3763935A4 (en) | 2018-03-09 | 2019-03-08 | WATER POWER GENERATION SYSTEM AND ITS CONTROL PROCESS |
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| KR1020180028033A KR102027553B1 (ko) | 2018-03-09 | 2018-03-09 | 파력발전 시스템 및 그 제어 방법 |
| KR10-2018-0028033 | 2018-03-09 |
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| EP (1) | EP3763935A4 (ko) |
| JP (1) | JP7130762B2 (ko) |
| KR (1) | KR102027553B1 (ko) |
| CN (1) | CN111971474B (ko) |
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| NO347108B1 (en) * | 2021-10-19 | 2023-05-15 | Hurricane Innovation As | Wave power generator system |
| US20250369414A1 (en) * | 2024-06-03 | 2025-12-04 | G.R.E.S. Llc | Regenerative energy system using kinetic energy transfer from wave motion and train motion to a generator |
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| AU2019232264B2 (en) | 2022-05-19 |
| KR102027553B1 (ko) | 2019-10-01 |
| KR20190106482A (ko) | 2019-09-18 |
| EP3763935A4 (en) | 2021-11-17 |
| US11339760B2 (en) | 2022-05-24 |
| EP3763935A1 (en) | 2021-01-13 |
| CN111971474B (zh) | 2022-05-13 |
| JP2021515868A (ja) | 2021-06-24 |
| US20200400116A1 (en) | 2020-12-24 |
| JP7130762B2 (ja) | 2022-09-05 |
| CN111971474A (zh) | 2020-11-20 |
| CL2020002307A1 (es) | 2021-02-05 |
| AU2019232264A1 (en) | 2020-09-17 |
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