WO2017090790A1 - Floating-type power generation apparatus and integrated power generation system having same - Google Patents

Abstract

A floating-type power generation apparatus according to the present invention comprises: a buoyant body moving up and down due to the force of the waves while floating on the ocean surface; a wave power generation unit installed on a marine structure and linked by a cable to the buoyant body in a direction perpendicular to the direction of vertical movement thereof so as to convert the kinetic energy of the buoyant body to electrical energy; and a support roller, rotatably installed on the marine structure and upwardly supporting the cable, for converting the vertical kinetic energy of the buoyant body to horizontal kinetic energy and transferring same to the wave power generation unit.

Description

Floating power unit and complex power generation system having the same

The present invention relates to a floating power generation apparatus and a complex power generation system having the same. More specifically, the floating power generation apparatus that can improve the power generation performance of the equipment by continuously applying the return elastic force to the mover during the lifting operation of the buoyancy body And a complex power generation system having the same.

In general, the ocean wave energy (Ocean wave energy) can be said to be infinite clean energy that is not depleted no matter how used together with solar energy.

In particular, since waves contain a lot of energy, research has recently focused on wave power generation systems that produce electricity from wave energy.

The recent wave power generation system includes a buoyancy body installed in a floating state on the sea surface, and a wave power generation unit for generating vertical kinetic energy of the buoyancy body installed in an offshore structure into electrical energy.

However, the conventional wave power generation system has a structure in which the buoyancy body and the wave power generation unit are interlocked up and down, so that the wave force is directly transmitted to the wave generator, which may cause the wave generator to be damaged by a continuous shock.

In particular, when the equipment is operated in an emergency situation such as a typhoon, excessive force is continuously applied to the buoyancy body, so it is difficult to guarantee the damage and safety of the equipment, and it is a factor that shortens the life of the equipment. Was doing.

In addition, the conventional wave power generation system is installed perpendicular to the buoyancy body, there is a fear of interference between the wave power generation unit and the surrounding structure, there was a difficulty in design.

SUMMARY OF THE INVENTION An object of the present invention is to provide a floating power generation apparatus capable of improving the power generation performance of equipment by continuously applying a return elastic force to a mover during a lifting operation of a buoyancy body, and a combined power generation system having the same.

In addition, by using the support rollers, the vertical motion of the buoyancy body is converted into horizontal motion and transmitted to the wave power generation unit, so that the force applied to the buoyancy body is not directly transmitted to the wave generator, thereby preventing damage to the equipment and ensuring safety. It is to provide a power generation device and a complex power generation system having the same.

Floating generator according to the present invention, the buoyancy body floating up and down by wave force in a floating state on the sea surface, is installed on the offshore structure, the buoyancy is interlocked in the direction perpendicular to the vertical flow direction of the buoyancy body by a cable Wave power generation unit for converting the kinetic energy of the sieve into electrical energy, and rotatably installed in the offshore structure, and supports the cable upwards to convert the vertical kinetic energy of the buoyancy body into horizontal kinetic energy transferred to the wave power generation unit It characterized in that it comprises a supporting roller.

Here, the wave power generation unit is installed horizontally on the offshore structure, the inside of the housing is installed inside the stator, the coil is wound therein, and the magnetic material is installed on the outside of the stator installed to be movable inside It may be provided with a mover for generating an induced current in the coil through the linkage with the cable.

In addition, one end of the cable is connected to the front end of the mover, the rear end of the mover is preferably connected to the elastic member for applying a return elastic force.

In addition, the elastic member is preferably extended to the length when the mover moves forward, it is preferable to apply a tensile elastic force to return in the process of moving the mover backward.

In addition, the elastic member preferably exerts a compressive elastic force to cushion the impact when the mover completely back to the rear.

In addition, a driving unit for forcibly rotating the support roller is further connected to one side of the support roller, the drive unit is a driving roller connected by the support roller and the cable, and for transmitting the rotational force to the rotation center of the drive roller A drive motor may be provided.

In addition, the driven roller may be further provided between the drive roller and the support roller, the driven roller may be connected to the drive roller and the support roller by the cable to allow the rotational force to be transmitted.

In addition, the driving unit may be further electrically connected to a control unit for controlling the driving of the drive unit, the control unit may be further connected to the control unit for transmitting the state information of the sea surface to the control unit.

On the other hand, the hybrid hybrid power generation system having a floating generator according to the present invention is buoyant body floating up and down by wave force in a floating state on the sea surface, and installed in the offshore structure, and the up and down flow direction of the buoyancy body by a cable A wave power generating unit for interlocking in a perpendicular direction and converting the kinetic energy of the buoyancy body into electrical energy and rotatably installed in the marine structure, by supporting the cable upwards to convert the vertical movement of the buoyancy body into a horizontal motion It is characterized in that it comprises a support roller to be transmitted to the wave power generating unit, and the wind power generator is installed in the offshore structure, converting the rotational kinetic energy of the blades by the sea wind into electrical energy.

According to the present invention, the return elastic force is continuously applied to the mover when the buoyancy body is raised, and the vertical movement of the buoyancy body is transferred to the wave power generating unit by converting the vertical motion of the buoyancy body to the horizontal motion using the support roller, thereby improving the power generation performance of the equipment. In addition, since the force applied to the buoyancy body is not directly transmitted to the wave generator, it has the effect of preventing damage to the equipment and securing safety.

In addition, by separating the buoyancy body to a certain height from the sea surface in the event of an emergency such as a typhoon, the use of the buoyancy body can be stopped for a certain period of time in an environment where a large wave force over the limit is continuously applied to extend the life of the equipment. It has an effect that can be made.

In addition, since the wave generator operates in a direction perpendicular to the direction of movement of the buoyancy body in a horizontally installed state, there is no interference between the wave generator and the peripheral equipment and an installation space is easily secured.

In addition, by implementing power generation using wave power and wind power generation at the same time, it has the effect of increasing the power generation operation rate, and further improve the power generation efficiency.

1 is a view for showing a floating power generation apparatus according to an embodiment of the present invention.

2 is a view showing a state in which the floating power generation apparatus according to an embodiment of the present invention installed in the offshore structure.

3 is a view showing a state in which the driving unit is applied to the floating power generation apparatus according to an embodiment of the present invention.

4 is a view for showing the operation of the drive unit in the floating power generator according to an embodiment of the present invention.

5 is a view for showing a combined power generation system having a floating generator according to another embodiment of the present invention.

6 is a view showing a connection relationship between the wind power generation unit and the power storage unit of the hybrid power generation system having a floating power generation apparatus according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Advantages and features of the present invention, and a method of achieving the same will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed herein, but may be embodied in various different forms, and the present embodiments only make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.

In addition, in the description of the present invention, if it is determined that related related art and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

1 is a view for showing a floating power generation apparatus according to an embodiment of the present invention, Figure 2 is a view for showing a state in which the floating power generation apparatus according to an embodiment of the present invention installed in an offshore structure.

1 and 2, the floating power generation apparatus according to the present invention includes a buoyancy body 100, wave power generation unit 200, and the support roller 300.

First, the buoyancy body 100 forms a predetermined buoyancy therein, and flows up and down by wave force in a floating state on the sea surface 10.

Here, the position of the buoyancy body 100 is changed up and down by the change in the height of the wave, it can also flow by the wave force acting in the side.

In addition, the buoyancy body 100 may be installed as many as necessary, and may be installed at a lower height below the marine structure 10 as shown in FIG.

In this state, the buoyancy body 100 may be positioned in a state where the lower end of the buoyant body is partially locked to the sea surface 10 or almost all of them are locked.

The buoyancy body 100 as described above is connected by the wave power generating unit 200 and the cable (C), the upper end will be described later, and transmits the kinetic energy through the flow in the vertical direction.

The marine structure 20 may be spaced apart from the sea surface 10 by a predetermined height, and a plurality of support legs may be installed at the lower end of the marine structure 20 so that the marine structure 20 may be fixed to the sea bottom.

The wave power generator (linear generator) 200 is installed in the offshore structure 20 and is horizontally connected to the buoyancy body 100 by a cable C to have a step.

At this time, the wave power generating unit 200 is a power generation operation in a state installed in a direction perpendicular to the vertical movement direction of the buoyancy body (100).

In this state, the wave force generating unit 200 converts the kinetic energy according to the vertical motion of the buoyancy body 100 into electrical energy.

To this end, the wave power generation unit 200 may be provided with a housing 210, a stator 220, and a mover 230.

The housing 210 is installed horizontally in the offshore structure 20, and an installation space in which the stator 220 and the mover 230 are positioned may be formed inside the housing 210.

The stator 220 is installed inside the housing 210, and a coil (not shown) is wound inside the stator 220 to generate an induced current.

In this case, the stator 220 may be further electrically connected to a power storage unit 230 for charging electrical energy.

The mover 230 is installed to be movable inside the stator, and a magnetic material (not shown) is installed between the outside of the mover 230 and the inside of the stator 220.

The mover 230 generates an induced current in the coil while interlocking in both directions by the pushing or pulling force of the cable C.

At this time, the electric energy may be generated by charging the power storage unit 230 through generation of induced current by the forward and backward movement of the mover 230.

In detail, one end of the above-mentioned cable (C) is connected to the front end of the mover 230, and the buoyancy body (100) is moved back and forth with the cable (C) when the elevating by the wave while inducing current to the coil Can be generated.

In particular, the elastic member (S) for applying a return elastic force to the rear end of the mover 230 may be further connected.

The elastic member (S), one end is connected to the rear end of the mover 230, as shown in Figure 1 and 2, the other end can be connected to a separate fixing bracket.

Here, the elastic member (S) may be applied in the form of a coil spring for applying compression and saddle elastic force.

Such elastic member (S), when the mover 230 moves forward with the cable (C), the length can be elongated while the elastic force is overcome.

At this time, the elastic member (S) may be elongated while the elastic force is overcome by the weight of the buoyancy body (100).

On the contrary, when the mover 230 moves rearward together with the cable C, the elastic member S may return to its original shape and exert a tensile elastic force.

In this process, since the elastic member S additionally exerts a tensile elastic force, the cable C and the mover 230 can be quickly retracted.

In addition, the elastic member (S) can be applied with a variety of elastic forces as necessary, through which it is possible to adjust the vertical movement degree of the buoyancy body 100 in accordance with the wave period of the installation environment.

In addition, when the cable (C) and the mover 230 is completely returned to the rear, the elastic member (S) may partially buffer the impact generated when the mover (230) returns.

That is, when the elastic member (S) is compressed by the return force of the mover 230 by forming a certain play, it is possible to mitigate the impact of the mover (230).

The support roller 300 is rotated in both directions in a state in which the cable C is upwardly supported between the buoyancy body 100 and the wave power generating unit 200 described above.

The support roller 300 for this purpose, is rotatably installed on the basis of the horizontal center of rotation fixed to the offshore structure (10).

In this state, the support roller 300 is repeatedly rotated in the direction of the buoyancy body 100 and the wave power generation unit 200 in a state of supporting the cable (C) upward.

That is, the support roller 300 supports the cable (C) upward from the bottom, converts the up and down kinetic energy of the buoyancy body 100 into a horizontal kinetic energy and transmits it to the mover (230).

At this time, since the movement direction is changed by the support roller 300, the mover 230 performs a horizontal reciprocating motion while being connected to the cable (C).

On the other hand, one side of the support roller 300 may be further connected to the driving unit 310 for transmitting a forcible rotational force as shown in Figs.

For this purpose, the driving unit 310 may be provided with a driving roller 311 and a driving motor 312.

The driving roller 311 is capable of rotating in both directions based on a horizontal center of rotation fixed to the offshore structure 20, and is connected by a supporting roller 300 and a cable (C).

The drive motor 312 is driven by the power transmitted from the outside, and transmits the rotational force while the drive shaft of the drive motor 312 is connected to the rotation center of the drive roller 311.

For example, when operating the drive motor 312, as shown in Figure 4 while the drive roller 311 and the support roller 300 is rotated to position the buoyancy body 100 to a certain height.

In this case, since the buoyancy body 100 is spaced apart from the sea surface 10 by a certain height, it is possible to prevent the flow energy of the buoyancy body 100 from being transmitted to the wave generation unit 200 in an emergency situation such as during a typhoon. have.

That is, since the buoyancy body 100 is spaced apart from the sea surface 10, it is possible to prevent the equipment from being damaged or deteriorated by the heavy flow of the buoyancy body 100.

In addition, a driven roller 313 may be further provided between the driving roller 311 and the supporting roller 300.

The driven roller 313 can be rotated in both directions based on a horizontal center of rotation fixed to the offshore structure 20.

The driven roller 313 is connected to the driving roller 311 and the support roller 300 by a cable (C), and transmits the rotational force of the drive roller 311 to the support roller 300. .

On the other hand, the driving unit 310 may be further connected to the control unit 500 for controlling the drive as shown in FIG.

In addition, the controller 500 may further be electrically connected to a detector (not shown) for transmitting the state information (flow rate, wave height, etc.) of the sea level 10 to the controller.

The control unit 500 as described above may be installed at a remote location or may be installed at the offshore structure 20.

Hereinafter, a complex power generation system having a floating power generation apparatus according to another embodiment of the present invention will be described below, and the same components as the above-described components will not be repeatedly described.

5 and 6, a hybrid power generation system having a floating power generation apparatus according to another embodiment of the present invention is a buoyancy body 100, wave power generation unit 200, support roller 300, and wind power It includes a power generation unit (400).

Here, the wind power generator 400 is installed in the offshore structure 20 and converts the rotational kinetic energy of the blades by the sea wind into electrical energy.

The wind turbine 400 for this purpose, may be installed on the top of the tower 410 is installed vertically on the top of the offshore structure (20).

The wind turbine 400 may be installed inside a housing coupled to the top of the tower 410.

In addition, the wind turbine 400 may transmit the rotational kinetic energy of the blade 520 rotatably installed at the front end of the housing.

At this time, a separate power transmission unit (not shown) may be further installed between the rotation shaft of the blade 520 and the wind turbine 400.

Such a wind turbine 400 may use a method of generating an induced current of a rotor having a stator and a magnetic body having a coil installed therein.

In addition, the wind power generation unit 400 may share the power generated by the power generation unit 240 of the wave power generation unit 200 as shown in FIG.

As a result, the present invention continuously acts the return elastic force to the mover 230 during the lifting operation of the buoyancy body 100, and converts the vertical movement of the buoyancy body 100 to the horizontal movement using the support roller 300 It can be delivered to the wave power generation unit 200.

As a result, the power generation performance of the equipment can be improved, and the force applied to the buoyancy body 100 is not directly transmitted to the wave power generation unit 200, thereby preventing damage to the equipment and ensuring safety.

In addition, by separating the buoyancy body 100 from the sea level 10 to a fixed height during an emergency situation in which a typhoon or the like occurs, the use of the buoyancy body 100 for a predetermined period of time in an environment in which a large wave force over a limited range is continuously applied. Can be stopped to extend the life of the equipment.

In addition, since the wave generator 200 operates in a direction perpendicular to the direction of movement of the buoyancy body 10 in a horizontally installed state, the interference between the wave generator 200 and the peripheral equipment does not occur and it is easy to secure an installation space. .

In addition, by implementing power generation using wave power and wind power generation at the same time, it is possible to increase the power generation operation rate, and further improve the power generation efficiency.

So far, specific embodiments of the floating power generation apparatus of the present invention and a complex power generation system having the same have been described, but it is obvious that various embodiments can be modified without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the claims below and equivalents thereof.

In other words, the foregoing embodiments are to be understood in all respects as illustrative and not restrictive, the scope of the invention being indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

Claims (9)

1. Buoyancy body floating up and down by wave force in a state floating on the sea surface;

   A wave power generation unit installed in the offshore structure and interlocked in a direction perpendicular to a vertical flow direction of the buoyancy body by a cable to convert kinetic energy of the buoyancy body into electrical energy; And

   Floating power generation apparatus is rotatably installed in the offshore structure, the support roller for supporting the cable upwards to convert the vertical kinetic energy of the buoyancy body to horizontal kinetic energy to transfer to the wave power generation unit; .
2. The method of claim 1,

   The wave power generation unit,

   A housing installed horizontally on the marine structure;

   A stator installed inside the housing and having a coil wound therein;

   Floating power generation apparatus characterized in that it is provided so as to be movable inside the stator in a state in which the magnetic material is installed on the outside, the mover for generating an induced current in the coil through interlocking with the cable.
3. The method of claim 2,

   One end of the cable,

   Connected to the front end of the mover,

   At the rear end of the mover,

   Floating power unit characterized in that the elastic member for further applying the return elastic force is connected.
4. The method of claim 3,

   The elastic member,

   Floating power generation apparatus characterized in that the elongated length is moved when the mover moves forward, and the tensile force is applied to return the mover in the process of moving backward.
5. The method of claim 3,

   The elastic member,

   Floating power generation apparatus characterized in that for applying the compressive elastic force to cushion the impact when the mover completely back to the rear.
6. The method of claim 1,

   On one side of the support roller,

   A driving unit for forcibly rotating the support roller is further connected,

   The driving unit,

   A drive roller connected to the support roller by a cable;

   Floating power unit characterized in that it comprises a drive motor for transmitting a rotational force to the center of rotation of the drive roller.
7. The method of claim 6,

   Between the drive roller and the support roller,

   The driven roller is further provided,

   The driven roller,

   Floating power generation apparatus characterized in that to connect the drive roller and the support roller by the cable to transmit the rotational force.
8. The method of claim 6,

   In the drive unit,

   A control unit for controlling the driving of the drive unit is further electrically connected,

   The control unit,

   Floating power unit characterized in that the sensing unit for transmitting the state information of the sea level to the control unit is further electrically connected.
9. Buoyancy body floating up and down by wave force in a state floating on the sea surface;

   A wave power generation unit installed in the offshore structure and interlocked in a direction perpendicular to a vertical flow direction of the buoyancy body by a cable to convert kinetic energy of the buoyancy body into electrical energy;

   A support roller rotatably installed on the offshore structure and supporting the cable upwardly to convert vertical and vertical kinetic energy of the buoyancy body into horizontal kinetic energy and to transfer it to the wave power generation unit; And

   The wind turbine is installed on the offshore structure, and converts the rotational kinetic energy of the blades by the sea wind into electrical energy; Combined power generation system having a floating power generation device comprising a.

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