Floating offshore power generation device

Abstract

This floating wind power generation device comprises: a power generation part for performing wind power generation; and a floating body for supporting the power generation part, wherein the floating body can include: a main column for supporting the power generation part; a plurality of auxiliary columns provided in the vicinity of the main column; a plurality of connection members for connecting the main column and each of the plurality of auxiliary columns; and a plurality of pontoons provided below the plurality of connection members with respect to the direction of gravity so as to support the weight of each of the main column and the plurality of auxiliary columns.

Description

floating offshore power generation unit

[0001] The present disclosure relates to a floating offshore power generation device.

[0002] Wind power generation converts wind energy into mechanical energy to produce electricity, and is attracting attention as a clean energy source for reducing greenhouse gases.

[0003] Wind turbines have been primarily installed on land, but to address noise complaints and land acquisition issues resulting from increasing demand, offshore installations are gradually increasing.

[0004] Among offshore wind turbines, there are floating types that generate electricity while floating in the water. Because floating wind turbines are less structurally restricted by water depth, they can be easily installed in deep, open waters where strong winds are advantageous for increasing power generation efficiency. Floating offshore wind turbines consist of a power generation unit located on top and a substructure located below to support the power generation unit while floating on the sea.

[0005] According to one aspect of the present disclosure, a floating wind turbine is provided that reduces production costs, facilitates vessel access, and improves maneuverability by improving the structure of the substructure of the floating wind turbine.

[0006] According to one aspect of the present invention, a floating wind power generator includes a power generation unit that performs wind power generation and a float provided to support the power generation unit, and the float may include a main column that supports the power generation unit, a plurality of auxiliary columns provided around the main column, a plurality of connecting members that respectively connect the main column and the plurality of auxiliary columns, and a plurality of pontoons provided below the plurality of connecting members based on the direction of gravity to support the self-weight of the main column and the plurality of auxiliary columns.

[0007] The plurality of pontoons may be connected to the main column and the plurality of auxiliary columns from an area between the main column and the plurality of auxiliary columns, respectively.

[0008] The above plurality of pontoons can be connected to each other in the above one area.

[0009] The above plurality of pontoons may have the same length.

[0010] The above plurality of auxiliary columns may each include a first auxiliary column and a second auxiliary column adjacent to the main column.

[0011] The above plurality of pontoons may include a first pontoon connected to the main column, a second pontoon connected to the first auxiliary column, and a third pontoon connected to the second auxiliary column.

[0012] The second pontoon and the third pontoon may have the same length.

[0013] The first pontoon may have a longer length than the second pontoon and the third pontoon.

[0014] The second pontoon and the third pontoon may have the same length.

[0015] The first pontoon may have a shorter length than the second pontoon and the third pontoon.

[0016] The first pontoon, the second pontoon, and the third pontoon may have the same width.

[0017] The second pontoon and the third pontoon may have the same width.

[0018] The first pontoon may have a narrower width than the second pontoon and the third pontoon.

[0019] The above plurality of auxiliary columns may each include a first auxiliary column adjacent to the main column, a second auxiliary column, and a third auxiliary column provided between the first auxiliary column and the second auxiliary column.

[0020] The first to third auxiliary columns may be positioned on a virtual circle.

[0021] The above plurality of auxiliary columns may further include N auxiliary columns arranged on the virtual circumference.

[0022] The first pontoon may include a first pontoon receiving portion formed inside the first pontoon to receive ballast water.

[0023] The second pontoon may include a second pontoon receiving portion formed inside the second pontoon to receive ballast water.

[0024] The third pontoon may include a third pontoon receiving portion formed inside the third pontoon to receive ballast water.

[0025] The first pontoon receiving portion, the second pontoon receiving portion, and the third pontoon receiving portion can form separate spaces from each other.

[0026] At least two of the first pontoon receiving portion, the second pontoon receiving portion, and the third pontoon receiving portion may be provided to be connected to each other so that ballast water can move.

[0027] The above main column may include a main column receiving portion configured to receive ballast water.

[0028] The above first auxiliary column may include a first auxiliary column receiving portion configured to receive ballast water.

[0029] The above second auxiliary column may include a second auxiliary column receiving portion configured to receive ballast water.

[0030] The above main column receiving portion and the above first pontoon receiving portion can be connected to each other.

[0031] The above first auxiliary column receiving portion and the above second pontoon receiving portion can be connected to each other.

[0032] The above second auxiliary column receiving portion and the above third pontoon receiving portion can be connected to each other.

[0033] According to one aspect of the present disclosure, a floating wind power generator includes a power generation unit that performs wind power generation and a float provided to support the power generation unit, wherein the float may include a main column that supports the power generation unit, a first auxiliary column and a second auxiliary column provided around the main column, a connection member including a first connection member that connects the main column and the first auxiliary column, a second connection member that connects the main column and the second auxiliary column, and a third connection member that connects the first auxiliary column and the second auxiliary column, and a pontoon that is provided below the connection member based on the direction of gravity and supports the self-weight of the main column, the first auxiliary column, and the second auxiliary column, the pontoon including a first pontoon that is connected to the main column from an area between the main column, the first auxiliary column, and the second auxiliary column, a second pontoon that is connected to the first auxiliary column from the area, and a third pontoon that is connected to the second auxiliary column from the area.

[0034] Embodiments of the present invention can improve the motion performance of a floating wind turbine by improving the structure of the pontoon and can reduce manufacturing costs.

[0035] Embodiments of the present invention can improve the structure of a pontoon to facilitate access of a vessel to a floating wind turbine.

[0036] Figure 1 is a perspective view of a floating wind turbine according to one embodiment.

[0037] FIG. 2 is a drawing showing a floating body separated from a floating wind power generator according to one embodiment.

[0038] FIG. 3 is a plan view illustrating a floating body separated from a floating wind power generator according to one embodiment.

[0039] FIG. 4 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0040] FIG. 5 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0041] FIG. 6 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0042] The embodiments described in this specification are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents or modified examples that can replace them at the time of filing this application are also included in the scope of the rights of the present invention.

[0043] Singular expressions used in the description may include plural expressions unless the context clearly indicates otherwise. In the drawings, elements such as shape and size may be exaggerated for clarity.

[0044] In this specification, terms such as “include” or “have” are intended to indicate the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood to not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0045] Throughout the specification, ordinal expressions such as “first” and “second” are used to distinguish between multiple components, and the ordinal numbers used do not indicate the order of arrangement between components, the order of manufacturing, or the importance thereof.

[0046] When it is said that a component is "connected" to another component, it should be understood that it may be directly connected to that other component, but there may also be other components in between.

[0047] Fig. 1 is a perspective view of a floating wind turbine according to one embodiment. Fig. 2 is a drawing of a floating wind turbine according to one embodiment, showing a floater separated from the body. Fig. 3 is a plan view of a floating wind turbine according to one embodiment, showing a floater separated from the body.

[0048] Referring to Fig. 1, a floating wind power generator (1) may include a power generation unit (2) configured to generate wind power, and a floating body (3) configured to support the power generation unit (2).

[0049] The power generation unit (2) may include a tower (2a), a nacelle (2b) installed on the upper part of the tower (2a), and a rotor (2c) connected to the rotational axis of the nacelle (2b). The nacelle (2b) is a structure that mechanically rotates wind power and has a built-in generator. The power generation unit (2) can perform power generation as the generator operates through the rotor (2c) that rotates due to the wind.

[0050] The float (3) may be arranged to float on water. The float (3) may be arranged to support the power generation unit (2) while floating on the sea.

[0051] Floaters can be configured in various configurations. In the case of semi-submersibles, they can be divided into centrally arranged floaters, in which three columns are arranged corresponding to the vertices of a triangle, and the power generation unit is installed in the center of the columns, and eccentrically arranged floaters, in which three columns are arranged, and the power generation unit is installed in one of the columns.

[0052] According to one embodiment, the float (3) may be an eccentrically arranged float. The float may include a plurality of columns. For example, the float (3) may include three columns (3a, 3b, 3c) arranged at equal distances from each other, and the power generation unit (2) may be installed in any one of these three columns (3a, 3b, 3c). For example, as illustrated in FIG. 1, the power generation unit (2) may be installed in the main column (3a).

[0053] Referring to FIGS. 1 to 3, the floating body (3) may include a main column (3a) and a plurality of auxiliary columns arranged to have substantially the same distance.

[0054] The plurality of auxiliary columns may include a first auxiliary column (3b) and a second auxiliary column (3c). The main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) may be arranged at positions corresponding to the vertices of a triangle. For example, the first column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) may be arranged at positions corresponding to the vertices of an equilateral triangle. In this case, the first distance between the main column (3a) and the first auxiliary column (3b), the second distance between the first auxiliary column (3b) and the second auxiliary column (3c), and the third distance between the second auxiliary column (3c) and the main column (3a) are equal to each other. As described above, the power generation unit (2) may be installed in the main column (3a).

[0055] In another embodiment, the plurality of auxiliary columns may include three or more auxiliary columns. For example, the plurality of auxiliary columns may include a first auxiliary column adjacent to the main column, a second auxiliary column, and a third auxiliary column provided between the first and second auxiliary columns. In this case, the first to third auxiliary columns may be arranged so as to be positioned on a virtual circumference. Furthermore, the plurality of auxiliary columns may include four or more auxiliary columns arranged so as to be positioned on a virtual circumference together with the main column.

[0056] Below, an example is described in which multiple auxiliary columns include a first auxiliary column (3b) and a second auxiliary column (3c).

[0057] The floating body (3) may include a connecting member (30) connecting the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c).

[0058] The connecting member (30) may include a first connecting member (31) connecting the main column (3a) and the first auxiliary column (3b), a second connecting member (32) connecting the main column (3a) and the second auxiliary column (3c), and a third connecting member (33) connecting the first auxiliary column (3b) and the second auxiliary column (3c). The first connecting member (31), the second connecting member (32), and the third connecting member (33) may be arranged to correspond to each side of a triangle. For example, the first connecting member (31), the second connecting member (32), and the third connecting member (33) may be arranged to correspond to each side of an equilateral triangle.

[0059] In another embodiment, the lengths of the first connecting member (31) and the second connecting member (32) are the same, but the length of the third connecting member (33) may be arranged to be longer or shorter than the first connecting member (31) and the second connecting member (32), so as to correspond to each side of an isosceles triangle.

[0060] In another embodiment, the first connecting member (31) and the second connecting member (32) are provided in a linear shape, but the third connecting member (33) may be provided in a convexly curved shape outward based on the above-mentioned area.

[0061] As described above, in embodiments where the number of auxiliary columns is three or more, the number of connecting members (30) may increase correspondingly.

[0062] In embodiments where the number of auxiliary columns is three or more, a plurality of connecting members (30) connecting an auxiliary column to another adjacent auxiliary column may be formed to be curved to form a roughly circular arc shape. In such embodiments, the plurality of connecting members (30) can support external forces more dispersedly, thereby enhancing the supporting capacity of the auxiliary columns.

[0063] The connecting member (30) may be provided in various shapes. For example, as illustrated in FIG. 1, the connecting member (30) may be provided in the shape of a pipe having a rectangular cross-section. Alternatively, the connecting member (30) may be provided in the shape of a pipe having a circular, oval, or polygonal cross-section. Furthermore, the connecting member (30) may be provided in a hollow shape to enhance buoyancy, or may be formed as an integral body without an internal void to more strongly support external forces. This may be appropriately selected in consideration of external factors such as the wind speed and tidal force of the sea where it is installed, and the seawater temperature.

[0064] The connecting member (30) can prevent the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) from moving away from or closer to each other, and can make the floating body (3) structurally stable. The connecting member (30) can prevent the floating body (3) from being damaged by vibration or impact applied to the floating body (3) at sea.

[0065] According to one embodiment, the float (3) may include a pontoon (4) positioned below the gravity direction reference of the connecting member (30).

[0066] In one embodiment, the pontoon (4) may include a first pontoon (4a) connected to the main column (3a), a second pontoon (4b) connected to the first auxiliary column (3b), and a third pontoon (4c) connected to the second auxiliary column (3c). The pontoon (4) may extend from a region between the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) to the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c). For example, the pontoon (4) may extend from a central portion between the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) to the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c).

[0067] One end of the first pontoon (4a) is connected to the main column (3a), and the other end of the first pontoon (4a) can be connected to the second pontoon (4b) and the third pontoon (4c). One end of the second pontoon (4b) is connected to the first auxiliary column (3b), and the other end of the second pontoon (4b) can be connected to the first pontoon (4a) and the third pontoon (4c). One end of the third pontoon (4c) is connected to the second auxiliary column (3c), and the other end of the third pontoon (4c) can be connected to the first pontoon (4a) and the second pontoon (4b). That is, the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be arranged to be connected to each other.

[0068] According to the present disclosure, the pontoon (4) can be provided in an approximately Y-shape. As the pontoon (4) is provided in a Y-shape, the sum of the lengths of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be less than the sum of the lengths of the first connecting member (31), the second connecting member (32), and the third connecting member (33). According to the present disclosure, by providing the structure of the pontoon (4) in an approximately Y-shape, the length of the pontoon (4) can be reduced. Through this, the manufacturing cost of the floating wind power generator can be reduced.

[0069] In addition, the pontoons (4) are arranged in a Y shape, thereby improving the ease of vessel access to the floating wind turbine (1). When the pontoons (4) are arranged in a Y shape, vessels can approach the point where the pontoons (4) meet each other. Therefore, the ease of vessel access can be improved compared to a structure in which the pontoons (4) are arranged in the same manner as the connecting member (30).

[0070] Referring to FIG. 2, a float (3) according to one embodiment may include a ballast space provided to be filled with ballast water. The float (3) may include a column receiving portion and a pontoon receiving portion as a ballast space provided to receive ballast water.

[0071] Specifically, the float (3) may include a main column receiving portion (34) formed inside the main column (3a), a first auxiliary column receiving portion (35) formed inside the first auxiliary column (3b), and a second auxiliary column receiving portion (36) formed inside the second auxiliary column (3c). In addition, the float (3) may include a first pontoon receiving portion (41) formed inside the first pontoon (4a), a second pontoon receiving portion (42) formed inside the second pontoon (4b), and a third pontoon receiving portion (43) formed inside the third pontoon (4c).

[0072] According to one embodiment, as illustrated in FIG. 2, the first pontoon receiving portion (41), the second pontoon receiving portion (42), and the third pontoon receiving portion (43) may form separate spaces. In other words, the first pontoon receiving portion (41), the second pontoon receiving portion (42), and the third pontoon receiving portion (43) may not be connected to each other.

[0073] According to one embodiment, the first pontoon receiving portion (41) may be connected to the main column receiving portion (34). The second pontoon receiving portion (42) may be connected to the first auxiliary column receiving portion (35). The third pontoon receiving portion (43) may be connected to the second auxiliary column receiving portion (36).

[0074] In contrast, the first pontoon receiving portion (41), the second pontoon receiving portion (42), and the third pontoon receiving portion (43) may be arranged so that at least two or more of them are connected. For example, the first pontoon receiving portion (41), the second pontoon receiving portion (42), and the third pontoon receiving portion (43) may be connected to each other. In contrast, the second pontoon receiving portion (42) and the third pontoon receiving portion (43) may be connected to each other, and the first pontoon receiving portion (41) may not be connected to the second pontoon receiving portion (42) and the third pontoon receiving portion (43).

[0075] Additionally, the first pontoon receiving portion (41) and the main column receiving portion (34) may not be connected to each other. Similarly, the second pontoon receiving portion (42) and the first auxiliary column receiving portion (35) may not be connected to each other. The third pontoon receiving portion (43) and the second auxiliary column receiving portion (36) may not be connected to each other.

[0076] Unlike that shown in Fig. 2, the main column (3a) is provided to support the power generation unit (2), and thus may not include a ballast space. That is, the main column (3a) may not include a main column receiving portion (34).

[0077] FIG. 3 is a plan view illustrating a floating body separated from a floating wind power generator according to one embodiment.

[0078] FIG. 4 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0079] Referring to FIG. 4, in a floating wind power generator according to one embodiment, the first pontoon (3a), the second pontoon (3b), and the third pontoon (3c) may have the same length.

[0080] Referring to Fig. 4, the diameter of the main column (3a) is referred to as the first diameter (d1), the diameter of the first auxiliary column (3b) is referred to as the second diameter (d2), and the diameter of the second auxiliary column (3c) is referred to as the third diameter (d3).

[0081] In one embodiment, the first diameter (d1), the second diameter (d2), and the third diameter (d3) may be the same. However, the present invention is not limited thereto. The first diameter (d1), the second diameter (d2), and the third diameter (d3) may be different from each other. In addition, two of the first diameter (d1), the second diameter (d2), and the third diameter (d3) may be the same, and the remaining one may be different. For example, the first diameter (d1) may be larger than the second diameter (d2) and the third diameter (d3), and the second diameter (d2) and the third diameter (d3) may be the same. The first diameter (d1) of the main column (3a) may be larger than the second diameter (d2) and the third diameter (d3) to support the power generation unit (2).

[0082] Referring to FIG. 4, the length of the first pontoon (41) is referred to as the first length (PL1), the length of the second pontoon (42) is referred to as the second length (PL2), and the length of the third pontoon (43) is referred to as the third length (PL3). In addition, the width of the first pontoon (41) is referred to as the first width (PW1), the width of the second pontoon (42) is referred to as the second width (PW2), and the width of the third pontoon (43) is referred to as the third width (PW3).

[0083] According to one embodiment, the first length (PL1), the second length (PL2), and the third length (PL3) may be provided to be identical. In addition, the first width (PW1), the second width (PW2), and the third width (PW3) may be provided to be identical.

[0084] Unlike what is shown in Fig. 4, the first length (PL1), the second length (PL2), and the third length (PL3) may be provided differently. The first width (PW1), the second width (PW2), and the third width (PW3) may be provided differently.

[0085] The main column (3a) supports the power generation unit (2), and therefore has a greater load than the first auxiliary column (3b) and the second auxiliary column (3c). In order to maintain the overall balance of the floating wind turbine (1), ballast water may be filled in the first auxiliary column (3b) and the second auxiliary column (3c). At this time, if ballast water is filled only in the first auxiliary column (3b) and the second auxiliary column (3c), the center of gravity (COG) of the floating wind turbine (1) becomes relatively high, which may reduce the balance restoring force at sea.

[0086] According to the present disclosure, ballast water can be filled not only in the first auxiliary column (3b) and the second auxiliary column (3c), but also in the first pontoon receiving portion (41), the second pontoon receiving portion (42), and the third pontoon receiving portion (43). In particular, by filling the second pontoon receiving portion (42) and the third pontoon receiving portion (43) with ballast water, the center of gravity (COG) of the floating wind turbine (1) can be lowered. Through this, the balance restoring force of the floating wind turbine (1) at sea can be improved. In other words, the dynamic motion performance of the floating wind turbine (1) can be improved.

[0087] According to the present disclosure, the lengths (PL1, PL2, PL3) of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be changed to improve the dynamic motion performance of the floating wind turbine (1). In addition, the widths (PW1, PW2, PW3) of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be changed to improve the dynamic motion performance of the floating wind turbine (1).

[0088] FIG. 5 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0089] Referring to FIG. 5, in a floating wind power generator according to one embodiment, a first length (PL1) of a first pontoon (3a) may be provided to be greater than a second length (PL2) of a second pontoon (3b) and a third length (PL3) of a third pontoon (3c). In addition, the second length (PL2) of the second pontoon (3b) and the third length (PL3) of the third pontoon (3c) may be provided to be the same.

[0090] In Fig. 5, an example is shown in which the first width (PW1), the second width (PW2), and the third width (PW3) are provided identically. However, as described above, the first width (PW1), the second width (PW2), and the third width (PW3) may be provided differently, or only one of the first width (PW1), the second width (PW2), and the third width (PW3) may be provided differently. For example, the second width (PW2) and the third width (PW3) may be provided identically, and the first width (PW1) may be provided to be larger or smaller than the second width (PW2) and the third width (PW3).

[0091] FIG. 6 is a plan view of a column and a pontoon in a floating wind turbine according to one embodiment.

[0092] Referring to Fig. 6, in a floating wind power generator according to one embodiment, the first length (PL1) of the first pontoon (3a) may be set shorter than the second length (PL2) of the second pontoon (3b) and the third length (PL3) of the third pontoon (3c). The second length (PL2) of the second pontoon (3b) and the third length (PL3) of the third pontoon (3c) may be set to be the same.

[0093] In Fig. 6, an example is shown in which the first width (PW1), the second width (PW2), and the third width (PW3) are provided identically. However, as described above, the first width (PW1), the second width (PW2), and the third width (PW3) may be provided differently, or only one of the first width (PW1), the second width (PW2), and the third width (PW3) may be provided differently. For example, the second width (PW2) and the third width (PW3) may be provided identically, and the first width (PW1) may be provided to be larger or smaller than the second width (PW2) and the third width (PW3).

[0094] As described above, according to the present disclosure, the lengths (PL1, PL2, PL3) and widths (PW1, PW2, PW3) of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be individually adjusted. By individually adjusting the lengths and widths of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c), it is possible to optimize the motion performance of the floating body (2).

[0095] In addition, although not specifically indicated in the drawing, the heights of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) can be individually adjusted. By individually adjusting the heights of the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c), the motion performance of the floating body (2) can be optimized.

[0096] As described above, the first pontoon (4a), the second pontoon (4b), and the third pontoon (4c) are formed to extend from an area provided on the inner side of the main column (3a), the first auxiliary column (3b), and the second auxiliary column (3c) to each column, thereby minimizing interference between the lower part of a ship approaching the floating wind power generator (1) and the float (2). In other words, since the pontoon (4) is provided in an approximately Y shape, interference between the lower part of a ship approaching the floating wind power generator (1) and the float (2) can be minimized.

[0097] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A power generation unit that performs wind power generation; and A floating body provided to support the above-mentioned power generation unit; including; The above floating body, Main column supporting the above development section; A plurality of auxiliary columns provided around the main column; A plurality of connecting members each connecting the main column and the plurality of auxiliary columns; and A floating wind power generator including a plurality of pontoons, which are provided below the plurality of connecting members based on the direction of gravity and support the dead weight of the main column and the plurality of auxiliary columns.

2. In paragraph 1, A floating wind power generator in which the above plurality of pontoons are each connected to the main column and the plurality of auxiliary columns from an area between the main column and the plurality of auxiliary columns.

3. In paragraph 1, The above plurality of pontoons are a floating wind power generation device connected to each other in the above one area.

4. In paragraph 1, A floating wind power generator in which the above plurality of pontoons have the same length.

5. In paragraph 1, The above plurality of auxiliary columns each include a first auxiliary column and a second auxiliary column adjacent to the main column, A floating wind power generator, wherein the plurality of pontoons include a first pontoon connected to the main column, a second pontoon connected to the first auxiliary column, and a third pontoon connected to the second auxiliary column.

6. In paragraph 5, The above second pontoon and the above third pontoon have the same length, A floating wind power generator wherein the first pontoon has a longer length than the second pontoon and the third pontoon.

7. In paragraph 5, The above second pontoon and the above third pontoon have the same length, A floating wind power generator wherein the first pontoon has a shorter length than the second pontoon and the third pontoon.

8. In paragraph 5, A floating wind power generator wherein the first pontoon, the second pontoon, and the third pontoon have the same width.

9. In paragraph 5, The above second pontoon and the above third pontoon have the same width, A floating wind power generator in which the first pontoon has a narrower width than the second pontoon and the third pontoon.

10. In paragraph 1, The above plurality of auxiliary columns each include a first auxiliary column adjacent to the main column, a second auxiliary column, and a third auxiliary column provided between the first auxiliary column and the second auxiliary column, The above first to third auxiliary columns are floating wind power generators positioned on a virtual circle.

11. In paragraph 10, A floating wind power device wherein the plurality of auxiliary columns further include N auxiliary columns arranged on the virtual circle.

12. In paragraph 1, The first pontoon includes a first pontoon receiving portion formed inside the first pontoon to receive ballast water, The second pontoon includes a second pontoon receiving portion formed inside the second pontoon to receive ballast water, A floating wind power generator including a third pontoon receiving portion formed inside the third pontoon to receive ballast water.

13. In paragraph 12, A floating wind power generator in which the first pontoon receiving section, the second pontoon receiving section, and the third pontoon receiving section form separate spaces from each other.

14. In paragraph 12, A floating wind power generator, wherein at least two of the first pontoon receiving section, the second pontoon receiving section, and the third pontoon receiving section are connected to each other so that ballast water can move.

15. In paragraph 12, The above main column includes a main column receiving portion provided to receive ballast water, The above first auxiliary column includes a first auxiliary column receiving portion provided to receive ballast water, A floating wind power generator including a second auxiliary column receiving portion configured to receive ballast water, wherein the second auxiliary column is provided with a ballast water receiving portion.

16. In paragraph 15, The above main column receiving section and the above first pontoon receiving section are connected to each other, The above first auxiliary column receiving section and the above second pontoon receiving section are connected to each other, A floating wind power generator in which the second auxiliary column receiving section and the third pontoon receiving section are connected to each other.

17. A power generation unit that performs wind power generation; and A floating body provided to support the above-mentioned power generation unit; including; The above floating body, Main column supporting the above development section; A first auxiliary column and a second auxiliary column provided around the main column; A connecting member including a first connecting member connecting the main column and the first auxiliary column, a second connecting member connecting the main column and the second auxiliary column, and a third connecting member connecting the first auxiliary column and the second auxiliary column; and A floating wind power generator comprising: a pontoon, which is provided below the connecting member based on the direction of gravity and supports the dead weight of the main column, the first auxiliary column, and the second auxiliary column, the pontoon including a first pontoon connected to the main column from an area between the main column, the first auxiliary column, and the second auxiliary column, a second pontoon connected to the first auxiliary column from the area, and a third pontoon connected to the second auxiliary column from the area;

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