Offshore floating platform for wind driven generator

Abstract

Described herein is an offshore floating platform comprising: a plurality of wind generators comprising: a wind tower having a longitudinal extension and provided with a first end and a second end; the blade type wind driven generator is located at the first end; an engagement base at the second end; a connecting part connecting the two wind generators and comprising at least one connecting element; wherein each engagement base engages with the connecting element such that each wind tower can be moved independently in a direction substantially parallel to the longitudinal development axis of the wind tower.

Description

Technical Field

[0001] The present invention generally relates to the field of renewable energy. In particular, the present invention relates to an offshore floating platform including a wind turbine. Background Art

[0002] As is known to all, there are currently a variety of solutions for building offshore floating platforms for wind turbines. For example, experimental solutions known as "spar buoy" platforms and "tension leg" platforms (TLP) have been developed, as well as "semi-submersible" platforms with triangular structures.

[0003] Each of these solutions has some disadvantages. For example, the Applicant notes that the installation of wind towers offshore is very difficult and particularly costly when using the spar-buoy solution, due to the inherent environmental conditions; as for the tension-leg solution, the Applicant notes that further difficulties are encountered due to the need to obtain, in economically effective and safe conditions, the partial submergence of the structure, which is necessary for the solution to work; on the other hand, the triangular or semi-submersible solutions are very expensive.

[0004] The Applicant also notes that these solutions allow the installation and use of only one wind tower per platform. Installing more than one wind tower on a single structure inevitably brings problems with the efficiency of the generator. These problems are due, for example, to the inevitable slipstream alignment of multiple towers, or to the giantness problem, since the need to maintain a proper slipstream distance between consecutive wind towers implies the use of huge and expensive structures.

[0005] Unfortunately, the above limitations result in very large ocean areas having to be covered to meet today's high power requirements.

[0006] The Applicant notes that, in order to overcome the latter problem, floating platforms of different configurations have been developed which can host a number of wind towers. Unfortunately, such platforms present a number of problems, ranging from slipstream disturbances that affect certain types of configurations, to the difficulty of building structures that are both economical and able to withstand the stresses caused by offshore installation: such structures can be hundreds of meters long, i.e. longer than many ships, and the strength aspects are not negligible, especially in conjunction with the need to keep costs at a sustainable level in order to achieve cost-effective power generation.

[0007] Document CA 2 747 541 A describes a wind turbine located in a plane, optionally anchored by means of a mooring system.

[0008] Document CN202110669421A describes wind turbines arranged in multiple rows.

[0009] Document SE2015050740W describes a wind turbine located in a plane, which is anchored so as to be able to place itself in an optimal position depending on the wind direction.

[0010] Document US2010052998W describes wind turbines arranged in multiple rows and planes, or arranged on a floating structure consisting of nodes rigidly connected to each other.

[0011] Document US202016882514A describes wind turbines arranged in a triangular manner, in which the platform can be correctly oriented solely by the wind under the force exerted by the wind on the generator without the help of any auxiliary components, resulting in a large error range in the optimal position.

[0012] Document US201213451249A describes that wind turbines are arranged in multiple rows to form a "V" shape.

[0013] Document US201514681025A describes a wind turbine placed along a circumference.

[0014] Document DE 32 24 976 A1 describes wind turbines without axis parallelism constraints, which are arranged along the circumference and connected by means of simple rods that are articulated to one another (in contrast to a parallelogram connection).

[0015] Document US 2015 / 259050 A1 describes a wind turbine located on a regular polygon, having an adjustable polygonal geometry.

[0016] Document DE 102 19 062 A1 describes a large number of rotor generators arranged in groups at different heights: these generators appear to be connected by means of simple hinges or ball joints.

[0017] Document EP 3 885 575 A1 claims to use sensors and computers to orient the rotor, blades and nacelle according to the wind direction, taking into account the position of the platform.

[0018] Document NL 1 008 318 C2 describes a wind turbine located on a regular polygon, which can be rotated by means of a propeller engine.

[0019] Document US 2011 / 074155 A1 describes a single-generator floating platform that can be moved laterally by means of a propeller engine. Summary of the invention

[0020] An object of the present invention is to provide an articulated floating platform for a wind turbine that can accommodate multiple generators simultaneously without loss of efficiency due to slipstream.

[0021] Another object of the present invention is to provide an articulated floating platform for a wind turbine which is durable and able to withstand extreme offshore weather conditions.

[0022] In particular, the present invention provides an offshore floating platform, the offshore floating platform comprising:

[0023] - a plurality of wind turbines, each wind turbine comprising: a wind tower having a longitudinal extension and a first end and a second end; a blade-type wind turbine located at the first end; and a joint base located at the second end;

[0024] - A connecting part, which couples two wind turbines, and which comprises at least one connecting element.

[0025] Each engagement base is engaged with the connection element in such a way that each wind tower can be independently moved in a direction substantially parallel to the longitudinal development axis of the wind tower.

[0026] Advantageously, the articulated construction (ie the presence of connection parts allowing a substantially vertical movement of the wind tower) allows the platform to adapt itself to wave movements which may be more or less intense, for example caused by severe weather conditions, thereby increasing the mechanical strength of the entire structure.

[0027] In the present invention, the term "wind generator" generally refers to an energy generator that utilizes wind energy (also called an "air-driven generator"), such as any type of wind turbine, whether with a vertical axis or a horizontal axis. The applicant has observed that, advantageously, vertical axis wind turbines allow the construction of more compact platforms because they require a shorter slipstream distance.

[0028] Advantageously, the substantially vertical movement produced by the wave motion of the wind tower induces a vertical velocity component on the rotor which can be better absorbed by the rotor of a vertical-axis wind turbine.

[0029] Preferably, each connecting portion further comprises at least one intermediate node joining two consecutive connecting elements.

[0030] Preferably, each intermediate node is freely movable in a direction substantially parallel to the longitudinal development axis of the wind tower.

[0031] The substantial vertical movements of the individual intermediate nodes and / or the individual wind towers are preferably independent of each other.

[0032] The applicant notes that according to the present invention, the expression "substantially vertically movable independently of one another" means, for example, that two wind towers and / or two intermediate nodes and / or an intermediate node and a wind tower can be substantially vertically movable in two opposite directions. For example, due to the wave motion of the sea water, the intermediate node may move vertically downward (at the bottom of the wave) while the wind tower may move vertically upward (at the top of the wave).

[0033] Preferably, each intermediate node is connected to two corresponding connection elements such that the first connection element and the second connection element are arranged in a plan view to form an angle of 120° to 230°, preferably an angle of 180°.

[0034] Advantageously, the articulated floating platform system allows for multiple wind turbines to be mounted on the same structure without being affected by each other's slipstreams.

[0035] Preferably, each connecting element is engaged with:

[0036] - an intermediate node or joint base at the first end, and

[0037] - A further intermediate node or junction base at the second end.

[0038] Advantageously, two adjacent wind towers may be connected by means of a plurality of intermediate nodes, thereby allowing the use of connection elements having a longitudinal development length that is shorter than the length of the wind turbine blade.

[0039] Preferably, each connecting element comprises a plurality of tubular elements parallel to each other.

[0040] Advantageously, the use of a plurality of parallel tubular elements makes it possible to obtain a strong structure resistant to any movement of the wind tower that could compromise the stability of the structure.

[0041] Preferably, a plurality of tubular elements and the connecting plate form an articulated parallelogram. In other words, each connecting element is connected to two plates, thereby forming an articulated parallelogram.

[0042] Even more preferably, each connecting element comprises at least three tubular elements parallel to each other.

[0043] Preferably, each tubular element is joined at one of its ends to the connecting plate by means of a hinge or a ball and socket joint or a universal joint.

[0044] Advantageously, each articulated parallelogram allows each intermediate node and each wind tower to move substantially vertically, i.e., along a direction substantially parallel to an axis parallel to the longitudinal development axis of the wind tower. This vertical movement enables the platform to adapt to the wave motion of the sea water, thereby preventing the platform from collapsing.

[0045] Preferably, the connecting plates (usually welded) may be connected to the intermediate nodes and / or the joint base of the wind tower by means of hinge-type connections (not shown).

[0046] Advantageously, the rotation axis of such a hinge is perpendicular to the longitudinal development axis of the wind tower, thereby allowing the wind tower to be slightly rotated, for example around said vertical axis, within an angle range of -10° to +10°, more preferably -5° to +5°, thereby protecting the connecting element from torsional stresses caused by adverse sea conditions.

[0047] Advantageously, the platform according to the invention comprising a vertically movable intermediate node and a wind tower connected to each other by means of an articulated parallelogram ensures the parallelism of the wind tower axes in such a way that these axes are always kept substantially perpendicular to the mean sea level.

[0048] In particular, advantageously, the Applicant unexpectedly discovered that an articulated parallelogram structure similar to the one described above allows the angle between the longitudinal development axis of the wind tower (i.e. the vertical axis) and the longitudinal development axis of the tubular element to vary in the range of 70° to 110°, preferably in the range of 80° to 100°, without endangering the structural stability of the floating platform, which is therefore also suitable for offshore installation.

[0049] Advantageously, with the same installed power, the sea area required is significantly reduced, which is beneficial to both ecology and navigation.

[0050] Advantageously, the presence of tubular elements as described above makes it possible to build a floating platform composed of assemblable components, each of which is much smaller than the entire structure, so that the various elements (i.e. intermediate nodes, wind turbines, connecting elements and connecting plates) can be manufactured separately and then assembled together.

[0051] Preferably, the tubular elements of the respective connecting elements are connected to one another by means of respective elastic elements.

[0052] Preferably, the elastic elements cooperate with each other.

[0053] Preferably, the elastic element is selected from: a traction spring, a spring cylinder, a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0054] Advantageously, such elastic element exerts an elastic force that resists the vertical movement caused by the wave motion. In other words, such elastic element avoids any vertical movement of the intermediate node and / or the wind tower that could endanger the floating platform.

[0055] Advantageously, such an elastic element may also allow the system to return to its initial geometrical configuration in the absence of any stresses caused by wave motions. Furthermore, such an elastic element may constitute a system for damping the relative movement of the tubular elements or may act as a stop for said relative movement.

[0056] Preferably, the platform further comprises an anchoring element engaged with the intermediate node or the engagement base; the anchoring element being adapted to anchor the platform to the seafloor.

[0057] Preferably, the anchoring element comprises:

[0058] - cylindrical body;

[0059] - a slewing ring assembled to said cylindrical body;

[0060] - Multiple anchoring cables;

[0061] The swivel ring includes a plurality of hook seats, each hook seat being adapted to engage a first end of a corresponding anchor cable.

[0062] Advantageously, the anchoring elements allow the platform to rotate about the anchoring points.

[0063] Preferably, the cylindrical body further comprises an upper stopper and a lower stopper; wherein the upper stopper and the lower stopper define a portion of the body along which the slewing ring is free to slide.

[0064] Advantageously, a slewing ring which is freely slidable along a portion of the body will allow the anchoring element to follow the movement of the waves as it rotates.

[0065] Preferably, each wind tower extends through a respective engagement base, thereby presenting a lower portion; the lower portion being provided with a damping element, preferably in the form of a perforated plate.

[0066] Preferably, the damping element is arranged perpendicular to the longitudinal development axis of the respective wind tower.

[0067] Preferably, at least one intermediate node comprises a rudder driven by means of an actuator.

[0068] Preferably, the lower part of at least one wind tower is equipped with a motor, more preferably a propeller motor.

[0069] Preferably, the platform also includes a control system. The control system includes:

[0070] - one or more wind direction sensors;

[0071] - one or more processors configured to:

[0072] - receiving information about wind direction from the wind direction sensor;

[0073] - Based on said information, the various actuators and the various propeller engines are controlled so as to orient the platform according to the wind direction by rotating it around the anchoring centre.

[0074] Advantageously, by rotating the platforms according to wind direction, high power can be obtained from each wind turbine, thus making it cost-effective to install energy storage and / or conversion equipment on each installed platform, thereby saving significant costs.

[0075] Preferably, the processor is contained in a box-shaped body that is coupled to an intermediate node or wind tower. Even more preferably, the box-shaped body may contain all auxiliary equipment electrically connected to the wind turbine and / or a system for storing, converting and processing the energy produced (e.g., an onboard electrolysis system for producing hydrogen and oxygen).

[0076] Preferably, the box-shaped body is joined to the wind tower or the intermediate node by means of a further connection element and a further connection plate, which preferably form an articulated parallelogram.The connection element comprises at least two tubular elements parallel to each other.

[0077] Advantageously, since the platform according to the invention reduces all pitching and rolling moments of the structure, it can be applied in all normal and special maintenance situations, such as ship mooring and docking and onboard operations, where changes in working angles must be minimized.

[0078] Furthermore, for specific applications, such as the production of hydrogen and oxygen using an onboard electrolysis system, such a system ensures that the levels of the liquids used in the production system experience smaller fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] The present invention will become more apparent from the following detailed description, which is provided by way of non-limiting example only, and in which reference is made to the accompanying drawings, in which:

[0080] Figure 1 is a perspective view of a multi-generator articulated floating platform according to the present invention, wherein certain components are not shown for the sake of clarity;

[0081] Figure 2 yes Figure 1 The main view of the floating platform;

[0082] Figure 3 yes Figure 2 an enlarged view of a detail of , showing an anchoring element according to a preferred embodiment of the present invention;

[0083] Figure 4 yes Figure 2 an enlarged view of a detail showing an intermediate node according to a preferred embodiment of the present invention;

[0084] Figure 5 yes Figure 2 A magnified view of the detail showing the motor located below sea level and inserted beneath the wind turbine;

[0085] Figure 6 yes Figure 5 A perspective view showing a damping element inserted below a wind turbine;

[0086] Figure 7 yes Figure 1 A side view of the platform;

[0087] Figure 8 is a side view of a platform according to a second embodiment of the present invention;

[0088] Fig. 9 is a perspective view of an alternative anchoring system for a platform according to the present invention;

[0089] Fig.10 is a detailed view of the connected part; in particular, Fig.10 A preferred embodiment of the connection element between the intermediate node and the wind tower is shown.

[0090] The drawings are not drawn to scale. DETAILED DESCRIPTION

[0091] Below, the terms "above", "below", "upper", "lower", "parallel", "vertical", "horizontal", "vertical" and generally all terms indicating position and direction refer to the drawings and this description, but should not be regarded as limiting the actual implementation of the present invention.

[0092] First refer to Figure 1 and Figure 2 The present invention provides an offshore floating platform, hereinafter indicated by reference numeral 100.

[0093] The platform 100 includes a plurality of wind turbines 200, for example, two or more wind turbines 200. Each wind turbine 200 includes: a wind tower 210 having a longitudinal extension and provided with a first end and a second end; a blade-type wind turbine 211 located at the first end; and a joint base 212 located at the second end. Preferably, the blade-type wind turbines 211 are oriented in the same direction. In other words, the rotation planes of the blades of the wind turbines 200 are parallel to each other.

[0094] The platform 100 further includes at least one connection portion 300 that couples the two wind turbines 200 .

[0095] Preferably, each connection portion 300 includes: a plurality of connection elements 310a, 310b and at least one intermediate node 320. Each intermediate node 320 is connected to two consecutive connection elements 310a, 310b.

[0096] Each connecting element 310a, 310b engages with the following elements:

[0097] - an intermediate node 320 and a joint base 212 of a corresponding wind tower 210; or

[0098] - two consecutive intermediate nodes 320 (not shown); or

[0099] - Two consecutive engagement seats 212 (not shown).

[0100] In particular, each intermediate node 320 and / or each joint base 212 is engaged with the connection elements 310a, 310b so that each wind tower 210 and / or each intermediate node 320 can move freely in a direction substantially parallel to the longitudinal development axis of the wind tower 210.

[0101] Preferably, if Figure 1 and Figure 2 As shown, each intermediate node 320 is connected to two corresponding connection elements 310a, 310b, so that the first connection element 310a and the second connection element 310b are arranged to form an angle of 120° to 240°, more preferably 180° in a plan view.

[0102] like Figure 2 , Figure 3 and Figure 4 As shown, each connecting element 310a, 310b is engaged with the following items by means of a corresponding connecting plate 400:

[0103] - an intermediate node 320 at the first end; and

[0104] - A further intermediate node 320 or engagement base 212 at the second end.

[0105] Applicants observe that the intermediate node 320 may not be present and the connecting elements 310a, 310b may directly connect the two engagement bases 212. This embodiment will be described in detail below.

[0106] In particular, each connecting element 310a, 310b includes a plurality of tubular elements 311 parallel to each other. The plurality of tubular elements 311 and the two connecting plates 400 form an articulated parallelogram.

[0107] Reference Fig.10Preferably, each joint base 210 further comprises a float 250. The floats 250 of different joint bases 210 may preferably be different from each other, and may optionally be partially or fully ballasted. The float 250 enables the forces acting on the wind tower to achieve the desired balance.

[0108] Each connecting element 310a, 310b includes at least two (for example, three) tubular elements 311 that are parallel to each other.

[0109] As described above, each tubular element 311 is engaged with the connecting plate 400 at the respective end. Figure 3 , Figure 4 and Fig.10 As shown, each tubular element 311 is engaged with the first connecting plate 400 at a first end and engaged with the second connecting plate 400 at a second end. In particular, each tubular element 311 is engaged with the connecting plate 400 by means of a hinge or a ball joint or a universal joint.

[0110] The Applicant observes that the hinges, ball joints or universal joints are designed and mounted so as to allow the movement of each tubular element 311 in the plane in which the axis of longitudinal development of the wind tower 210 lies.

[0111] Preferably, the tubular elements 311 of the respective connecting elements 310a, 310b are connected to each other by means of respective elastic elements 312. Fig.10 As shown, preferably, the elastic element can be: a traction spring, a spring cylinder, a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0112] Refer again Figure 2 and Fig. 9 , the platform 100 further comprises an anchoring element 500. The anchoring element 500 is engaged with the intermediate node 320 or the engagement base 212. The anchoring element 500 is adapted to anchor the platform to the seafloor (M).

[0113] Subsea anchoring systems are known and will not be described in detail here.

[0114] like Figure 1 and Figure 2 As shown, the anchoring element 500 preferably comprises:

[0115] - a cylindrical body 510;

[0116] - a swivel ring 520 assembled onto said cylindrical body 510;

[0117] - A plurality of anchoring cables 522 .

[0118] The slewing ring 520 includes a plurality of hook seats 521, each hook seat 521 being adapted to engage a first end of a corresponding anchor cable 522. A second end of each anchor cable 522 is anchored to the seafloor M.

[0119] Preferably, if Figure 8 As shown, the cylindrical body 510 further includes an upper stopper 511 and a lower stopper 512. The upper stopper 511 and the lower stopper 512 define a portion of the body along which the slewing ring 520 can slide freely. Preferably, the distance between the upper stopper 511 and the lower stopper 512 is 1.1 times, 1.5 times, or 2 times greater than the thickness 3 of the slewing ring 520.

[0120] Preferably, the anchoring system is joined to the intermediate node 320 or the joint base 212 by means of a connecting portion 300c which is also an articulated parallelogram designed as described above, i.e., composed of a plurality of parallel tubular elements 311, each of which is fastened to two connecting plates 400. Or, for example, Figure 1 and Figure 7 As shown, the connection portion 300 c is composed of two tubular elements 311 fastened at one end thereof to the cylindrical body 510 and at the other end to the engagement base 212 of the wind tower 210 .

[0121] Alternatively, if Figure 8 As shown, the connecting portion 300c may be comprised of a rigid member (eg, a tubular shaft).

[0122] Reference Figure 5 and Figure 6 Preferably, each wind tower 210 extends through the respective joint base 212, thereby presenting a lower portion 212'. The lower portion 212' is equipped with a damping element 215. The damping element 215 is designed as a perforated plate, preferably arranged perpendicularly to the longitudinal development axis of the respective wind tower 210.

[0123] Preferably, the lower part 210' of at least one wind tower 210 comprises a motor 218, preferably a propeller engine; for example, two wind towers 210 comprise respective motors 218 located at the lower part 210' of the respective wind tower 210. In particular, the lower part 210' has a hollow part, which is substantially perpendicular to the longitudinal development axis of the wind tower 210, in which a propeller driven by the engine is accommodated.

[0124] Reference Figure 2 and Figure 4According to a preferred embodiment, at least one intermediate node 320 (for example, two intermediate nodes 320) includes a rudder 321 driven by means of an actuator 322. The actuator 322 can be, for example, an electric, hydraulic, pneumatic, linear or rotary actuator. For example, the actuator 322 is an electric motor coupled to a gear reducer housed in the body of the corresponding intermediate node 320.

[0125] Reference Figure 1 and Figure 7 , the platform 100 preferably also includes a control system 110 .

[0126] The control system 110 includes:

[0127] - at least one wind direction sensor 111, such as an anemometer / wind vane or an orientable sail;

[0128] - at least one processor configured to:

[0129] - receiving information about wind direction from the wind direction sensor 111;

[0130] - Controlling the various actuators 322 and the various propeller engines 218 on the basis of said information so as to orient the platform 100 according to the wind direction by rotating the platform 100 about the anchoring centre O.

[0131] Preferably, the processor is contained in a box-shaped body coupled to the intermediate node 320 or the wind tower 210. Even more preferably, the box-shaped body may house all auxiliary equipment electrically connected to the wind turbine 200 and / or systems for storing, converting and processing the generated energy.

[0132] Systems for storing, converting and processing the generated energy are known and will not be described in detail here.

[0133] Preferably, at least one wind direction sensor 111 is located on the box-shaped body of the control system 110, or on the top of the wind tower 210. For example, a corresponding anemometer / wind vane is located on the top of the wind tower 210, and an orientable sail is located on the box-shaped body of the control system 110.

[0134] Preferably, if Figure 7As shown, the box-shaped body is connected to the wind tower 210 (or the intermediate node 320) by means of an additional connection element 300a and an additional connection plate 400, which preferably form an articulated parallelogram. The additional connection element 300a comprises at least two tubular elements parallel to each other, for example three tubular elements connected to each other as described above. For example, the box-shaped body has a support at its bottom comprising a connection plate 400, which is connected to at least two tubular elements by means of corresponding hinges or ball joints or universal joints connecting the first ends of the respective tubular elements; the second end of each of such tubular elements is connected to the connection plate 400 of the wind tower 210 or the intermediate node 320 by means of additional corresponding hinges or ball joints or universal joints.

[0135] Preferably, each tubular element 311 and each intermediate node 320 are made of steel and are hollow inside so as to be able to float. Preferably, the volume and inner cavity size of each tubular element 311, each intermediate node 320 and each float 250 (if present) should be able to support its own weight and the weight of multiple wind turbines 200 during navigation, as well as the weight of all accessories required to ensure the normal operation of the entire system.

[0136] According to an alternative embodiment (not shown), the connection part 300 connecting two wind turbines 210 can be constructed as a plurality of parallel tubular elements 311, such as two tubular elements 311 or three tubular elements 311. The length of each tubular element 311 is greater than twice the length of the blade of the wind turbine 200.

[0137] Each tubular element 311 is engaged with the engagement base 212 of the first wind tower 210 at a first end thereof, and is engaged with the engagement base 212 of the second wind tower 210 at a second end thereof.

[0138] In particular, each tubular element 311 is joined at the respective ends to two connecting plates 400 by means of a hinge or a ball and socket joint or a universal joint.

[0139] In other words, the at least two tubular elements 311 and the at least two connecting plates 400 form an articulated parallelogram that allows the two wind towers 210 to move independently in a substantially vertical direction, thereby following the wave motion.

[0140] Preferably, the plurality of tubular elements 311 linking adjacent wind towers 210 are connected to each other by means of corresponding elastic elements 312, which are preferably selected from: traction springs, spring cylinders, hydraulic cylinders, pneumatic cylinders or electric cylinders.

[0141] The Applicant observes that the platform 100 may include a connection portion 300 connecting two wind towers 210, which connection portion 300 consists only of a plurality of tubular elements 311, as described above, or consists of two consecutive connection elements 310a, 310b connected to each other by means of an intermediate node 320. The Applicant observes that when one intermediate node 320 is used to connect two wind towers 210, it will be necessary to use such tubular elements 311: the length of which is greater than the length of the blades of the wind turbines 200, in order to avoid any contact between the blades of adjacent wind turbines 200. On the contrary, when a plurality of intermediate nodes 320 are used, the length of the tubular elements 311 used may be equal to or shorter than the blade length.

Claims

1. An offshore floating platform (100), comprising: - A plurality of wind turbines (200), each wind turbine (200) comprising: a wind tower (210) having a longitudinal extension and provided with a first end and a second end; a blade-type wind turbine (211) located at the first end; and a joint base (212) located at the second end; - a connecting part (300), the connecting part coupling two wind turbines (210), the connecting part comprising at least one connecting element (310a, 310b); wherein each engagement base (212) is engaged with the connection elements (310a, 310b) in a manner such that each wind tower (210) can independently move in a direction substantially parallel to a longitudinal development axis of the wind tower (210); Wherein, each connection part further includes at least one intermediate node (320); Each intermediate node (320) is connected to two consecutive connection elements (310a, 310b); wherein each intermediate node (320) is free to move in a direction substantially parallel to the longitudinal development axis of the wind tower (210) in a manner substantially independent of the substantially vertical movement of another intermediate node (320) and / or the wind tower (210); Wherein, each connecting element (310a, 310b) is connected with the following items by means of a corresponding connecting plate (400): - an intermediate node (320) or engagement base (212) at the first end; and - a further intermediate node (320) or a further engagement base (212) at the second end; Wherein, each connecting element (310a, 310b) comprises a plurality of tubular elements (311) parallel to each other; wherein the plurality of tubular elements (311) and the connecting plate (400) form a hinged parallelogram; Wherein, each connecting element (310a, 310b) comprises at least two tubular elements (311) parallel to each other; Each tubular element (311) is connected to a connecting plate (400) at one end thereof by means of a hinge.

2. The platform (100) according to claim 1, wherein: The tubular elements (311) of the corresponding connecting elements (310a, 310b) are connected to each other by means of corresponding elastic elements (312), preferably, the elastic elements are selected from: traction springs, spring cylinders, hydraulic cylinders, pneumatic cylinders or electric cylinders.

3. The platform (100) according to any one of the preceding claims, wherein: The platform (500) further comprises an anchoring element (500) engaged with one end of the connecting portion (300), the anchoring element (500) being adapted to anchor the platform to the sea floor (M).

4. The platform (100) according to any one of claims 1 to 3, wherein: - at least one intermediate node (320) comprises a rudder (321) driven by means of an actuator (322); - the bottom part (210') of at least one wind tower (210) is equipped with a propeller engine (218); The platform (100) further comprises a control system (110), wherein the control system comprises: - at least one wind direction sensor (111); - at least one processor configured to: - receiving information about wind direction from the wind direction sensor (111); - Based on said information, controlling the various actuators (322) and the various propeller engines (218) so as to orient the platform (100) according to the wind direction by rotating the platform around an anchoring center (O).

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