A wind power plant comprising a wind turbine with a vertical rotational axis

Abstract

The present invention relates to a wind power plant comprising at least one wind turbine (1) having a vertical rotational axis and a support column (4) having a support assembly. The wind turbine (1) comprises a horizontally mounted rotor with blades (11, 11 ') arranged from above on the support column (4) and at least one power generator (16). The support assembly comprises a base (6) for housing at least one wind turbine (1) comprising three vertically arranged blade modules (2) arranged one above the other. Each blade module (2) comprises three vertically arranged blades (11, 11 '), each of which is mounted on its own alignment shaft (12), wherein the three alignment shafts (12) are arranged vertically parallel to each other. The blades (11, 11 ') of the blade module (2) are arranged symmetrically in one horizontal plane so that together they form substantially a propeller without a direct common centre fit. Each individual alignment shaft (12) is common to a trio of superimposed blades (11, 11 '), one from each blade module (2) belonging to a single wind turbine assembly (1). The wind turbine (1) is arranged in a cage (5), which is part of the support assembly, to protect the wind turbine from birds and larger flying objects.

Description

[0001] A wind power plant comprising a wind turbine with a vertical rotational axis

[0002] Field of

[0003] The invention relates to a wind power plant comprising a wind turbine having a vertical rotational axis.

[0004] Prior art

[0005] Wind turbines for use in wind power plants are divided into horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT). A vertical axis wind turbine is a type of wind turbine that has a vertical rotational axis. There are different designs of these turbines, such as Savonius and Darrieus turbines or helicopter turbines. These turbines have several advantages, including the ability to catch the wind from any wind direction, which is useful in locations with irregular or variable winds. The advantage of wind turbines is that they operate all year round, in winter, even at night. Wind turbines are also suitable for supplementing island systems, and for grid connection at higher outputs. VAWT is represented by the Savonius type of wind power plant. This wind power plant has a rotor using drag forces for its rotation with a very simple design. It comprises two offset cylindrical surfaces, a convex and a concave surface, which are placed side by side on a common vertical rotational axis. The turbine has the shape of the letter S. The turbine takes advantage of the different coefficient of resistance of the flow medium acting on the convex and concave surfaces. The rotor of a conventional Savonius turbine comprises a pair or trio of semi-circular or kidney-shaped blades. The inner edges of the blades extend beyond the centre of the rotor, thus allowing the medium to flow between their rear sides. The rotational axis is perpendicular to the direction of flow. The rotary motion is caused only by the difference in pressure of the flowing air (wind) on the convex and concave surfaces. The counterbalance to this very simple rotor design is its low efficiency of about 15 to 20 %. The disadvantage of the two-bladed Savonius turbine is the existence of a dead angle. This can be solved for the time being by combining several rotors with differently angled blades, or by the helical shape of the blades in the Darrieus wind blade turbine.

[0006] Another representative of VAWT is the Darrieus turbine, which is a turbine operating on the buoyancy principle. Unlike conventional wind turbines, the rotational axis is perpendicular to the direction of the wind and is usually built vertically. As a result, the machine does not depend on the direction of the wind. The Darrieus rotors, which are a modification of the Savonius turbine, make better use of the buoyancy principle. Their effective surfaces take the form of aerodynamically shaped slender blades arranged around the axis of the rotor on simple mounts (e.g. brackets, hoops), or bowed and directly attached at both ends to a horizontally mounted axis, which can be compared to the kneading element of a food processor.

[0007] Both of these types of vertical axis rotors have a significant advantage in that they do not need directional windage to operate, they operate in a constant position in any and variable wind direction. However, their efficiency, determined by the Betz power factor, is significantly lower compared to the classical form of wind turbines (horizontal axis, three- bladed rotor).

[0008] For wind turbines, the so-called Betz theoretical efficiency of the wind motor, given as the maximum theoretical value of the power factor, is 0.593. It has been shown that a conventional three-blade HAWT rotor operating on the buoyancy principle can achieve a value of 0.48, a five-blade rotor 0.44, a VAWT Darrieus rotor 0.38, and for the Savonius rotor a value of only 0.21 applies.

[0009] These turbines have several advantages, including the ability to catch wind from any wind direction, which is useful in places with irregular or variable winds. These turbines are usually fitted to wind farms. Wind turbines are also suitable for supplementing island systems, and for grid connection at higher outputs.

[0010] VAWTs incorporating a vertical axis wind motor are often used in urban or residential areas due to their lower noise and aesthetics. However, they are not commonly used for large commercial projects where HAWTs predominate. They have less visual and acoustic impact, making them more appropriate for some sites, but like all wind turbines, they have a negative impact on birds and local ecosystems.

[0011] A US patent application US 2013272894 A1 describes a power generation device that uses an Archimedes modular / multi-axial rotor (AMR) with a single foil and has the shape of an elongated Archimedes curve that tapers at the ends. Many AMRs can be assembled into many tetrahedral or other three-dimensional structures that generate electricity. These structures would be fabricated to facilitate transportation, handling, assembly, installation and maintenance. The AMR is quiet (no propeller buzzing), bird-friendly, can adapt to any orientation relative to the wind / fluid direction, and continues to operate even when in the direct shadow of adjacent AMR rotors. A US Patent US 4500259 A describes a device for generating energy that is extracted from a free stream of wind or water using a multi-turn helicoidal structure with a relatively small inclination angle. The axis of the structure, about which the helicoid rotates, makes an angle with the flow vector that is on the order of or slightly greater than the angle of inclination. Several such helicoidal structures with overlapping radii are combined to capture a given cross-section of the flowing fluid as efficiently as possible. In this way, helicoidal walls can be built that are kilometres long. By using groups of helicoids that rotate alternately clockwise and anticlockwise, all the gyroscopic forces that arise when the structures rotate according to changes in flow direction are internally balanced. An omnidirectional structure that does not have to rotate when the flow direction changes is also described. It is obtained by adding flow reversers surrounding a helicoidal structure with a vertical axis.

[0012] A Chinese patent application CN 114439679 A describes a wind turbine with a vertical rotational axis with blades that can be adjusted in a self-adaptive telescopic mode. The wind turbine comprises an upper plate, a lower plate, a diagonally bent axial shaft comprising a vertical section and a horizontal section on which a rudder is mounted. The vertical section is surrounded by a pivot sleeve mounted in bearings, the pivot sleeve comprising an upper turntable, a lower turntable and a sleeve which are connected to each other. The inner side of the upper and lower plates are provided with limiting rails, the central axis of which is arranged in an Archimedean spiral to provide optimum function between the upper and lower plates. The top and bottom plates accommodate adjustable symmetrical hollow sheets which are made in the form of telescopically foldable sections.

[0013] A US Patent Application US 2017022970 A1 describes (see Figures 1-4 of said document) a three-bladed vortex propeller configuration. The propeller has a central shaft oriented in a position that is perpendicular to the ground surface and perpendicular to the direction of fluid flow. The central shaft has a plurality of blades extending from the central shaft, each of the amount c around said blades having outer edges and inner edges, the inner edges of the blades being connected directly to an outer surface of the central shaft. The outer edges of the blades extend in an upward curvature around the central shaft, and the inner edges of the blades extend in an upward curvature around the central shaft. The speed of rotation of the inner edge of the blades about the central shaft is less than the speed of rotation of the outer edges of the blades about the central shaft. The blades are interconnected at various points along the central axis by a rigid member. A plurality of lower rigid members are connected to the central axis and to each of the three blades. The rigid members extend laterally outwardly from the central axis of the central shaft and are integrated into the upper face of the blades approximately midway along their width.

[0014] A US patent application US 2010215492 A1 describes a device for generating a driving force, comprising a column comprising a plurality of resilient elements arranged around said column, which when inserted in a current, respond by positively rotating around in the same direction. Said elastic elements are aerodynamic diaphragms whose location and shape follow logarithmic spiral patterns. Said resilient elements include a movable head disposed at the top of said column and a base disposed at the bottom of said column. Each membrane is attached at its top to said movable head and at its bottom to said base. The aerodynamic membranes are preferably formed as flexible, and each membrane is attached at its upper end to said movable head and at its lower end to the base.

[0015] Summary of the invention

[0016] The aim of the invention is to design a wind power plant based on the Savonius principle, which is designed as a three-propeller wind turbine, where the propellers are replaced by blades arranged symmetrically in a blade wheel, but where this blade wheel does not have a common blade shaft. Each blade of the blade wheel has its own propeller shaft, which is also the propeller shaft for that blade, but which is also the propeller shaft and propeller shaft for one of the other blades of the blade wheels arranged in the wind turbine, herein called the blade module. The trio of blade modules, together with other parts including power generators, comprise a wind turbine arranged in a vertical direction which can be connected to form a column assembly of several wind turbines.

[0017] The above objective is achieved by a wind power plant comprising at least one wind turbine with a vertical rotational axis. The wind turbine comprises a horizontally mounted rotor with at least two blades, the rotor being arranged on top of a support column, and further comprises at least one power generator. The support column together with a support assembly comprises a base on which at least one wind turbine is arranged, the wind turbine comprising a rotor with three vertically arranged blade modules arranged one above the other, wherein the wind turbine is arranged in a cage. The uppermost wind turbine in the multiple wind turbine assembly of the wind power plant assembly further comprises a top cover on which a lightning rod and a control weather station are arranged, wherein each wind turbine is arranged in its own cage independently or in a multiple cage but also independently and pivotally independent of the other wind turbines.

[0018] The wind turbine structure comprises a support shaft comprising an Archimedean helix, wherein the support shaft has anchor rings with holes at the ends to which boundary elements for accommodating a support tube are attached. Bearings are disposed inside the support tube and the power generator is arranged outside the support tube. Furthermore, a sliding washer is fixed on the support shaft, on which a planetary gearbox is mounted, and which is surrounded by the support tube used to accommodate a pair of discs, wherein the discs are spaced apart on the support tube. The discs comprise three storage holes in which adjustable shafts are housed, formed by a regular hexagon, wherein the shafts are arranged in a circle at an angle of 120° to each other and are adjustable by means of operating cranks of a rotary mechanism which is housed in each disc. Three blades are arranged on each alignment shaft, one of each of the three separate blade modules comprised in the wind turbine, wherein the blades comprise slots which extend towards the Archimedean helix which is arranged on the support shaft at the location of the arrangement of the blade modules.

[0019] In order to provide modularity to a wind turbine structure comprising a plurality of separate wind turbines, it is advantageous if the wind turbine structure comprises a caged support assembly externally and a substantially outer casing comprising a pair of protective rings and a mesh, wherein a rotating wind turbine is arranged inside this non-movable support assembly. The wind turbine further comprises disc attachments, bearings, power generators such as DC or other alternators or dynamos. The support shaft passes through the two disks and comprises an Archimedean helix at the location of the blade modules, which are mounted on a trio of stator shafts arranged at 120° to each other. The effect of the arrangement of the blades with slots is that the blades are accelerated by the action of the air on the support shaft, which is secondarily accelerated by the flow of air coming from the slots onto the Archimedean helix.

[0020] The power plant is adjustable according to the wind efficiency, with a rated output ranging from 5 to 200 kW and a maximum output of 400 kW per module. The higher power output depends mainly on the number of interconnected wind turbines included in the wind turbine assembly. The power plant is designed as a domestic island system, which could eventually be connected to a central grid. Its design ensures minimum maintenance and maximum safety and resistance to adverse outdoor influences.

[0021] The advantage of a wind turbine design comprising a wind turbine with a vertical rotational axis is that it can be used for wind break functions. Wind erosion of soil and water can thus be prevented. The shape of the wind turbine blends into the landscape, does not make an unpleasant sound, does not turn air currents into horizontal eddies and does not endanger birds with its blades.

[0022] Such a wind turbine can be installed on solid ground or on flat roofs of buildings. The wind turbine then needs to have a wind speed of a given speed to start up, where a wind speed of about 1 .5 m / s is needed, and the optimum wind speed for running a wind turbine is 6 m / s.

[0023] The design of the turbine blades according to the present invention comprises optimizing their shape with respect to their aerodynamic properties. The purpose is to increase the conversion of the kinetic energy of the wind into the rotational motion of the wind turbine blades. The blades are designed in such a way as to minimize air resistance while generating sufficient lift necessary to rotate the turbine. This involves setting the airflow into a spiral motion, with the blades diverting the flowing air into slots that are aligned towards the Archimedean helix, which is part of the wind turbine's support shaft. This Archimedean helix is used to channel the swirled air vertically into the space outside the wind turbine.

[0024] The proposed design achieves that the wind flow entering the wind turbine is guided by the shape of the blades under the symmetrical pressure on the wind turbine blade walls and thus, by means of the blade shaping, it is directed in a longitudinal laminar flow, and subsequently converted into a turbulent air flow and discharged along the modified Archimedean helix outside the wind power plant.

[0025] Brief description of drawings

[0026] The invention will be further illustrated by means of the following drawings:

[0027] Fig. 1 - shows a wind turbine assembly with one wind turbine,

[0028] Fig. 2 - shows a plan view of the wind power plant,

[0029] Fig. 3 - shows the design of the wind turbine according to Fig. 1 , without the support column and base, Fig. 4 - shows a horizontal section of a wind turbine,

[0030] Fig. 5 - shows a view of the wind turbine cage,

[0031] Fig. 6 - shows a view of the connection of a pair of wind turbines into a single wind turbine assembly,

[0032] Fig. 7a - shows the plan view of the shape of a wind turbine blade,

[0033] Fig. 7b - shows the shape of a blade with one base,

[0034] Fig. 7c - shows the shape of a blade with two bases,

[0035] Fig. 7d - shows a staggered assembly of one triple blade of a triple blade module arranged on a common alignment shaft,

[0036] Fig. 7e - shows the angular range of blade positions when controlled by a linear motor,

[0037] Fig. 8 - shows a wind power plant with one wind turbine without a support column, base, and without a top cover and a cover ring,

[0038] Fig. 9 - shows an assembly of a wind power plant with three wind turbines,

[0039] Fig. 10 - shows rotating parts of a stripped wind turbine with one wind turbine,

[0040] Fig. 11 - shows a section of the wind turbine at the location of a planetary gearbox,

[0041] Fig. 12 - shows the positioning of a pivot mechanism on the pins,

[0042] Fig. 13 - shows the description of curves into which perpendicular walls of the blades are shaped.

[0043] The present invention will be further illustrated in the following description with reference to the relevant drawings. In said drawings, the present invention is illustrated by an example embodiment of a device for generating power from rotational motion of turbine blades.

[0044] An example of a wind turbine assembly with one wind turbine 1 is shown in Fig. 1 and Fig. 2. In this embodiment, the wind turbine assembly comprises a support column 4 comprising a base 6 on which the wind turbine 1 is arranged with a top cover 3 and a cover ring 22. The wind turbine 1 comprises a rotor with three blade modules 2. The wind turbine 1 is arranged in a cage 5. The cage 5 comprises an upper anchor ring 18 and a lower anchor ring 18' with a tubular structure 64. Another example of a wind turbine assembly, this time with two wind turbines 1 , is shown in Fig. 6. In this embodiment, the wind turbine comprises a support column 4 comprising a base 6. An upper wind turbine 1 is arranged on top of a lower wind turbine 1 , which comprises a top cover 3, wherein the two wind turbines 1 are arranged in cages 5 which are connected to each other.

[0045] Another example of a wind turbine assembly with three wind turbines 1 is shown in Fig. 9. In this embodiment, the wind turbine assembly comprises a support column 4 comprising a base 6 on which the wind turbines 1 are arranged, wherein the highest wind turbine 1 in the wind turbine assembly comprises a top cover 3 and a bottom cover ring 22.

[0046] The wind turbines 1 can be arranged one above the other, and each wind turbine assembly comprises an uppermost wind turbine 1 with a top cover 3 and an electronic module covered by a bottom cover ring 22. Each wind turbine 1 is mounted independently on the support shaft 10 and rotates independently of the other wind turbines 1 .

[0047] Each wind turbine 1 comprises a cage 5, as shown in Fig. 5. The cage 5 comprises annular tubular parts 24 on which vertical support tubes 19 are fixed, their interconnection being realized by welding. At the ends of the vertical support tubes 19, elbows 28 and terminations 29 are fixed by welding. In this example embodiment, the terminations 29 are connected to the top cover 3. To prevent contact with birds, the cage 5 is covered by a mesh 32 which is fixed between a pair of protective rings 23 which are slid onto the cage 5 and form the protective shell of the wind turbine 1 , see Fig. 3. The cage 5 is fixed to the anchor rings 18, 18' by means of connecting tubes 26 comprising connecting elements 65 with connecting counter-pieces, which have holes for sliding onto the support shaft 10, wherein the connecting tube 26 is connected by a T-connection 27 to the vertical support tube 19. These couplings are welds.

[0048] A wind turbine 1 without a top cover 3 and a bottom cover ring 22 is shown in Fig. 8. In this embodiment, the wind turbine 1 comprises a support shaft 10 on which an Archimedean helix 7 is arranged. At the ends of the support shaft 10, an upper anchor ring 18 and a lower anchor ring 18' are arranged for securing the cage 5.

[0049] On each of the anchor rings 18, 18', a defining element 66, 66' is attached to accommodate the support tube 17. A pair of bearings 67, through which the support shaft 10 passes, is housed within the support tube 17. A power generator 16, such as a permanent magnet DC generator, is arranged externally on the support tube 17, wherein the stator of the power generator 16 is attached to the tubular extension 20 by means of stator retainers 40 and the rotor is attached to a disc 13. Further, a defining sliding washer 14 is arranged on the support shaft 10 on which a planetary gearbox 15 is mounted. The planetary gearbox 15 has a central wheel 33 which is fixed on the support shaft 10, and satellite wheels 34 which are housed in bushings 62 which are arranged on pins 9 of stator shafts 12 of hexagonal design, secured by a lock nut 63, see Fig. 12. A circumferential wheel 35 is fixed to the rotor of the power generator 16, the stator of the power generator 16 being fixed by means of the stator grips 40 to the disc 13, see Fig.

[0050] 11 . The power generator 16 is a DC generator. The support tube 21 of the disk 13, which is part of the upper and lower disk 13, is supported by a sliding pad 14.

[0051] The upper and lower discs 13 are arranged on the support shaft 10 in a mirror arrangement with respect to each other. Storage holes 52 are formed in the discs 13 for the hexagonal alignment shafts 12, which are arranged on a circle at an angle of 120°. The stator shafts 12 comprise pins 9 at each end. These are held in carrier bearings 57 arranged in seats 58 of the pins 9, which are mounted on the discs 13, as can be seen in Fig. 10 and Fig. 12. These stator shafts 12, together with blades 11 11 ', can be rotated by means of operating handles 30 of the rotation mechanism 39. The rotation mechanism 39 is housed in a space of the disc 13 and is engaged with a drive unit 56, which is an electric motor, via a main rod 36 which is connected to a trio of associated rods 37. The heads 61 of the associated tie rods 37 are connected to the individual alignment shafts

[0052] 12. The alignment shafts 12 of the hexagonal embodiment are provided with blades the 11 , 11 ' which comprise slots 48, wherein each trio of blades 11 , 11 ' of the three superimposed blade modules 2 is arranged on a common alignment shaft 12, as can be seen in Fig. 4 and Fig. 7d. The first blade module 2, which is arranged as the outermost of the blade modules 2 of the single wind turbine 1 , comprises a trio of blades 11 with a single base 60, two of these blades 11 being mirror rotated relative to each other and joined to form a single double blade, see Fig. 7b. The second blade module 2, which is arranged as the middle of the blade modules 2 of the single wind turbine 1 , comprises three blades 11 ' with two bases 60 which enclose the blade 11 ' from both sides, see Fig. 7c. The blade modules 2 are arranged on the alignment shafts 12 such that a second type of blade module 2 with blades 11 ' having two bases 60 is arranged between a pair of blade modules 2 of a first type with blades 11 ' having one base 60, as can be seen in Fig. 7d. The blades 11 , 11 ' direct the air flowing through the slit 48 towards the multiple Archimedean helix 7 which is arranged on the support shaft 10 at the location of the arrangement of the blade modules 2.

[0053] In addition, the uppermost wind turbine 1 in the multiple wind turbine assembly 1 is terminated by a top cover 3 on which a lightning rod 31 and a control weather station 25 are located. Moreover, the uppermost wind turbine 1 comprises, in its lower part, an electronic module covered by a cover ring 22, as can be seen in Fig. 1 and Fig. 3.

[0054] An embodiment of the blade 11 with a single base 60 of the wind turbine 1 is shown in Fig. 7a and Fig. 7b. The blades 11 in this embodiment comprise a single base 60 and two perpendicular walls 59 and a contact surface 38. These blades 11 are used to form a blade module 2 with twin blades 11. The embodiment of the blades 11 ' with two bases 60, see Fig. 7c, is part of a second type of central blade module 2, that is, a central blade module 2.

[0055] The edge 45 of the first perpendicular wall 59 of the blade 11 , 11 ' describes a curve A2 having the shape of an Archimedean spiral, which is determinative of a smooth increase in the rotational velocity of the air stream in the inner space 41 of the blade 11 , 11 '. The leading edge 42 of the second perpendicular wall 59 of the blade 11 , 11 ' describes a curve A3, which has the shape of a part of an ellipse, and has a concave shape, as can be seen in Fig. 13. This leading edge 42 defines a narrowed space for increasing the velocity of the air flow in the inner space 41 , and further transitions into an incident edge 44, which describes a convex shape. This incident edge 44 allows the airflow to be compressed into the narrowed inner space 41 of the blade 11 , 11 '. This shaped inner space 41 allows turbulent flow to occur. The incident edge 44 of the second perpendicular wall 59 transitions into an incident edge 43 at a point opposite a critical projection 47, which describes a concave shape and provides an acceleration of the action as the air stream leaves the inner space 41 of the blade 11 , 11 '. The edge 45 of the first perpendicular wall 59 is terminated by the critical protrusion 47, which is where the conversion of the linear flow of the air stream into a turbulent flow of the air stream occurs and the subsequent discharge of the air stream through the slit 48, which extends towards the Archimedean helix 7.

[0056] The slot 48 is followed by a concave surface 49 of the second perpendicular wall 59 to increase the pressure of the rotating air stream and to discharge it towards the Archimedean helix 7. Further, a shaped surface 50 of the perpendicular wall 59 separates the rotating air from the air inlet space 41 . The edge 51 of the base 60 of the blade 11 , 11 ' describes a curve A1 in the shape of an ellipse, as can be seen in Fig. 13, and is intended to guide the air flow into the inner space 41 of the blade 11 , 11 Each blade 11 , 11 ' has a storage opening 52 for sliding onto the hexagonal shaped alignment shaft 12.

[0057] The function of a wind power plant is as follows. The wind turbine 1 comprises two types of blade modules 2, divided according to the type of blades 11 , 11 ' of the respective blade module 2. Thus, the wind turbine 1 comprises two blade modules 2 of a first type and, between them, one blade module 2 of a second type. The blade module 2 of the first type comprises six blades 11 with a single base 60, wherein each two blades 11 with a single base 60 are mirror related to each other to form a substantially double blade with two bases 60. The middle blade module 2 of the second type comprises three blades 11 ' with two bases 60. Both types of blade modules 2 are configured so that these blades 11 , 11 ' can be adjusted according to the speed control of the wind turbine 1 and fully open back to their base position at lower wind speeds and thus lower speeds, as can be seen in Fig. 7e. Such a solution allows the wind to be captured equally from all directions at all times. The proposed shape of the blade 11 , 11 ' directs the air flow towards a constriction 46 of the inner space 41 of the blade 11 , 11 ', where at the critical projection 47 the linear flow changes to a turbulent flow and the air-wind flow in rotation flows through the slit 48 towards the Archimedean helix 7 arranged on the support shaft 10. In this way, the rotation of all the parts arranged on the support shaft 10 is ensured. This means that the blade modules 2 are also rotated.

[0058] The blade modules 2 and the rotating components of the wind turbine 1 are configured symmetrically to the rotational axis of the wind turbine and are arranged in the cage 5. At the same time, the rotation of the wind turbine 1 in the cage 5 ensures its stability based on the flywheel principle. The blade modules 2 and their blades 11 , 11 ' can be adjusted with respect to the incoming air flow, thus ensuring that the blades 11 , 11 ' can close and thus reduce the air pressure on their working surface. The initial position 53 of the blades 11 , 1 T is set at an angle of 20° to the alignment shaft 12. The operating position 54 of the blades 11 , 11 ' is set at an angle of 70° and the closed position 55 of the blades is set at an angle of 0°, as can be seen in Fig. 7e.

[0059] The regulation of the surface of the blades 11 , 11 ' is made possible by arranging them for sliding on the alignment shaft 12, which passes through the storage holes 52 of the discs 13 and the blades 11 , 11 ' are pivotally mounted on pins 9 arranged in the support bearings 57. This allows the blade modules 2 to be adjusted to a cylindrical shape. The incident edges 44 of the blades 11 , 11 ' protrude from the cylinder, allowing the wind stream to enter even at higher wind speeds. This design can guarantee the working technical function of this VAWT type wind turbine.

[0060] The adjustment of the blades 11 , 11 ' is configured by means of the control handles 30 and is provided by means of a rotation mechanism 39 arranged on the two discs 13. The control handles 30 are fixed to the pins 9 and are also connected by means of a main rod 36 which is connected to a trio of associated rods 37 to the drive units 36, which are linear electric motors. These linear electric motors control the opening and closing of the blades 11 , 11 '. The linear electric motors are controlled by a control unit, based on data from a control weather station 25 located on the top cover 3.

[0061] Industrial applicability

[0062] A wind power plant comprising a vertical axis wind turbine is designed to meet the energy needs of both residential and industrial developments and to provide on-site power generation. A wind power plant can be connected to an existing power grid and individual wind power plants can be interconnected to create larger power systems.

[0063] List of reference signs

[0064] 1 - wind turbine

[0065] 2 - blade module

[0066] 3 - top cover

[0067] 4 - support column

[0068] 5 - cage

[0069] 6 - base

[0070] 7 - Archimedean helix

[0071] 8 - plane of the cage connection

[0072] 9 - pin

[0073] 10 - support shaft

[0074] 11 - single base blade

[0075] 11 ' - blade with two bases

[0076] 12 - adjusting shaft

[0077] 13 - drive

[0078] 14 - sliding washer

[0079] 15 - planetary gearbox

[0080] 16 - power generator

[0081] 17 - support pipe

[0082] 18 - upper anchor ring

[0083] 18' - lower anchor ring

[0084] 19 - vertical cage support tube

[0085] 20 - tubular extension

[0086] 21 - disc support tube

[0087] 22 - cover ring

[0088] 23 - protective ring

[0089] 24 - ring tubular part

[0090] 25 - control weather station

[0091] 26 - connecting pipe

[0092] 27 - T-connection

[0093] 28 - elbow

[0094] 29 - termination

[0095] 30 - operating handle of the winding mechanism

[0096] 31 - lightning rod

[0097] 32 - mesh

[0098] 33 - central wheel

[0099] 34 - satellite wheel 35 - circumferential wheel

[0100] 36 - main rod

[0101] 37 - associated rod

[0102] 38 - touch surface

[0103] 39 - swivel mechanism

[0104] 40 - stator mount

[0105] 41 - inner space of the blade

[0106] 42 - leading edge

[0107] 43 - incident edge

[0108] 44 - incident edge

[0109] 45 - perpendicular wall edge

[0110] 46 - narrowing

[0111] 47 - critical protrusion

[0112] 48 - gap

[0113] 49 - concave surface

[0114] 50 - shape area

[0115] 51 - edge of the base

[0116] 52 - storage opening

[0117] 53 - default blade position

[0118] 54 - operating blade position

[0119] 55 - closed blade position

[0120] 56 - power unit

[0121] 57 - carrier bearing

[0122] 58 - pin fit

[0123] 59 - perpendicular wall

[0124] 60 - base

[0125] 61 - head of the associated rod

[0126] 62 - satellite wheel housing

[0127] 63 - locking nut

[0128] 64 - tubular structure

[0129] 65 - connecting element

[0130] 66 - upper defining element

[0131] 66'- lower defining element

[0132] 67 - bearing

Claims

CLAIMS1. A wind power plant comprising: at least one wind turbine (1 ) having a vertical rotational axis; and a support column (4) having a support assembly; wherein the wind turbine (1 ) comprises: a horizontally mounted rotor with blades (11 , 11 '), the rotor being arranged from above on the support column (4); and at least one power generator (16); characterised in that the support assembly comprises a base (6) for housing at least one wind turbine (1 ) comprising three vertically arranged blade modules (2) one above the other, wherein each blade module (2) comprises three vertically arranged blades (11 , 11 '), wherein each blade (11 , 11 ') is mounted on its own alignment shaft (12), wherein all three alignment shafts (12) are arranged vertically parallel to each other, wherein the blades (11 , 11 ') of the blade module (2) are arranged symmetrically in one horizontal plane so that together they form substantially a propeller without a direct common centre fit, wherein each individual stator shaft (12) is common to a trio of superimposed blades (11 , 11 '), one from each blade module (2) belonging to a single wind turbine assembly (1 ), and in that the wind turbine (1) is arranged in a cage (5), which is part of the support assembly, to protect the wind turbine from birds and larger flying objects.

2. The wind power plant according to claim 1 , characterised in that it comprises at least two wind turbines (1 ) arranged in one compact assembly in a vertical plane one above the other, wherein each wind turbine (1 ) is mounted separately in a cage (5) to ensure that the rotation of the wind turbines (1 ) is independent of each other.

3. The wind power plant according to claim 1 or 2, characterised in that the cage (5) comprises a pair of anchor rings (18, 18') and a tubular structure (64), wherein the tubular structure (64) comprises vertical support tubes (19) rigidly connected to annular tubular parts (24) and releasably connected to connecting tubes (26) by means of T-connections (27), wherein the vertical support tubes (19) are terminated from above by elbows (28) with terminations (29), wherein the connecting tube (26) is connected at its opposite end from the T-connection (27) to a coupling element (65) and the anchor ring (18, 18') is connected at its outer circumference to a coupling counterpart, wherein the coupling element (65) and the coupling counterpart are arranged complementary in shape to each other so that they fit together to form arigid connection of the tubular structure (64) with the upper anchor ring (18) and the lower anchor ring (18'), and this connection is secured by a bolt.

4. The wind power plant according to claim 3, characterised in that the cage (5) comprises a cylindrical shell comprising in its upper and lower parts a protective ring (23), between which a mesh (32) is arranged.

5. The wind power plant according to claim 4, characterised in that the wind turbine (1 ) comprises a vertically arranged support shaft (10) passing through a centre of the wind turbine (1 ) along its entire length, wherein in a central part between the blades (11 , 11 ') from the outside, the support shaft (10) comprises an Archimedean helix (7) for diverting the air stream rotating the blades (11 , 11 ') and passing through them in a vertical direction.

6. The wind power plant according to any one of claims 1 to 5, characterised in that the support assembly further comprises a pair of defining elements (66, 66') fixed by bolts from below to the upper anchor ring (18) and fixed by bolts from above to the lower anchor ring (18'), wherein for this connection, the anchor rings (18, 18') comprise connecting holes arranged in a circle, wherein above the lower defining element (66') and below the upper defining element (66), there is a support tube (17) arranged in a fixed connection, inside which support tube (17), there are bearings (67) arranged on both inner sides for rotational bearing of the wind turbine (1 ) and rotational bearing of the support shaft (10).

7. The wind power plant according to claim 6, characterised in that the wind turbine (1 ) further comprises two planetary gearboxes (15) for rotating the blades (11 , 11 ') of the blade modules (2), wherein the planetary gearboxes (15) are arranged one each on a bearing (67) on the side of the bearing (67) adjacent to the blade module (2), wherein on each planetary gearbox (15), there is a sliding washer (14) arranged on the side away from the blade module (2) against which the support tube (21 ) of the disc (13) is supported on the side away from the blade module (2), wherein the disc (13) comprises three storage holes (52) for accommodating hexagonally shaped alignment shafts (12) which are terminated by pins (9) with a lock nut (63), wherein the pins (9) are housed in bearings (57) arranged in seats (58) which are fixed on the discs (13), wherein the alignment shafts (12) are arranged on a circle at an angle of 120° and are adjustable by means of operating cranks (30) of a swivel mechanism (39) which is arranged in each disc (13), and wherein on each alignment shaft (12),three blade modules (2) with blades (11 , 11 ') comprising slots (48) are arranged, which slots (48) extend towards an Archimedean helix (7) which is arranged on the support shaft (10) at the location of the arrangement of the blade modules (2), wherein a blade module (2) with blades (11 ) having one base (60) is arranged between a pair of blade modules (2) with blades (11 ') having two bases (60), wherein the blade module (2) with blades (11 ) with one base (60) comprises three twin blades, each of which is a fixed connection of a pair of blades (11) with one base (60) mirrored to each other such that the base of each blade (11 ) with one base (60) arranged in a double blade arrangement is also the outer base of a double blade, wherein the planetary gearbox (15) comprises a central wheel (33) which is mounted on a support shaft (10), three satellite wheels (34) which are housed in bushings (62) arranged on the pins (9) of the stator shafts (12), and a circumferential wheel (35) which is fixed to the rotor of the power generator (16).

8. The wind power plant, according to claim 7, characterised in that the power generator (16) is arranged outside the support tube (17), wherein the stator of the power generator (16) is attached to a tubular extension (20) by means of grips (40) and the rotor is attached to the disc (13), wherein the tubular extension (20) with the disc (13) is the outer protective casing of a motion housing of the wind turbine (1 ) and of the power generator (16) with the associated support and motion elements, wherein the tubular extension (20) is part of the support assembly, wherein the power generator (16) comprises a DC generator or alternator having a rated power of between 5 kW and 200 kW.

9. The wind power plant according to claim 8, characterised in that the support assembly further comprises a top cover (3) on which a lightning rod (31 ) and a control weather station (25) are mounted, wherein the control weather station (25) is electrically and data connected to a control unit for sensing and transmitting weather data for optimizing the positioning of the blades (11 , 11 ') according to the current weather conditions, wherein the top cover (3) is arranged only on the uppermost wind turbine (1 ) arranged in a row above.

10. The wind power plant according to claim 9, characterised in that the support assembly further comprises an electronic module covered by a cover ring (22) for housing a control unit carrying information for controlling drive units (56) for optimizing the adjustment of the position of the blades (11 , 11 ') according to the current weatherconditions, wherein the electronic module is arranged at the bottom of only the highest arranged wind turbine (1) in a row above.

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