VERTICAL-AXIS WIND TURBINE MODULE

Description

[0001] The invention relates to vertical-axis wind turbines (VAWTs), vertical-axis wind turbine modules with multiple vertical-axis wind turbines (VAWTs), turbine systems and wind power plants.

[0002] Vertical-axis wind turbines (VAWTs), commonly referred to as VAWTs, are particularly suitable for operation in residential areas and locations with strict noise and sound requirements due to their robust operating characteristics, low noise emissions, the avoidance of shadows, and their compact design. A disadvantage of this type of turbine is the low efficiency, often only around 20%, compared to horizontal-axis wind turbines (HAWTs), which can achieve an efficiency of around 40%.

[0003] DE 103 31 682 A1 discloses a wind turbine comprising at least one rotor which rotates around a vertical axis and drives a generator. This rotor comprises a number of rotor blades arranged around the axis of rotation. A guide surface structure is located around the rotor and serves to optimally direct the wind hitting the turbine onto the rotor and to allow the air to flow out again on the outlet side. In turbines with such an arrangement, the efficiency can be improved if the rotor is operated according to the through-flow principle, i.e. the rotor blades do not converge on the axis of rotation but are arranged around a free through-flow space through which air flow is possible in any angular position of the rotor. The guide surface structure has a flow inlet through which the air flow can act laterally on the rotor.This flow inlet is bordered on both sides by two guide surfaces running toward the rotor. The guide surface located upstream of the rotor's rotational direction has a concave horizontal cross-section. Furthermore, the guide surface structure includes a corresponding flow outlet located opposite the flow inlet with respect to the rotor.

[0004] DE 10 2009 040 467 A1 discloses a wind turbine with a vertical axis and a cylindrical wind turbine, which is equipped with an inner rotor cylinder, which has air-charged rotor blades and serves in particular to drive a rotating power generator, and a fixed guide cylinder enclosing the rotor cylinder, which has fixed guide vanes that direct the air flow supplied to them onto the rotor blades of the rotor cylinder, and catch vanes that are directed outside the guide vanes of the fixed guide cylinder onto the guide vanes thereof, wherein the catch vanes belong to a pivoting cylinder with which they can be pivoted into an optimal catch position, preferably at least partially counter to the oncoming air flow, wherein the catch vanes are staggered in the incoming flow direction from front to rear and extend further laterally from catch vane to catch vane,so that the catching vanes capture the partial flows of the incoming air flow allocated to them and redirect them to the guide vanes, and wherein the catching vanes preferably experience the same orientations to the air flow on both sides of the cylinder curvature against which the air flow flows.

[0005] EP 3 736 439 A1 discloses a vertical axis wind turbine (VAWT) having two counter-rotating rotors mounted on first and second spaced-apart vertical axes. Each rotor has a plurality of rotor blades extending generally inwardly from an outer periphery, the vertical axes being mounted on a support structure which, in turn, is rotatable about a third vertical axis on a platform. The third axis is spaced from a point midway between the first and second axes in a direction 90 degrees to and forward of a line between the first and second axes. The VAWT further includes a guide vane mounted on the support structure and having an apex forward of the third vertical axis in the direction 90 degrees from a line between the first and second axes.The guide vane has left and right symmetrical blade sections extending toward the rotors to direct airflow from the wind primarily to portions of the rotors outside the first and second axes.

[0006] WO2020089330A1 discloses a wind energy power supply system comprising a plurality of vertical axis type wind turbines including a vertical axis of rotation to which at least one blade is connected, and about which axis of rotation the at least one blade is arranged to rotate during operation, the wind blowing. The turbines are mechanically interconnected such that every other wind turbine is arranged to rotate in a first direction of rotation and that every other wind turbine of the system is arranged to rotate in a second direction of rotation opposite to the first direction of rotation.

[0007] WO2020128665A1 discloses a rotor turbine with mutual inserts, characterized in that the blades are mutually inserted and rotate in opposite directions. Furthermore, the wind resulting from the reverse rotation is used to increase the rotor rotation on the side, and vice versa. This rotor turbine is also intended for devices connected to a multi-rotor turbine that are effective, efficient, and compact, particularly for a multi-rotor turbine used in water currents.

[0008] Due to their compact design, vertical-axis wind turbines (VAWTs) are particularly well-suited for generating energy from the wind, such as that generated on the shoulder or median of highways, such as motorways. The use of individual VAWTs in the median of motorways is well-known.

[0009] In natural wind conditions, the efficiency of the wind turbines is of paramount importance. Factors such as start-up behavior and system inertia do not play a major role here, because the natural wind ensures that the flow acts head-on on the turbine for hours. However, in headwind conditions, depending on the speed of the vehicle (e.g. truck), the flow hits the turbine in a matter of seconds at up to 60 km / h. The most important factor here is start-up behavior, followed by system inertia, and third by efficiency. Efficiency cannot be utilized if reliable start-up behavior and minimal inertia are not met. A disadvantage of conventional vertical-axis wind turbines (VAWTs) for using headwind is, for example, that the start-up time of the individual turbines is usually longer than the time required for a vehicle to pass the individual turbine.As a result, the energy of the airstream cannot be fully utilized, so the efficiency is low.

[0010] An object of the invention is therefore to avoid disadvantages of existing vertical axis wind turbines (VAWT), in particular when used to utilize airstream on roads, in order to increase efficiency.

[0011] This task is solved by a vertical-axis wind turbine module, a turbine system and a wind turbine of the type described below.

[0012] One embodiment of the invention is a vertical-axis wind turbine module with a linear arrangement of at least three cylindrical vertical-axis wind turbines (VAWT) along a first horizontal axis, comprising at least one first cylindrical VAWT with a first bottom surface and a first cover surface, each with a first radius and a first number of first turbine blades arranged in the vertical direction between the first bottom surface and the first cover surface, wherein the first number is at least one and the first turbine blades have a first height, and at least one second cylindrical VAWT with a second bottom surface and a second cover surface, each with a second radius and a second number of second turbine blades arranged in the vertical direction between the second bottom surface and the second cover surface,wherein the second number is greater than or equal to the first number and the second turbine blades have a second height that is greater than the first height, wherein the distance between the vertical axes of adjacent VAWTs along the first horizontal axis is smaller than the sum of the radii of the adjacent VAWTs, and wherein the first bottom surfaces and the first cover surfaces of the at least one first cylindrical VAWT each have a second number of recesses on an outer edge, which are designed such that the second turbine blades can engage therein without contact, and wherein the plurality of VAWTs are coupled to one another in such a way and the first turbine blades are arranged in such a way that their power development is opposite to that of the second turbine blades,that, during operation, adjacent VAWTs rotate opposite to each other along the first horizontal axis. The vertical-axis wind turbine module also comprises at least one first wind deflector arranged tangentially and parallel to the first horizontal axis between two oppositely rotating VAWTs, and at least one first wind deflector arranged tangentially and parallel to the first horizontal axis between two oppositely rotating VAWTs, and at least one second wind deflector arranged tangentially and parallel to the first horizontal axis between two oppositely rotating VAWTs and on the side opposite the first horizontal axis to the first wind deflector.

[0013] In a further embodiment, the cross sections of the first turbine blades and the second turbine blades have a NACA (National Advisory Committee for Aeronautics) profile, C-profile, or Lenz-wing profile.

[0014] In a further embodiment, the first turbine blades and the second turbine blades are mounted so as to be rotatable about a vertical axis.

[0015] In a further embodiment, the first number and the second number are one of 3 or 4.

[0016] In another embodiment, the number of turbines is between 2 and 12.

[0017] In a further embodiment, the first height and the second height are in a range between 100 cm and 600 cm.

[0018] In a further embodiment, the first and second turbine blades are each assembled vertically from a plurality of segments.

[0019] In a further embodiment, the first and second bottom surfaces and the first and second cover surfaces are formed from one of aluminum or steel.

[0020] In a further embodiment, the first and second turbine blades are formed from one of aluminum, plastic, in particular polyoxymethylene (POM), glass fiber reinforced plastic (GRP), carbon fiber reinforced plastic (CFRP).

[0021] In another embodiment, each VAWT is supported at the top and bottom.

[0022] In a further embodiment, the diameter of each cylindrical VAWT is between 50 cm and 150 cm, preferably 100 cm.

[0023] In a further embodiment, the first and second turbine blades are composed of at least two segments in the vertical direction and each of the segments in the vertical direction has a height between 30 cm and 70 cm, preferably 50 cm.

[0024] A further embodiment of the invention comprises a turbine system with at least two vertical-axis wind turbine modules arranged linearly along the horizontal axis and with at least one freewheel between two vertical-axis wind turbine modules.

[0025] In a further embodiment of the turbine system, at least two of the vertical axis wind turbine modules have a different number of VAWTs.

[0026] A further embodiment of the invention comprises a wind turbine having at least one vertical-axis wind turbine module or a turbine system and having at least one generator connected to the at least one vertical-axis wind turbine module or the turbine system.

[0027] The invention is defined in the independent claims. Further developments of the invention are set forth in the dependent claims.

[0028] The invention is explained by way of example in the figures described below. Fig. 1 shows in perspective view details of an exemplary embodiment of a vertical-axis wind turbine module according to the invention. Fig. 2 shows in plan view details of another exemplary embodiment of a vertical-axis wind turbine module according to the invention.

[0029] Figure 1shows exemplary details of a preferred embodiment of a vertical-axis wind turbine module 1. The vertical-axis wind turbine module with a linear arrangement of several cylindrical vertical-axis wind turbines (VAWT) 2 along a first horizontal axis comprising at least one first cylindrical VAWT 2 with a first bottom surface 3 and a first cover surface 4, each with a first radius and a first number of first turbine blades 5 arranged in the vertical direction between the first bottom surface 3 and the first cover surface 4, wherein the first number is at least one and the first turbine blades 5 have a first height, and at least one second cylindrical VAWT 2' with a second bottom surface 3' and a second cover surface 4', each with a second radius and a second number of second turbine blades 5' arranged in the vertical direction between the second bottom surface 3' and the second cover surface 4',wherein the second number is greater than or equal to the first number and the second turbine blades 5' have a second height which is greater than the first height, wherein the distance between the vertical axes of adjacent VAWTs along the first horizontal axis is smaller than the sum of the radii of the adjacent VAWTs 2, 2', and wherein the first bottom surfaces 3 and the first cover surfaces 4 of the at least one first cylindrical VAWT 2 each have a second number of recesses 6 on an outer edge, which are formed in such a way,that the second turbine blades 5' can engage there without contact. Preferably, the first number is equal to the second number. By overlapping the VAWTs in this way, the spaces between the VAWTs can be reduced and the air flow in the blades can be lengthened mutually depending on the overlap, thereby increasing the torque. By overlapping the VAWTs, it is possible to arrange more turbines on a unit of length than without an overlap. For example, with a turbine diameter of 75 cm, approximately 133 turbines can be arranged over a length of 100 m without overlap; with an overlap of just 10 cm, approximately 153 turbines can be arranged over a length of 100 m, and with an overlap of 20 cm, as many as 181 turbines can be arranged over a length of 100 m. The overlap therefore significantly increases the output of a vertical-axis wind turbine module. The multiple VAWTs 2,2' are coupled to each other in such a way and the first turbine blades 5 are arranged in such a way that their power development is opposite to that of the second turbine blades 5' that, during operation, adjacent VAWTs 2, 2' run opposite to each other along the first horizontal axis.

[0030] By coupling the VAWTs 2 and 2' together and ensuring counter-rotation, the starting resistance of the VAWT that is driven after the first VAWT is reduced, as it has already been started by the first VAWT. The counter-rotation of adjacent turbines also reduces vibrations, enabling quiet operation. Furthermore, due to the special arrangement, the starting behavior of the turbines and the torque remain unchanged, even at a flow inlet angle of 45 degrees.

[0031] The first radius and the second radius of each cylindrical VAWT 2, 2' are preferably between 25 cm and 75 cm, particularly preferably 50 cm. Thus, the diameter of each cylindrical VAWT 2, 2' is preferably between 50 cm and 150 cm, particularly preferably 100 cm. These dimensions ensure that a vertical-axis wind turbine module 1 according to the invention is narrow enough to be installed, for example, on the side of the road or in the median of a highway.

[0032] The cross-sections of the first turbine blades 5 and the second turbine blades 5' can have one of the NACA (National Advisory Committee for Aeronautics) profiles, C-profiles, or Lenz-wing profiles. The Lenz-wing profile is particularly advantageous.

[0033] In a further embodiment, the first turbine blades 5 and the second turbine blades 5' are mounted so as to be rotatable about a vertical axis. This allows the rotation of the turbine blades when air flows from one direction to prevent turbine blades arranged opposite to the air flow from braking the turbine.

[0034] In a further embodiment, the first number and the second number are one of 3 or 4.

[0035] In another embodiment, the number of turbines is between 2 and 12. The higher the number of turbines (VAWT) 2 per vertical-axis wind turbine module, the longer the module can be driven, for example, by the wind from a passing truck. Since all turbines 2 of a module 1 are coupled to each other, the first turbine sets all the other turbines in motion upon initial contact, reducing the starting resistance of the turbines following the first turbine and allowing them to accelerate to a higher speed as the truck passes by compared to a single turbine.

[0036] In another embodiment, the first height and the second height are in a range between 100 cm and 600 cm. By selecting this height range, the airflow can be maximized for an average truck height of up to 400 cm.

[0037] For manufacturing reasons and to allow flexibility in the height of the turbine blades 5, 5', it is particularly advantageous in a further embodiment to vertically assemble the first and second turbine blades 5, 5' from several segments. The individual segments can be screwed or riveted together, for example. Each of the segments can have a vertical height between 30 cm and 70 cm, preferably 50 cm.

[0038] The first and second base surfaces 3, 3' and the first and second cover surfaces 4, 4' can be made of aluminum or steel. However, the use of plastic, such as glass fiber reinforced plastic (GRP) and carbon fiber reinforced plastic (CFRP), is also possible.

[0039] The first and second turbine blades 5, 5' can be made of one of aluminum, plastic, in particular polyoxymethylene (POM), glass fiber reinforced plastic (GRP), carbon fiber reinforced plastic (CFRP).

[0040] Fig. 2shows, in a further embodiment, a vertical-axis wind turbine module 1 with at least 3 VAWTs 2 and at least one first wind deflector 7 which is arranged tangentially and parallel to the first horizontal axis between two VAWTs 2 running in opposite directions. The wind deflector can preferably have, in cross-section to its vertical axis, substantially the shape of an isosceles, obtuse-angled triangle, the apex of the obtuse angle of which, in a plan view of the vertical-axis wind turbine module 1, fits into the space between two adjacent VAWTs. Since adjacent VAWTs 2 run in opposite directions to one another and the airstream 9 generated on roads strikes the vertical-axis wind turbine module 1 substantially perpendicular to the first horizontal axis, the wind deflectors 7 can be used to prevent the driving airflow from significantly slowing down one or more of the turbines due to a counterflow.Current studies of vertical-axis wind turbines show that turbine blades that move against the driving airflow during rotation of the vertical-axis wind turbine can cause a power loss of approximately 30%. The wind deflectors 7 are preferably arranged in the space between two adjacent VAWTs 2 such that the apex of the obtuse angle of the wind deflector 7 points opposite the direction of rotation of the adjacent VAWTs 2. The wind deflectors are thus able to prevent the blades from running against the driving airflow and fire the blades when they are in a more favorable position. For example, in a standard vertical turbine with a bilge blade, 1.4 m diameter, and 17% efficiency, the start-up behavior is unreliable. In a headwind, it can only positively utilize half of the turbine (= 0.7 m) and has a high inertia.If you quarter the circular area of ​​the 1.4m turbine, you get four circular areas with a diameter of 70cm, i.e. four turbines. These four turbines can be connected to form a module and run into and against each other (the center distance can be 63cm, for example). If the negative halves of the turbines, which run against the flow, are covered with wind deflectors, the result is that the flow hitting the wind deflectors is additionally directed into the positive area of ​​the turbines without creating turbulence. The effect of the airflow is then only positive and is extended 2.7 times compared to the 1.4m turbine. The start-up behavior is therefore absolutely reliable and the system inertia can be significantly reduced. In comparison, the 1.4m turbine would need an efficiency of around 44% to achieve the performance of the module, which can be extended indefinitely.

[0041] The wind deflectors 7 can also prevent any ice being thrown onto vehicles or the roadway by rotating turbines.

[0042] According to a further embodiment, particulate matter filters can be installed at points on the vertical-axis wind turbine module 1 where the airflow exits the vertical-axis wind turbine module 1 after the turbines have been driven. The airstream guided through the turbine system is forced through the particulate matter filters and thus contributes significantly to air purification, particularly in critical urban areas (e.g., on bypasses or ring roads). Especially in urban traffic, when the vertical-axis wind turbine modules 1 are arranged at the roadside, large quantities of air can be purified in this way and particulate matter pollution can be reduced.

[0043] In the case of the arrangement of the vertical axis wind turbine module 1, for example, in the median strip of a motorway, where the wind of the vehicles comes from opposite directions, the wind deflectors 7, as in Fig. 2 shown, may also be arranged on both opposite sides of the vertical-axis wind turbine module 1.

[0044] For fastening the rotational axes of the VAWTs, each vertical-axis wind turbine module 1 has at least one axle bearing device 8. An advantageous embodiment of a vertical-axis wind turbine module 1, as shown in Fig. 1shown, has a lower and upper axle bearing device 8 for supporting each VAWT 2 at the top and bottom. The upper and lower bearings allow the vertical axes of the VAWTs 2 to be held in a torsion-proof manner, thus ensuring low-vibration and bearing-protective operation. Furthermore, an upper bearing can ensure that the intermeshing turbines remain contact-free even during turbulence. In one embodiment, the vertical structure for the upper bearing can be located in the wind deflector, thus avoiding exposed and therefore performance-inhibiting parts in front of the turbine.

[0045] A further embodiment of the invention comprises a turbine system with at least two of the above-described vertical-axis wind turbine modules 1, which are arranged linearly along the horizontal axis, and with at least one freewheel between two vertical-axis wind turbine modules 1. This freewheel ensures that, when multiple vertical-axis wind turbine modules 1 are used in road traffic, the turbines located in front of the freewheel, as seen in the direction of travel, can be driven by the airstream without having to also drive the turbines located after the freewheel, as seen in the direction of travel. On the other hand, the turbines located after the freewheel, which are caught by the airstream later than the turbines located in front of the freewheel, also drive the turbines located in front of the freewheel, thus increasing their speed and power generation.This arrangement thus improves the start-up behavior of the turbine system in that the entire mass of all turbines does not have to be moved simultaneously upon first contact of the airstream with the turbine system, but initially only those located in front of the freewheel as seen in the direction of travel. At the location of the vertical-axis wind turbine modules 1 arranged linearly along the horizontal axis where a freewheel is installed, the vertical-axis wind turbine modules 1 are arranged such that adjacent turbines 2, 2' do not overlap, in order to avoid a collision of the turbine blades. If wind deflectors 7 are used, symmetrical wind deflectors can advantageously be used at the location of the freewheel.

[0046] By combining several vertical-axis wind turbine modules 1, lengths of up to 100 m can be achieved, for example, with a width of 0.75 m. A truck traveling at 80 km / h (approximately 22 m / s) covers the distance in about 5 seconds. A 100 m long turbine system can have several freewheels so that the turbine system can start up gradually. A following truck then increases the speed and thus the power of the system in the same way. The high number of turbines 2, 2' results in a large mass, which guarantees a longer run-on time. This allows the systems to capture the wind from vehicles, especially trucks and cars, either in the median or on either side of the highway, and convert it into electricity with the help of a generator.The advantages of arranging the present invention in the median or on both sides of the motorway include the preservation of the landscape, the need for no additional land (no wasted land), the avoidance of obstructing or endangering bird flight, the elimination of noise pollution from rotor noise, and the on-site generation of electricity avoiding long transport routes. Even if wind can also power the system, the dependence on wind and solar power is eliminated. This ensures continuous electricity generation, especially on busy roads. Since there are approximately 12,000 km of motorways in Germany - and over 63,000 km in the rest of Europe - these systems can make a significant contribution to the national and European electricity supply. The performance of the turbine system according to the invention and the wind turbine depends, among other things, onThe distance between the turbine and the speed of passing vehicles depends on the traffic density, the distance between the turbine and the speed of the passing vehicles. In order to achieve maximum performance of the turbine system according to the invention and the wind turbine, it is advantageous to install the turbines as close as possible to the roadway. Advantageously, adjacent vertical-axis wind turbine modules 1 of the turbine system, between which no freewheel is arranged, can be arranged linearly along the horizontal axis in such a way that the outermost VAWTs of the individual modules overlap.

[0047] In a further embodiment of the turbine system, at least two of the vertical-axis wind turbine modules 1 have a different number of VAWTs 2. The maximum length of a truck for a trailer in Europe is 18.75 m. At a speed of 80 km / h (= 22 m / s) and an approximate length of a vertical-axis wind turbine module 1 with 6 turbines of 5 m, a truck passes such a module in a quarter of a second. Taking into account the start-up delay of the 6 coupled turbines, it is possible that such a short module may not even start up due to the brief interaction of the airstream with the turbines 2. It can therefore be advantageous to use vertical-axis wind turbine modules 1 with a large number of coupled turbines 2—for example, 12—at the ends of the turbine system.

[0048] A further embodiment of the invention comprises a wind turbine with at least one vertical-axis wind turbine module 1 or a turbine system and with at least one generator connected to the at least one vertical-axis wind turbine module 1 or the turbine system. An advantage of this wind turbine is that several turbines—combined in one or more vertical-axis wind turbine modules—can be operated with one generator. However, it is also possible to operate the wind turbine with several generators. It is particularly advantageous to operate one generator with two modules, each with 4–8 turbines 2.

[0049] The invention is not limited to the exemplary embodiments described above. The scope of the invention is defined by the claims.

Claims

1. A vertical axis wind turbine module (1) having a linear arrangement of at least three cylinder-shaped vertical axis wind turbines, VAWT, (2) along a first horizontal axis, comprising: at least one first cylinder-shaped VAWT (2) having a first bottom surface (3) and a first lid surface (4) each having a first radius and a first number of first turbine blades (5) arranged in the vertical direction between the first bottom surface (3) and the first lid surface (4), the first number being at least one and the first turbine blades (5) having a first height, and at least one second cylinder-shaped VAWT (2') having a second bottom surface (3') and a second lid surface (4') each having a second radius and a second number of second turbine blades (5') arranged in the vertical direction between the second bottom surface (3') and the second lid surface (4'), the second number being equal to or greater than the first number and the second turbine blades (5') having a second height that is greater than the first height, the distance of the vertical axes of adjacent VAWTs (2, 2') along the first horizontal axis being shorter than the sum of the radii of the adjacent VAWTs (2, 2'), and wherein the first bottom surfaces (3) and the first lid surfaces (4) of the at least one first cylinder-shaped VAWT (2) each have a second number of recesses (6) at an outer edge that are configured such that the second turbine blades (5') can engage there without making contact, and wherein the plurality of VAWTs (2, 2') are coupled with one another and the first turbine blades (5) are formed opposite to the second turbine blades (5') as far as their force development is concerned in such a way that, during operation, adjacent VAWTs (2, 2') run opposite to one another along the first horizontal axis, and characterized by at least one first wind deflector (7) that is arranged tangentially and in parallel to the first horizontal axis between two VAWTs (2) that run opposite to one another, and at least one second wind deflector (7) that is arranged tangentially and in parallel to the first horizontal axis between two VAWTs that run opposite to one another and, with respect to the first horizontal axis, on the side opposite the first wind deflector (7).

2. The vertical axis wind turbine module (1) according to claim 1, wherein the cross-sections of the first turbine blades (5) and the second turbine blades (5') comprise one of a NACA (National Advisory Committee for Aeronautics) profile, a C-profile or a Lenz blade profile.

3. The vertical axis wind turbine module (1) according to any one of claims 1 or 2, wherein the first turbine blades (5) and the second turbine blades (5') are supported rotatably about a vertical axis.

4. The vertical axis wind turbine module (1) according to any one of claims 1 to 3, wherein the first number and the second number is one of 3 or 4.

5. The vertical axis wind turbine module (1) according to any one of claims 1 to 4, having a turbine number of VAWTs (2, 2'), wherein the turbine number is between 3 and 12.

6. The vertical axis wind turbine module (1) according to any one of claims 1 to 5, wherein the first height and the second height are within a range of between 100 cm and 600 cm.

7. The vertical axis wind turbine module (1) according to any one of claims 1 to 6, wherein the first and second turbine blades (5, 5') are assembled from at least two segments in the vertical direction and each of the segments has a height between 30 cm and 70 cm, preferably 50 cm, in the vertical direction.

8. The vertical axis wind turbine module (1) according to any one of claims 1 to 7, wherein the first and second bottom surfaces (3, 3') and the first and second lid surfaces (4, 4') are made of one of aluminum or steel.

9. The vertical axis wind turbine module (1) according to any one of claims 1 to 8, wherein the first and second turbine blades (5, 5') are made of one of aluminum, plastic, especially polyoxymethylene (POM), glass fiber reinforced plastic (GFK), carbon fiber reinforced plastic (CFK).

10. The vertical axis wind turbine module (1) according to any one of claims 1 to 9, wherein each of the VAWTs (2, 2') is supported at the top and the bottom.

11. The vertical axis wind turbine module (1) according to any one of claims 1 to 10, wherein the diameter of each cylinder-shaped VAWT (2, 2') amounts to between 50 cm and 150 cm, preferably 100 cm.

12. A turbine system, comprising: at least two vertical axis wind turbine modules (1) according to any one of claims 1 to 11, that are arranged linearly along the horizontal axis, and at least one freewheel between two vertical axis wind turbine modules (1).

13. The turbine system according to claim 12, wherein at least two of the vertical axis wind turbine modules (1) comprise a different number of VAWTs (2, 2').

14. A wind power station, comprising at least one vertical axis wind turbine module (1) according to any one of claims 1 to 11 or a turbine system according to any one of claims 12 to 13 and at least one generator that is connected to the at least one vertical axis wind turbine module (1) or the turbine system.