Wind power generation modules and installation methods

Abstract

The present invention provides a vertical-axis or horizontal-axis wind turbine that eliminates the need for alignment of multiple bearings supporting the impeller and the input shaft of the generator that extracts energy from the impeller, resulting in improved starting performance. [Solution] In a wind turbine system in which the blades receive the maximum force from the wind when the wind direction is perpendicular to the rotational centerline of the impeller, the wind power generation module is characterized in that it consists of an impeller in which a disc, a bearing mounting part, and a blade support plate, and the blade support plate and the blades are fastened together to form an integrated unit, a generator that converts rotational energy into electrical energy, and a single shaft, the generator being attached to the shaft and the impeller being attached to the shaft via a bearing, the impeller rotating around the shaft and transmitting the rotation of the impeller to the rotor of the generator.

Description

Technical Field

[0001] The present invention relates to the configuration of wind power generation equipment and its installation method.

Background Art

[0002] Wind turbines used in wind power generation equipment that obtain power by receiving wind include, for example, horizontal-axis wind turbines such as propeller-type wind turbines, and vertical-axis wind turbines such as Darrieus-type wind turbines and gyro-mill wind turbines. Each has a rotating shaft and one or more blades provided around the rotating shaft.

[0003] In addition, there is a proposal for a horizontal-axis wind turbine with a shape in which a vertical-axis wind turbine is laid horizontally.

[0004] As types of wind turbines that rotate by receiving wind, there are drag-type wind turbines that utilize the force of the wind pushing on the blades of the wind turbine, and lift-type wind turbines that utilize the difference in the force of the airflow passing through both sides of the blades of the wind turbine.

[0005] FIG. 22 shows the impeller of a Savonius-type wind turbine, which is one of the drag-type wind turbines among vertical-axis wind turbines. The impeller of the wind turbine is also called a turbine or a rotor, and is a rotating body made so that at least one blade rotates around one rotating shaft. Blades 3 having a shape in which a cylinder is vertically divided into two are fastened to upper and lower disks 12. A hole is opened in the center of the disk, and a shaft 1 passes through it. The shaft and the disk are attached at a shaft mounting portion 4' and are integrated.

[0006] FIG. 24 is a plan view showing the cross section and airflow of the Savonius-type wind turbine. At the convex side 3a of the blade, the airflow 44 is divided to the left and right of the blade. At the concave side 3b of the blade, the airflow 44 is received. The airflow 44 flowing in from the convex side 3a is also received. As a result, since the force received by the concave side 3b from the airflow 44 is greater than that of the convex side 3a, the impeller rotates in a direction in which the concave side 3b moves to the leeward side.

[0007] As described above, since the impeller is integrated with the shaft, when the impeller rotates, the shaft also rotates together.

[0008] Impellers, consisting of a rotating shaft and blades, can be configured to be directly attached to a gearbox or generator, or they can be configured to be supported by one or more bearings.

[0009] Figure 18 shows one example of a vertical-axis wind turbine installation. The impeller, in which the shaft 1, blades 3, and disc 2 are integrated, rotates around its axis. The shaft is supported by an upper bearing 24a and a lower bearing 24b located below the impeller. The upper bearing 24a and the lower bearing 24b are housed in upper bearing housings 23a and lower bearing housings 23b, respectively, on the support beam 26. The generator 28 is mounted on a base 29 on the floor surface 33. The shaft 1 and the generator rotation shaft 30 of the generator 28 are connected by a coupling 27.

[0010] Figure 19 shows another example of a vertical-axis wind turbine installation. The impeller, in which the shaft 1, blades 3, and disc 2 are integrated, rotates around its axis. The shaft is supported by upper bearings 24a and lower bearings 24b located above and below the impeller. The upper bearings 24a and lower bearings 24b are housed in upper bearing housings 23a and lower bearing housings 23b, respectively, on a frame constructed of columns 25 and beams 26. The generator 28 is mounted on a base 29 on the floor surface 33. The shaft 1 and the generator rotation shaft 30 of the generator 28 are connected by a coupling 27.

[0011] A wind turbine structure has been proposed in which the impeller does not use bearings, but is directly connected to the upper and lower generators mounted on the frame using, for example, a universal joint, thereby eliminating the need for centering (Reference 1).

[0012] A wind turbine structure has been proposed in which the impeller's rotating shaft has a double structure with an inner and outer section, and the rotating shaft is installed so that it overlaps with the hollow intermediate fixed shaft on the base side equipped with the generator, and at least two bearings are provided in the overlapping section to align it (Reference 2). [Prior art documents] [Patent Documents]

[0013] [Patent Document 1] Japanese Patent Publication No. 2022-91578 [Patent Document 2] Japanese Patent Publication No. 2006-207374 [Overview of the Initiative] [Problems that the invention aims to solve]

[0014] When constructing a wind power generation system in which a single impeller is supported by multiple bearings, as in the aforementioned installation example, the accuracy of the mounting positions of the bearings and the generator is crucial. As shown in Figure 20, the upper bearing centerline 34a of the upper bearing 24a, the lower bearing centerline 34b of the lower bearing 24b, and the generator centerline 34c must not be misaligned and must be in a straight line. Furthermore, as shown in Figure 21, there should be no angle between the upper bearing centerline 34a of the upper bearing 24a, the lower bearing centerline 34b of the lower bearing 24b, and the generator centerline 34c. This positional adjustment is called centering.

[0015] The coupling used to connect the rotating shaft and the generator input shaft has limits to the permissible eccentricity and angular deviation, and it is desirable that there be no positional or angular displacement even when using a coupling.

[0016] If the positions or angles of multiple bearings and the central axis of the generator are misaligned, the rotational resistance of the impeller's rotating shaft increases, reducing the energy transmitted to the connected generator and thus the output power.

[0017] Adjusting the positions of the bearing and the generator during installation requires alignment and height adjustment by filling gaps, increasing labor costs. Pre-fabricating the frame with high positional accuracy requires machining equipment commensurate with the frame's size. This presents limitations on the size of the machining equipment and increases processing costs.

[0018] The reason for these increased costs is that the generator and its respective bearings, which are attached to the rotating shaft of an impeller where the blades and rotating shaft are integrated, are fixed to the frame or floor and are therefore constrained in terms of position and angle, preventing them from being aligned in a straight line.

[0019] In addition, in order to improve the starting performance of the wind turbine, it is desirable to reduce the weight of the impeller. The moment of inertia is reduced, and the ease of change in rotation is improved.

[0020] The problem to be solved by the present invention is to provide a vertical-axis wind power generation facility or a horizontal-axis wind power generation facility for a wind turbine with good starting performance, in which a plurality of bearings supporting the wind turbine and the centering of a generator for extracting the energy of the wind turbine are minimized.

Means for Solving the Problem

[0021] In a wind turbine facility where the blades receive the maximum force from the wind when the wind direction is perpendicular to the rotation center line of the impeller, a disk, a bearing mounting portion, and a blade support plate, and a blade support plate and a blade are respectively fastened and integrated into an impeller, a generator that converts rotational energy into electrical energy, and a single shaft, the generator is attached to the shaft, the impeller is attached to the shaft via a bearing, the impeller rotates around the shaft, and the rotation of the impeller is transmitted to the rotor of the generator, which is characterized as a wind power generation module.

[0022] The bearing only contributes to the rotation between the shaft and the impeller. For installation on a pedestal, both ends of the shaft and the pedestal are fastened, for example, with a string.

Effect of the Invention

[0023] According to the present invention, a bearing for the impeller and a generator are attached on a single shaft, and the bearing and the generator are not restricted in position by a pedestal or a floor surface. The bearing and the generator can be centered automatically, and the centering work required in conventional wind power generation facilities is minimized.

[0024] Since the generator is attached to the shaft, for example, even if the shaft shakes, the impeller and the generator shake in synchronization with the shaft, so the distance between the impeller and the generator does not change, and the energy transmission efficiency is stable.

[0025] Since the shaft of the impeller can be directly attached to the pedestal, the options for the fastening method of the attachment part increase, the structural strength can be enhanced, and the risk of damage can be reduced even in strong winds.

[0026] Adjustment of bearing misalignment and equipment such as couplings are unnecessary or minimized, and the structure can be simplified.

[0027] Since the shaft of the impeller is fixed and not included in the rotating part, the rotating part of the impeller can be lightened.

Brief Description of the Drawings

[0028] [Figure 1] Front view showing the state where the wind power generation module of the first embodiment of the present invention is installed on the pedestal [Figure 2] Perspective view of the state of FIG. 1 [Figure 3] Front view showing the wind power generation module of the first embodiment of the present invention [Figure 4] Front view of the first installation method showing the state where the columns, beams, and floor surface of the pedestal in FIG. 1 are inclined [Figure 5] Detailed external view and detailed cross-sectional view around the bearing of the first embodiment [Figure 6] Detailed external view and detailed cross-sectional view around the bearing on the generator side of the first embodiment [Figure 7] Front view showing the wind power generation module of the second embodiment of the present invention [Figure 8] Front view showing the wind power generation module of the third embodiment of the present invention [Figure 9] Front view showing the wind power generation module of the fourth embodiment of the present invention [Figure 10] Front view showing the state where the wind power generation module of the first embodiment is installed on the horizontal axis [Figure 11] Perspective view of the state of FIG. 10 [Figure 12] Plan view of the impeller [Figure 13] Plan view of the impeller seen from above [Figure 14] Front view of the impeller [Figure 15] Front view of the impeller [Figure 16] Side view of the impeller [Figure 17] Side view of the impeller [Figure 18] Front view of a typical vertical-axis wind turbine setup, where the impeller's rotation axis is supported by two bearings beneath the impeller. [Figure 19] Front view of a typical vertical-axis wind turbine system, where the rotation axis of the impeller is supported by one bearing each above and below the impeller. [Figure 20] Front view of Figure 18 showing the bearing and generator input shaft with misaligned centerlines. [Figure 21] Front view of Figure 18, showing the bearing and generator input shaft with their centerlines tilted at different angles. [Figure 22] Perspective view of the impeller of a typical Savonius wind turbine. [Figure 23] Perspective view of the impeller of the present invention [Figure 24] Plane cross-section of the impeller and airflow of a Savonius-type wind turbine. [Figure 25] Perspective view of the blade support plate [Figure 26] Perspective view showing the blade support plate and disc fastened together. [Figure 27] Front view of the second installation method example of the present invention [Figure 28] Front view of the third installation method example of the present invention [Figure 29] Front view of the fourth installation method example of the present invention [Modes for carrying out the invention]

[0029] Horizontal-axis wind turbines, also known as propeller-type wind turbines, rotate with their axis of rotation parallel to the wind direction. Vertical-axis wind turbines have their axis of rotation oriented vertically and can utilize wind power regardless of wind direction. When a vertical-axis wind turbine is laid on its side, if the axis of rotation and the wind direction are perpendicular, it can utilize wind power regardless of the vertical angle of the wind direction. Regardless of whether the axis of rotation is vertical or horizontal, a wind turbine that experiences the maximum force from the wind on its blades when the wind is perpendicular to the axis of rotation, and whose sweeping region is cylindrical around the axis of rotation, will be referred to as a cylindrical wind turbine in this case.

[0030] Figure 23 shows the impeller 101 of a cylindrical wind turbine according to one embodiment of the present invention. It consists of a bearing mounting portion 4, a disc 12, and blades 3.

[0031] The impeller of a typical Savonius wind turbine shown in Figure 22 differs from the impeller 101 of this embodiment shown in Figure 23 in that it does not include shaft 1.

[0032] Figures 1, 2, and 3 illustrate a first embodiment of the present invention.

[0033] Figure 3 shows the configuration of shaft 1, impeller A102, and generator 7. Shaft 1 is made of iron pipe. Impeller A102 is composed of the bearing mounting portion 4, disc 12, and blades 3 of impeller 101 shown in Figure 23, as well as a blade retaining plate 13 and impeller gear 6 integrated together. Impeller A102 is fastened with the bearing mounting portion 4, disc 12, and blade support plate 13, and the blade support plate 13 and blades 3. At one end of impeller A102, the bearing mounting portion 4 and impeller gear 6 are fastened together and integrated.

[0034] The generator 7 is incorporated into the generator housing 9 and is attached to the shaft 1 at one end of the impeller A102.

[0035] In other words, shaft 1 penetrates the generator housing 9, and is mounted so that the rotation center of impeller A102 coincides with the axis of shaft 1.

[0036] The entire generator housing 9, into which the generator 7 is incorporated, can be considered as a generator.

[0037] The bearing 5 is installed between the bearing mounting portion 4 inside the impeller A102 and the shaft 1. The bearing 5 plays a role in reducing friction between the rotating and non-rotating sides and making the rotation smoother. In this embodiment, the impeller A102 is the rotating side and the shaft 1 is the non-rotating side.

[0038] The impeller gear 6 and the generator input rotating shaft gear 10 function as transmission equipment. The rotation of the impeller A102 is transmitted by the impeller gear 6 to the generator input rotating shaft gear 10, causing the generator input rotating shaft 8 to rotate and the generator 7 to generate electricity.

[0039] The impeller A102 and the generator housing 9 are fixed by a stopper 11 so as not to move in the direction of axis 1.

[0040] Figure 2 is a perspective view of the state shown in Figure 1.

[0041] When the impeller A102 rotates, a rotational torque 41 is generated on the impeller gear 6. This rotational torque 41 on the impeller gear becomes a force that rotates the generator housing 9 around the shaft 1. When the generator housing is able to rotate freely around the shaft 1, and a load is applied to the generator 7 for power generation, the generator housing 9 will try to rotate around the shaft 1 in conjunction with the rotation of the impeller A102. In order for the generator 7 to generate power in response to the rotation of the impeller 102, the rotation of the generator housing 9 around the shaft 1 must be suppressed. For example, a rotation-preventing mounting part 22 is provided on the side of the generator housing 9 furthest from the shaft 1, a rotation-preventing wire 21 is passed through the rotation-preventing mounting part 22, and the rotation-preventing wire 21 is attached to the beam 26. The generator housing 9 and the generator 7 housed within the housing are no longer able to rotate around the shaft 1, and the generator 7 becomes capable of generating power in response to the rotation of the impeller A102.

[0042] The further the anti-rotation mounting portion on the generator housing 9 is located from the shaft 1, the less force is required to prevent the generator housing 9 from rotating around the shaft 1.

[0043] The anti-rotation device around the shaft 1 of the generator housing 9 does not need to be rigidly fixed; it is sufficient to prevent the generator housing 9 from continuously rotating around the shaft 1. Therefore, a fastening method with some play, such as the anti-rotation wire 21, is adequate.

[0044] The mounting point for the anti-rotation attachment part of the anti-rotation wire 21 can be either a beam 26 or a column 25.

[0045] Figure 25 shows the blade support plate 13. It consists of a flat section 13a and a bent section 13b. Screw holes 15 are provided in the flat section 13a for fastening to the disc 12.

[0046] Figure 26 shows the state in which the blade support plate 13 and the disc 12 are fastened together. At both ends of the impeller A102, the flat plate portion 13a is placed inside the disc 12 with the bent portion 13b facing inward towards the impeller A102, and fastened together, for example, with screws.

[0047] The bending position of the bent portion 13b is set to match the desired curved shape of the blade 3. The blade 3 is attached along the bent portion 13b and fastened to the bent portion, for example, with a cable tie. This results in the blade 3 having the desired curved shape.

[0048] When using blades 3 made of a soft material, the blades 3 may bend due to centrifugal force during rotation. To maintain the shape of the blades 3 and reinforce the impeller A102, one or more blade support plates 13 may be used in the middle of the impeller A102. It is desirable that the blade support plates 13 used in the middle also use a bearing mounting section 4 and a bearing 5.

[0049] If a hard material is used for blade 3, the blade support plate 13 in the middle of the impeller A102 is not necessary.

[0050] The impeller A102 is mounted on a shaft 1 oriented vertically via a bearing 5 housed in a bearing mounting portion 4.

[0051] The configuration shown in Figure 3 constitutes a single wind power generation module 100.

[0052] Figure 1 shows the wind power generation module 100 mounted on a frame consisting of columns 25 and beams 26. Both ends of the shaft 1 of the wind power generation module 100 are fastened to the beams 26 of the frame with fastening cords 14. The function of the fastening cords 14 is to hold the wind power generation module 100 so that it does not fall off the beams 26 or columns 25 of the frame. The shaft 1 fastened to the columns 25 or beams 26 by the fastening cords 14 does not rotate together with the impeller A102.

[0053] Figure 5 shows a detailed view of the area around bearing 5 of impeller A102. The right side of the center line 1' of shaft 1 is a cross-sectional view, and the left side is an external view.

[0054] When the blade 3 receives wind, the concave surface of the blade 3 receiving the wind is pushed downwind. The blade 3 is fastened to the blade support plate 13, and the blade support plate 13, the disc 12, and the bearing mounting part 4 are fastened together with bolts 16 and nuts 17 to form an impeller A102. The impeller A102 is attached to the shaft 1 via a bearing 5 and a bearing spacer 19, so it rotates around the shaft 1 in the direction in which the blade 3 is pushed.

[0055] The disc 12 has the effect of suppressing the flow of wind received by the blades 3 from flowing through from above and below the blades 3, thereby contributing to an improvement in the energy efficiency of the wind turbine equipment.

[0056] A snap ring 20 is attached to the bearing spacer 19, which supports the bearing 5 to prevent it from falling downwards when the shaft 1 is used vertically.

[0057] The bearing spacer 19 is used to adjust the gap when the outer diameter of the shaft 1 and the inner ring diameter of the bearing 5 are different. In this case, the bearing spacer 19 becomes part of the shaft 1 and performs the function of supporting the impeller A102.

[0058] One of the key features of this embodiment is that the centers of all the bearings 5 ​​that contribute to the rotation of the impeller A102 are aligned in a straight line by the shaft 1 or the bearing spacer 19.

[0059] The cross-sectional shape of the shaft 1 is not limited to circular or rectangular; it can be solid or hollow. Furthermore, the cross-sectional shape of the shaft 1 does not need to be uniform; for example, a configuration in which a portion is thickened to improve strength is also conceivable.

[0060] Figure 6 shows a detailed view of the area around the bearing 5 on the side to which the generator 7 is attached. The right side of the center line 1' of shaft 1 is a cross-sectional view, and the left side is a front view.

[0061] When the blade 3 receives wind, the concave surface of the blade 3 is pushed downwind. The blade 3 is fastened to the blade support plate 13, and the blade support plate 13, the disc 12, and the bearing mounting portion 4 are fastened together with bolts 16 and nuts 17. The fitting portion of the impeller gear 6 is fitted between the bearing mounting portion 4 and the bearing 5. The shaft 1, the bearing spacer 19, the bearing 5, the fitting portion of the impeller gear 6, and the bearing mounting portion 4 are tightened together with a metal band 18 to form an integrated impeller A102. The impeller A102 rotates around the shaft 1 with the outer ring of the bearing 5 and its outer side in the direction in which the blade 3 is pushed, and the impeller gear 6 also rotates.

[0062] The impeller gear 6 and the generator input rotating shaft gear 10, which are power transmission devices, mesh together. The generator housing 9 and the generator 7 are not rotated around the shaft 1 because a rotation-preventing wire 21 (not shown in the figure) is attached to the rotation-preventing mounting part 22 and the beam 26. Therefore, when the impeller A102 rotates, the impeller gear 6 rotates the generator input rotating shaft gear 10 and the generator input rotating shaft 8, and transmits the power to the generator 7.

[0063] The magnet 35, which is the rotor attached to the generator input rotating shaft 8, rotates, and electricity is generated in the coil 36, which is the stator.

[0064] The distance between shaft 1 and the generator input rotating shaft 8, that is, the distance D between the shaft centerline 1' and the generator input rotating shaft centerline 8', is the sum of the reference circle radius d1 of the impeller gear 6 and the reference circle radius d2 of the generator input rotating shaft gear 10.

[0065] Since the impeller A102 rotates around shaft 1 and the generator 7 is attached to shaft 1, the change in distance ΔD between the shaft centerline 1' and the generator input rotation shaft centerline 8' can be minimized, thus stably transmitting the rotation of the impeller A102 to the generator 7.

[0066] ΔD = D - (d1 + d2)

[0067] If the generator 7 is installed independently of the shaft 1, when the shaft 1 oscillates, the distance D between the shaft centerline 1' and the generator input rotation shaft centerline 8' changes, and ΔD increases. If D becomes too large and the shaft centerline 1' and the generator input rotation shaft centerline 8' are too far apart, the rotation of the impeller gear 6 cannot be transmitted to the generator input rotation shaft gear 10 and it will just spin freely.

[0068] Since the positions of both the impeller A102 and the generator 7 are determined by the shaft 1, when the shaft 1 oscillates due to the rotation of the impeller A102, the generator 7 also follows the oscillation, and the rotation of the impeller A102 is transmitted to the generator 7 with minimal influence from the oscillation. ΔD can be minimized.

[0069] In the area where the shaft 1 penetrates the generator housing 9, the length in the direction of the shaft 1, which can be considered the thickness of the generator housing 9, is made sufficiently long relative to the clearance between the inner diameter of the penetration part of the generator housing 9 and the outer diameter of the shaft 1, thereby making the swing angle of the generator housing 9 relative to the shaft 1 sufficiently small. Since the angle of the generator input rotating shaft 8 depends on the angle of the generator housing 9, the angle between the shaft 1 and the generator input rotating shaft 8 can be made sufficiently small.

[0070] Since the positions of both the impeller A102 and the generator 7 are determined by the shaft 1, when the shaft 1 oscillates due to the rotation of the impeller A102, the generator 7 also follows the oscillation, and the rotation of the impeller A102 is transmitted to the generator 7 with minimal influence from the oscillation. ΔD can be minimized.

[0071] As described above, the generator input rotation shaft 8 and shaft 1 of the generator 7 are sufficiently parallel to each other, and the distance between the shafts can be kept constant. Therefore, the wind power generation module 100 can achieve a state in which shaft 1 and the generator 7 are sufficiently aligned.

[0072] As shown in Figure 3, each bearing 5 that contributes to the rotation of the impeller A102 is mounted on a single shaft 1, so misalignment and angular misalignment between the bearings 5 ​​and the central axis are unlikely to occur. The material and dimensions of the shaft 1 should be selected to allow for deflection of the shaft due to strong winds or the weight of the impeller A102.

[0073] As described above, in this wind power generation module 100, all bearings on the shaft 1 can be aligned with the shaft 1 to a state where they are sufficiently centered.

[0074] Therefore, in this wind power generation module 100, all bearings on the shaft 1 are sufficiently aligned with the shaft 1, and the generator 7 is also sufficiently aligned with the shaft 1.

[0075] The impeller A102 is less susceptible to rotational influence even if the upper and lower beams 26 are not parallel, as shown in Figure 4, or if the column 25 is tilted, in the frame that fastens the shaft 1.

[0076] Figure 7 shows a second embodiment of the present invention.

[0077] The impeller gear 6 and the generator 7 are attached to both ends of the impeller A102, respectively.

[0078] Figure 8 shows a third embodiment of the present invention.

[0079] The structure of the impeller A102 and the mounting of the bearing 5 between the shaft 1 and the impeller A102 are the same as in the first embodiment. At least one pair of N-pole and S-pole magnets 35 are attached to one end of the impeller A102, arranged evenly and concentrically. A coil 36 is attached to a coil base 38 on the shaft 1, facing the magnets 35. The magnets 35 and the coil 36 constitute the generator 7.

[0080] Since the impeller A102 and coil base 38 are positioned solely by the shaft 1, they are not affected by the configuration of the beams 26 and columns 25.

[0081] Figure 9 shows a fourth embodiment of the present invention.

[0082] At least one pair of N-pole and S-pole magnets 35, arranged evenly in concentric circles, are attached to both ends of the impeller A102. Coils 36 are attached to coil bases 38 on the shafts 1 on both sides of the impeller A102, facing the magnets 35.

[0083] In the third and fourth embodiments, the number of magnets 35 and coils 36 depends on the desired generator configuration.

[0084] Figures 10 and 11 show the cylindrical wind turbine module of Embodiment 1 with axis 1 as the horizontal axis, but the same effect as when installed on a vertical axis can be obtained. The same applies to Embodiments 2 to 4.

[0085] Figure 4 shows a first example of an installation method for the wind power generation module 100 of the present invention.

[0086] The frame, which consists of columns 25 and beams 26, has both ends of the shaft 1 of the wind turbine module 100 fastened to the beams 26 with fastening cords 14. The inclination of the columns 25, beams 26, and floor surface 33 has little effect on the rotation of the impeller A102 of the wind turbine module 100.

[0087] Figure 27 shows a second example of the installation method for the wind power generation module 100 of the present invention.

[0088] Multiple wind turbine modules 100 are fastened to the mounting frame. The orientation of the wind turbine modules 100 can be freely designed, and both ends of the shaft 1 of the wind turbine modules 100 are fastened to the columns 25 and beams 26. The generator housing 9 is attached to the columns 25 and beams 26 with anti-rotation wires 21 (not shown) to prevent the generator housing 9 from rotating.

[0089] Figure 28 shows a third installation method example of the wind power generation module 100 of the present invention.

[0090] The ends of the shaft 1 of the wind turbine module 100 are fastened to wire ropes 37 that are stretched parallel to each other vertically. The generator housing 9 is attached to the wire ropes 37 with anti-rotation wires 21 (not shown) to prevent the generator housing 9 from rotating. Because the wind turbine module 100 is lightweight, it can be easily installed at high altitudes. Wind conditions are generally better at higher altitudes than ground level, making them desirable locations for wind turbine installation.

[0091] Figure 29 shows a fourth installation method example for the wind power generation module 100 of the present invention.

[0092] The shafts 1 of the wind turbine modules 100 are connected by a wire rope 37, allowing them to be installed as a single unit of wind turbine modules. The generator housing 9 is attached to the wire rope 37 by an anti-rotation wire 21 (not shown) to prevent the generator housing 9 from rotating. This system is suitable for areas with many updrafts and downdrafts, such as mountainous or valley regions.

[0093] The electricity generated by generator 7 is stored in an external battery via wires not shown in the diagram, or connected to the power grid and used for other purposes.

[0094] In the first embodiment, when the wind power generation module 100 is used with the shaft 1 not horizontal, if the generator 7 is mounted above the impeller A102, the generator input rotation shaft 8 faces downward relative to the generator housing 9, making it difficult for raindrops and dust to enter the generator 7 from around the rotation shaft.

[0095] The blades 3 of the cylindrical wind turbine were made of corrugated material. By using waves oriented along the circumferential direction of the cylinder, the blades 3 have rigidity in the direction of the rotation axis, making them easy to maintain their shape, while being easy to bend in the direction of the cylinder. The blades 3 are not limited to a corrugated shape; flat material may also be used.

[0096] By appropriately setting the gear ratio, the transmission device that transmits power between the impeller A102 and the generator 7 can be configured to match the performance of the impeller A102, the output of the generator 7, and the wind characteristics of the wind turbine installation site.

[0097] The transmission device that connects the impeller A102 and the generator 7 automatically changes its gear ratio according to the wind speed, thereby enabling a configuration that continuously matches the performance of the impeller A102, the output of the generator 7, and the wind characteristics of the wind turbine installation site.

[0098] In the second to fourth installation methods, by setting each individual wind turbine module 100 to a different gear ratio, it is possible to mix and arrange wind turbine modules 100 with a small gear ratio that can generate power even in weak wind conditions and wind turbine modules 100 with a large gear ratio that generate more power in strong wind conditions.

[0099] The connection between shaft 1 and beam 26, or shaft 1 and column 25, or shaft 1 and wire rope 37 can be fixed or free support, and a configuration suitable for the installation environment should be selected.

[0100] The support structure is not limited to a single column 25; it can be constructed by combining multiple members to increase structural strength.

[0101] The axis 1 of the cylindrical wind turbine is not limited to vertical and horizontal orientations, but is also useful in an inclined position.

[0102] The wind turbine equipment according to the present invention is not limited to installation on land, but can also be installed on a floating structure on water.

[0103] The generator input rotating shaft 8 of the generator 7 is not limited to being in a position parallel to shaft 1, but is also subject to all positions where the positional relationship with shaft 1 and impeller A102 is defined, whether perpendicular or at any other angle.

[0104] This invention is useful not only for drag-type wind turbines but also for lift-type wind turbines. [Explanation of symbols]

[0105] 1 axis 1' axis center line 3 feathers 3a A blade that is convex in the direction of the wind 3b Feathers with a concave shape in the direction of the wind 4. Bearing mounting section 4' Shaft mounting section 5 bearings 5a Upper bearing 5b Lower bearing 6 Impeller gear 7. Generator 8. Generator input rotating shaft 8' Generator input rotation axis centerline 9 Generator housing 10 Generator input rotating shaft gear 11 Stopper 12 disks 13. Blade support plate 13a Blade support plate flat section 13b Folding section of the wing support plate 14 Fastening cord 15 screw holes 16 volts 17 Nuts 18 Metal Bands 19. Bearing spacer 20 snap rings 21 Anti-rotation wire 22 Anti-rotation mounting part 23a Upper bearing housing 23b Lower bearing housing 24a Upper bearing 24b Lower bearing 25 pillars 26 Beam 27 Coupling 28 Generators 29 Pedestal 30 Generator Rotating Shaft 33 Floor surface 34a Upper bearing center line 34b Lower bearing center line 34c Generator centerline 35 Magnets 36 coils 37 Wire rope 38 Coil base 41 Rotational torque generated in the impeller gear 44 Airflow 100 wind turbine modules 101 Impeller 102 Impeller A

Claims

1. In a wind turbine system where the blades receive the maximum force from the wind when the wind direction is perpendicular to the rotational centerline of the impeller, An impeller in which a disc, a bearing mounting portion, and a blade support plate are fastened together and integrated, and the blade support plate and the blades are also fastened together. A generator that converts rotational energy into electrical energy, It consists of a single axis, The generator is mounted on the shaft. The impeller is mounted on the shaft via a bearing, and the impeller rotates around the shaft. The rotation of the impeller is transmitted to the rotor of the generator. Wind power generation module characterized by

2. The generator input rotation shaft is not on the same straight line as the shaft that passes through the impeller. The wind power generation module according to claim 1, comprising a transmission device that interlocks the impeller end and the generator input rotation shaft.

3. The impeller is equipped with a rotor for generating electricity at its end. A stator for power generation is mounted on a base on the shaft, facing the rotor. Wind power generation module according to claim 1

4. A wind power generation module according to claim 2 or 3, wherein one end of the impeller has a power generation function.

5. A wind power generation module according to claim 2 or 3, having power generation functions at both ends of the impeller.

6. A blade support plate is attached in the middle of the impeller, fastened to a bearing on the shaft and a bearing mounting part. The wind turbine module according to claims 1 to 3, wherein the blade support plate is fastened to the blade.

7. The wind turbine module according to claims 1 to 3, wherein the impeller blades are made of corrugated sheet material.

8. Wind turbine equipment with modules according to claims 1 to 3 mounted on a frame

9. A wind power generation module according to claim 2, comprising a rotation stopper that prevents the housing incorporating the generator from rotating together with the impeller.

Images