Power generation device and method for controlling power generation device

Abstract

The invention provides a power generation device and a control method of the power generation device, and the power generation device comprises a tower column; the mounting shaft is arranged on the tower column, and the axis of the mounting shaft and the axis of the tower column are arranged at an angle; the first blade group is rotatably arranged on the mounting shaft; the second blade group is rotatably arranged on the mounting shaft, and the first blade group and the second blade group are arranged at intervals in the axis direction of the mounting shaft; the first blade set and the second blade set are both connected with the input end of the generator. According to the technical scheme, the problem that in the prior art, wind power generation equipment is low in wind energy utilization efficiency is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation devices, and in particular to a power generation device and a control method for the power generation device. Background Art

[0002] In the field of renewable energy, wind power generation has become one of the important means to reduce greenhouse gas emissions and reduce dependence on fossil fuels worldwide. Wind power generation equipment mainly consists of rotating blades, horizontal shafts, towers and generators. The rotating blades are rotatably arranged on the horizontal shaft. The blades receive wind power to drive the rotation, thereby driving the generator to generate electricity.

[0003] However, due to the size limitation of the rotating blades, the range in which the wind power generation equipment in the related art can receive wind energy is restricted, thereby affecting the wind energy collection efficiency and power generation, resulting in low wind energy utilization efficiency of the wind power generation equipment. Summary of the invention

[0004] The main purpose of the present invention is to provide a power generation device and a control method for the power generation device to solve the problem of low wind energy utilization efficiency of wind power generation equipment in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a power generation device, comprising: a tower column; a mounting shaft, which is arranged on the tower column, and the axis of the mounting shaft is arranged at an angle to the axis of the tower column; a first blade group, which is rotatably arranged on the mounting shaft; a second blade group, which is rotatably arranged on the mounting shaft, and the first blade group and the second blade group are arranged at intervals along the axial direction of the mounting shaft; and a generator, and the first blade group and the second blade group are both connected to the input end of the generator.

[0006] Furthermore, the first blade assembly includes: a first blade substrate rotatably disposed on the mounting shaft; a first piezoelectric plate disposed on the first blade substrate; and a first photovoltaic panel disposed on a side of the first piezoelectric plate away from the first blade substrate.

[0007] Furthermore, the first blade group also includes a support frame connected between the first blade substrate and the first piezoelectric plate, the support frame includes a first frame body connected to the first end of the first piezoelectric plate and a second frame body connected to the second end of the first piezoelectric plate, and the first end of the first piezoelectric plate is arranged opposite to the second end of the first piezoelectric plate.

[0008] Furthermore, the first frame is a deformable frame, which has a deformed state and a restored state; the first piezoelectric plate is a deformable plate, and when the deformable plate is deformed, the deformable frame is in a deformed state; when the deformable plate is not deformed, the deformable frame is in a restored state.

[0009] Further, the first frame and the first end of the first piezoelectric plate are hinged, and / or the second frame and the second end of the first piezoelectric plate are hinged.

[0010] Furthermore, there are a plurality of first photovoltaic panels, and the plurality of first photovoltaic panels are arranged at intervals on the first piezoelectric plate, and there is an avoidance gap between every two adjacent first photovoltaic panels.

[0011] Furthermore, the first blade group also includes a support rod connected between the first photovoltaic panel and the first piezoelectric plate, the first end of the support rod is fixedly connected to the middle of the first photovoltaic panel, and the second end of the support rod is fixedly connected to the first piezoelectric plate.

[0012] Furthermore, the power generation device also includes a third blade group, which is rotatably arranged on the mounting shaft, and the first blade group, the second blade group and the third blade group are spaced apart along the axial direction of the mounting shaft; and / or the second blade group includes a second blade substrate, a second piezoelectric plate and a second photovoltaic panel, the second blade substrate is rotatably arranged on the mounting shaft, the second piezoelectric plate is arranged on the second blade substrate, and the second photovoltaic panel is arranged on the side of the second piezoelectric plate away from the second blade substrate.

[0013] Furthermore, the axis of the tower column extends in a vertical direction, the mounting axis extends in a horizontal direction, and the first blade group and the second blade group are located on the same side of the tower column.

[0014] According to another aspect of the present invention, a control method for a power generation device is provided, which is used to control the above-mentioned power generation device, wherein the power generation device also includes a controller connected to the first blade group and the second blade group, and the first blade group is located on a side of the second blade group away from the tower column;

[0015] The control method of the power generation device includes the following steps: when the first actual wind speed at the first blade group is greater than the cut-off wind speed of the power generation device, the controller controls the first blade group to stop rotating, so that the wind passes through the first blade group and blows onto the second blade group; when the wind blows onto the second blade group, the second actual wind speed at the second blade group is less than the first actual wind speed, so that the second blade group rotates at the second actual wind speed to generate electricity through the generator.

[0016] According to the technical solution of the present invention, the power generation device includes: a tower, a mounting shaft, a first blade group, a second blade group and a generator. The mounting shaft is arranged on the tower, and the axis of the mounting shaft is arranged at an angle to the axis of the tower. The first blade group is rotatably arranged on the mounting shaft. The second blade group is rotatably arranged on the mounting shaft, and the first blade group and the second blade group are arranged at intervals along the axis direction of the mounting shaft. The first blade group and the second blade group are both connected to the input end of the generator. In this way, through the arrangement of the first blade group and the second blade group, the wind can pass through the first blade group and the second blade group to drive the first blade group and the second blade group to rotate. The rotation of the first blade group can drive the generator to generate electrical energy, and the rotation of the second blade group can also drive the generator to generate electrical energy, thereby increasing the power generation of the power generation device and improving the utilization efficiency of wind energy by the power generation device. Therefore, the technical solution of the present application effectively solves the problem of low utilization efficiency of wind energy by wind power generation equipment in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic perspective view of an embodiment of a power generation device according to the present invention is shown;

[0019] Figure 2 Shows Figure 1 A side view schematic diagram of a first blade group of a power generation device.

[0020] The above drawings include the following reference numerals:

[0021] 10. Tower column;

[0022] 20. Install the shaft;

[0023] 31. first blade substrate; 32. first piezoelectric plate; 33. first photovoltaic panel; 34. first frame; 35. second frame; 36. support rod;

[0024] 41. second blade substrate; 42. second piezoelectric plate; 43. second photovoltaic plate;

[0025] 50. The third blade group. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] In this embodiment, if Figure 1 and Figure 2 As shown, the power generation device includes: a tower column 10, a mounting shaft 20, a first blade group, a second blade group and a generator. The mounting shaft 20 is arranged on the tower column 10, and the axis of the mounting shaft 20 is arranged at an angle to the axis of the tower column 10. The first blade group is rotatably arranged on the mounting shaft 20. The second blade group is rotatably arranged on the mounting shaft 20, and the first blade group and the second blade group are arranged at intervals along the axis direction of the mounting shaft 20. The first blade group and the second blade group are both connected to the input end of the generator.

[0030] In this way, by setting the first blade group and the second blade group, the wind can pass through the first blade group and the second blade group to drive the first blade group and the second blade group to rotate. The rotation of the first blade group can drive the generator to generate electricity, and the rotation of the second blade group can also drive the generator to generate electricity, which increases the power generation of the power generation device and improves the efficiency of the power generation device in utilizing wind energy. Therefore, the technical solution of this embodiment effectively solves the problem of low efficiency of wind energy utilization in wind power generation equipment in related technologies.

[0031] In this embodiment, the arrangement of the first blade group and the second blade group increases the surface area of ​​the power generation device, thereby facilitating the use of wind energy.

[0032] like Figure 1 and Figure 2 As shown, the first blade group includes: a first blade substrate 31, a first piezoelectric plate 32 and a first photovoltaic panel 33. The first blade substrate 31 is rotatably arranged on the mounting shaft 20. The first piezoelectric plate 32 is arranged on the first blade substrate 31. The first photovoltaic panel 33 is arranged on the side of the first piezoelectric panel 32 away from the first blade substrate 31. The first piezoelectric plate 32 and the first photovoltaic panel 33 are added to the first blade substrate 31, so that the first blade group can convert wind energy while receiving wind energy and using wind pressure and light to convert electric energy. This design not only improves the utilization rate of wind energy by the first blade group, but also, under the condition of light, the first photovoltaic panel 33 can independently generate electric energy, which increases the diversity of power generation, so that the power generation device can maintain a high power generation efficiency under different weather conditions. Under the condition of insufficient wind but sufficient light, the first photovoltaic panel 33 can supplement the power output, thereby improving the stability and reliability of the entire power generation device. And when the wind blows on the first blade group, the first piezoelectric panel 32 is blown and deformed, thereby generating a potential difference on both sides of the first piezoelectric panel 32 to generate electric energy.

[0033] In this embodiment, the wave nature of the wind produces a reciprocating extrusion of a certain variable frequency on the surface of the first piezoelectric plate 32 . This wave extrusion of the wind is also an effective power energy, which generates electrical energy through the deformation of the first piezoelectric plate 32 .

[0034] like Figure 1 and Figure 2As shown, the first blade group also includes a support frame connected between the first blade substrate 31 and the first piezoelectric plate 32. The support frame includes a first frame body 34 connected to the first end of the first piezoelectric plate 32 and a second frame body 35 connected to the second end of the first piezoelectric plate 32, and the first end of the first piezoelectric plate 32 is arranged opposite to the second end of the first piezoelectric plate 32. By arranging the support frame between the first blade substrate 31 and the first piezoelectric plate 32, not only the structural stability of the blade group is enhanced, but also the arrangement of the support frame enables the first piezoelectric plate 32 to be flexibly deformed under the action of wind pressure, thereby improving the efficiency of the piezoelectric effect and the electric energy generated by the first piezoelectric plate 32. When the wind force changes, the first blade group can more effectively capture wind energy and convert it into electric energy. Arranging the first frame body 34 and the second frame body 35 at both ends of the first piezoelectric plate 32 can further facilitate the deformation of the first piezoelectric plate 32, thereby increasing the power generation.

[0035] like Figure 1 and Figure 2 As shown, the first frame 34 is a deformable frame, and the deformable frame has a deformed state in which deformation occurs and a restored state in which the deformation occurs. The first piezoelectric plate 32 is a deformable plate, and when the deformable plate is deformed, the deformable frame is in a deformed state. When the deformable plate is not deformed, the deformable frame is in a restored state. The combination of the deformable frame and the deformable plate enables the first piezoelectric plate 32 to be dynamically deformed under the action of wind force, and then automatically adjusts its charge separation effect according to the wind force, thereby improving the energy conversion efficiency of the piezoelectric plate. The setting of the deformable frame facilitates increasing the deformation amount of the deformable plate, thereby increasing the power generation. When the wind force weakens, the deformable frame returns to its original state, reducing the loss of wind pressure and ensuring the overall stability of the blade group.

[0036] In this embodiment, the second frame 35 has the same structure as the first frame 34 , and the first blade group has the same structure as the second blade group. The first blade group includes a plurality of blades spaced apart along the circumferential direction of the mounting shaft 20 .

[0037] like Figure 1 and Figure 2 As shown, the first frame 34 is hinged to the first end of the first piezoelectric plate 32. The second frame 35 is hinged to the second end of the first piezoelectric plate 32. By adopting a hinge design between the first frame 34 and the first end of the first piezoelectric plate 32 and the second frame 35 and the second end of the first piezoelectric plate 32, the first piezoelectric plate 32 can adjust its posture more flexibly when the wind force changes, thereby increasing the deformation of the first piezoelectric plate 32 and thus increasing the power generation.

[0038] In other embodiments, the first frame 34 is hinged to the first end of the first piezoelectric plate 32 . Alternatively, the second frame 35 is hinged to the second end of the first piezoelectric plate 32 .

[0039] like Figure 1 and Figure 2 As shown, there are multiple first photovoltaic panels 33, and multiple first photovoltaic panels 33 are arranged on the first piezoelectric plate 32 at intervals, and there is an avoidance gap between every two adjacent first photovoltaic panels 33. The first photovoltaic panels 33 are designed to be multiple and arranged at intervals, thereby avoiding the shielding between adjacent photovoltaic panels, ensuring that each photovoltaic panel can fully receive light, and improving the utilization efficiency of light energy. The design of the avoidance gap can reduce the possibility of interference between two adjacent first photovoltaic panels 33 when the first piezoelectric plate 32 is deformed, and reduce the possibility of the first photovoltaic panel 33 being blocked at this time.

[0040] like Figure 1 and Figure 2 As shown, the first blade group also includes a support rod 36 connected between the first photovoltaic panel 33 and the first piezoelectric plate 32, the first end of the support rod 36 is fixedly connected to the middle of the first photovoltaic panel 33, and the second end of the support rod 36 is fixedly connected to the first piezoelectric plate 32. By arranging the support rod 36 between the first photovoltaic panel 33 and the first piezoelectric plate 32, not only the structural connection between the two is enhanced, but also the arrangement of the support rod 36 helps to optimize the deformation degree of the first piezoelectric plate 32, thereby improving the charge separation ability of the first piezoelectric plate 32 while ensuring the stability of the first photovoltaic panel 33 and the efficient working state of the first piezoelectric plate 32. This design can also improve the responsiveness and efficiency of the first blade group as a whole when facing wind force.

[0041] In this way, when the wind blows to the first blade group, the wind can blow on the first photovoltaic panel 33, so that the first photovoltaic panel 33 is subjected to force and transmitted to the first piezoelectric plate 32. The first piezoelectric plate 32 is deformed by the wind force and the force applied by the first photovoltaic panel 33, thereby generating more electrical energy.

[0042] like Figure 1 and Figure 2As shown, the power generation device also includes a third blade group 50, which is rotatably arranged on the mounting shaft 20. The first blade group, the second blade group and the third blade group 50 are arranged at intervals along the axial direction of the mounting shaft 20. The third blade group 50 is added to the power generation device, and is arranged at intervals with the first blade group and the second blade group along the axial direction of the mounting shaft 20, forming a composite blade system. The coordinated work of multiple blade groups not only increases the power generation area, thereby increasing the power generation, but also the configuration of different blade groups enables the power generation device to respond to wind speed changes more flexibly, thereby improving the overall power generation stability and the utilization efficiency of wind energy. The second blade group includes a second blade substrate 41, a second piezoelectric plate 42 and a second photovoltaic panel 43. The second blade substrate 41 is rotatably arranged on the mounting shaft 20, the second piezoelectric plate 42 is arranged on the second blade substrate 41, and the second photovoltaic panel 43 is arranged on the side of the second piezoelectric plate 42 away from the second blade substrate 41. A second piezoelectric plate 42 and a second photovoltaic panel 43 are added to the second blade substrate 41, so that the second blade group can convert wind pressure and light into electric energy while receiving wind energy. This design not only improves the utilization rate of wind energy by the second blade group, but also the second photovoltaic panel 43 can independently generate electric energy under light conditions, which increases the diversity of power generation and enables the power generation device to maintain a high power generation efficiency under different weather conditions. Under conditions where wind power is insufficient but light is sufficient, the second photovoltaic panel 43 can supplement the power output, thereby improving the stability and reliability of the entire power generation device. And when the wind blows on the second blade group, the second piezoelectric plate 42 is deformed, thereby generating a potential difference on both sides of the second piezoelectric plate 42 to generate electric energy.

[0043] In other embodiments, the power generation device further includes a third blade group 50, which is rotatably disposed on the mounting shaft 20. The first blade group, the second blade group, and the third blade group 50 are spaced apart along the axial direction of the mounting shaft 20. Alternatively, the second blade group includes a second blade substrate 41, a second piezoelectric plate 42, and a second photovoltaic panel 43. The second blade substrate 41 is rotatably disposed on the mounting shaft 20, the second piezoelectric plate 42 is disposed on the second blade substrate 41, and the second photovoltaic panel 43 is disposed on the side of the second piezoelectric plate 42 away from the second blade substrate 41.

[0044] like Figure 1 and Figure 2As shown, the axis of the tower 10 extends in the vertical direction, the mounting shaft 20 extends in the horizontal direction, and the first blade group and the second blade group are located on the same side of the tower 10. This layout optimizes the distribution of wind force, so that the wind force can first act on the first blade group and then smoothly transfer to the second blade group. In addition, the first blade group and the second blade group are located on the same side of the tower 10. Due to the weight of the first blade group and the second blade group and the mounting shaft 20 on one side of the tower 10, the power generation device can have a forward tilt torque. When the wind force is large, the forward tilt torque can offset the wind force, thereby reducing the force on the power generation device and improving the power generation device's ability to resist typhoon overturning.

[0045] In this embodiment, the installation shaft 20 is rotatably disposed on the tower column 10, and the installation shaft 20 rotates on the horizontal plane according to the direction of the wind force, so that the forward tilt torque can offset the wind force, thereby improving the installation reliability of the power generation device.

[0046] The present application also provides a control method for a power generation device, and the control method for the power generation device is used to control the above-mentioned power generation device. The power generation device also includes a controller that is control-connected to the first blade group and the second blade group, and the first blade group is located on the side of the second blade group away from the tower 10. The control method for the power generation device includes the following steps: when the first actual wind speed at the first blade group is greater than the cut-off wind speed of the power generation device, the controller controls the first blade group to stop rotating, so that the wind passes through the first blade group and blows onto the second blade group; when the wind blows onto the second blade group, the second actual wind speed at the second blade group is less than the first actual wind speed, so that the second blade group rotates at the second actual wind speed to generate electricity through the generator.

[0047] Under high wind speed conditions, the controller can stop the first blade group from rotating in a timely manner, and direct the wind to the second blade group. When the wind passes through the stopped first blade group, it is blocked by the first blade group and decelerated. This allows the second blade group to work at a lower wind speed, thereby improving the power generation efficiency of the generator and the overall performance of the power generation device. Through the control connection between the controller and the first blade group and the second blade group, the power generation device can monitor the wind speed changes in real time and adjust the working state of the blade group according to the actual wind speed. When the wind speed exceeds the safe operating range, the controller can control the first blade group to stop rotating in time, avoiding damage to the first blade group and the second blade group caused by excessive wind force, and improving the operating safety and reliability of the power generation device. At the same time, the intelligent control strategy can optimize the use of wind force by adjusting the rotation state of the first blade group and the second blade group under different wind speed conditions, thereby ensuring that the power generation device can maintain a high power generation efficiency and power output stability under various weather conditions.

[0048] In this embodiment, when the second actual wind speed is greater than the cut-off wind speed of the power generation device, the controller controls the second blade group to stop rotating, so that the wind passes through the first blade group and the second blade group and blows onto the third blade group 50; when the wind blows onto the third blade group 50, the third actual wind speed at the third blade group 50 is less than the second actual wind speed, so that the third blade group 50 rotates at the third actual wind speed to generate electricity through the generator.

[0049] Since the above-mentioned power generation device can solve the problem of low wind energy utilization efficiency of wind power generation equipment in the related art, the control method for controlling the above-mentioned power generation device can solve the same technical problem. In summary, the technical solution in this embodiment not only improves the utilization efficiency of wind energy by the power generation device through the innovative design of integrated photovoltaic, piezoelectric and blade structure, but also optimizes the operating state of the power generation device through intelligent control strategy, and enhances the wind resistance and power generation stability of the equipment.

[0050] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power generation device, characterized in that: include: Tower column (10); A mounting shaft (20) is arranged on the tower column (10), wherein the axis of the mounting shaft (20) is arranged at an angle to the axis of the tower column (10); A first blade group is rotatably arranged on the mounting shaft (20); A second blade group is rotatably arranged on the mounting shaft (20), the first blade group and the second blade group being arranged at intervals along the axial direction of the mounting shaft (20); A generator, wherein the first blade group and the second blade group are both connected to an input end of the generator.

2. The power generation device according to claim 1, characterized in that: The first blade group comprises: A first blade base plate (31) rotatably arranged on the mounting shaft (20); A first piezoelectric plate (32) is arranged on the first blade substrate (31); A first photovoltaic panel (33) is arranged on a side of the first piezoelectric panel (32) facing away from the first blade substrate (31).

3. The power generation device according to claim 2, characterized in that: The first blade group also includes a support frame connected between the first blade substrate (31) and the first piezoelectric plate (32), the support frame including a first frame body (34) connected to the first end of the first piezoelectric plate (32) and a second frame body (35) connected to the second end of the first piezoelectric plate (32), the first end of the first piezoelectric plate (32) and the second end of the first piezoelectric plate (32) being arranged opposite to each other.

4. The power generation device according to claim 3, characterized in that: The first frame body (34) is a deformable frame, and the deformable frame has a deformed state in which deformation occurs and a restored state in which the deformation occurs; the first piezoelectric plate (32) is a deformable plate, and when the deformable plate is deformed, the deformable frame is in the deformed state; when the deformable plate is not deformed, the deformable frame is in the restored state.

5. The power generation device according to claim 4, characterized in that: The first frame (34) and the first end of the first piezoelectric plate (32) are hinged, and / or the second frame (35) and the second end of the first piezoelectric plate (32) are hinged.

6. The power generation device according to claim 2, characterized in that: There are a plurality of the first photovoltaic panels (33), and the plurality of the first photovoltaic panels (33) are arranged at intervals on the first piezoelectric plate (32), and there is an avoidance gap between every two adjacent first photovoltaic panels (33).

7. The power generation device according to claim 6, characterized in that: The first blade group also includes a support rod (36) connected between the first photovoltaic panel (33) and the first piezoelectric plate (32), wherein the first end of the support rod (36) is fixedly connected to the middle of the first photovoltaic panel (33), and the second end of the support rod (36) is fixedly connected to the first piezoelectric plate (32).

8. The power generation device according to claim 1, characterized in that: The power generation device further comprises a third blade group (50), wherein the third blade group (50) is rotatably arranged on the mounting shaft (20), and the first blade group, the second blade group and the third blade group (50) are arranged at intervals along the axial direction of the mounting shaft (20); and / or, The second blade group includes a second blade substrate (41), a second piezoelectric plate (42) and a second photovoltaic panel (43); the second blade substrate (41) is rotatably arranged on the mounting shaft (20); the second piezoelectric plate (42) is arranged on the second blade substrate (41); and the second photovoltaic panel (43) is arranged on a side of the second piezoelectric plate (42) facing away from the second blade substrate (41).

9. The power generation device according to claim 1, characterized in that: The axis of the tower column (10) extends in a vertical direction, the installation shaft (20) extends in a horizontal direction, and the first blade group and the second blade group are located on the same side of the tower column (10).

10. A method for controlling a power generation device, characterized in that: Used to control the power generation device according to any one of claims 1 to 9, the power generation device further comprising a controller connected to the first blade group and the second blade group, the first blade group being located on a side of the second blade group away from the tower (10); The control method of the power generation device comprises the following steps: When the first actual wind speed at the first blade group is greater than the cut-off wind speed of the power generation device, the controller controls the first blade group to stop rotating, so that the wind passes through the first blade group and blows onto the second blade group; When wind blows onto the second blade assembly, a second actual wind speed at the second blade assembly is less than the first actual wind speed, so that the second blade assembly rotates at the second actual wind speed to generate electricity through the generator.

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