Wind generating set and control method thereof

Abstract

The invention discloses a wind generating set and a control method thereof, and relates to the technical field of wind power generation, the wind generating set comprises a tower drum, a cabin, a control assembly, a hub and a plurality of blades, a yaw device is arranged at the top of the tower drum and connected with the cabin, a power generation device is arranged in the cabin, and the control assembly is connected with the hub. The control assembly comprises a control part, a wind direction and wind speed measuring instrument and a light intensity measuring instrument, the wind direction and wind speed measuring instrument and the light intensity measuring instrument are both in signal connection with the control part, the control part is in signal connection with the yaw device so that the yaw device can drive the cabin to rotate around the center axis of the tower barrel, and the hub is in transmission connection with an input shaft of the power generation device. The multiple blades are connected with the hub and are circumferentially arranged around the center of the hub, and a solar cell is arranged on the side, away from the tower drum, of each blade. The wind direction and wind speed measuring instrument, the light intensity measuring instrument and the control part are matched with one another to ensure that the wind generating set can have high generating efficiency in any environment.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power generator set and a control method thereof. Background Art

[0002] With the continuous development of new energy, wind energy has been favored. Since wind energy is an inexhaustible clean and renewable energy in nature, according to the characteristics of wind energy, certain development has been achieved in the field of wind power generation.

[0003] However, currently wind power generation equipment can only generate electricity in windy weather, but cannot generate electricity in many windless weathers. This affects the utilization rate of wind turbines, resulting in lower efficiency of wind turbines.

[0004] Therefore, it is necessary to provide a new wind turbine generator set and a control method thereof to solve the above technical problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a wind turbine generator set and a control method thereof, aiming to improve the technical problem of low power generation efficiency of wind turbine generators in the prior art.

[0006] To achieve the above object, according to one aspect of the present invention, the present invention provides a wind turbine generator set, comprising:

[0007] A tower, wherein a yaw device is provided on the top of the tower;

[0008] A nacelle, the yaw device is connected to the nacelle, and a power generation device is arranged in the nacelle;

[0009] A control component, the control component comprising a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument, the wind direction and speed measuring instrument and the light intensity measuring instrument are both connected to the control component by signal, and the control component is connected to the yaw device by signal, so that the yaw device drives the nacelle to rotate around the central axis of the tower;

[0010] A wheel hub, the wheel hub being drivingly connected to an input shaft of the generator;

[0011] A plurality of blades are connected to the hub and are arranged in a circle around the center of the hub. A solar cell is arranged on a side of each blade facing away from the tower.

[0012] In one embodiment, the solar cell is a flexible thin-film solar cell panel.

[0013] In one embodiment, a groove is provided on the blade, and the wind turbine generator set further includes a cleaning device, a fixing device is provided in the groove, the solar cell is installed in the groove, and the solar cell is connected to the fixing device, the cleaning device is slidably installed on the fixing device, and the cleaning device is in contact with a side of the solar cell facing away from the blade.

[0014] In one embodiment, the fixing device includes a motor, a screw drivingly connected to the output shaft of the motor, and a sliding member threadedly connected to the screw, and the cleaning device includes a cleaning rod and a fixing bracket connected to each other, the fixing bracket is connected to the sliding member, and the cleaning rod is in contact with the side of the solar cell facing away from the blade.

[0015] In one embodiment, the depth of the groove is equal to the thickness of the solar cell, and the outer surface of the blade is flush with the outer surface of the solar cell.

[0016] In one embodiment, the number of the fixing devices in each of the grooves is two, the two fixing devices are arranged at an interval, and two ends of the solar cell are respectively connected to the two fixing devices.

[0017] In one embodiment, the number of the fixing brackets is two, and the two fixing brackets are respectively arranged on both sides of the cleaning rod, and the two fixing brackets are respectively connected to the sliding members on the two fixing devices.

[0018] In one embodiment, the number of the grooves on each of the blades is multiple, the number of the solar cells is multiple, the number of the grooves is equal to the number of the solar cells, and they are arranged in a one-to-one correspondence.

[0019] In one embodiment, the control component is connected to the motor signal.

[0020] According to another aspect of the present invention, the present invention further provides a control method for a wind turbine generator set, the control method for a wind turbine generator set is applied to the above-mentioned wind turbine generator set, and the control method for a wind turbine generator set comprises the following steps:

[0021] Control the wind direction and wind speed measuring instrument to detect the current wind force and wind direction signal and transmit the detection data to the control component, and control the light intensity measuring instrument to detect the current light intensity and light direction signal and transmit the detection data to the control component;

[0022] The control component calculates the wind power generation power according to the wind force, the control component calculates the solar power generation power according to the light intensity, and the control component compares the wind power generation power and the solar power generation power;

[0023] When the wind power generation power is greater than the solar power generation power, the yaw device drives the nacelle to rotate around the central axis of the tower so that the blades face the wind; when the wind power generation power is less than the solar power generation power, the yaw device drives the nacelle to rotate around the central axis of the tower so that the blades face the light.

[0024] In the above scheme, the wind turbine generator set includes a tower, a nacelle, a control component, a hub and a plurality of blades. A yaw device is arranged on the top of the tower, and the yaw device is connected to the nacelle. A power generation device is arranged in the nacelle. The control component includes a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument. Both the wind direction and speed measuring instrument and the light intensity measuring instrument are connected to the control component signal. The control component is connected to the yaw device signal so that the yaw device drives the nacelle to rotate around the central axis of the tower. The hub is drivingly connected to the input shaft of the power generation device. Multiple blades are connected to the hub, and the multiple blades are arranged in a circle around the center of the hub. A solar cell is arranged on the side of each blade facing away from the tower. Specifically, the tower is fixed in a position suitable for wind power generation and solar power generation, a yaw device is provided at the top of the tower, and then the cabin is fixed to the yaw device at the top of the tower, a wind power generation device is provided in the cabin, the hub is connected to the input shaft of the power generation device by driving, a plurality of blades are connected to the hub, and the plurality of blades are arranged in a circle around the center of the hub, a solar cell is provided on the side of each blade away from the tower, and then the wind turbine generator set is provided with a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument, and the wind direction and speed measuring instrument detects the wind intensity and wind speed in real time. The light intensity meter detects the light intensity and direction, and then the wind direction and speed meter and the light intensity meter transmit the detected signals to the control component. The control component selects the appropriate power generation method according to the data simulation calculation, and connects the power generated by the solar cell and the power generated by the wind-driven power generation device in parallel to the power grid for power supply; when the wind conditions in the current environment are good, the wind direction and speed meter monitors the wind conditions, and controls the yaw device to start, driving the cabin to rotate around the central axis of the tower, so that the blades face the wind, and the wind will blow the blades to make the hub rotate, thereby making the generator The input shaft of the electrical device rotates to realize wind power generation, and the control component integrates the power of wind power generation into the power grid to realize power supply; when the current wind power is insufficient and the sunshine is sufficient, the light intensity meter monitors the light intensity, and controls the yaw device to start, driving the cabin to rotate around the central axis of the tower, so that the solar cells on the blades face the sunshine, so that the solar cells can generate electricity more effectively and achieve the maximum power generation efficiency, and the control component integrates the electricity generated by the solar cells into the power grid to realize power supply; when the current wind power is sufficient and the sunshine is sufficient, the two power generation conditions are met, the wind direction and speed meter and the light intensity meter will collect the wind power and sunshine intensity at the same time, and predict and calculate the wind turbine power and the solar power generation power through the internal algorithm of the control component, and compare them, and automatically select the higher one of the wind power generation and the solar power generation power as the power generation mode, that is, when the wind power generation power is higher than the solar power generation power, the wind power generation mode is selected, and when the wind power generation power is less than the solar power generation power, the solar power generation mode is selected, so that no matter what the environment is, the higher power generation mode can be automatically selected for power generation.In the present invention, solar cells are arranged on the blades of the wind turbine to realize solar power generation on sunny days, and a wind direction and speed measuring instrument, a light intensity measuring instrument and a control component cooperate with each other to select a power generation method with higher power generation efficiency in the current environment to automatically select power generation, thereby ensuring higher power generation efficiency in any environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the overall structure of an embodiment of a wind turbine generator set provided by the present invention;

[0027] Figure 2 A schematic diagram of the overall structure of a wind turbine generator set according to another embodiment of the present invention from another perspective;

[0028] Figure 3 A schematic diagram of the installation of a solar cell according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the connection between a fixing device and a cleaning device according to an embodiment of the present invention;

[0030] Figure 5 FIG. 1 is a flow chart of a control method for a wind turbine generator set according to a first embodiment of the present invention.

[0031] Description of Figure Numbers:

[0032] 100. Wind turbine generator set; 1. Tower; 2. Yaw device; 3. Nacelle; 4. Hub; 5. Blade; 6. Solar cell; 51. Groove; 7. Cleaning device; 511. Fixing device; 511a. Motor; 511b. Screw; 71. Cleaning rod; 72. Fixing bracket.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] 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, not all of the embodiments. 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.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Wind power generation equipment can only generate electricity in windy weather, but cannot generate electricity in many windless weathers, which affects the utilization rate of wind power generation equipment. Solar power generation equipment can only generate electricity in clear daytime, but cannot generate electricity at night. Organically combining solar power generation with wind power generation, and giving full play to their respective advantages, can effectively improve the utilization rate and power generation of power generation equipment. Although there are currently plans to combine the two to achieve complementary power generation of wind and solar energy, some existing wind-solar complementary power generation devices, although they can also simply achieve certain complementary power generation, in the wind power generation part, the fan blades are difficult to adjust according to different wind speeds, and it is difficult to ensure that they are facing the wind direction in real time; in the solar power generation part, the solar panels cannot ensure the effective absorption of solar energy in real time, and the power generation efficiency is not very high. Through research, the applicant has designed a wind turbine generator set that can significantly improve the power generation efficiency.

[0038] According to one aspect of the present invention, see Figure 1 and Figure 2The present invention proposes a wind turbine generator set 100, including a tower 1, a nacelle 3, a control component, a hub 4 and a plurality of blades 5. A yaw device 2 is arranged on the top of the tower 1, the yaw device 2 is connected to the nacelle 3, a power generation device is arranged in the nacelle 3, the control component includes a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument, the wind direction and speed measuring instrument and the light intensity measuring instrument are both connected to the control component by signal, the control component is connected to the yaw device 2 by signal, so that the yaw device 2 drives the nacelle 3 to rotate around the central axis of the tower 1, the hub 4 is drivingly connected to the input shaft of the power generation device, the plurality of blades 5 are all connected to the hub 4, and the plurality of blades 5 are arranged in a circle around the center of the hub 4, and a solar cell 6 is arranged on the side of each blade 5 away from the tower 1.Specifically, the tower 1 is fixed at a position suitable for wind power generation and solar power generation, a yaw device 2 is arranged at the top of the tower 1, and then the nacelle 3 is fixed on the yaw device 2 at the top of the tower 1, a wind power generation device utilizing wind power is arranged in the nacelle 3, the hub 4 is drivingly connected to the input shaft of the power generation device, a plurality of blades 5 are connected to the hub 4, and the plurality of blades 5 are arranged in a circle around the center of the hub 4, and a solar cell 6 is arranged on the side of each blade 5 away from the tower 1, and then the wind turbine generator set 100 is provided with a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument, and the wind direction and speed measuring instrument The wind direction and wind direction measuring instrument detects wind intensity and wind direction in real time, and the light intensity measuring instrument detects light intensity and light direction. Then the wind direction and wind speed measuring instrument and the light intensity measuring instrument transmit the detected signals to the control component. The control component selects the appropriate power generation method according to the data simulation calculation, and connects the power generated by the solar cell 6 and the power generated by the wind-driven power generation device in parallel to the power grid for power supply. When the wind conditions in the current environment are good, the wind direction and wind speed measuring instrument monitors the wind conditions, and controls the yaw device 2 to start, driving the nacelle 3 to rotate around the central axis of the tower 1, so that the blades 5 face the wind, and the wind will blow the blades 5 to make the hub 4 rotates, thereby causing the input shaft of the generator to rotate, realizing wind power generation, and the control component integrates the power of wind power generation into the power grid to realize power supply; when the current wind power is insufficient and the sunshine is sufficient, the light intensity meter monitors the light intensity, and controls the yaw device 2 to start, driving the nacelle 3 to rotate around the central axis of the tower 1, so that the solar cell 6 on the blade 5 faces the sunshine, so that the solar cell 6 can generate electricity more effectively, achieving the maximum power generation efficiency, and the control component integrates the power generated by the solar cell 6 into the power grid to realize power supply; when the current wind power is sufficient and the sunshine is sufficient, the two power generation conditions are met, the wind direction and wind speed meter and the light intensity meter will collect the wind power and sunshine intensity at the same time, and predict and calculate the wind turbine power and the solar power generation power through the internal algorithm of the control component, and compare them, and automatically select the higher one of the wind power generation power and the solar power generation power as the power generation mode, that is, when the wind power generation power is higher than the solar power generation power, the wind power generation mode is selected, and when the wind power generation power is lower than the solar power generation power, the solar power generation mode is selected, so that no matter what the environment is, the mode with higher power generation power can be automatically selected for power generation. In this embodiment, solar cells 6 are provided on the blades 5 of the wind turbine to realize solar power generation on sunny days, and a wind direction and speed measuring instrument, a light intensity measuring instrument and a control component cooperate with each other to select a power generation method with higher power generation efficiency according to the current environment, thereby ensuring higher power generation efficiency in any environment.

[0039] Furthermore, the yaw device 2 includes a yaw bearing, a yaw drive, a yaw brake / clamp and a yaw control system, wherein the yaw bearing is located between the top of the tower 1 and the bottom of the nacelle 3, allowing the nacelle 3 to rotate freely relative to the tower 1. The yaw drive is usually composed of an electric motor, a reducer and a pinion gear, and is used to provide rotational power to rotate the nacelle 3 to a desired position. The yaw brake / clamp is used to fix the position of the nacelle 3 to prevent unplanned rotation, and to assist in controlling the rotation speed of the nacelle 3 when necessary. The yaw control system automatically calculates and decides when and how to adjust the direction of the nacelle 3 based on the data of wind direction and speed measured by the control component. Modern wind turbines are usually equipped with advanced control systems that can monitor wind direction changes in real time and respond quickly.

[0040] In one embodiment, the solar cell 6 is a flexible thin-film solar cell 6 panel. The flexible thin-film solar cell 6 panel is flatly pasted on the windward surface of the blade 5. In order to maximize the utilization rate of the flexible thin-film solar cell 6 and make full use of the windward surface space of the blade 5, the rectangular flexible thin-film solar cell 6 is arranged in an array on the windward surface of the blade 5. The flexible thin-film solar cell 6 has good flexibility and can be attached to surfaces of different shapes and curvatures. This is particularly important for installation on wind turbine blades 5, because the blades 5 usually have a certain curvature and a complex shape. Flexible materials can better adapt to these shapes, thereby increasing the flexibility and efficiency of installation. Compared with traditional silicon-based solar cells 6, flexible thin-film solar cells 6 are usually lighter. This helps to reduce the requirements for the structural strength of the wind turbine blade 5, and will not significantly affect the rotation performance of the blade 5, which helps to maintain or even improve the overall power generation efficiency. Flexible thin-film solar cells 6 can also show good energy conversion efficiency under weak light conditions. This means that even when the lighting conditions are not optimal, they can still effectively convert solar energy into electrical energy and improve the energy collection capacity around the clock. The manufacturing process of flexible thin-film solar cells 6 may be simpler than that of traditional solar cells 6, which may bring cost advantages. In addition, due to its lightweight characteristics, it may also reduce the cost of transportation and installation. Flexible film technology has good weather resistance and can maintain stable performance under extreme weather conditions.

[0041] In one embodiment, a groove 51 is provided on the blade 5, and the wind turbine generator set 100 further includes a cleaning device 7, a fixing device 511 is provided in the groove 51, a solar cell 6 is installed in the groove 51, and the solar cell 6 is connected to the fixing device 511, and the cleaning device 7 is slidably installed in the fixing device 511, and the cleaning device 7 is in contact with the side of the solar cell 6 away from the blade 5. Specifically, by installing the solar cell 6 in the groove 51 on the blade 5, these cells can be effectively protected from direct damage from the external environment, such as physical damage that may be caused by flying stones, wind and sand, etc. In addition, this design can also reduce the impact of severe weather conditions on the solar cell 6. Since the solar cell 6 needs to be kept clean to maintain efficient energy conversion, a cleaning device 7 is provided in this embodiment, and the cleaning device 7 is in contact with the side of the solar cell 6 that contacts the outside world. The cleaning device 7 slides along the fixing device 511, and can automatically slide to clean the solar cell 6, thereby ensuring the best working state of the solar cell 6. Using the fixing device 511 to install the solar cell 6 not only provides a stable support, but also allows the position of the solar cell 6 to be adjusted more accurately to ensure that they can capture sunlight to the maximum extent. Additionally, this structure enhances the mechanical stability of the entire system, helping to resist vibrations and other stresses at high wind speeds.

[0042] See also Figure 1 , Figure 3 and Figure 4 In one embodiment, the fixing device 511 includes a motor 511a, a screw rod 511b connected to the output shaft of the motor 511a, and a sliding member threadedly connected to the screw rod 511b. The cleaning device 7 includes a cleaning rod 71 and a fixing bracket 72 connected to each other. The fixing bracket 72 is connected to the sliding member. The cleaning rod 71 is in contact with the side of the solar cell 6 away from the blade 5. When the solar cell 6 needs to be cleaned, the motor 511a is started, and the screw rod 511b connected to the output shaft of the motor 511a will also rotate with the output shaft of the motor 511a, and the sliding member threadedly connected to the screw rod 511b will move on the screw rod 511b, and the fixing bracket 72 is connected to the sliding member. In this way, the fixing bracket 72 and the cleaning plate will move along the length direction of the screw rod 511b with the sliding member, and the cleaning plate will be in contact with the side of the solar cell 6 that contacts the outside world. In this way, the cleaning rod 71 will clean the solar cell 6 during the movement, so that fully automatic cleaning can be achieved.

[0043] In one embodiment, the depth of the groove 51 is equal to the thickness of the solar cell 6, and the outer surface of the blade 5 is flush with the outer surface of the solar cell 6. When the solar cell 6 is flush with the surface of the blade 5, the impact on the original aerodynamic design of the blade 5 can be minimized. This means that during the rotation process, the blade 5 can cut the wind flow more smoothly, reduce additional air resistance, and thus improve the efficiency of wind power generation. Embedding the solar cell 6 into the groove 51 of the blade 5 and ensuring that its outer surface is flush with the surface of the blade 5 helps to maintain or even optimize the aerodynamic characteristics of the blade 5, reduce unnecessary air resistance, and thus do not affect or even improve the efficiency of wind power generation.

[0044] See also Figure 3 and Figure 4 In one embodiment, the number of fixing devices 511 in each groove 51 is two, and the two fixing devices 511 are arranged at intervals, and the two ends of the solar cell 6 are connected to the two fixing devices 511 respectively. By using independent fixing devices 511 at both ends of the solar cell 6 for fixing, a more stable support structure can be provided, reducing the shaking or displacement caused by the external environment, and ensuring that the solar cell 6 can be stably installed on the blade 5. When the solar cell 6 is subjected to external forces, the fixing devices 511 at both ends can help to evenly distribute these stresses, avoid damage caused by excessive local force, and extend the service life of the solar cell 6. Using two fixing devices 511 arranged at intervals, the position and angle of the solar cell 6 can be more accurately adjusted during the installation process to ensure that it can receive sunlight at the optimal angle, thereby maximizing the energy collection efficiency. If the solar cell 6 needs to be inspected, cleaned or replaced, this two-end fixing mode makes the operation more convenient. The solar cell 6 can be easily removed by simply releasing the fixing devices 511 at both ends, reducing the difficulty and time cost of maintenance. By properly arranging the position of the fixing device 511, the solar cell 6 can be effectively fixed and supported without increasing the additional space requirement, while keeping the shape of the blade 5 smooth and not affecting its aerodynamic performance.

[0045] See also Figure 3 and Figure 4In one embodiment, there are two fixed brackets 72, which are respectively arranged on both sides of the cleaning rod 71, and are respectively connected to the sliding members on the two fixing devices 511. The two ends of the cleaning rod 71 are fixed by the two fixed brackets 72, so that the cleaning rod 71 is in a horizontal state, and the two fixed brackets 72 are respectively connected to the sliding members on the two fixing devices 511, so that when cleaning is required, the motors 511a in the two fixing devices 511 are started at the same time, so that the two sliding members will move synchronously in the same direction, and the two fixed brackets 72 will move synchronously, so that the moving speed and direction of both sides of the cleaning rod 71 are synchronized, and the cleaning rod 71 is in a horizontal state to ensure the cleaning efficiency of the cleaning rod 71.

[0046] See also Figure 1 In one embodiment, the number of grooves 51 on each blade 5 is multiple, and the number of solar cells 6 is multiple, and the number of grooves 51 is equal to the number of solar cells 6, and they are arranged one by one. By arranging multiple grooves 51 on each blade 5 and installing multiple solar cells 6, the total solar energy collection area can be significantly increased, thereby improving the overall energy collection efficiency. This method makes it possible to fully utilize sunlight resources even on a limited surface of the blade 5. According to the specific shape and size of the blade 5, the position and number of the grooves 51 can be flexibly adjusted to achieve the best energy absorption effect. If a single solar cell 6 fails or is damaged, it will not affect the operation of other cells because they are independently installed in their respective grooves 51. This reduces the failure risk of the entire system and improves the reliability and stability of the system. Since each solar cell 6 is installed independently, it is more convenient when cleaning, maintenance or replacement is required. It is only necessary to operate on a specific groove 51 and solar cell 6 without interfering with the operation of other components. The number and configuration of solar cells 6 on each blade 5 can be flexibly adjusted according to different environmental conditions and energy requirements to meet the needs of specific application scenarios.

[0047] In one embodiment, the control component is connected to the motor 511a by signal. The pollution index of the solar cell 6 is calculated according to the light intensity data detected by the light intensity measuring instrument. When the pollution index exceeds a preset threshold, the motor 511a is controlled to start and clean the surface of the solar cell 6, so that automatic cleaning can be achieved.

[0048] According to another aspect of the present invention, the present invention further provides a control method for a wind turbine generator set 100. The control method for the wind turbine generator set 100 is applied to the above-mentioned wind turbine generator set 100. Figure 5 , Figure 5 FIG. 1 is a flow chart of a control method of a wind turbine generator set 100 according to a first embodiment of the present invention. The control method of the wind turbine generator set 100 includes the following steps:

[0049] S1, control the wind direction and wind speed measuring instrument to detect the current wind force and wind direction signal and transmit the detection data to the control component, control the light intensity measuring instrument to detect the current light intensity and light direction signal and transmit the detection data to the control component;

[0050] The wind direction and speed measuring instrument detects the current wind force and the current wind direction in real time, and the light intensity measuring instrument detects the current light intensity and light direction in real time. Both the wind direction and speed measuring instrument and the light intensity measuring instrument transmit the detected signals to the control component.

[0051] S2, the control component calculates the wind power generation power according to the wind force, the control component calculates the solar power generation power according to the light intensity, and the control component compares the wind power generation power and the solar power generation power;

[0052] The control component receives a wind force signal and a light intensity signal, and calculates the wind power generation power under the current wind force and the solar power generation power under the current light intensity respectively through a simulated wind power generation power algorithm and a simulated solar power generation power algorithm preset inside the control component, and then compares the calculated wind power generation power and solar power generation power.

[0053] S3. When the wind power generation power is greater than the solar power generation power, the yaw device 2 drives the nacelle 3 to rotate around the central axis of the tower 1 so that the blades 5 face the wind; when the wind power generation power is less than the solar power generation power, the yaw device 2 drives the nacelle 3 to rotate around the central axis of the tower 1 so that the blades 5 face the light.

[0054] When it is calculated that the wind power generation power is greater than the solar power generation power, the control component will transmit a signal to the yaw device 2, driving the yaw device 2 to drive the nacelle 3 to rotate around the central axis of the tower 1, so that the blades 5 are set to face the wind, so that the current wind direction can drive the blades 5 to rotate, thereby realizing wind power generation; when it is calculated that the solar power generation power is greater than the wind power generation power, the control component will transmit a signal to the yaw device 2, driving the yaw device 2 to drive the nacelle 3 to rotate around the central axis of the tower 1, so that the blades 5 are set to face the light, and the solar cells 6 on the blades 5 are facing the light, thereby realizing solar power generation; in this way, the control component can detect the power generation mode with higher power in real time, realize automatic switching, and ensure that the power generation efficiency will not be reduced.

[0055] The wind direction and speed measuring instrument and the light intensity measuring instrument will collect wind force and sunlight intensity at the same time, and predict and calculate the wind turbine power and solar power generation power through the internal algorithm of the control component, and compare them, and automatically select the higher one of the wind power generation and solar power generation as the power generation mode, that is, when the wind power generation power is higher than the solar power generation power, the wind power generation mode is selected, and when the wind power generation power is lower than the solar power generation power, the solar power generation mode is selected, so that no matter what the environment is, the mode with higher power generation power can be automatically selected for power generation. In this embodiment, the wind direction and speed measuring instrument, the light intensity measuring instrument and the control component cooperate with each other to select a power generation mode with higher power generation efficiency for power generation in the current environment, ensuring that no matter what the environment is, a higher power generation efficiency can be achieved.

[0056] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A wind turbine generator set, characterized in that: include: A tower, wherein a yaw device is provided on the top of the tower; A nacelle, the yaw device is connected to the nacelle, and a power generation device is arranged in the nacelle; A control component, the control component comprising a control component, a wind direction and speed measuring instrument and a light intensity measuring instrument, the wind direction and speed measuring instrument and the light intensity measuring instrument are both connected to the control component by signal, and the control component is connected to the yaw device by signal, so that the yaw device drives the nacelle to rotate around the central axis of the tower; A wheel hub, the wheel hub being drivingly connected to an input shaft of the generator; A plurality of blades are connected to the hub and are arranged in a circle around the center of the hub. A solar cell is arranged on a side of each blade facing away from the tower.

2. The wind turbine generator set according to claim 1, characterized in that: The solar cell is a flexible thin-film solar cell panel.

3. The wind turbine generator set according to claim 1, characterized in that: The blade is provided with a groove, and the wind turbine generator set also includes a cleaning device. A fixing device is provided in the groove, the solar cell is installed in the groove, and the solar cell is connected to the fixing device. The cleaning device is slidably installed on the fixing device, and the cleaning device is in contact with a side of the solar cell away from the blade.

4. The wind turbine generator set according to claim 3, characterized in that: The fixing device includes a motor, a screw rod drivingly connected to the output shaft of the motor, and a sliding member threadedly connected to the screw rod. The cleaning device includes a cleaning rod and a fixing bracket connected to each other. The fixing bracket is connected to the sliding member. The cleaning rod is in contact with a side of the solar cell facing away from the blade.

5. The wind turbine generator set according to claim 3, characterized in that: The depth of the groove is equal to the thickness of the solar cell, and the outer surface of the blade is flush with the outer surface of the solar cell.

6. The wind turbine generator set according to claim 4, characterized in that: The number of the fixing devices in each of the grooves is two, the two fixing devices are arranged at intervals, and the two ends of the solar cell are respectively connected to the two fixing devices.

7. The wind turbine generator set according to claim 6, characterized in that: The number of the fixing brackets is two, and the two fixing brackets are respectively arranged on both sides of the cleaning rod, and the two fixing brackets are respectively connected to the sliding members on the two fixing devices.

8. The wind turbine generator set according to any one of claims 3 to 7, characterized in that: The number of the grooves on each blade is multiple, the number of the solar cells is multiple, the number of the grooves is equal to the number of the solar cells, and they are arranged in a one-to-one correspondence.

9. The wind turbine generator set according to claim 4, characterized in that: The control component is connected to the motor signal.

10. A control method for a wind turbine generator set, the control method for a wind turbine generator set being applied to the wind turbine generator set according to any one of claims 1 to 9, characterized in that: The control method of the wind turbine generator set comprises the following steps: Control the wind direction and wind speed measuring instrument to detect the current wind force and wind direction signal and transmit the detection data to the control component, and control the light intensity measuring instrument to detect the current light intensity and light direction signal and transmit the detection data to the control component; The control component calculates the wind power generation power according to the wind force, the control component calculates the solar power generation power according to the light intensity, and the control component compares the wind power generation power and the solar power generation power; When the wind power generation power is greater than the solar power generation power, the yaw device drives the nacelle to rotate around the central axis of the tower so that the blades face the wind; when the wind power generation power is less than the solar power generation power, the yaw device drives the nacelle to rotate around the central axis of the tower so that the blades face the light.

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