Wind-solar hybrid power generation device and control method thereof

Abstract

The invention discloses a wind-solar complementary power generation device and a control method, and the device comprises a solar fan blade module which is installed on a device main body, and a photovoltaic power generation layer is arranged on fan blades of the solar fan blade module; the output of the wind speed and wind direction detection module is sampled / filtered and then sent to the central control system; the fan blade control module is used for controlling start and stop of fan blades and adjusting the windward angle / propeller pitch; all the modules are electrically connected with the central control system. The control method comprises the following steps: setting a system default state as a solar power generation mode; calculating the windward angle of the current fan blade and the predicted power of wind power generation based on the wind speed and wind direction data; power outputs of wind power generation and solar power generation are compared, and the system is controlled to be switched to a wind power generation mode or a solar power generation mode. According to the invention, the solar power generation efficiency can be fully maintained at a high level, especially when the sun angle is low or the wind speed is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power generation, and particularly relates to a wind-solar complementary power generation device and a control method thereof. BACKGROUND

[0002] The current charging solution of a conventional battery camera and the like mainly adopts solar charging, which is suitable for a long-term unattended scene; a charging wire charging and a replaceable battery solution are flexible backup solutions, which are suitable for a scene that is easy to access or is short-term deployment. For complex conditions (such as continuous rainy weather), a hybrid charging solution (solar + charging wire) or a wind-solar complementary solution can be used to ensure the continuous operation of the device. However, the current solar hybrid wind energy solution has problems of large deployment volume, low efficiency and high cost. Meanwhile, the operation and installation are more complex and time-consuming. It cannot well meet the scene that needs long-term operation but has complex weather conditions, such as a region with continuous rain or insufficient light in winter.

[0003] A Chinese invention patent with the patent number CN101649978A and the patent name of wind-solar complementary street lamp takes into account wind power and light power generation, and light power is mainly used as a supplementary input of wind power. There is a small light power area, and the light receiving surface of the light power is vertical, which leads to low conversion efficiency. A Chinese utility model patent with the patent number CN206093862U and the patent name of wind-solar complementary street lamp takes into account wind power and light power generation, and light power is mainly used as a supplementary input of wind power. There is a small light power area, and the solar panel of the light power is attached to the fan blade and has a vertical inclination angle. When rotating, the solar panel will encounter conversion efficiency fluctuations, which leads to low light power conversion efficiency.

[0004] The prior art cannot generally guarantee the best solar absorption angle. When the wind fan rotates, the angle of the solar panel will change, and the best incidence angle (usually 30°-90°) with sunlight cannot be maintained all the time. This will lead to a significant decrease in solar power generation efficiency, especially at low solar angles (such as in the morning or evening) or when the wind speed is high. Meanwhile, there is a problem of shielding: the rotation of the fan may cause the solar panels to shield each other, further reducing the overall power generation efficiency. Therefore, there is an urgent need to develop a wind-solar complementary power generation device and a control method thereof with higher efficiency and more excellent performance. SUMMARY

[0005] In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is a wind-solar complementary power generation device and a control method thereof.

[0006] To solve the above-mentioned technical problem, the present application is implemented by the following technical scheme:

[0007] In one aspect, the present application provides a wind-solar complementary power generation device, comprising:

[0008] A solar fan module is installed on a device body, the solar fan module has an adjustable attitude / pitch mechanism and a plurality of fan blades, and a photovoltaic power generation layer is arranged on the fan blades;

[0009] A wind speed and direction detection module is installed on the device body, and the wind speed and direction detection module outputs a sampling / filtered signal to a central control system;

[0010] A fan control module is used to control the start / stop and wind angle / pitch adjustment of the solar fan module;

[0011] and a central control system, the solar fan module, the wind speed and direction detection module, and the fan control module are electrically connected to the central control system.

[0012] Further optionally, a solar power statistical module is further included, which is used to collect the voltage / current of the photovoltaic power generation layer in the solar fan module and calculate the power, and send the calculated power to the central control system.

[0013] Further optionally, the wind speed and direction detection module includes a wind speed sensor and a wind direction sensor, and the wind speed sensor and the wind direction sensor are electrically connected to the central control system.

[0014] Further optionally, a storage management module is further included, which includes a battery pack, a bidirectional DC converter / inverter, a BMS protection circuit, and a bus management unit connected in sequence.

[0015] Further optionally, the fan control module includes a servo motor, a stepper motor, a hydraulic or electric actuator, and a mechanical brake and / or an electromagnetic clutch, and is used to realize the rotation start / stop and wind angle / pitch adjustment of the fan blades.

[0016] The application also proposes a control method based on the wind-solar complementary power generation device,

[0017] The system default state is set to a solar power generation mode;

[0018] Based on the obtained wind speed and direction data, the wind angle of the current fan blades and the expected power of wind power generation are calculated;

[0019] The power outputs of wind power generation and solar power generation are compared;

[0020] If the wind power generation power exceeds the solar power generation power by a certain percentage (which can be pre-set control, such as 120%), the system switches to a wind power generation mode; if the wind power generation power is insufficient, the system remains in a solar power generation mode.

[0021] Further optionally, when the wind speed and direction detection module detects that the wind speed is lower than the set minimum value for wind power generation, or when the wind speed and direction detection module detects that the wind direction changes too frequently and cannot maintain a stable windward angle, the system stops the fan blades from rotating and restores the fan blade angle to the optimal angle for solar power generation.

[0022] Further optionally, it also includes: an energy storage management function, configuring an energy storage management module to store excess power while providing a stable power output to the load.

[0023] Alternatively, when the system is in wind power generation mode, the blade rotation control valve in the solar blade module is activated to control the rotation of the blades.

[0024] Optionally, the power output of the wind power generation in the wind power generation mode is monitored in real time and transmitted to the energy storage module or directly supplied to the load; wherein, the central control system dynamically adjusts the windward angle of the fan blades according to the data of the wind speed and wind direction detection module to ensure that the efficiency of wind power generation is maximized.

[0025] Compared with the prior art, this application has the following technical effects:

[0026] This application, by setting up solar fan blade modules and fan blade control modules, can effectively ensure the optimal solar energy absorption angle of the solar fan blade modules and the optimal angle of the solar panels when the wind turbine blades rotate. This can fully ensure that the solar power generation efficiency is maintained at a high level, especially when the solar angle is low (such as in the early morning or evening) or the wind speed is high. Furthermore, the angle of the fan blades can be changed according to different scenarios to adapt to the current wind power generation mode or solar power generation mode, making it more adaptable. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 A schematic diagram of the structure of a wind-solar hybrid power generation device according to an embodiment of this application. Figure 1 ;

[0029] Figure 2 A schematic diagram of the structure of a wind-solar hybrid power generation device according to an embodiment of this application. Figure 2 .

[0030] Among them, 1-wind speed and wind direction detection module, 2-solar fan blade module, 3-energy storage management module, and 4-main body of the device. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment of this application, a wind-solar hybrid power generation device includes:

[0033] The solar fan blade module 2 is installed on the main body 4 of the device. The solar fan blade module 2 has an adjustable attitude / pitch mechanism and several fan blades. A photovoltaic power generation layer is provided on the fan blades.

[0034] Wind speed and direction detection module 1 is installed on the main body 4 of the device. The output of wind speed and direction detection module 1 is sent to the central control system after sampling / filtering.

[0035] The fan blade control module is used to control the start and stop of the solar fan blade module 2 and the adjustment of the windward angle / pitch.

[0036] The solar fan blade module 2, the wind speed and direction detection module 1, and the fan blade control module are all electrically connected to the central control system.

[0037] This embodiment, by setting up a solar fan blade module 2 and a fan blade control module, can effectively ensure the optimal solar energy absorption angle of the solar fan blade module 2 and the optimal angle of the solar panel when the wind turbine blades rotate. This can fully ensure that the solar power generation efficiency is maintained at a high level, especially when the solar angle is low (such as in the early morning or evening) or the wind speed is high. Furthermore, the angle of the fan blades can be changed according to different scenarios to adapt to the current wind power generation mode or solar power generation mode, making it more adaptable.

[0038] A photovoltaic power generation layer is provided on the outer surface of the fan blade. The photovoltaic power generation layer is preferably a flexible photovoltaic thin film, but it can also be a thin glass stack or a segmented rigid component. In this embodiment, the fan blade needs to have an adjustable attitude / pitch mechanism to support both "photovoltaic power generation static mode" and "wind power generation rotating mode" to meet the needs of solar or photovoltaic power generation or wind power generation mode under different conditions.

[0039] Further, in this embodiment, the fan blade control module includes a servo motor, a stepper motor, a hydraulic or electric actuator, and a mechanical brake and / or an electromagnetic clutch. The fan blade control module is used to realize the rotation start / stop of the fan blades and the adjustment of the windward angle / pitch. Specifically, the fan blade control module is used to control the rotation or locking of the fan blades, such as... Figure 1 This illustration depicts a scenario where the fan blades in the solar fan blade module 2 are in solar energy mode, meaning the fan blades are receiving solar energy and converting it into solar power; for example... Figure 2 This illustration depicts a scenario where the fan blades in the solar fan blade module 2 are in wind power generation mode, i.e., the fan blades rotate to a vertical or tilted angle, and the rotation of the fan blades gradually converts wind energy into electrical energy for storage or utilization.

[0040] Furthermore, this embodiment also includes a solar power statistics module, which is used to collect the voltage / current of the photovoltaic power generation layer in the solar fan blade module 2, calculate the power, and send the calculated power to the central control system. Preferably, the solar power statistics module has an MPPT function or provides feedback for MPPT control.

[0041] In this embodiment, the wind speed and wind direction detection module 1 includes a wind speed sensor and a wind direction sensor, both of which are electrically connected to the central control system.

[0042] Furthermore, it also includes: an energy storage management module 3, which includes: a battery pack, a bidirectional DC-DC converter / inverter, a BMS protection circuit and a bus management unit connected in sequence.

[0043] In this embodiment, the central control system (CCS) preferably employs a microcontroller or embedded processor to perform functions such as sensor data fusion, power assessment, mode determination, actuator control, energy management, and communication.

[0044] In another embodiment of this application, a control method based on the aforementioned wind-solar hybrid power generation device is also proposed.

[0045] Set the system default to solar power generation mode;

[0046] Based on the acquired wind speed and direction data, the current windward angle of the fan blades and the expected power output of the wind power generation are calculated.

[0047] Compare the power output of wind power generation and solar power generation;

[0048] If the wind power generation exceeds the solar power generation by a certain percentage (which can be preset and controlled, such as 120%), the system will switch to wind power generation mode; if the wind power generation is insufficient, the system will maintain solar power generation mode.

[0049] For reference Figure 1 The system defaults to solar power generation mode, with the fan blade angle adjusted to the optimal angle for solar power generation (e.g., horizontal angle). Preferably, the solar power statistics module is a solar power analyzer, which monitors the power output of the solar panels in real time and transmits the data to the central control system.

[0050] In the above-mentioned wind speed and direction detection process, the following are included: when the wind speed and direction detection module 1 detects that the wind speed is lower than the set minimum value for wind power generation (such as 3m / s), or when the wind speed and direction detection module 1 detects that the wind direction changes too frequently and cannot maintain a stable windward angle, the system stops the fan blades from rotating and restores the fan blade angle to the optimal angle for solar power generation.

[0051] When the system is in wind power generation mode, the blade rotation control valve in the solar blade module 2 is activated to control the rotation of the blades.

[0052] Furthermore, the power output of the wind power generation in the wind power generation mode is monitored in real time and transmitted to the energy storage module or directly supplied to the load; the central control system dynamically adjusts the windward angle of the fan blades (e.g., 45°) according to the data from the wind speed and wind direction detection module 1 to ensure that the efficiency of wind power generation is maximized.

[0053] This embodiment also includes an energy storage management function, which configures the energy storage management module 3 to store excess power while providing a stable power output to the load.

[0054] By incorporating solar fan blade module 2 and fan blade control module, the optimal solar energy absorption angle of solar fan blade module 2 can be effectively guaranteed, ensuring the optimal angle of the solar panel when the wind turbine blades rotate. This allows for sustained high levels of solar power generation efficiency, especially at low solar angles (such as early morning or evening) or high wind speeds. Furthermore, the fan blade angle can be adjusted according to different scenarios to adapt to current wind power generation or solar power generation modes, resulting in greater adaptability. In summary, this application has promising market application scenarios.

[0055] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0058] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. The preferred embodiments have been described in detail. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.

Claims

1. A wind-solar hybrid power generation device, characterized in that, include: A solar fan blade module is installed on the main body of the device. The solar fan blade module has an adjustable attitude / pitch mechanism and several fan blades. A photovoltaic power generation layer is provided on the fan blades. A wind speed and direction detection module is installed on the main body of the device. The output of the wind speed and direction detection module is sent to the central control system after sampling / filtering. The fan blade control module is used to control the start and stop of the solar fan blade module and the adjustment of the windward angle / pitch. The solar fan blade module, the wind speed and direction detection module, and the fan blade control module are all electrically connected to the central control system.

2. The wind-solar hybrid power generation device according to claim 1, characterized in that, Also includes: The solar power statistics module is used to collect the voltage / current of the photovoltaic power generation layer in the solar fan blade module, calculate the power, and send the calculated power to the central control system.

3. The wind-solar hybrid power generation device according to claim 1, characterized in that, The wind speed and wind direction detection module includes a wind speed sensor and a wind direction sensor, both of which are electrically connected to the central control system.

4. The wind-solar hybrid power generation device according to claim 1, characterized in that, Also includes: The energy storage management module includes: a battery pack, a bidirectional DC-DC converter / inverter, a BMS protection circuit, and a bus management unit, which are connected in sequence.

5. The wind-solar hybrid power generation device according to claim 1, characterized in that, The fan blade control module includes a servo motor, a stepper motor, a hydraulic or electric actuator, and a mechanical brake and / or an electromagnetic clutch. The fan blade control module is used to realize the rotation start and stop of the fan blade and the adjustment of the windward angle / pitch.

6. A control method for a wind-solar hybrid power generation device according to any one of claims 1 to 5, characterized in that, Set the system default to solar power generation mode; Based on the acquired wind speed and direction data, the current windward angle of the fan blades and the expected power output of the wind power generation are calculated. Compare the power output of wind power generation and solar power generation; If the wind power generation exceeds the solar power generation by a certain proportion, the system switches to wind power generation mode; if the wind power generation is insufficient, the system maintains solar power generation mode.

7. The control method according to claim 6, characterized in that, When the wind speed and direction detection module detects that the wind speed is lower than the set minimum value for wind power generation, or when the wind speed and direction detection module detects that the wind direction changes too frequently and cannot maintain a stable windward angle, the system stops the fan blades from rotating and restores the fan blade angle to the optimal angle for solar power generation.

8. The control method according to claim 6, characterized in that, Also includes: The energy storage management function configures an energy storage management module to store excess power while providing a stable power output to the load.

9. The control method according to any one of claims 6 to 8, characterized in that, When the system is in wind power generation mode, the blade rotation control valve in the solar fan blade module is activated to control the rotation of the fan blades.

10. The control method according to claim 9, characterized in that, In the aforementioned wind power generation mode, the power output of wind power generation is monitored in real time and transmitted to the energy storage module or directly supplied to the load. The central control system dynamically adjusts the windward angle of the fan blades based on the data from the wind speed and direction detection module to ensure that the efficiency of wind power generation is maximized.

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