Suction type wing-shaped solar sail and control method

Abstract

The invention discloses a suction type wing-shaped solar sail and a control method, the suction type wing-shaped solar sail comprises a sail body unit, a suction fan, a first driving unit and a control unit, the sail body unit comprises a sail body and a plurality of solar cell panels, the sail body is of an elliptic cylinder structure and is provided with an air channel extending in the axial direction of the sail body, and the solar cell panels are arranged in the air channel. An air inlet communicated with the air duct is formed in the side wall of the sail, and all the solar cell panels are arranged on the outer side wall of the sail; the suction fan is arranged at the top of the sail, the inlet end of the suction fan is communicated with the air duct, and the suction fan is used for pumping air in the air duct to the outside; the first driving unit is connected with the sail and used for driving the sail to rotate so as to adjust the orientation of the air inlet. The suction type wing-shaped solar sail has the advantages that compared with a traditional sail, the suction type wing-shaped solar sail can automatically adjust the optimal sail rotation angle, and the comprehensive utilization rate of solar energy and wind energy is increased.

Description

Technical Field

[0001] The invention relates to the technical field of sail-aided navigation and photovoltaic power generation, and in particular to a suction-wing-shaped solar sail and a control method thereof. Background Art

[0002] Shipping is responsible for more than 80% of global trade and its carbon emissions account for about 3% of the world's total carbon emissions. Ship decarbonization and green development have attracted much attention. The International Maritime Organization (IMO) adopted a more stringent emission reduction target at the 80th session of the Marine Environment Protection Committee (MEPC80), and will accelerate the elimination of existing fuel ships through carbon taxes in 2025. How to utilize clean energy at sea, reduce ships' dependence on fossil fuels, further reduce ship carbon emissions, promote sustainable development of ships, and achieve low-carbon shipping has become one of the urgent issues to be solved in the shipping industry.

[0003] Marine wind and solar energy resources are widely distributed and have greater potential than those on land. Sail navigation and photovoltaic power generation are the most innovative and representative green ship technologies for the application of clean energy on ships. Existing solar sails (such as a multi-directional angle-adjustable solar sail disclosed in application number 202111499592.2) cannot automatically adjust the optimal sail angle, resulting in a low comprehensive utilization rate of solar and wind energy. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and propose a suction wing-shaped solar sail and a control method to solve the technical problem that the solar sail in the prior art cannot automatically adjust the optimal sail angle, resulting in a low comprehensive utilization rate of solar energy and wind energy.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a suction wing-shaped solar sail, comprising: A sail unit, comprising a sail and a plurality of solar panels, wherein the sail is an elliptical column structure and has a wind channel extending along its axial direction, an air inlet connected to the wind channel is provided on the side wall of the sail, and each of the solar panels is arranged on the outer side wall of the sail; A suction fan, arranged on the top of the sail, with its inlet end connected to the air duct, for sucking the air in the air duct to the outside; a first driving unit connected to the sail and used to drive the sail to rotate so as to adjust the direction of the air inlet; A control unit is electrically connected to the first driving unit, and is used to collect and process real-time wind and light data, and calculate and output the sail turning angle corresponding to the maximum value of the comprehensive power under real-time wind and light conditions.

[0006] Furthermore, the air duct is a gradually shrinking structure from top to bottom.

[0007] Furthermore, the air inlet extends along the axial direction of the sail.

[0008] Furthermore, each of the solar panels is a flexible structure. Furthermore, the suction wing-type solar sail also includes a second driving unit, which is connected to the sail and is used to drive the sail to rotate so as to adjust the inclination angle of the sail.

[0009] Furthermore, the first driving unit includes a movable seat and a first rotating driving member, the first rotating driving member is fixedly mounted on the movable seat, and an output end of the first rotating driving member is fixedly connected to the bottom of the sail for driving the sail to rotate.

[0010] Furthermore, the second driving unit includes a fixed seat and a second rotating driving member, the fixed seat is fixed on the hull, the movable seat is rotatably arranged on the fixed seat, the second rotating driving member is fixed on the fixed seat, and the output end of the second rotating driving member is fixedly connected to the movable seat for driving the movable seat to rotate.

[0011] Furthermore, the sail unit also includes a flap, which extends along the axial direction of the sail and is arranged on the outer side wall of the sail.

[0012] Furthermore, the control unit includes a wind speed and direction sensor, an irradiation sensor, a host computer and a controller. The wind speed and direction sensor and the irradiation sensor are both arranged on the top of the sail. The wind speed and direction sensor is used to collect real-time wind speed and wind direction, and the irradiation sensor is used to collect real-time light intensity and light direction. The host computer is electrically connected to the wind speed and direction sensor and the irradiation sensor to obtain wind speed, wind direction, light intensity and light direction data to calculate the sail turning angle corresponding to the maximum value of the comprehensive power under real-time wind and light conditions. The controller is electrically connected to the host computer and the first rotating drive component to receive instructions from the host computer and control the rotation angle of the first rotating drive component.

[0013] The present invention also provides a suction wing-shaped solar sail control method, which is applicable to the above-mentioned suction wing-shaped solar sail, and comprises the following steps: The control unit collects real-time wind speed, wind direction, light intensity and light direction data; The control unit processes real-time wind speed, wind direction, light intensity and light direction data; The control unit calculates the wind power and photovoltaic power within the 360° rotation angle of the sail respectively; The control unit calculates the sum of wind power and photovoltaic power under various angle conditions to obtain the sail turning angle corresponding to the maximum sum; The control unit outputs the sail turning angle corresponding to the maximum value of the comprehensive power under the conditions of real-time wind speed, wind direction, light intensity and light direction.

[0014] Compared with the prior art, the beneficial effects of the present invention include: when there is wind, the suction fan is turned on, and a small amount of air is sucked into the air duct along the air inlet and discharged from the top of the air duct, so that the airflow reattaches to the surface of the sail. Due to the different wind speeds on both sides of the sail, a pressure difference is formed, thereby generating a huge thrust F2 that propels the ship forward. The control unit collects and processes real-time wind speed, wind direction, light intensity and light direction data, and calculates the wind power and photovoltaic power generated within the 360° angle of the sail respectively, and then calculates the sum of the wind power and photovoltaic power generated under various angle conditions to obtain the corresponding sail angle when the sum is maximum. Finally, the control unit outputs the sail angle corresponding to the maximum value of the comprehensive power under the conditions of real-time wind speed, wind direction, light intensity and light direction, and the first drive unit is started to drive the sail to rotate so that the sail is at the optimal angle. Compared with traditional sails, the suction wing-shaped solar sail can automatically adjust the optimal sail angle to improve the comprehensive utilization rate of solar energy and wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a suction wing-shaped solar sail provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a suction wing-shaped solar sail from another perspective; Figure 3 The present invention provides a suction wing-shaped solar wind sail. When the suction fan is turned off, the sail is subjected to force diagram; Figure 4 The present invention provides a suction wing-shaped solar sail. When the sail is not at the optimal turning angle, the sail is subjected to force; Figure 5 The present invention provides a suction wing-shaped solar sail. When the sail is at the optimal turning angle, the sail is subjected to force. Figure 6 It is a structural schematic diagram of a suction wing-shaped solar sail provided by the present invention applied to a ship hull; Figure 7 This is a schematic diagram of photovoltaic power generation principle of a suction wing-shaped solar sail provided by the present invention; Figure 8 It is a flow chart of the self-steering of a sail in a suction wing-type solar sail provided by the present invention; In the figure: 1 - hull, 100 - sail unit, 110 - sail, 111 - wind duct, 112 - air inlet, 120 - solar panel, 130 - flap, 140 - frame, 200 - suction fan, 300 - first driving unit, 310 - movable seat, 320 - first rotating driving member, 400 - second driving unit, 410 - fixed seat. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] The present invention provides a suction wing-shaped solar sail, the structure of which is as follows: Figure 1 - Figure 6 As shown, it includes a sail unit 100, a suction fan 200, a first drive unit 300 and a control unit. The sail unit 100 includes a sail 110 and a plurality of solar panels 120. The sail 110 is an elliptical column structure and has a wind duct 111 extending along its axial direction. An air inlet 112 connected to the wind duct 111 is opened on the side wall of the sail 110. Each of the solar panels 120 is arranged on the outer side wall of the sail 110. The suction fan 200 is arranged on the outer side wall of the sail 110. The top of the sail 110, whose inlet end is connected to the air duct 111, is used to draw the air in the air duct 111 to the outside; the first driving unit 300 is connected to the sail 110, and is used to drive the sail 110 to rotate so as to adjust the direction of the air inlet 112; the control unit is electrically connected to the first driving unit 300, and is used to collect and process real-time wind and light data, and calculate and output the turning angle of the sail 110 corresponding to the maximum value of the comprehensive power under the real-time wind and light conditions.

[0018] When there is wind, the suction fan 200 is turned on. The suction fan 200 will suck a small amount of air into the air duct 111 along the air inlet 112 and discharge it from the top of the air duct 111, so that the airflow reattaches to the surface of the sail 110. Due to the different wind speeds on both sides of the sail 110, a pressure difference is formed, thereby generating a huge thrust F2 that propels the ship forward. The control unit collects and processes real-time wind speed, wind direction, light intensity and light direction data, and calculates the wind power and photovoltaic power generated within the 360° rotation angle of the sail 110, and then calculates each The sum of the wind power generated and the photovoltaic power generated under the angle condition is used to obtain the turning angle of the sail 110 corresponding to the maximum sum. Finally, the control unit outputs the turning angle of the sail 110 corresponding to the maximum comprehensive power under the real-time wind speed, wind direction, light intensity and light direction conditions. The first driving unit 300 is started to drive the sail 110 to rotate so that the sail 110 is at the optimal angle. Compared with the traditional sail 110, the suction wing-type solar sail can automatically adjust the optimal turning angle of the sail 110 to improve the comprehensive utilization rate of solar energy and wind energy.

[0019] As a preferred embodiment, please refer to Figure 2 The wind duct 111 is a tapered structure from top to bottom, which can make the suction effect of the bottom of the sail 110 equivalent to that of the top of the sail 110, ensure that the suction effect of the sail 110 from top to bottom is basically consistent, make the airflow evenly adhere to the surface of the sail 110, and make full use of the entire sail 110 to obtain the thrust F2.

[0020] As a preferred embodiment, please refer to Figure 2 The air inlet 112 extends along the axial direction of the sail 110, so that the suction effect of the bottom of the sail 110 is equivalent to that of the top of the sail 110, ensuring that the suction effect of the sail 110 from top to bottom is basically consistent, so that the airflow is evenly attached to the surface of the sail 110, and the entire sail 110 is more fully utilized to obtain the thrust F2.

[0021] As a preferred embodiment, the suction wing-type solar sail is mainly divided into three situations during operation. The first is that when there is wind during the navigation of the ship, the suction fan 200 is in a closed state, and the sail 110 will generate resistance F1 like any other non-lifting structure on the deck of the ship; the second is that when there is wind during the navigation of the ship, the suction fan 200 is in an open state, a small amount of air will be sucked into the air duct 111 and discharged from the top of the air duct 111, so that the airflow reattaches to the surface of the sail 110. Due to the different wind speeds on both sides of the sail 110, a pressure difference is formed, thereby generating a huge thrust F2 to propel the ship forward; the third is that the direction of the sail 110 can be adjusted according to the wind speed and wind direction to maximize the pressure difference on both sides of the sail 110 and generate a maximum thrust F2.

[0022] As a preferred embodiment, each of the solar panels 120 is a flexible structure that meets the requirements of wind resistance and pressure resistance. To ensure the complete continuity of the airflow, each of the solar panels 120 needs to fit the outer wall of the sail 110 as closely as possible. To ensure that each of the solar panels 120 does not produce destructive effects when experiencing severe sea conditions, special glue is used to completely fit each of the solar panels 120 to the outer wall of the sail 110.

[0023] As a preferred embodiment, please refer to Figure 1 and Figure 2 The suction wing-shaped solar sail also includes a second driving unit 400, which is connected to the sail 110 and is used to drive the sail 110 to rotate so as to adjust the inclination angle of the sail 110 and realize the folding and unfolding of the sail 110. The folding and unfolding of the sail 110 can be independently selected according to the wind conditions to prevent the sail 110 from generating resistance to the ship when the wind conditions are bad. Taking a roll-on / roll-off ship as an example, four suction wing-shaped solar sails are installed on the deck, and sufficient deck space is reserved for the folding and unfolding of the sail 110. When there is an external environment such as severe sea conditions that may cause damage to the sail 110, or when the wind conditions are not sufficient to propel the ship, the sail 110 will not be raised, otherwise the sail 110 will be raised to perform wind propulsion and photovoltaic power generation.

[0024] As a preferred embodiment, please refer to Figure 1 and Figure 2 The first driving unit 300 includes a movable seat 310 and a first rotating driving member 320. The first rotating driving member 320 is fixed on the movable seat 310. The output end of the first rotating driving member 320 is fixedly connected to the bottom of the sail 110 for driving the sail 110 to rotate. By manipulating the first rotating driving member 320, the first rotating driving member 320 can drive the sail 110 to rotate, thereby realizing the adjustment of the direction of the air inlet 112.

[0025] As a preferred embodiment, please refer to Figure 1 and Figure 2 The second driving unit 400 includes a fixed seat 410 and a second rotating driving member, the fixed seat 410 is fixed on the hull 1, the movable seat 310 is rotatably set on the fixed seat 410, the second rotating driving member is fixed on the fixed seat 410, and the output end of the second rotating driving member is fixedly connected to the movable seat 310 for driving the movable seat 310 to rotate. By manipulating the second rotating driving member, the second rotating driving member drives the movable seat 310 to rotate, and drives the sail 110 to rotate, thereby adjusting the inclination angle of the sail 110.

[0026] As a preferred embodiment, please refer to Figure 1 and Figure 2 The sail unit 100 further includes a flap 130, which extends along the axial direction of the sail 110 and is disposed on the outer side wall of the sail 110 to cooperate with the suction fan 200 to increase the pressure difference between the inside and outside of the sail 110 to obtain greater thrust.

[0027] As a preferred embodiment, please refer to Figure 2 The flap 130 is close to the air inlet 112 to cooperate with the suction fan 200 to increase the pressure difference between the inside and outside of the sail 110 to obtain greater thrust.

[0028] As a preferred embodiment, the flap 130 can rotate relative to the sail 110, and cooperate with the suction fan 200 to increase the pressure difference between the inside and outside of the sail 110, so as to obtain greater thrust.

[0029] As a preferred embodiment, please refer to Figure 1 and Figure 2 The side of the flap 130 away from the sail 110 is a pointed structure to cooperate with the sail 110 to form a streamlined structure to reduce resistance.

[0030] As a preferred embodiment, please refer to Figure 1 and Figure 2 The sail unit 100 further includes a frame 140. The frame 140 is a grid structure and is fixed to the outer wall of the sail 110. Each of the solar panels 120 is respectively arranged in each grid of the frame 140. The frame 140 can not only protect the solar panels 120, but also can be used to wire the solar panels 120.

[0031] As a preferred embodiment, please refer to Figure 7 Each of the solar panels 120 converts solar energy into direct current, which is then input into an inverter through a combiner box to invert the direct current into alternating current, and then through a transformer to transform the alternating current into 230V alternating current and incorporated into a ship lighting distribution board for daily use.

[0032] As a preferred embodiment, please refer to Figure 8The control unit includes a wind speed and direction sensor, an irradiation sensor, a host computer and a controller. The wind speed and direction sensor and the irradiation sensor are both arranged on the top of the sail 110. The wind speed and direction sensor is used to collect real-time wind speed and wind direction. The irradiation sensor is used to collect real-time light intensity and light direction. The host computer is electrically connected to the wind speed and direction sensor and the irradiation sensor to obtain wind speed, wind direction, light intensity and light direction data to calculate the turning angle of the sail 110 corresponding to the maximum value of the comprehensive power under real-time wind and light conditions. The controller is electrically connected to the host computer and the first rotating drive member 320. The controller is connected to receive the command of the host computer and control the rotation angle of the first rotating drive member 320. The mathematical model is first established by using the wind power calculation formula and the photovoltaic power generation power. Then, the turning angle of the sail 110 corresponding to the maximum value of the comprehensive power under various wind conditions and lighting conditions is calculated by combining the mathematical model with the prediction algorithm. The real-time measured wind speed, wind direction, light intensity and light direction data are input into the host computer. The angle corresponding to the maximum value of the sum of the wind power generated and the photovoltaic power generated at each angle is taken, and the optimal turning angle of the sail 110 is output to the controller. Finally, the controller adjusts the first rotating drive member 320 to rotate.

[0033] As a preferred embodiment, the host computer is also used to obtain the rotational speed of the suction fan 200 corresponding to the maximum value of the comprehensive power under real-time wind conditions and light conditions, and the controller is also electrically connected to the suction fan 200 to control the rotational speed of the suction fan 200.

[0034] The present invention also provides a suction wing-shaped solar sail control method, which is applicable to the above-mentioned suction wing-shaped solar sail, and comprises the following steps: The wind speed and wind direction sensor collects real-time wind speed, wind direction, and light intensity data, and the irradiance sensor collects real-time light intensity and light direction data; The host computer obtains real-time wind speed, wind direction, light intensity and light direction data; The host computer calculates the wind power and photovoltaic power generated by the sail 110 within a 360° rotation angle. The host computer calculates the sum of wind power and photovoltaic power under various angle conditions to obtain the turning angle of the sail 110 corresponding to the maximum sum; The controller controls the first rotation driving member 320 to drive the sail 110 to rotate to the angle.

[0035] In order to better understand the present invention, the following Figure 1 - Figure 8 The working principle of the technical solution of the present invention is described in detail: When in use, the sail 110 is vertically arranged on the hull 1. When there is wind, the second rotating driving member is controlled so that the second rotating driving member drives the movable seat 310 to rotate, and drives the sail 110 to rotate, so as to adjust the inclination angle of the sail 110. The sail 110 is raised, and the suction fan 200 is turned on. The suction fan 200 will suck a small amount of air into the air duct 111 along the air inlet 112 and discharge it from the top of the air duct 111, so that the airflow reattaches to the surface of the sail 110. The wind speeds on both sides of the sail 110 are different, forming a pressure difference, thereby generating a huge thrust F2 that propels the ship forward. The suction fan 200 is located at the top of the sail 110, and the suction wind force at the bottom of the sail 110 is relatively small. The wind duct 111 is a tapered structure from top to bottom, which can make the suction effect of the bottom of the sail 110 and the top of the sail 110 equivalent, ensuring that the suction effect of the sail 110 from top to bottom is basically the same, so that the airflow is evenly attached to the surface of the sail 110, and the entire sail 110 is more fully utilized to obtain the thrust F2. The sensor collects real-time wind speed and wind direction data, the irradiance sensor collects real-time light intensity and light direction data, the host computer processes the real-time wind speed, wind direction, light intensity and light direction data, and calculates the wind power and photovoltaic power generated by the sail 110 within a 360° rotation angle, and then calculates the sum of the wind power and photovoltaic power generated under various angle conditions to obtain the corresponding angle of the sail 110 when the sum is maximum, and finally outputs the maximum value of the comprehensive power under the conditions of real-time wind speed, wind direction, light intensity and light direction through the controller. The first rotating drive member 320 controls the sail 110 to rotate to the angle corresponding to the sail 110, so that the sail 110 is at the optimal angle. Compared with the traditional sail body, the suction wing-shaped solar sail can automatically adjust the optimal sail 110 angle to improve the comprehensive utilization rate of solar energy and wind energy. The suction wing-shaped solar sail can realize the maximum utilization of wind energy. Compared with the traditional sail body, the structure is simple and the deck space is small. When the wind is strong, the rotation of the sail body is not affected and is less affected by severe wind conditions, and the requirements for wind conditions are low.

[0036] The suction wing-shaped solar sail and control method provided by the present invention have the following beneficial effects: (1) The suction wing-shaped sail is combined with a photovoltaic power generation system to achieve the purpose of comprehensive and efficient utilization of wind energy and solar energy. The sail 110 can be independently selected to be retracted or deployed according to wind conditions to prevent the sail 110 from generating resistance F1 on the ship when the wind conditions are bad; (2) The wind duct 111 is a tapered structure from top to bottom, which can make the suction effect of the bottom of the sail 110 equal to that of the top of the sail 110, ensure that the suction effect of the sail 110 from top to bottom is basically the same, make the airflow evenly adhere to the surface of the sail 110, and make full use of the entire sail 110 to obtain the thrust F2. The suction wing-shaped solar sail can maximize the utilization of wind energy. Compared with the traditional sail body, it has a simple structure and occupies less deck space. When the wind is strong, the rotation of the sail body is not affected, and it is less affected by bad wind conditions, and has lower requirements for wind conditions. (3) Compared with the traditional sail, the suction wing-shaped solar sail can select the most suitable sail 110 turning angle according to the real-time monitored wind speed, wind direction, light intensity and light direction data, complete automatic steering, and improve the comprehensive utilization rate of wind energy and solar energy.

[0037] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A suction wing-shaped solar sail, characterized in that: include: A sail unit, comprising a sail and a plurality of solar panels, wherein the sail is an elliptical column structure and has a wind channel extending along its axial direction, an air inlet connected to the wind channel is provided on the side wall of the sail, and each of the solar panels is arranged on the outer side wall of the sail; A suction fan, arranged on the top of the sail, with its inlet end connected to the air duct, for sucking the air in the air duct to the outside; a first driving unit connected to the sail and used to drive the sail to rotate so as to adjust the direction of the air inlet; A control unit is electrically connected to the first driving unit, and is used to collect and process real-time wind and light data, and calculate and output the sail turning angle corresponding to the maximum value of the comprehensive power under real-time wind and light conditions.

2. The suction wing-shaped solar sail according to claim 1, characterized in that: The air duct is a gradually shrinking structure from top to bottom.

3. The suction wing-shaped solar sail according to claim 1, characterized in that: The air inlet extends along the axial direction of the sail.

4. The suction wing-shaped solar sail according to claim 1, characterized in that: Each of the solar cell panels is a flexible structure.

5. The suction wing-shaped solar sail according to claim 1, characterized in that: It also includes a second driving unit, which is connected to the sail and is used to drive the sail to rotate so as to adjust the inclination angle of the sail.

6. The suction wing-shaped solar sail according to claim 5, characterized in that: The first driving unit includes a movable seat and a first rotating driving member, the first rotating driving member is fixedly arranged on the movable seat, and an output end of the first rotating driving member is fixedly connected to the bottom of the sail for driving the sail to rotate.

7. The suction wing-shaped solar sail according to claim 6, characterized in that: The second driving unit includes a fixed seat and a second rotating driving member, the fixed seat is fixed on the hull, the movable seat is rotatably arranged on the fixed seat, the second rotating driving member is fixed on the fixed seat, and the output end of the second rotating driving member is fixedly connected to the movable seat for driving the movable seat to rotate.

8. The suction wing-shaped solar sail according to claim 1, characterized in that: The sail unit further comprises a flap, which extends along the axial direction of the sail and is arranged on the outer side wall of the sail.

9. The suction wing-shaped solar sail according to claim 6, characterized in that: The control unit includes a wind speed and direction sensor, an irradiation sensor, a host computer and a controller. The wind speed and direction sensor and the irradiation sensor are both arranged on the top of the sail. The wind speed and direction sensor is used to collect real-time wind speed and wind direction, and the irradiation sensor is used to collect real-time light intensity and light direction. The host computer is electrically connected to the wind speed and direction sensor and the irradiation sensor to obtain wind speed, wind direction, light intensity and light direction data to calculate the sail turning angle corresponding to the maximum value of the comprehensive power under real-time wind and light conditions. The controller is electrically connected to the host computer and the first rotating drive component to receive instructions from the host computer and control the rotation angle of the first rotating drive component.

10. A method for controlling a suction wing-shaped solar sail, applicable to the suction wing-shaped solar sail as claimed in any one of claims 1 to 9, characterized in that: The steps include: The control unit collects real-time wind speed, wind direction, light intensity and light direction data; The control unit processes real-time wind speed, wind direction, light intensity and light direction data; The control unit calculates the wind power and photovoltaic power within the 360° rotation angle of the sail respectively; The control unit calculates the sum of wind power and photovoltaic power under various angle conditions to obtain the sail turning angle corresponding to the maximum sum; The control unit outputs the sail turning angle corresponding to the maximum value of the comprehensive power under the conditions of real-time wind speed, wind direction, light intensity and light direction.

Images