Agricultural and sideline product drying system and method based on wind energy direct drive and photovoltaic complementation suitable for dry areas

Abstract

A drying system and method for agricultural and sideline products based on direct wind power and photovoltaic complementarity, suitable for arid regions, belongs to the field of new energy drying technology. It solves the problem that existing technologies cannot simultaneously achieve direct wind power drive and photovoltaic complementarity. Key technical points: When wind power is sufficient, a first wind turbine directly drives a first fan for efficient drying; photovoltaic panels convert solar energy into electrical energy, which is stored in an energy storage device via an inverter; when wind power is insufficient, a first clutch switches, and the energy storage device supplies power to the first engine, driving the first fan to continue rotating; a second clutch switches, and the energy storage device supplies power to the second engine, driving the exhaust fan and induced draft fan to continue operating. This invention improves the overall conversion efficiency of wind and solar resources to effective drying power from the source, achieving efficient comprehensive utilization of wind and solar energy, directly reducing the overall energy consumption of the system; it also reduces nutrient and quality loss during the drying process, increasing product value.

Description

Technical Field

[0001] This invention relates to the field of new energy drying technology, specifically to a drying system and method for agricultural and sideline products based on wind power direct drive and photovoltaic complementarity, suitable for dry areas. Background Technology

[0002] Drying agricultural and sideline products is a crucial step in post-harvest processing and the food industry, playing a vital role in maintaining material quality, extending shelf life, and enhancing product value. Currently, most regions in my country still widely use coal-fired or electric heating methods for drying, which are not only energy-intensive and costly but also generate greenhouse gases and pollutants, placing significant pressure on the environment. In regions like Xinjiang, Inner Mongolia, and Ningxia, which are rich in wind and solar resources and have low air humidity, utilizing clean energy sources such as solar and wind power for drying has become an important development direction. If this technology can achieve efficient and continuous operation, it will significantly reduce drying energy consumption and carbon emissions, while also helping to maintain the nutritional value and original quality of agricultural products, thus possessing good technical, economic, and environmental benefits.

[0003] In the field of wind-solar hybrid drying, several technical solutions have attempted to improve system continuity and energy efficiency through multi-energy coupling, but problems such as long energy conversion paths, system complexity, and low overall efficiency still exist. For example, an existing patent for a wind-solar hybrid energy-powered forage drying system designs a drying system that includes multiple devices such as photovoltaic power generation, wind power generation, solar air collection, water collection, and heat exchangers. While continuous operation is ensured through battery energy storage, its energy utilization still follows an indirect path of "wind / solar energy - electrical energy - mechanical energy / thermal energy." All wind and solar resources must be converted into electrical energy before utilization, resulting in multiple losses such as power generation efficiency, charging and discharging losses, and electrical component efficiency. Overall energy utilization still has room for improvement. Furthermore, the system includes two sets of collectors, circulating water pumps, heat exchangers, condensers, etc., resulting in numerous devices and complex piping and control systems. Another existing patent for a solar-driven large temperature difference heating system and method, while primarily targeting the heating sector, uses a solar thermal storage-driven heat pump combined with off-peak electricity supplementation, reflecting a common problem in current solar thermal utilization. The existing patent describes a smart drying oven that integrates photovoltaic, wind power, Fresnel concentrator, vacuum tube air heat collection, and waste heat recovery technologies to achieve intelligent control of the drying process. However, this system is extremely complex, involving a large number of heat collection, concentrator, dust removal, dehumidification, and control components. It has a large initial investment and is suitable for large-scale centralized drying, but it is difficult to promote and popularize in decentralized, small- and medium-scale agricultural and sideline product drying scenarios. Another existing patent describes a solar and wind complementary heat pump drying and heating system that combines solar photovoltaic and wind power generation. The electricity is stored in a battery and used to drive the heat pump system to achieve drying and heating. Its energy path is "wind and solar resources - electricity - battery - heat pump (electricity - heat energy)," which involves multiple energy form conversions, resulting in large conversion losses. The system is also dependent on the heat pump, has a complex structure, and has high initial investment and maintenance costs.

[0004] In summary, while existing wind-solar hybrid drying technologies have made progress in utilizing clean energy, they still generally suffer from the following shortcomings: First, the energy utilization path is long, with wind and solar energy mostly converted into electricity before reuse, undergoing multiple conversions in the "power generation-storage-consumption" process. This long energy path results in significant conversion losses and limits the overall system efficiency. Second, the system structure is complex, integrating multiple subsystems such as power generation, heat collection, energy storage, heat pumps, and control, leading to high investment costs and maintenance difficulties. Third, there is a high dependence on the power grid or batteries, requiring the consumption of stored electrical energy or external power sources to maintain operation during periods without wind or sunlight, and operating costs and carbon emissions have not been fundamentally addressed. Fourth, many solutions still focus on medium- and high-temperature "drying," but high temperatures can easily lead to a decline in the quality of heat-sensitive agricultural products, while ambient temperature direct air drying technology, suitable for high-quality drying, has not been fully integrated with the efficient direct drive mode. Fifth, for single wind-powered direct drive systems, their operation is entirely dependent on the continuity of natural wind. Drying operations are interrupted when there is no wind or insufficient wind, affecting production efficiency and the consistency of material quality.

[0005] Therefore, there is an urgent need to propose an agricultural and sideline product drying system and method based on wind power direct drive and photovoltaic complementarity suitable for arid areas, so as to solve the problem that existing technologies cannot simultaneously achieve wind power direct drive and photovoltaic complementarity. Summary of the Invention

[0006] In view of the above facts, in order to solve the problem that the prior art cannot simultaneously realize direct wind power drive and photovoltaic complementarity, the present invention designs an agricultural and sideline product drying system and method based on direct wind power drive and photovoltaic complementarity suitable for dry areas.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Option 1: A drying system for agricultural and sideline products based on wind power direct drive and photovoltaic complementarity suitable for arid areas, comprising a first wind turbine, a first gearbox, a first fan, a drying box, an exhaust fan, a second gearbox, a second wind turbine, a third gearbox, an exhaust fan, an air outlet, photovoltaic panels, a generator, an inverter, an energy storage device, a first engine, a first clutch, a second engine, and a second clutch;

[0009] The first output shaft of the first wind turbine is connected to the first gearbox, the second output shaft of the first gearbox is connected to the first clutch, the third output shaft of the first clutch is connected to the first fan, the first fan is located at the air inlet of the drying chamber, the dehumidification fan is located at the dehumidification outlet of the drying chamber, the induced draft fan is located at the air outlet of the drying chamber, the fourth output shaft of the second wind turbine is connected to the second clutch, the fifth output shaft of the second clutch is connected to both the second gearbox and the third gearbox, the sixth output shaft of the second gearbox is connected to the dehumidification fan, the seventh output shaft of the third gearbox is connected to the induced draft fan, the energy storage device is connected to the second engine, and the eighth output shaft of the second engine is connected to the second clutch.

[0010] The photovoltaic panel, generator, inverter, energy storage device, and first engine are connected in sequence, and the ninth output shaft of the first engine is connected to the first clutch.

[0011] Furthermore: the first wind turbine is a horizontal axis wind turbine, and the second wind turbine is a vertical axis wind turbine.

[0012] Furthermore, the drying chamber is equipped with several exhaust fans, which are evenly distributed along the airflow direction on the top of the drying chamber.

[0013] Furthermore, the energy storage device is a battery.

[0014] Option 2: The method for drying agricultural and sideline products based on wind power direct drive and photovoltaic complementarity, suitable for arid areas, is implemented based on the agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity, as described in Option 1. Specifically:

[0015] Step 1: When there is sufficient wind, the first fan is directly driven by the first wind turbine to achieve efficient drying;

[0016] Step 2: The photovoltaic panels convert solar energy into electrical energy, which is then stored in the energy storage device via an inverter;

[0017] Step 3: When the wind is insufficient, the first clutch switches, the energy storage device supplies power to the first engine, and drives the first fan to continue rotating, maintaining continuous dry operation;

[0018] Step 4: The second clutch switches, and the energy storage device supplies power to the second engine, driving the exhaust fan and induced draft fan to continue working and maintain drying efficiency.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The core of this invention lies in using "direct mechanical drive of wind energy" as the main path for drying power, which greatly reduces the energy loss caused by the multi-stage conversion of "wind energy-mechanical energy-electric energy-mechanical energy" in traditional systems. By adopting system-integrated photovoltaic power generation, this comprehensive energy utilization mode of "direct wind energy drive and photovoltaic complementarity" improves the total conversion efficiency of wind and solar resources to effective drying power from the source, realizes the efficient and comprehensive utilization of wind and solar energy, and directly reduces the overall energy consumption of system operation.

[0021] 2. This invention uses ambient temperature drying airflow directly driven by wind energy as the main drying medium. Compared with existing technologies that generally rely on electric heating, coal combustion, or high-temperature heat collection to generate hot air drying, this invention uses a lower and more uniform drying temperature, which can effectively avoid the damage of heat-sensitive vitamins, active ingredients, natural colors and flavor substances in agricultural and sideline products caused by high temperatures, reduce the loss of nutrition and quality during the drying process, and enhance the value of the products.

[0022] 3. This invention effectively overcomes the intermittent problem of relying solely on natural wind power by constructing a hybrid drive architecture that is "primarily driven by direct wind power and supplemented by photovoltaic power generation and energy storage." When there is no wind or insufficient wind, it can seamlessly switch to a mode driven by photovoltaic power generation and battery energy storage, ensuring uninterrupted drying operations. This achieves continuous, efficient, and stable operation of the system under various weather conditions. This design reduces the reliance on large-capacity batteries, and the backup drive is only used to maintain fan operation, making the initial investment and long-term operating electricity costs of the system significantly lower than traditional all-electric heating or heat pump-assisted drying solutions.

[0023] 4. Compared to existing technologies that often involve the complex integration of multiple independent systems such as wind power generation, photovoltaic power generation, solar thermal collection, and heat pumps, this invention, through ingenious design, integrates power transmission and energy conversion functions. The system structure is compact and highly modular. Based on direct drive, it can be upgraded to an all-weather system simply by adding photovoltaic and energy storage, avoiding the use of large independent thermal collection fields or complex heat pump units. This reduces manufacturing costs, installation difficulty, and maintenance costs, and has good technical and economic efficiency and adaptability for widespread application. Attached Figure Description

[0024] Figure 1 This is a general structural diagram of the present invention;

[0025] Figure 2 This is a top view of the dehumidifying fan of the present invention.

[0026] In the diagram: 1-First wind turbine, 2-First gearbox, 3-First fan, 4-Drying box, 5-Exhaust fan, 6-Second gearbox, 7-Second wind turbine, 8-Third gearbox, 9-Exhaust fan, 10-Air outlet, 11-First output shaft, 12-Second output shaft, 13-Sixth output shaft, 14-Seventh output shaft, 15-Fourth output shaft, 16-Photovoltaic panel, 17-Generator, 18-Inverter, 19-Energy storage device, 20-First engine, 21-First clutch, 22-Ninth output shaft, 23-Third output shaft, 24-Second engine, 25-Second clutch, 26-Fifth output shaft, 27-Eighth output shaft. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] The terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1: This example describes an agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity suitable for dry areas, including a first wind turbine 1, a first gearbox 2, a first fan 3, a drying box 4, an exhaust fan 5, a second gearbox 6, a second wind turbine 7, a third gearbox 8, an exhaust fan 9, an air outlet 10, a photovoltaic panel 16, a generator 17, an inverter 18, an energy storage device 19, a first engine 20, a first clutch 21, a second engine 24, and a second clutch 25;

[0032] The first output shaft 11 of the first wind turbine 1 is connected to the first gearbox 2, the second output shaft 12 of the first gearbox 2 is connected to the first clutch 21, the third output shaft 23 of the first clutch 21 is connected to the first fan 3, driving the first fan 3 to rotate, the first fan 3 is located at the air inlet of the drying box 4, the dehumidification fan 5 is located at the dehumidification outlet of the drying box 4, the induced draft fan 9 is located at the air outlet 10 of the drying box 4, the fourth output shaft 15 of the second wind turbine 7 is connected to the second clutch 25, the fifth output shaft 26 of the second clutch 25 is connected to both the second gearbox 6 and the third gearbox 8, the sixth output shaft 13 of the second gearbox 6 is connected to the dehumidification fan 5, the seventh output shaft 14 of the third gearbox 8 is connected to the induced draft fan 9, the energy storage device 19 is connected to the second engine 24, and the eighth output shaft 27 of the second engine 24 is connected to the second clutch 25.

[0033] The photovoltaic panel 16, generator 17, inverter 18, energy storage device 19, and first engine 20 are connected in sequence, and the ninth output shaft 22 of the first engine 20 is connected to the first clutch 21.

[0034] More specifically: the first wind turbine 1 is a horizontal axis wind turbine, and the second wind turbine 7 is a vertical axis wind turbine.

[0035] More specifically: Several dehumidification fans 5 are installed inside the drying chamber 4. The dehumidification fans 5 are evenly distributed along the airflow direction on the top of the drying chamber 4 to form a forced dehumidification airflow.

[0036] More specifically: the dehumidification fan 5 works in conjunction with the induced draft fan 9 to form a unidirectional forced dehumidification airflow from the air inlet to the air outlet 10 inside the drying chamber 4.

[0037] More specifically: the energy storage device 19 is a battery.

[0038] More specifically: The workflow is as follows: When there is a windy environment, the natural wind drives the first fan 1 to rotate. The mechanical energy is adjusted by the first gearbox 2 and connected to the first clutch 21, which drives the first fan 3 to rotate. The first fan 3 draws in air from the outside to form a normal temperature dry airflow, which is sent into the drying box 4 to dry the material.

[0039] Natural wind drives the second wind turbine 7 to rotate, and the power is adjusted by the second gearbox 6 and the third gearbox 8 respectively to drive the dehumidification fan 5 and the induced draft fan 9.

[0040] Meanwhile, under sunlight conditions, the photovoltaic panel 16 absorbs solar energy and generates electricity continuously through the generator 17. The electrical energy is then processed by the inverter 18 and stored in the energy storage device 19.

[0041] When the wind power is insufficient to directly drive the first wind turbine 1 and the second wind turbine 7, the energy storage device 19 supplies power to the first engine 20. The first engine 20 is connected to the first clutch 21 to drive the fan 3 to continue running, ensuring that the dry airflow is not interrupted.

[0042] Switching to electric drive mode via the second clutch 25, the energy storage device 19 supplies power to the second engine 24. The second engine 24 is connected to the second clutch 25, providing power to the second gearbox 6 and the third gearbox 8. After adjustment, the power drives the exhaust fan 5 and the induced draft fan 9 to continue operating. The exhaust fan 5 actively extracts the high-humidity air from the drying chamber 4, and the induced draft fan 9 provides suction at the exhaust end. Together, they establish a stable, unidirectional airflow from the air inlet to the air outlet 10 inside the drying chamber 4. This synergistic effect of "blowing-exhausting-inducing" effectively improves the uniformity and efficiency of drying.

[0043] Example 2: The method for drying agricultural and sideline products based on wind power direct drive and photovoltaic complementarity, suitable for arid areas, is implemented based on the agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity, suitable for arid areas, described in Example 1. Specifically, it is as follows:

[0044] Step 1: When there is sufficient wind, the first fan 3 is directly driven by the first wind turbine 1 to achieve efficient drying;

[0045] Step 2: The photovoltaic panel 16 converts solar energy into electrical energy, which is then stored in the energy storage device 19 via the inverter 18;

[0046] Step 3: When the wind is insufficient, the first clutch 21 switches, and the energy storage device 19 supplies power to the first engine 20, driving the first fan 3 to continue rotating and maintaining continuous dry operation;

[0047] Step 4: The second clutch 25 switches, and the energy storage device 19 supplies power to the second engine 24, driving the exhaust fan 5 and the induced draft fan 9 to continue working and maintain drying efficiency.

[0048] Example 3: Analysis of System Economic and Environmental Benefits:

[0049] This embodiment uses the agricultural and sideline product processing center in Dabancheng wind zone (a typical dry area) in Xinjiang as a model. It has a single batch processing capacity of 20 tons, a drying time of 120 hours, and operates 54 batches per year.

[0050] Process differences: This system uses forced ventilation drying at room temperature (20℃) (no heating energy consumption), while traditional solutions use high-temperature hot air drying at 60℃ (requiring additional heating). The economic and environmental benefits of this invention are quantitatively evaluated through calculation and comparison.

[0051] I. Basic parameters and air volume design are shown in Table 1:

[0052] Table 1

[0053]

[0054] 1. Calculation of air volume, wind turbine power, and mechanical energy consumption per batch

[0055] (1) Core Formula

[0056] Air volume Q = A·v;

[0057] Where: v is the design wind speed;

[0058] Wind turbine shaft power P=QH / η 风力机 ;

[0059] Where: H is the total system head;

[0060] The total mechanical energy consumption of a single batch of wind turbines is E = P × ventilation ratio × drying time;

[0061] (2) The system of the present invention

[0062] Design wind speed v1 = 3 m / s;

[0063] Total pressure head H1 = 1200 Pa;

[0064] The fresh air replenishment factor is 3;

[0065] Q1 = 7.2 × 3 = 21.6m 3 / s;

[0066] P1=(21.6×1200) / 0.7≈37.03kW;

[0067] E 本机 =37.03×3×120=13330.8kW (75% wind power direct drive + 25% photovoltaic power supply, zero external power purchase);

[0068] (3) Traditional hot air drying

[0069] Design wind speed v2 = 0.5 m / s;

[0070] Total pressure head H2 = 800 Pa;

[0071] The fresh air replenishment factor is 2;

[0072] Q2 = 7.2 × 0.5 = 3.6m 3 / s;

[0073] P2=(3.6×800) / 0.7≈4.11kW;

[0074] E 机热 =4.11×2×120=986.4kW;

[0075] Corresponding power consumption E 风力机电 =986.4 / 0.92≈1072kWh, motor efficiency 92%;

[0076] II: Four Traditional Drying Methods

[0077] All processes utilize high-temperature hot air, resulting in high energy consumption, high investment, high emissions, and poor product quality with no additional revenue. The core performance indicators for a single batch are:

[0078] 1. Traditional electric heating

[0079] Operating cost C 运1 =E 电总 ×45%≈10154 yuan / batch, high power consumption, high carbon emissions (13.54 tons / batch), high temperature damages the nutrition of agricultural products;

[0080] 2. Traditional coal-fired hot air

[0081] Operating cost C 运2 =m 煤 ×800+E 风力机电 ×45%=3.945×800+1072×0.45≈3638.5 yuan / batch, coal combustion produces pollution and carbon emissions (10.90 tons / batch), and the product quality is low;

[0082] 3. Pure photovoltaic drive

[0083] Maintenance fee C 维1 =18.39 million × 2% ÷ 54 ≈ 6809 yuan / batch, zero emissions but extremely high investment (18.39 million yuan), installed capacity of 6129kWp, cannot be promoted in small and medium-sized scenarios;

[0084] 4. Traditional wind power - electric drive

[0085] Maintenance fee C 维2 =6.27 million × 4% ÷ 54 ≈ 4644 yuan / batch, zero emissions but high investment (6.27 million yuan), long energy conversion path, and low overall efficiency;

[0086] Three: The System of the Invention

[0087] Core configuration:

[0088] A 270kW horizontal axis wind turbine + 905kWp photovoltaic and energy storage system requires a total investment of only 3 million yuan (far lower than pure photovoltaic / traditional wind power). It features ambient temperature ventilation, zero heating energy consumption, zero external power purchase, and zero carbon emissions. With its unique quality premium and carbon emission reduction benefits, it offers the best overall benefits.

[0089] 1. Operation and maintenance costs

[0090] Single batch maintenance fee C 维3=3 million × 5% ÷ 54 ≈ 2778 yuan / batch (no operating costs, only equipment maintenance costs are required);

[0091] 2. Exclusive additional benefits for single batches

[0092] Quality premium:

[0093] Retaining nutrients at room temperature increases price by 30%, C 溢 =20000kg × 10 yuan / kg × 30% = 60000 yuan / batch;

[0094] Benefits of carbon emission reduction:

[0095] Compared to zero-emission coal-fired solutions, C 碳 =Emission reduction × 50 = 10.90 tons × 50 yuan / ton = 545 yuan / batch;

[0096] 3. Return on Investment

[0097] Cost savings per batch:

[0098] ΔC=C 运2 -C 维3 = Yuan;

[0099] Single-batch overall net income:

[0100] C 单净 =ΔC+C 溢 +C 碳 = Yuan;

[0101] Annual net income:

[0102] C 年净 =C 单净 ×54= Ten thousand yuan;

[0103] Static payback period:

[0104] T = Total Investment ÷ C 年净 =3 million ÷ 3.316 million ≈ 10.9 months;

[0105] 4. Environmental benefits

[0106] Zero carbon emissions throughout the entire process, reducing CO2 emissions annually:

[0107] Compared to coal tons, compared to electric heating Tons, meeting the requirements for clean energy.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; as long as there is no structural conflict, the various features in the specific embodiments disclosed in this application can be combined with each other in any way, and will not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

[0109] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drying system for agricultural and sideline products based on wind power direct drive and photovoltaic complementarity, suitable for arid regions, characterized in that, Includes a first wind turbine (1), a first gearbox (2), a first fan (3), a drying box (4), an exhaust fan (5), a second gearbox (6), a second wind turbine (7), a third gearbox (8), an induced draft fan (9), an air outlet (10), a photovoltaic panel (16), a generator (17), an inverter (18), an energy storage device (19), a first engine (20), a first clutch (21), a second engine (24), and a second clutch (25); The first output shaft (11) of the first wind turbine (1) is connected to the first gearbox (2), the second output shaft (12) of the first gearbox (2) is connected to the first clutch (21), the third output shaft (23) of the first clutch (21) is connected to the first fan (3), the first fan (3) is located at the air inlet of the drying box (4), the dehumidification fan (5) is located at the dehumidification outlet of the drying box (4), and the induced draft fan (9) is located at the air outlet (10) of the drying box (4). The second wind turbine (7) has a first output shaft (11) connected to the first gearbox (2), the second output shaft (12) of the first gearbox (2) is connected to the first clutch (21), the third output shaft (23) of the first clutch (21) is connected to the first fan (3), the first fan (3) is located at the air inlet of the drying box (4), the second dehumidification fan (5) is located at the dehumidification outlet of the drying box (4), and the third output shaft (23) of the second wind turbine (7) is connected to the first fan (3). The fourth output shaft (15) is connected to the second clutch (25). The fifth output shaft (26) of the second clutch (25) is connected to both the second gearbox (6) and the third gearbox (8). The sixth output shaft (13) of the second gearbox (6) is connected to the exhaust fan (5). The seventh output shaft (14) of the third gearbox (8) is connected to the induced draft fan (9). The energy storage device (19) is connected to the second engine (24). The eighth output shaft (27) of the second engine (24) is connected to the second clutch (25). The photovoltaic panel (16), generator (17), inverter (18), energy storage device (19), and first engine (20) are connected in sequence, and the ninth output shaft (22) of the first engine (20) is connected to the first clutch (21).

2. The agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity suitable for arid areas according to claim 1, characterized in that, The first wind turbine (1) is a horizontal axis wind turbine, and the second wind turbine (7) is a vertical axis wind turbine.

3. The agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity suitable for arid areas according to claim 1, characterized in that, The drying chamber (4) is equipped with several exhaust fans (5), which are evenly distributed on the top of the drying chamber (4) along the airflow direction.

4. The agricultural and sideline product drying system based on wind power direct drive and photovoltaic complementarity suitable for arid areas according to claim 1, characterized in that, The energy storage device (19) is a battery.

5. A method for drying agricultural and sideline products in arid regions based on wind power direct drive and photovoltaic complementarity, implemented using the agricultural and sideline product drying system for arid regions based on wind power direct drive and photovoltaic complementarity as described in claim 1, characterized in that... Specifically: Step 1: When there is sufficient wind, the first wind turbine (1) directly drives the first fan (3) to achieve efficient drying; Step 2: The photovoltaic panel (16) converts solar energy into electrical energy, which is then stored in the energy storage device (19) via the inverter (18). Step 3: When the wind power is insufficient, the first clutch (21) switches, and the energy storage device (19) supplies power to the first engine (20), driving the first fan (3) to continue rotating and maintain continuous drying operation; Step 4: The second clutch (25) switches, and the energy storage device (19) supplies power to the second engine (24), driving the dehumidification fan (5) and the induced draft fan (9) to continue working and maintain the drying efficiency.

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