Wind turbine with ice-melting function

Abstract

To provide a wind turbine with an ice-melting function. [Solution] An ice recovery platform is installed on the wind turbine tower, and the wind turbine is equipped with a radar sensor module, a zone-specific heating module, and an intelligent control module. By combining the detection of the ice layer thickness on the blade surface by the radar sensor module and the intelligent control of the zone-specific heating module, uniform heating and efficient removal of the ice layer are achieved, and the falling ice is collected by the ice recovery platform. This not only avoids safety risks associated with ice layer detachment, but also significantly improves the operational stability and power generation efficiency of the wind turbine. The accuracy of de-icing is improved by the accurate detection of ice layer thickness by the radar sensor module, resource waste is avoided by the zone-specific heating module applying the appropriate amount of heat according to the ice layer thickness in different areas, and human intervention is reduced by realizing automatic de-icing with the intelligent control module.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbines, and particularly relates to a wind turbine with an ice melting function.

Background Art

[0002] A conventional wind turbine is a device that converts wind energy into electrical energy. Its basic principle is that windmill blades capture the energy of the wind and drive a generator. When the wind passes through the blades, the airflow distribution on the blades becomes non-uniform, generating lift, rotating the blades, and the rotation of the blades drives the rotor inside the generator, cutting the magnetic field lines to generate an electric current, thereby converting mechanical energy into electrical energy.

[0003] However, conventional wind turbines often cannot effectively cope with the problem of ice formation on the blade surface in a low-temperature environment. When an ice layer forms on the blade surface, the weight of the blade increases significantly, not only affecting the balance of the windmill but also reducing the power generation efficiency. Moreover, as a more serious problem, conventional wind turbines lack effective ice melting means, and when the ice layer melts, ice blocks may fall disorderly, posing a significant safety risk to ground facilities and personnel.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention aims to provide a wind turbine with an ice melting function to solve at least one of the above technical problems.

Means for Solving the Problems

[0005] To solve the above technical problems, the present invention discloses a wind turbine with an ice melting function. The wind turbine includes a base, a wind tower is provided on the base, a nacelle is attached to the wind tower, blades are attached to the nacelle, a power generation module is provided inside the nacelle, and a residual ice collection platform is provided on the wind tower. The wind turbine comprises a radar sensor module mounted on the front end of the nacelle for detecting the ice thickness in each area of ​​the blade, zone-specific heating modules installed in multiple heating zones on the blade for heating the ice in the corresponding heating zones, and an intelligent control module for controlling the operation of the zone-specific heating modules based on the detection data of the radar sensor module.

[0006] Preferably, the zone-specific heating module is a multi-layer composite resistance structure, the multi-layer composite resistance structure includes a first protective layer, a second protective layer, and a metal alloy resistance layer disposed between the first and second protective layers, the second protective layer being attached to the surface of the blade.

[0007] Preferably, the first and second protective layers are made of one of the following: a polyimide film layer, a ceramicized silicone rubber layer, or a modified epoxy glass cloth layer, with a thickness of 0.1 mm to 0.3 mm. The metal alloy resistive layer is made of one of the following: a nichrome alloy thin film, an iron-chromium-aluminum alloy wire mesh, or a titanium-aluminum-vanadium-based shape memory alloy thin film, fabricated by forming a specific topology circuit using a photolithography or laser engraving process, with a resistance value of 2 to 8 Ω / m². 2 I'll do that.

[0008] Preferably, the first protective layer and the second protective layer are vacuum laminated together using a high-temperature resistant epoxy adhesive to form a packaged body, and silver paste printed electrodes are provided on the edges of the packaged body. The spacing of the silver paste printed electrodes is distributed in a gradient along the chord direction of the blade, thereby achieving zone-specific temperature control.

[0009] Preferably, the radar sensor module includes a radar signal transmitting unit for transmitting radar signals toward the surface of the blade and an echo signal receiving unit for receiving radar signals reflected from the surface of the blade.

[0010] Preferably, the intelligent control module for controlling the operation of zone-specific heating modules based on detection data from a radar sensor module includes: a Doppler matrix construction unit for generating a difference frequency signal by frequency mixing the transmitted signal and echo signal of the radar sensor module, performing a fast Fourier transform on the difference frequency signal to obtain distance bins and velocity bins, and constructing a Doppler matrix based on the distance bins and velocity bins; an ice formation location identification unit for extracting features from the Doppler matrix, obtaining anomalous regions in the Doppler matrix, quantifying the ice formation thickness based on the frequency deviation and scattering intensity of the anomalous regions, and mapping it to the blade surface to generate an ice formation location heat map; a thermodynamic calculation unit for calculating the heating output of zone-specific heating modules corresponding to each heating zone based on the ice formation location heat map and the ice formation thickness corresponding to each location in the ice formation location heat map; and a heating control unit for controlling the operation of zone-specific heating modules based on the calculation results of the heating output of zone-specific heating modules corresponding to each heating zone.

[0011] Preferably, a fast Fourier transform is performed on the difference frequency signal to obtain distance bins and velocity bins, and a Doppler matrix is ​​constructed based on the distance bins and velocity bins. This involves performing a fast Fourier transform on the difference frequency signal within each pulse repetition period of the difference frequency signal, and obtaining the distance bin using the following equation: JPEG0007862667000002.jpg3064 Here, JPEG0007862667000003.jpg88 is the distance bin, JPEG0007862667000004.jpg1112 is at the speed of light, JPEG0007862667000005.jpg99 is the difference frequency between the transmitted signal and the echo signal of the radar sensor module. Since JPEG0007862667000006.jpg98 is a frequency modulation slope, and a Fast Fourier Transform is performed on the data of the same distance bin within multiple pulse repetition periods of the difference frequency signal, the velocity bin is obtained using the following equation: JPEG0007862667000007.jpg3264 Here, JPEG0007862667000008.jpg87 is the speed bin, JPEG0007862667000009.jpg99 is the wavelength of the signal transmitted by the radar sensor module. JPEG0007862667000010.jpg98 represents the frequency deviation of the echo signal from the radar sensor module relative to the transmitted signal, Based on the distance bin and velocity bin, we construct the following Doppler matrix: JPEG0007862667000011.jpg2259JPEG0007862667000012.jpg1295Here, JPEG0007862667000013.jpg88 is a Doppler matrix constructed based on distance bins and velocity bins. JPEG0007862667000014.jpg1012 is distance bin 1 and velocity bin This is the signal energy in JPEG0007862667000015.jpg86. JPEG0007862667000016.jpg913 is distance bin 1 and velocity bin This is the signal energy in JPEG0007862667000017.jpg77. JPEG0007862667000018.jpg1012 is in distance bin M and speed bin This is the signal energy in JPEG0007862667000019.jpg86. JPEG0007862667000020.jpg1013 shows distance bin M and velocity bin This is the signal energy in JPEG0007862667000021.jpg77. JPEG0007862667000022.jpg918 is a distance bin k and a velocity bin. This is a time-series sample of the difference frequency signal in JPEG0007862667000023.jpg97, where K is the number of distance bins, L is the number of velocity bins, and e represents the base of the natural logarithm, with its value being 2.71. The image JPEG0007862667000024.jpg107 represents pi, and its value is 3.14. This includes the idea of ​​something.

[0012] Preferably, based on the ice formation location heat map and the ice formation thickness corresponding to each location on the ice formation location heat map, the heating output of the zone-specific heating module corresponding to each heating zone is calculated as follows: JPEG0007862667000025.jpg1843 Here, JPEG0007862667000026.jpg109 is the heating output of the zone-specific heating module corresponding to the i-th heating zone. JPEG0007862667000027.jpg88 represents the theoretical heating power required to melt a unit ice thickness and unit area. Let's name it JPEG0007862667000028.jpg2887. JPEG0007862667000029.jpg98 shows the heating efficiency of the zone-specific heating modules, which is set at 85%. JPEG0007862667000030.jpg99 is the ice thickness at position j of the i-th heating zone. JPEG0007862667000031.jpg78 is the number of ice formation thicknesses in the i-th heating zone. JPEG0007862667000032.jpg99 represents the area of ​​the i-th heating zone. This includes calculating using [a specific method / tool].

[0013] Preferably, the residual ice collection platform has a collection platform mounting ring, the collection platform mounting ring is connected to the wind turbine by bolts, the electric drive gear is rotatably connected within the collection platform mounting ring, the collection platform body is slidably connected within the collection platform mounting ring, the arched rack is fixedly connected to the collection platform body, the arched rack and the electric drive gear mesh with each other, a plastic collection tank is provided within the collection platform body, a melting ice heating layer is provided on the inner wall of the plastic collection tank, a drain hole is provided within the plastic collection tank, the drain hole is connected to the collected water tank via a hose, and the collected water tank is connected to the cooling system of the nacelle.

Advantages of the Invention

[0014] The present invention realizes uniform heating and efficient removal of the ice layer through the combination of detection of the ice layer thickness on the blade surface by the radar sensor module and intelligent control of the zone-by-zone heating module, and further collects the residual ice that falls by means of the residual ice collection platform. Thereby, not only can the safety risks associated with ice layer shedding be avoided, but also the operating stability and power generation efficiency of the wind turbine can be significantly improved. The present invention provides a safer and more efficient solution for the wind power generation industry. The accurate detection of the ice layer thickness by the radar sensor module improves the de-icing accuracy, the zone-by-zone heating module avoids waste of resources by applying appropriate amounts of heat according to the ice layer thickness in different regions, and the intelligent control module reduces human intervention by realizing automatic de-icing, thereby improving the operating efficiency.

Brief Description of the Drawings

[0015] The drawings are for the purpose of deepening the understanding of the present invention, form a part of the specification, and are used together with the embodiments of the present invention to explain the present invention, and do not limit the present invention. [Figure 1] It is a schematic diagram showing the overall structure of a wind turbine having an ice melting function according to the present invention. [Figure 2] It is a cross-sectional view of the overall structure according to the present invention. [Figure 3] It is an enlarged view of location A in FIG. 2 according to the present invention. [Modes for carrying out the invention]

[0016] The following describes preferred embodiments of the present invention with reference to the drawings. Please understand that these preferred embodiments are provided for the purpose of explaining and illustrating the present invention, and are not intended to limit it. Furthermore, the terms "first," "second," etc., used in this invention are for illustrative purposes only and do not indicate order or priority, nor do they limit the invention. They are solely for distinguishing components or operations described using the same technical terminology and should not be interpreted as indicating relative importance or the number of implied technical features. Accordingly, features limited by "first," "second," etc., shall explicitly or implicitly include at least one such feature. Moreover, while the technical configurations and technical features between each embodiment can be combined with each other, this is contingent on them being feasible to those skilled in the art. If a combination of technical configurations is mutually contradictory or impossible to achieve, such a combination shall be deemed nonexistent and shall not be included in the claims of this invention. The present invention provides the following embodiments. [Examples]

[0017] As shown in Figures 1 to 3, an embodiment of the present invention provides a wind turbine with an ice-melting function. The wind turbine comprises a base (1), a wind tower (2) is mounted on the base (1), a nacelle (3) is attached to the wind tower (2), blades (4) are attached to the nacelle (3), a power generation module is provided inside the nacelle (3), and an ice recovery platform (5) is provided on the wind tower (2). The wind turbine includes a radar sensor module mounted on the front end of the nacelle (3) for detecting the ice thickness in each area of ​​the blade (4), zone-specific heating modules installed in multiple heating zones on the blade (4) for heating the ice in the corresponding heating zones, and an intelligent control module for controlling the operation of the zone-specific heating modules based on the detection data from the radar sensor module.

[0018] Preferably, the radar sensor module includes a radar signal transmitting unit for transmitting radar signals toward the surface of the blade (4) and an echo signal receiving unit for receiving radar signals reflected from the surface of the blade (4).

[0019] Preferably, the heating zone is divided into 12 sections, with 3 sections on the front edge, 4 sections on the top surface, 4 sections on the bottom surface, and 1 section on the rear edge. The blade (4) is divided along its length into a wing root region (0-20% chord position), a central region (20-70% chord position), and a blade tip region (70-100% chord position). Here, one of the three areas on the front edge occupies 0-30% of the front edge of the wing root in the wingspan direction and 0-10% in the chord direction. Another of the three areas on the front edge occupies 30-70% of the front edge of the mid-edge in the wingspan direction and 0-15% in the chord direction. A third of the three areas on the front edge occupies 70-100% of the front edge of the blade tip in the wingspan direction and 0-8% in the chord direction. One of the four areas on the upper surface occupies 0-25% of the wing span in the upper surface and 10-40% in the chord direction on the upper surface of the wing root. Another of the four areas on the upper surface occupies 25-50% of the wing span in the upper surface of the central forward section and 15-45% in the chord direction on the upper surface of the chord. Another of the four areas on the upper surface occupies 50-75% of the wing span in the upper surface of the central rear section and 20-50% in the chord direction on the upper surface of the blade tip. One of the four areas on the underside is located on the underside of the wing root, occupying 0-30% in the wingspan direction and 5-35% in the chord direction. Another of the four areas on the underside is located on the central front underside, occupying 30-60% in the wingspan direction and 10-40% in the chord direction. Another of the four areas on the underside is located on the central rear underside, occupying 60-85% in the wingspan direction and 15-45% in the chord direction. A third of the four areas on the underside is located on the blade tip underside, occupying 85-100% in the wingspan direction and 5-30% in the chord direction. One area on the rear edge occupies 0-100% of the total wingspan in the wingspan direction and 90-100% in the chord direction.

[0020] The principle and effects of the above proposed technology are as follows: In this invention, a radar sensor module transmits a radar signal and receives an echo signal reflected from the surface of the blade (4). An intelligent control module analyzes the thickness of the ice layer in different areas of the blade (4) based on the reflection characteristics of the signal. A zone-specific heating module applies heat to different heating zones of the blade (4) according to commands from the intelligent control module to heat and melt the ice layer. The intelligent control module processes data from the radar sensor module in real time and dynamically adjusts the operating state of the zone-specific heating module. As a result, highly efficient de-icing is achieved.

[0021] This invention achieves uniform heating and efficient removal of the ice layer by combining detection of the ice layer thickness on the blade (4) surface using a radar sensor module and intelligent control of zone-specific heating modules, and further collects the remaining ice that falls using an ice recovery platform (5). This not only avoids safety risks associated with ice layer detachment but also significantly improves the operational stability and power generation efficiency of the wind turbine. This invention provides a safer and more efficient solution for the wind power generation industry. Accurate detection of ice layer thickness by the radar sensor module improves de-icing accuracy, zone-specific heating modules avoid resource waste by applying the appropriate amount of heat according to the ice layer thickness in different areas, and automatic de-icing by the intelligent control module reduces human intervention and improves operational efficiency. [Examples]

[0022] Based on Example 1, the zone-specific heating module has a multi-layer composite resistance structure, the multi-layer composite resistance structure includes a first protective layer, a second protective layer, and a metal alloy resistance layer disposed between the first and second protective layers, the second protective layer being attached to the surface of the blade (4).

[0023] The principle and effects of the above-described technology are as follows: The multi-layer composite resistor structure of the present invention consists of a first protective layer, a second protective layer, and a metal alloy resistor layer. The metal alloy resistor layer generates heat when current is passed through it, and the first and second protective layers provide protection, preventing damage to the metal alloy resistor layer from the external environment. The metal alloy resistor layer generates a uniform heat field through the Joule effect, efficiently heating and melting the ice layer. This multi-layer composite resistor structure has excellent mechanical strength and electrical insulation performance, and the uniform heat field distribution ensures consistent de-icing effects, thus avoiding localized overheating. [Examples]

[0024] Based on Example 1, the first and second protective layers are made of one of the following: a polyimide film layer, a ceramicized silicone rubber layer, or a modified epoxy glass cloth layer, with a thickness of 0.1 mm to 0.3 mm. The metal alloy resistive layer is made of one of the following: a nichrome alloy thin film, an iron-chromium-aluminum alloy wire mesh, or a titanium-aluminum-vanadium-based shape memory alloy thin film, fabricated by forming a specific topology circuit using a photolithography or laser engraving process, with a resistance value of 2 to 8 Ω / m². 2 I'll do that.

[0025] The principle and effects of the above proposed technology are as follows: The first and second protective layers combine both electrical insulation and mechanical protection functions, and the metal alloy resistive layer generates a uniform heat field through the Joule effect when current is applied. Its heat conversion efficiency reaches over 98%, and to enhance the heat conduction performance, a 0.05 mm thick aluminum oxide heat conductive medium layer can be composited onto the surface of the metal alloy resistive layer. The selection of high-performance materials improves the overall durability and reliability of the structure, while specific topology circuit design ensures precise heating and increased energy efficiency. The aluminum oxide thermal conductive medium layer enhances thermal conductivity and accelerates the melting rate of the ice layer. [Examples]

[0026] Based on Example 2, the first protective layer and the second protective layer are vacuum laminated using a high-temperature resistant epoxy adhesive to form a packaged body. Silver paste printed electrodes are provided on the edges of the packaged body, and the spacing of the silver paste printed electrodes is distributed in a gradient along the chord direction of the blade (4), thereby achieving zone-specific temperature control.

[0027] The principle and effect of the above proposed technology are as follows: The outermost layer of the multi-layer composite resistor structure is spray-coated with a 0.2 mm thick polyurethane / silicon carbide composite coating. After UV curing, this coating forms an erosion-resistant surface that can withstand the impact of sand grains carried at a wind speed of 20 m / s, and its performance is verified by the ASTM D968 sand drop test. A PT100 thin-film temperature sensor is integrated into the multi-layer composite resistor structure, and in conjunction with the pitch control system, high-precision temperature control is achieved in the range of 50 to 80°C. In the packaging process of the first and second protective layers, a pressure of 0.5 to 1.2 MPa is applied for 30 minutes under conditions of 60 to 80°C to ensure that the three-layer structure conforms to the IP67 protection level. In this invention, the response speed is improved by 40% by using a metal alloy resistance layer and direct heating, reaching the operating temperature within 3 seconds. The multi-layer composite resistance structure achieves a shear strength of 120 MPa, meeting the bending deformation requirements of the blade (4). The design of zone-specific heating modules reduces energy consumption by 30%, and the PT100 thin-film temperature sensor prevents delamination due to localized overheating. [Examples]

[0028] Based on Example 1, the intelligent control module for controlling the operation of zone-specific heating modules based on detection data from a radar sensor module includes: a Doppler matrix construction unit for generating a difference frequency signal by frequency mixing the transmitted signal and echo signal of the radar sensor module, performing a fast Fourier transform on the difference frequency signal to obtain distance bins and velocity bins, and constructing a Doppler matrix based on the distance bins and velocity bins; an ice formation location identification unit for extracting features from the Doppler matrix, obtaining anomalous regions in the Doppler matrix, quantifying the ice formation thickness based on the frequency deviation and scattering intensity of the anomalous regions, and mapping it to the surface of the blade (4) to generate an ice formation location heat map; a thermodynamic calculation unit for calculating the heating output of the zone-specific heating module corresponding to each heating zone based on the ice formation location heat map and the ice formation thickness corresponding to each location in the ice formation location heat map; and a heating control unit for controlling the operation of the zone-specific heating module based on the calculation results of the heating output of the zone-specific heating module corresponding to each heating zone.

[0029] The principle and effects of the above proposed technology are as follows: The Doppler matrix construction unit in this invention constructs a Doppler matrix by frequency mixing the transmitted signal and echo signal of the radar sensor module and performing a fast Fourier transform to generate distance bins and velocity bins. The ice formation location identification unit extracts abnormal regions within the Doppler matrix, quantifies the ice formation thickness, and generates a heat map of the ice formation locations. The thermodynamic calculation unit calculates the heating output of each heating zone based on the heat map of the ice formation locations, and the heating control unit controls the operation of the zone-specific heating modules based on the calculation results. The Doppler matrix allows for precise identification of ice formation areas and their thickness, improving localization accuracy. This enables dynamic heating output adjustment, optimizing energy use, reducing power consumption, and achieving automated and intelligent de-icing control, thereby improving system reliability. [Examples]

[0030] Based on Example 5, performing a Fast Fourier Transform on the difference frequency signal to obtain distance bins and velocity bins, and constructing a Doppler matrix based on the distance bins and velocity bins, involves performing a Fast Fourier Transform on the difference frequency signal within each pulse repetition period of the difference frequency signal, and obtaining the distance bin using the following equation: JPEG0007862667000033.jpg3064 Here, JPEG0007862667000034.jpg88 is the distance bin, JPEG0007862667000035.jpg1112 is at the speed of light, JPEG0007862667000036.jpg99 is the difference frequency between the transmitted signal and the echo signal of the radar sensor module. Since JPEG0007862667000037.jpg98 is a frequency modulation slope, and a Fast Fourier Transform is performed on the data of the same distance bin within multiple pulse repetition periods of the difference frequency signal, the velocity bin is obtained using the following equation: JPEG0007862667000038.jpg3264 Here, JPEG0007862667000039.jpg87 is the speed bin, JPEG0007862667000040.jpg99 is the wavelength of the transmission signal from the radar sensor module. JPEG0007862667000041.jpg98 represents the frequency deviation of the echo signal from the radar sensor module relative to the transmitted signal, Based on the distance bin and velocity bin, we construct the following Doppler matrix: JPEG0007862667000042.jpg2259JPEG0007862667000043.jpg1295Here, JPEG0007862667000044.jpg88 is a Doppler matrix constructed based on distance bins and velocity bins. JPEG0007862667000045.jpg1012 is distance bin 1 and velocity bin This is the signal energy in JPEG0007862667000046.jpg86, JPEG0007862667000047.jpg913 is distance bin 1 and velocity bin This is the signal energy in JPEG0007862667000048.jpg77. JPEG0007862667000049.jpg1012 is in distance bin M and speed bin This is the signal energy in JPEG0007862667000050.jpg86. JPEG0007862667000051.jpg1013 shows distance bin M and velocity bin This is the signal energy in JPEG0007862667000052.jpg77. JPEG0007862667000053.jpg918 is a distance bin k and a velocity bin. This is a time-series sample of the difference frequency signal in JPEG0007862667000054.jpg97, where K is the number of distance bins, L is the number of velocity bins, and e represents the base of the natural logarithm, with its value being 2.71. The image JPEG0007862667000055.jpg107 represents pi, and its value is 3.14. This includes the idea of ​​something.

[0031] Based on the ice formation location heatmap and the ice formation thickness corresponding to each location on the ice formation location heatmap, the heating output of the zone-specific heating module corresponding to each heating zone can be calculated using the following formula: JPEG0007862667000056.jpg1843 Here, JPEG0007862667000057.jpg109 is the heating output of the zone-specific heating module corresponding to the i-th heating zone. JPEG0007862667000058.jpg88 represents the theoretical heating power required to melt a unit ice thickness and unit area. Let's name it JPEG0007862667000059.jpg2887. JPEG0007862667000060.jpg98 shows the heating efficiency of the zone-specific heating modules, which is set at 85%. JPEG0007862667000061.jpg99 is the ice thickness at position j of the i-th heating zone. JPEG0007862667000062.jpg78 is the number of ice formation thicknesses in the i-th heating zone. JPEG0007862667000063.jpg99 represents the area of ​​the i-th heating zone. This includes calculating using [a specific method / tool].

[0032] The principles and effects of the above proposed technology are as follows: Fast Fourier Transform improves data processing speed and accuracy, and dynamic adjustment of heating output avoids localized overheating and underheating. In addition, zone-specific heating improves energy utilization efficiency and reduces power consumption. [Examples]

[0033] Based on Embodiment 1, the ice recovery platform (5) is equipped with a recovery platform mounting ring (50), the recovery platform mounting ring (50) is connected to the wind turbine tower (2) by bolts, an electric drive gear (51) is rotatably connected inside the recovery platform mounting ring (50), the recovery platform body (52) is slidably connected inside the recovery platform mounting ring (50), an arch-shaped rack (53) is fixedly connected to the recovery platform body (52), the arch-shaped rack (53) and the electric drive gear (51) mesh with each other, a plastic collection tank (54) is provided inside the recovery platform body (52), an ice melting heating layer is provided on the inner wall of the plastic collection tank (54), a drain hole (55) is provided inside the plastic collection tank (54), the drain hole (55) is connected to a collection water tank via a hose, and the collection water tank is connected to the cooling system of the nacelle (3).

[0034] The principle and effects of the above proposed technology are as follows: The ice recovery platform (5) rotates the recovery platform body (52) through the engagement of an electric drive gear (51) and an arch-shaped rack (53), thereby ensuring that the recovery platform body (52) is always positioned directly below the blade (4) during ice melting. This allows for accurate capture of ice chunks falling during the ice melting process. The ice chunks enter the plastic collection tank (54) by free fall, melt in the ice melting heating layer, and are then introduced into the collection water tank via the drain hole (55) for storage. The collection water tank is connected to the cooling system of the nacelle (3), thereby realizing the recycling of water resources.

[0035] Clearly, those skilled in the art can make any modifications and variations to the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations of the invention fall within the scope of the claims of the present invention and the equivalent art, the present invention is intended to encompass these modifications and variations as well. [Explanation of Symbols]

[0036] 1: Base; 2: Wind turbine tower; 3: Nacelle; 4: Blades; 5: Ice recovery platform; 50: Recovery platform mounting ring; 51: Electric drive gear; 52: Recovery platform body; 53: Arch-shaped rack; 54: Plastic collection tank; 55: Drain hole

Claims

1. A wind turbine with an ice-melting function, The wind turbine comprises a base (1), a wind tower (2) mounted on the base (1), a nacelle (3) attached to the wind tower (2), blades (4) attached to the nacelle (3), a power generation module provided inside the nacelle (3), and an ice recovery platform (5) provided on the wind tower (2). The aforementioned wind turbine generator, A radar sensor module is attached to the front end of the nacelle (3) for detecting the ice thickness in each area of ​​the blade (4), A zone-specific heating module is installed in a plurality of heating zones provided on the blade (4) for heating ice formation in the corresponding heating zone, The system includes an intelligent control module for controlling the operation of the zone-specific heating modules based on detection data from the radar sensor module, The ice recovery platform (5) is equipped with a recovery platform mounting ring (50), the recovery platform mounting ring (50) is connected to the wind turbine tower (2) by bolts, an electric drive gear (51) is rotatably connected inside the recovery platform mounting ring (50), the recovery platform body (52) is slidably connected inside the recovery platform mounting ring (50), an arch-shaped rack (53) is fixedly connected to the recovery platform body (52), and the arch-shaped rack (53) and the electric drive gear (51) mesh with each other. A plastic collection tank (54) is provided inside the main body of the collection platform (52), an ice melting heating layer is provided on the inner wall of the plastic collection tank (54), a drain hole (55) is provided inside the plastic collection tank (54), the drain hole (55) is connected to a water collection tank via a hose, and the water collection tank is connected to the cooling system of the nacelle (3). A wind turbine with an ice-melting function.

2. The zone-specific heating module has a multi-layer composite resistance structure, the multi-layer composite resistance structure includes a first protective layer, a second protective layer, and a metal alloy resistance layer disposed between the first protective layer and the second protective layer, the second protective layer being attached to the surface of the blade (4). A wind turbine having an ice-melting function as described in claim 1.

3. The first protective layer and the second protective layer use one of the following: a polyimide film layer, a ceramicized silicone rubber layer, or a modified epoxy glass cloth layer. The thickness of the first protective layer and the second protective layer is 0.1 mm to 0.3 mm. The aforementioned metal alloy resistance layer is fabricated by forming a specific topology circuit on one of the following: a nichrome alloy thin film, an iron-chromium-aluminum alloy wire mesh, or a titanium-aluminum-vanadium-based shape memory alloy thin film, using a photolithography or laser engraving process. The resistance value of the aforementioned metal alloy resistance layer is 2 to 8 Ω / m 2 Make it so A wind turbine having an ice-melting function as described in claim 2.

4. The first protective layer and the second protective layer are vacuum laminated together using a high-temperature resistant epoxy adhesive to form a packaged body. Silver paste printed electrodes are provided on the edges of the packaged body, and the spacing between the silver paste printed electrodes is distributed in a gradient along the chord direction of the blade (4), thereby achieving zone-specific temperature control. A wind turbine having an ice-melting function as described in claim 2.

5. The aforementioned radar sensor module is A radar signal transmitting unit for transmitting a radar signal toward the surface of the blade (4), The system includes an echo signal receiving unit for receiving radar signals reflected from the surface of the blade (4), A wind turbine having an ice-melting function as described in claim 1.

6. The intelligent control module for controlling the operation of the zone-specific heating modules based on the detection data of the radar sensor module is: A Doppler matrix construction unit for generating a difference frequency signal by frequency mixing the transmission signal and echo signal of the radar sensor module, obtaining distance bins and velocity bins by performing a fast Fourier transform on the difference frequency signal, and constructing a Doppler matrix based on the distance bins and velocity bins, An ice formation location identification unit for extracting features from the Doppler matrix, obtaining anomalous regions in the Doppler matrix, quantifying the ice formation thickness based on the frequency shift and scattering intensity of the anomalous regions, and mapping it to the surface of the blade (4) to generate an ice formation location heat map, A thermodynamic calculation unit for calculating the heating output of zone-specific heating modules corresponding to each heating zone, based on the ice formation location heat map and the ice formation thickness corresponding to each location on the ice formation location heat map, A heating control unit for controlling the operation of zone-specific heating modules based on the calculation results of the heating output of each zone-specific heating module corresponding to each heating zone, is included. A wind turbine having an ice-melting function as described in claim 1.

7. The above involves performing a Fast Fourier Transform on the difference frequency signal to obtain distance bins and velocity bins, and constructing a Doppler matrix based on the distance bins and velocity bins. A fast Fourier transform is performed on the difference frequency signal within each pulse repetition period of the aforementioned difference frequency signal, and the distance bin is obtained using the following equation: Here, This is the distance bin, That is the speed of light, This is the difference frequency between the transmitted signal and the echo signal of the radar sensor module. Assuming that is a frequency modulation slope, and performing a Fast Fourier Transform on the data of the same distance bin within multiple pulse repetition periods of the difference frequency signal, the velocity bin is obtained by the following equation: Here, This is the velocity bin, This is the wavelength of the transmission signal from the radar sensor module, This is the frequency deviation of the echo signal of the radar sensor module relative to the transmitted signal, Based on the distance bin and velocity bin, we construct the following Doppler matrix: Here, This is a Doppler matrix constructed based on distance bins and velocity bins. Distance bin 1 and speed bin This is the signal energy at, Distance bin 1 and speed bin This is the signal energy at, Distance Bin M and speed bin This is the signal energy at, distance bin M and velocity bin This is the signal energy at, distance bin k and velocity bin This is a time-series sample of the difference frequency signal, where K is the number of distance bins, L is the number of velocity bins, and e represents the base of the natural logarithm, with its value being 2.

71. Let represent pi, and assume its value is 3.

14. Including the matter, A wind turbine having an ice-melting function as described in claim 6.

8. The above calculation of the heating output of the zone-specific heating module corresponding to each heating zone, based on the ice formation location heat map and the ice formation thickness corresponding to each location on the ice formation location heat map, is performed using the following formula: Here, This is the heating output of the zone-specific heating module corresponding to the i-th heating zone, This is the theoretical heating power required to melt a unit ice thickness and unit area. year, This represents the heating efficiency of the zone-specific heating modules, which is set at 85%. This is the ice thickness at position j of the i-th heating zone, This is the number of ice formation thicknesses in the i-th heating zone, This is the area of ​​the i-th heating zone. including, A wind turbine having an ice-melting function as described in claim 6.

Images