Heat dissipation method and system for cabin and control cabinet of wind generating set

Abstract

The invention relates to a heat dissipation method and system for a cabin and a control cabinet of a wind generating set. The method comprises the steps that the internal environment temperature of the cabin and the internal hot-spot temperature of the control cabinet are monitored; starting or stopping a phase change heat absorption and forced convection heat dissipation process aiming at the cabin based on the internal environment temperature of the cabin, and maintaining the temperature of the cabin within a target range; wherein the cooling airflow flowing through the cabin is guided to be used for carrying out auxiliary convection heat dissipation on the control cabinet; the heat dissipation plate is used for conducting heat generated by a power device in the control cabinet to a cabin structure for heat exchange; based on the hot spot temperature in the control cabinet, the position of the air guide nozzle is dynamically adjusted to guide airflow, and heat dissipation of the heat dissipation plate and the power device is enhanced. The cooling airflow flowing through the engine room is guided to the control cabinet for auxiliary heat dissipation, systematic cooperation of the engine room and the control cabinet on the heat dissipation path and energy management is achieved, the overall heat dissipation efficiency and the energy utilization efficiency are remarkably improved, and the comprehensive operation cost of the heat dissipation system is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind turbine cooling technology, and in particular to a wind turbine cooling method and system for cooling the nacelle and control cabinet of a wind turbine. BACKGROUND

[0002] In the field of wind power generation, the nacelle and control cabinet of a wind turbine are equipped with critical electrical equipment that generates a large amount of heat during operation. To ensure normal operation of the equipment, the prior art usually provides independent cooling systems for the nacelle and control cabinet. For example, the nacelle can use air cooling or water cooling systems for overall cooling, while the control cabinet relies on internal fans for forced air cooling.

[0003] However, this independent cooling architecture has inherent defects: the cooling air flow or cooling capacity generated by the nacelle cooling system is not effectively utilized and cannot be coordinated with the cooling needs of the control cabinet; conversely, the control cabinet cooling system also operates independently and cannot be linked with the thermal management process of the nacelle. This "each for itself" cooling mode results in waste of cooling resources, low overall cooling efficiency, and increased overall energy consumption.

[0004] Therefore, how to change the cooling process of the nacelle and control cabinet of a wind turbine from independent to coordinated integration has become a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a wind turbine cooling method and system for the nacelle and control cabinet of a wind turbine, which solves the problem of poor cooling efficiency caused by the independent cooling process of the nacelle and control cabinet of a wind turbine.

[0006] In one aspect, the present application provides a wind turbine cooling method for the nacelle and control cabinet of a wind turbine, comprising: monitoring the internal environmental temperature of the nacelle and the hotspot temperature of the control cabinet; based on the internal environmental temperature of the nacelle, starting or stopping the phase change heat absorption and forced convection cooling process for the nacelle to maintain the nacelle temperature within a target range; wherein the cooling air flow through the nacelle is guided to assist in the convection cooling of the control cabinet; conducting the heat generated by the power devices in the control cabinet to the heat sink that exchanges heat with the nacelle structure; based on the hotspot temperature of the control cabinet, dynamically adjusting the position of the air guide nozzle to guide the air flow and enhance the cooling of the heat sink and power devices.

[0007] According to the application, a method for cooling a nacelle and a control cabinet of a wind turbine generator system is provided, which includes: When the temperature inside the nacelle is monitored to rise and exceed a first temperature threshold, the heat generated by the air and equipment inside the nacelle is absorbed by the phase change material arranged in the nacelle; When the heat storage of the phase change material tends to be saturated and the temperature inside the nacelle is still higher than a second temperature threshold, the heat exchanger is started and the cooling medium is circulated to forcibly take away the heat of the phase change material and the air inside the nacelle, the radome is opened to guide the natural wind into the nacelle, and the forced convection is formed by the heat exchanger and the radome to reduce and maintain the temperature of the nacelle in a target range.

[0008] According to the application, a method for cooling a nacelle and a control cabinet of a wind turbine generator system is provided, which includes: When the temperature inside the nacelle is monitored to drop to a third temperature threshold, the operation of the heat exchanger and the guiding action of the radome are stopped; After the forced cooling is stopped, the phase change material is relied on to naturally release the stored heat to the nacelle to slow down the temperature drop; If the temperature inside the nacelle continues to drop to a fourth temperature threshold, the auxiliary heating wire is started to heat to prevent the equipment from being too cold.

[0009] According to the application, a method for cooling a nacelle and a control cabinet of a wind turbine generator system is provided, which includes: The radome is arranged at the tail or side wall of the nacelle to capture and guide the natural wind flowing outside the nacelle; The guided natural wind is made to pass through the special air duct connected to the control cabinet; The outlet of the special air duct is aligned with the air inlet or heat dissipation surface of the control cabinet to make the cooling air flow directly act on the control cabinet for convection cooling.

[0010] According to the application, a method for cooling a nacelle and a control cabinet of a wind turbine generator system is provided, which includes: The temperature of different areas inside the control cabinet is monitored to identify local hot spots; Based on the temperature feedback of the local hot spots, a control signal is generated; According to the control signal, the adjustable guide plate arranged at the outlet of the special air duct or the deflection angle and opening degree of the air deflector are adjusted to guide the cooling air flow to the local hot spot area.

[0011] A heat dissipation method for a wind turbine nacelle and control cabinet according to the present invention further includes: As the cooling airflow flows over the surface of the heat dissipation fins outside the control cabinet, it carries away the heat from the fins through convection. The airflow generated by the fan inside the control cabinet and the cooling airflow introduced from the outside converge inside the cabinet, which together enhances the airflow and heat dissipation inside the cabinet; The heat generated by the power devices is continuously conducted to the heat sink through the thermally conductive silicone pad, and the heat is finally discharged from the control cabinet by the coordinated internal and external airflow.

[0012] According to the present invention, a heat dissipation method for a wind turbine nacelle and control cabinet, wherein the heat generated by the power devices in the control cabinet is conducted to a heat dissipation plate that exchanges heat with the nacelle structure, includes: The power device is fixed to the inner mounting surface of the heat sink; A highly thermally conductive silicone pad is filled between the mounting surfaces of the power device and the heat sink to eliminate air gaps and establish an efficient heat conduction path. The heat sink containing the power devices is tightly installed on the control cabinet wall using fasteners, so that the outer side of the heat sink is in direct contact with the air inside the cabin or the cabin structure.

[0013] A heat dissipation method for a wind turbine nacelle and control cabinet according to the present invention further includes: The outer side of the heat sink is designed with heat dissipation fins that extend into the cabin environment to increase the contact area with the air inside the cabin. The cooling airflow flowing through the cabin is guided by the air deflector and washes over the surface of the heat dissipation fins of the heat sink, carrying away heat through convection.

[0014] According to the present invention, a heat dissipation method for a wind turbine nacelle and control cabinet includes dynamically adjusting the position of the air guide nozzles to guide airflow based on the hot spot temperature inside the control cabinet, thereby enhancing heat dissipation of the heat sink and power devices. The hottest hotspots are detected and located by applying a thermosensitive pigment to the surface or adjacent area of ​​a power device. The color change of the thermosensitive pigment is captured by an image sensor or a photosensitive element and converted into a temperature signal. The intelligent control system receives the temperature signal and generates corresponding drive commands; According to the drive command, the micro servo motor or stepper motor connected to the air guide nozzle is controlled to adjust the deflection angle and extension length of the air guide nozzle, thereby accurately guiding the cooling airflow to the identified hot spot area for enhanced heat dissipation.

[0015] Secondly, the present invention provides a heat dissipation system for a wind turbine generator nacelle and control cabinet, comprising: The monitoring module is used to monitor the ambient temperature inside the cabin and the hot spot temperature inside the control cabinet. The heat dissipation module is used to start or stop the phase change heat absorption and forced convection heat dissipation process for the engine compartment based on the ambient temperature inside the engine compartment, so as to maintain the engine compartment temperature within the target range; wherein, the cooling airflow flowing through the engine compartment is guided to provide auxiliary convection heat dissipation for the control cabinet. A heat exchange module is used to conduct the heat generated by the power devices in the control cabinet to a heat dissipation plate that exchanges heat with the cabin structure. The adjustment module is used to dynamically adjust the position of the air guide nozzles based on the hot spot temperature inside the control cabinet to guide airflow and enhance the heat dissipation of the heat sink and power devices.

[0016] Thirdly, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the heat dissipation method for the wind turbine nacelle and control cabinet as described above.

[0017] Fourthly, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the heat dissipation method for the wind turbine generator nacelle and control cabinet as described above.

[0018] Fifthly, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the heat dissipation method for the wind turbine generator nacelle and control cabinet as described above.

[0019] This invention provides a heat dissipation method and system for a wind turbine nacelle and control cabinet, comprising: monitoring the ambient temperature inside the nacelle and the hot spot temperature inside the control cabinet; based on the ambient temperature inside the nacelle, initiating or stopping the phase change heat absorption and forced convection heat dissipation processes for the nacelle to maintain the nacelle temperature within a target range; wherein, the cooling airflow flowing through the nacelle is guided to provide auxiliary convection heat dissipation for the control cabinet; the heat generated by the power devices inside the control cabinet is conducted to the heat dissipation plate that exchanges heat with the nacelle structure; based on the hot spot temperature inside the control cabinet, the position of the air guide nozzles is dynamically adjusted to guide the airflow and enhance the heat dissipation of the heat dissipation plate and power devices. By guiding the cooling airflow flowing through the nacelle to the control cabinet for auxiliary heat dissipation, systematic synergy in heat dissipation path and energy management between the nacelle and the control cabinet is achieved, significantly improving the overall heat dissipation efficiency and energy utilization efficiency of the entire power generation unit, and effectively reducing the overall operating cost of the heat dissipation system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram illustrating the principle of the heat dissipation method for the wind turbine generator nacelle and control cabinet provided in this embodiment; Figure 2 This is a flowchart illustrating the heat dissipation method for the wind turbine generator nacelle and control cabinet provided in this embodiment; Figure 3 This is a schematic diagram of the heat dissipation system of the wind turbine generator nacelle and control cabinet provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the electronic device provided in this embodiment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0023] Figure 1 This is a schematic diagram illustrating the principle of the heat dissipation method for the wind turbine generator nacelle and control cabinet provided in this embodiment.

[0024] This embodiment discloses a heat dissipation method for the nacelle and control cabinet of a wind turbine generator set. The core is to achieve the coordinated integration of the heat dissipation process of the nacelle and control cabinet, solve the problems of resource waste and low efficiency in the existing independent heat dissipation mode, and at the same time take into account both high temperature cooling and low temperature insulation, and accurately deal with local hot spots in the control cabinet. The following describes the specific structural layout and operation steps in detail.

[0025] like Figure 1 As shown, to achieve coordinated heat dissipation, the installation and connection of each core component must be completed first to ensure smooth functional integration of each component: Inside the engine compartment, phase change materials are placed around the main heat-generating equipment such as gearboxes and generators to ensure that the phase change materials can quickly absorb the heat emitted by the equipment.

[0026] A heat exchanger is installed inside the engine room, along with a cooling medium circulation pipeline. The inlet and outlet of the circulation pipeline are connected to the medium channel of the heat exchanger to ensure that the cooling medium can circulate smoothly within the pipeline.

[0027] A controllable air deflector is installed at the rear or side of the cabin. The air outlet of the air deflector is connected to the inlet of a dedicated air duct, while the outlet of the dedicated air duct is aligned with the air inlet of the control cabinet or the heat dissipation surface.

[0028] Inside the control cabinet, the power devices are fixed to the inner mounting surface of the heat sink; the outer side of the heat sink extends out of the control cabinet into the engine room environment, and heat dissipation fins are provided on the outer side; thermally conductive silicone pads are filled between the power devices and the mounting surface of the heat sink, and the heat sink is tightly fixed to the control cabinet wall with fasteners.

[0029] An adjustable baffle is installed at the outlet of the dedicated air duct, and air guide nozzles are installed in the area corresponding to the power devices inside the control cabinet. The air guide nozzles are connected to a micro servo motor or stepper motor, and their positions are adjusted by the motor.

[0030] A thermosensitive pigment is coated on the surface of the power device or its adjacent area, and an image sensor or photosensitive element is installed in the control cabinet to capture the color change of the thermosensitive pigment.

[0031] An ambient temperature sensor is installed inside the cabin, and multiple temperature detection elements are installed inside the control cabinet. All sensors and detection elements are connected to the intelligent control system, which in turn is connected to the heat exchanger, the fairing, the adjustable deflector, the micro servo motor / stepper motor, the fan inside the control cabinet, and the auxiliary heating wire.

[0032] Solar panels are installed on the top of the nacelle or in a location with good lighting and ventilation, and a small wind turbine is added near the wind turbine. Both the solar panels and the wind turbine are electrically connected to the battery, which supplies power to all electrical components of the entire cooling system.

[0033] Figure 2 This is a flowchart illustrating the heat dissipation method for the wind turbine generator nacelle and control cabinet provided in this embodiment.

[0034] After the structural setup is completed, the heat dissipation process begins, which mainly includes the following steps: 201. Monitor the ambient temperature inside the cabin and the hot spot temperature inside the control cabinet.

[0035] Temperature monitoring provides the basis for subsequent heat dissipation actions, and real-time temperature data of the engine compartment and control cabinet needs to be obtained: An ambient temperature sensor inside the cabin continuously collects the overall temperature and transmits the temperature signal to the intelligent control system in real time. Temperature detection elements within the control cabinet collect the temperature of different areas within the cabinet. Simultaneously, the thermosensitive pigment coated on the surface of the power devices changes color with temperature. An image sensor or photosensitive element continuously captures the color changes of the thermosensitive pigment and converts the color signal into a temperature signal, which is then transmitted to the intelligent control system. After receiving all temperature signals, the intelligent control system analyzes and processes them to determine whether the cabin needs to activate cooling or insulation measures, and simultaneously locates localized hot spots and their temperatures within the control cabinet.

[0036] 202. Based on the ambient temperature inside the cabin, start or stop the phase change heat absorption and forced convection heat dissipation processes for the cabin to maintain the cabin temperature within the target range.

[0037] Specifically, when the intelligent control system detects that the ambient temperature inside the cabin has risen above the preset first temperature threshold, it activates the phase change material to absorb heat. The phase change material stores heat through its own phase change process, quickly reducing the temperature of the air and equipment inside the cabin and preventing the cabin temperature from continuing to rise.

[0038] If the phase change material's heat storage becomes saturated and the cabin's internal ambient temperature is still higher than the preset second temperature threshold, the intelligent control system will activate the heat exchanger, causing the cooling medium to flow in the circulation pipeline and forcibly remove the phase change material and the heat accumulated in the cabin. At the same time, the system will control the deflector to open, guiding external natural air into the cabin. The natural air and the heat exchanger will work together to form forced convection, which will lower the cabin temperature and maintain it within the target range.

[0039] When the ambient temperature inside the cabin drops to the preset third temperature threshold, the intelligent control system stops the operation of the heat exchanger and the guiding function of the deflector; at this time, the phase change material naturally releases the stored heat into the cabin environment, slowing down the rate of temperature drop and preventing the sudden temperature drop from affecting the equipment.

[0040] If the ambient temperature inside the cabin continues to drop to the preset fourth temperature threshold, the intelligent control system will activate the auxiliary heating wire to heat the cabin and prevent the equipment from malfunctioning due to excessively low temperatures.

[0041] 203. The heat generated by the power devices in the control cabinet is conducted to the heat dissipation plate that exchanges heat with the cabin structure.

[0042] Specifically, by utilizing the cooling resources of the engine compartment, combined with its own heat-conducting structure and precise airflow design, the control cabinet achieves efficient heat dissipation: After the air deflector opens to guide natural air into the engine compartment, some of the natural airflow acts as cooling airflow, entering a dedicated air duct and being delivered to the air inlet or heat dissipation surface of the control cabinet for direct convective cooling. The intelligent control system identifies localized hotspots based on temperature data from temperature sensors within the control cabinet and generates control signals. Based on these signals, the system adjusts the deflection angle and opening of the adjustable air deflector at the outlet of the dedicated air duct, directing the cooling airflow to the corresponding external heat dissipation surface of the control cabinet, thus improving localized heat dissipation efficiency.

[0043] The heat generated by the power devices inside the control cabinet is first transferred to the thermally conductive silicone pads in contact with them. These pads fill the air gap between the power devices and the heat sink, establishing an efficient heat conduction path and preventing air insulation from hindering heat transfer. Heat is then transferred through the silicone pads to the heat sink, where the cooling fins on the outer side increase the contact area with the cabin air. Cooling airflow through the cabin washes over the surface of the cooling fins, carrying away heat through convection, thus transferring heat from the control cabinet to the cabin environment.

[0044] 204. Based on the hot spot temperature inside the control cabinet, dynamically adjust the position of the air guide nozzles to guide airflow and enhance the heat dissipation of the heat sink and power devices.

[0045] Specifically, the airflow generated by the internal fan of the control cabinet, combined with externally introduced cooling airflow entering the cabinet through the air inlet, converges to accelerate airflow and improve heat dissipation efficiency. For localized hotspots within the control cabinet, image sensors or photosensitive elements capture color changes in thermosensitive pigments and convert them into temperature signals, which are then transmitted to the intelligent control system. Based on these temperature signals, the intelligent control system generates drive commands to control the micro-servo motors or stepper motors connected to the air guide nozzles. This adjusts the deflection angle and extension length of the air guide nozzles, precisely directing the converged airflow towards the hotspot area. This enhances heat dissipation for the power devices and heat sinks, rapidly reducing the hotspot temperature.

[0046] Furthermore, this embodiment can adopt a multi-energy power supply mode to reduce external energy consumption and ensure the continuous and stable operation of the heat dissipation system: Solar panels and wind turbines are prioritized for power generation, which directly powers components such as the heat exchanger, internal fan of the control cabinet, micro servo motor, stepper motor, and intelligent control system. When the power generation of the solar panels or wind turbines exceeds the immediate power demand of the heat dissipation system, the excess energy is stored in the battery; when the solar panels or wind turbines cannot generate power normally or the power generation is insufficient due to nighttime, cloudy days, or extreme weather, the battery automatically discharges to power the heat dissipation system, ensuring uninterrupted heat dissipation.

[0047] The method described in this embodiment has the following effects: Improve heat dissipation efficiency: Guide the cooling airflow from the engine compartment to the control cabinet for auxiliary heat dissipation, realize the coordination of the heat dissipation paths of the engine compartment and the control cabinet, avoid waste of cooling resources, and improve the overall heat dissipation efficiency of the system.

[0048] Stable temperature control: Phase change materials, heat exchangers, and natural airflow work together to ensure that the cabin temperature is maintained within the target range. Thermally conductive silicone pads, heat dissipation fins, and adjustable air nozzles work together to precisely solve local hot spots in the control cabinet and prevent equipment from being affected by high or low temperatures. Energy saving and high reliability: Multi-energy power supply reduces external energy consumption, and intelligent temperature control reduces energy consumption of components such as fans; new materials and structural design extend equipment life, reduce maintenance frequency, reduce downtime losses, and improve the operational stability and economy of wind turbine generator sets.

[0049] Figure 3 This is a schematic diagram of the heat dissipation system of the wind turbine generator nacelle and control cabinet provided in this embodiment.

[0050] like Figure 3 As shown in the figure, this embodiment provides a heat dissipation system for a wind turbine nacelle and control cabinet, comprising: Monitoring module 301 is used to monitor the ambient temperature inside the cabin and the hot spot temperature inside the control cabinet; The heat dissipation module 302 is used to start or stop the phase change heat absorption and forced convection heat dissipation process for the engine compartment based on the ambient temperature inside the engine compartment, so as to maintain the engine compartment temperature within the target range; wherein, the cooling airflow flowing through the engine compartment is guided to perform auxiliary convection heat dissipation on the control cabinet. The heat exchange module 303 is used to conduct the heat generated by the power devices in the control cabinet to the heat dissipation plate that exchanges heat with the cabin structure; The adjustment module 304 is used to dynamically adjust the position of the air guide nozzles based on the hot spot temperature inside the control cabinet to guide airflow and enhance the heat dissipation of the heat sink and power devices.

[0051] Figure 4 This is a schematic diagram of the structure of the electronic device provided in this embodiment.

[0052] like Figure 4 As shown, the electronic device may include: a processor 401, a communication interface 402, a memory 403, and a communication bus 404. The processor 401, communication interface 402, and memory 403 communicate with each other via the communication bus 404. The processor 401 can call logical instructions from the memory 403 to execute heat dissipation methods for the wind turbine nacelle and control cabinet.

[0053] Furthermore, the logical instructions in the aforementioned memory 403 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0054] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the heat dissipation methods for the wind turbine nacelle and control cabinet provided by the above methods.

[0055] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the heat dissipation methods for the wind turbine nacelle and control cabinet provided by the methods described above.

[0056] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0057] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0058] 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, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for heat dissipation of the nacelle and control cabinet of a wind turbine generator set, characterized in that, include: Monitor the ambient temperature inside the cabin and the hot spot temperature inside the control cabinet; Based on the ambient temperature inside the cabin, the phase change heat absorption and forced convection heat dissipation processes for the cabin are started or stopped to maintain the cabin temperature within the target range. The cooling airflow flowing through the cabin is guided to provide auxiliary convective heat dissipation for the control cabinet. The heat generated by the power devices in the control cabinet is conducted to the heat dissipation plate that exchanges heat with the cabin structure; Based on the hot spot temperature inside the control cabinet, the position of the air duct is dynamically adjusted to guide airflow and enhance the heat dissipation of the heat sink and power devices.

2. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 1, characterized in that, The process of initiating or stopping the phase change heat absorption and forced convection heat dissipation process for the cabin based on the internal ambient temperature includes: When the ambient temperature inside the cabin is detected to rise and exceed the first temperature threshold, the phase change material arranged in the cabin absorbs the heat generated by the cabin air and equipment. When the phase change material's heat storage becomes saturated and the cabin's internal ambient temperature is still higher than the second temperature threshold, the heat exchanger is activated and the cooling medium is circulated to forcibly remove the phase change material and cabin heat. The deflector is opened and natural wind is guided into the cabin to form forced convection in conjunction with the heat exchanger, thereby reducing the cabin temperature and maintaining it within the target range.

3. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 2, characterized in that, The process of reducing and maintaining the cabin temperature within the target range includes: When the ambient temperature inside the cabin is detected to drop to the third temperature threshold, the operation of the heat exchanger and the guiding function of the deflector are stopped. After forced cooling is stopped, the phase change material naturally releases the heat it stores into the cabin environment to slow down the temperature drop. If the ambient temperature inside the cabin continues to drop to the fourth temperature threshold, the auxiliary heating wire will be activated to prevent the equipment from becoming too cold.

4. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 1, characterized in that, The cooling airflow flowing through the nacelle is guided to provide auxiliary convective cooling for the control cabinet, achieved through a dedicated air duct, including: A fairing is installed at the tail or side wall of the cabin to capture and guide the natural wind flowing outside the cabin; The guided natural wind is directed through a dedicated air duct connected to the control cabinet; The outlet of the dedicated air duct is aligned with the air inlet or heat dissipation surface of the control cabinet, so that the cooling airflow directly acts on the control cabinet for convection heat dissipation.

5. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 4, characterized in that, The boot process is dynamically adjustable and includes: Monitor the temperature in different areas inside the control cabinet and identify local hot spots; Based on the temperature feedback of the local hotspots, a control signal is generated; According to the control signal, the deflection angle and opening of the adjustable guide plate or the air guide nozzle set at the outlet of the dedicated air duct are adjusted to guide the cooling airflow to the local hot spot area.

6. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 5, characterized in that, Also includes: As the cooling airflow flows over the surface of the heat dissipation fins outside the control cabinet, it carries away the heat from the fins through convection. The airflow generated by the fan inside the control cabinet and the cooling airflow introduced from the outside converge inside the cabinet, which together enhances the airflow and heat dissipation inside the cabinet; The heat generated by the power devices is continuously conducted to the heat sink through the thermally conductive silicone pad, and the heat is finally discharged from the control cabinet by the coordinated internal and external airflow.

7. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 4, characterized in that, The heat dissipation plate that conducts heat generated by the power devices in the control cabinet to exchange heat with the cabin structure includes: The power device is fixed to the inner mounting surface of the heat sink; A highly thermally conductive silicone pad is filled between the mounting surfaces of the power device and the heat sink to eliminate air gaps and establish an efficient heat conduction path. The heat sink containing the power devices is tightly installed on the control cabinet wall using fasteners, so that the outer side of the heat sink is in direct contact with the air inside the cabin or the cabin structure.

8. The heat dissipation method for the wind turbine generator nacelle and control cabinet according to claim 7, characterized in that, Also includes: The outer side of the heat sink is designed with heat dissipation fins that extend into the cabin environment to increase the contact area with the air inside the cabin. The cooling airflow flowing through the cabin is guided by the air deflector and washes over the surface of the heat dissipation fins of the heat sink, carrying away heat through convection.

9. The heat dissipation method for the nacelle and control cabinet of a wind turbine generator set according to any one of claims 1-8, characterized in that, The step of dynamically adjusting the position of the air ducts to guide airflow and enhance heat dissipation for the heat sink and power devices based on the hot spot temperature inside the control cabinet includes: The hottest hotspots are detected and located by applying a thermosensitive pigment to the surface or adjacent area of ​​a power device. The color change of the thermosensitive pigment is captured by an image sensor or a photosensitive element and converted into a temperature signal. The intelligent control system receives the temperature signal and generates corresponding drive commands; According to the drive command, the micro servo motor or stepper motor connected to the air guide nozzle is controlled to adjust the deflection angle and extension length of the air guide nozzle, thereby accurately guiding the cooling airflow to the identified hot spot area for enhanced heat dissipation.

10. A heat dissipation system for a wind turbine generator nacelle and control cabinet, characterized in that, include: The monitoring module is used to monitor the ambient temperature inside the cabin and the hot spot temperature inside the control cabinet. The heat dissipation module is used to start or stop the phase change heat absorption and forced convection heat dissipation process for the engine compartment based on the ambient temperature inside the engine compartment, so as to maintain the engine compartment temperature within the target range; wherein, the cooling airflow flowing through the engine compartment is guided to provide auxiliary convection heat dissipation for the control cabinet. A heat exchange module is used to conduct the heat generated by the power devices in the control cabinet to a heat dissipation plate that exchanges heat with the cabin structure. The adjustment module is used to dynamically adjust the position of the air guide nozzles based on the hot spot temperature inside the control cabinet to guide airflow and enhance the heat dissipation of the heat sink and power devices.

Images