Converter based on efficient heat dissipation structure and offshore wind turbine generator
By adopting an efficient heat dissipation structure combining microchannels and phase change materials in the converter, the problem of heat dissipation of the converter under high power operation in offshore wind turbines is solved, and the continuous, efficient heat dissipation and stable operation of the converter are achieved.
Patent Information
- Application Number
- CN202411972633.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-25
AI Technical Summary
In the offshore wind turbine, the converter generates a large amount of heat under high power operation. If the heat cannot be dissipated effectively in time, it may lead to equipment failure and affect the operation of the entire wind turbine.
Design a converter based on an efficient heat dissipation structure, and use the combination of microchannels and phase change materials to dissipate heat. The microchannel is arranged on the heating element of the converter and has a built-in phase change material. When the temperature exceeds the melting point and reaches the preset temperature difference value, the control module turns on the air-cooling assembly to realize the circulating flow and cooling of the phase change material.
Through the cooperation of phase change materials and air-cooled components, the continuous and efficient heat dissipation of the converter is achieved, ensuring stable operation of the converter under high power operation, and improving the operating safety and efficiency of offshore wind turbines.
Smart Images
Figure CN119696320A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of converter heat dissipation, and in particular to a converter and an offshore wind turbine generator set based on a high-efficiency heat dissipation structure. Background Art
[0002] During the operation of offshore wind turbines, the inverter is a hub of energy conversion, and it undertakes the key mission of converting the alternating current generated by the wind turbine into electricity that meets the requirements of the power grid. This process ensures that wind power can be stably and efficiently integrated into the power grid, meeting people's demand for clean energy.
[0003] Moreover, driven by the global demand for clean energy, the installed capacity of offshore wind power is increasing, the power of wind turbines is also increasing accordingly, and the power of converters is also increasing. This puts higher demands on the heat dissipation technology of converters, because converters will generate a lot of heat under high power operation. If the heat cannot be dissipated in time and effectively, it may cause equipment failure and affect the operation of the entire wind turbine. Summary of the invention
[0004] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.
[0005] To this end, the purpose of the present disclosure is to provide a converter and an offshore wind turbine based on a high-efficiency heat dissipation structure.
[0006] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides an inverter based on an efficient heat dissipation structure, comprising: an inverter body; a microchannel, the microchannel is arranged on the heating element of the inverter body, and a phase change material is arranged in the microchannel; a temperature detection module, the detection end of the temperature detection module is arranged in the microchannel, and the temperature detection module is used to detect the temperature in the microchannel; an air cooling component, the air cooling component is arranged on the inverter body, and the air cooling end of the air cooling component and the microchannel are arranged relative to each other; a control module, the control module is used to control the air cooling component to turn on when the temperature in the microchannel exceeds the melting point temperature of the phase change material and the temperature difference reaches a preset value.
[0007] Optionally, the converter further comprises: a heat sink, the heat sink is arranged on the heating element of the converter body, and the microchannel is arranged on the heat sink, and the air-cooling end of the air-cooling component is arranged opposite to the heat sink.
[0008] Optionally, the converter further includes: a plurality of heat sinks, wherein the plurality of heat sinks are respectively arranged on the heat sink, and the microchannels are arranged between adjacent heat sinks.
[0009] Optionally, the inverter also includes: a humidity sensor, the detection end of the humidity sensor is arranged on the inverter body, and the humidity sensor is used to detect the ambient humidity of the inverter body; wherein the signal input end of the control module is connected to the signal output end of the humidity sensor, and the control module is used to reduce the wind speed of the air-cooling component when the ambient humidity of the inverter body increases, and increase the wind speed of the air-cooling component when the ambient humidity of the inverter body decreases.
[0010] Optionally, the inverter also includes: a wind speed sensor, the detection end of the wind speed sensor is arranged on the inverter body, and the wind speed sensor is used to detect the ambient wind speed of the inverter body; wherein the signal input end of the control module is connected to the signal output end of the wind speed sensor, and the control module is used to reduce the wind speed of the air cooling component when the ambient wind speed of the inverter body increases, and increase the wind speed of the air cooling component when the ambient wind speed of the inverter body decreases.
[0011] Optionally, the inverter also includes: a circulation component, the liquid outlet end of the circulation component is connected to the liquid inlet end of the microchannel, and the liquid inlet end of the circulation component is connected to the liquid outlet end of the microchannel, and the detection end of the temperature detection module is arranged at the liquid outlet end of the microchannel; wherein, the signal output end of the control module is connected to the signal input end of the circulation component, and the control module is used to control the circulation component to open when the temperature in the microchannel exceeds the melting point temperature of the phase change material and the temperature difference reaches the preset value, so as to allow the liquid phase change material in the microchannel to circulate.
[0012] Optionally, the microchannel includes: a plurality of first channels, the first channels are arranged on the heating element of the inverter body along a first direction, and the plurality of first channels are spaced apart along a second direction, and the phase change material is arranged in the first channel; wherein the first direction and the second direction are at a preset angle.
[0013] Optionally, the microchannel also includes: a plurality of second channels, the second channels are arranged on the heating element of the inverter body along the second direction, and the plurality of second channels are spaced apart along the first direction, and the phase change material is arranged in the second channels; wherein the plurality of first channels and the plurality of second channels are staggered and connected.
[0014] Optionally, the phase change material is paraffin, and the melting point range of the paraffin is 30°C-60°C, and the preset value range is 5°C-10°C.
[0015] A second aspect of the present disclosure provides an offshore wind turbine generator system, comprising: a converter based on a high-efficiency heat dissipation structure as provided in the first aspect of the present disclosure.
[0016] The technical solution provided by the present disclosure may have the following beneficial effects:
[0017] Since the microchannel is arranged on the heating element of the converter body, and the phase change material is arranged in the microchannel, the heat in the heating element can be conducted into the microchannel and heat the phase change material until the phase change material is converted from solid to liquid, thereby realizing the heat transfer and further realizing the heat dissipation of the converter body; when the temperature in the microchannel exceeds the melting point temperature of the phase change material and the temperature difference reaches the preset value, the control module can control the air cooling component to turn on, so that the phase change material in the microchannel is converted from liquid to solid again, and then continues to absorb the heat of the heating element. Therefore, through the cooperation of the phase change material and the air cooling component, the continuous and efficient heat dissipation of the converter body is realized, ensuring that the converter can work stably under high-power operation.
[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0020] Figure 1 is a schematic structural diagram of a converter based on a high-efficiency heat dissipation structure proposed in one embodiment of the present disclosure;
[0021] Figure 2 is a schematic diagram of a flow path of a converter based on a high-efficiency heat dissipation structure proposed in one embodiment of the present disclosure;
[0022] As shown in the figure: 1. heating element, 2. microchannel, 3. phase change material, 4. temperature detection module, 5. air cooling component, 6. heat sink, 7. heat sink, 8. circulation component. DETAILED DESCRIPTION
[0023] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.
[0024] like Figure 1 and Figure 2As shown, the embodiment of the present disclosure proposes an inverter based on an efficient heat dissipation structure, including: an inverter body, a microchannel 2, a temperature detection module 4, an air cooling component 5 and a control module, the microchannel 2 is arranged on the heating element 1 of the inverter body, and a phase change material 3 is arranged in the microchannel 2, the detection end of the temperature detection module 4 is arranged in the microchannel 2, and the temperature detection module 4 is used to detect the temperature in the microchannel 2, the air cooling component 5 is arranged on the inverter body, and the air cooling end of the air cooling component 5 and the microchannel 2 are arranged relative to each other, and the control module is used to control the air cooling component 5 to turn on when the temperature in the microchannel 2 exceeds the melting point temperature of the phase change material 3 and the temperature difference reaches a preset value.
[0025] It can be understood that since the microchannel 2 is arranged on the heating element 1 of the inverter body and the phase change material 3 is arranged in the microchannel 2, the heat in the heating element 1 can be conducted into the microchannel 2 and heat the phase change material 3 until the phase change material 3 is converted from solid to liquid, thereby realizing heat transfer and further realizing heat dissipation of the inverter body.
[0026] At the same time, since the detection end of the temperature detection module 4 is arranged in the microchannel 2, the control module can use the temperature detection module 4 to obtain the temperature in the microchannel 2. Moreover, since the air-cooling end of the air-cooling component 5 and the microchannel 2 are relatively arranged, the air-cooling component 5 can cool the microchannel 2 by air cooling.
[0027] When the temperature in the microchannel 2 exceeds the melting point of the phase change material 3 and the temperature difference reaches a preset value, the control module can control the air cooling component 5 to turn on, so that the phase change material 3 in the microchannel 2 is converted from liquid to solid again, and then continues to absorb the heat of the heating element 1. Therefore, through the cooperation of the phase change material 3 and the air cooling component 5, the continuous and efficient heat dissipation of the converter is achieved, ensuring that the converter can work stably under high-power operation.
[0028] It should be noted that, in the relevant embodiments, the converter achieves heat dissipation by air cooling or liquid cooling.
[0029] Specifically, for the air cooling method, the working principle is to promote the continuous flow of air inside the converter body. As a heat carrier, the air will take away the heat generated inside the converter body during the flow process, thereby achieving the purpose of heat dissipation. The air cooling method has a simple structure and low cost, but for high-power converter bodies, the heat dissipation efficiency of air cooling cannot meet the requirements, which can easily cause the converter body to be damaged due to overheating, affecting the normal operation of the wind turbine.
[0030] For liquid cooling, the liquid cooling system sets cooling pipes inside the converter body, and the coolant circulates continuously in the pipes. The coolant has a high specific heat capacity and can efficiently absorb the heat generated during the operation of the converter body. The liquid cooling method can more effectively control the temperature of the converter body and ensure its stability and reliability under high-power operation. However, the liquid cooling method has the risk of coolant leakage. Once leaked, it may corrode the internal components of the converter body. In addition, the coolant needs to be regularly maintained and replaced, which is costly.
[0031] This embodiment combines the advantages of air cooling and heat dissipation by phase change material 3, avoids the risk of liquid cooling coolant leakage, and reduces maintenance costs. Moreover, compared with single air cooling, the heat dissipation efficiency is greatly improved, realizing an efficient, safe and low-cost converter heat dissipation solution.
[0032] The converter body is used to convert the AC power generated by the wind turbine into electric energy that meets the requirements of the power grid. It has multiple components and generates a lot of heat during operation, such as power modules and other heating components 1. The specific type of the converter body can be set according to actual needs and is not limited to this.
[0033] The microchannel 2 is a small tubular channel with a small inner diameter, and is used to arrange the phase change material 3 on the heating element 1 of the converter body. On the one hand, the microchannel 2 plays a role in accommodating the phase change material 3, and on the other hand, the microchannel 2 can also increase the contact area between the phase change material 3 and the heating element 1. The specific type of the microchannel 2 can be set according to actual needs, and there is no limitation on this.
[0034] The phase change material 3 is used for direct heat dissipation of the heating element 1. Specifically, the phase change material 3 stores a large amount of cold energy when it is in a solid state. When the converter body is operating normally, the temperature of the heating element 1 continues to rise, and the phase change material 3 absorbs heat and changes from a solid state to a liquid state, thereby achieving cooling of the heating element 1. The specific type of the phase change material 3 can be set according to actual needs and is not limited to this.
[0035] The temperature detection module 4 is used to detect the temperature in the microchannel 2. The specific type of the temperature detection module 4 can be set according to actual needs and is not limited to this. For example, the temperature detection module 4 can be a temperature sensor.
[0036] The air cooling component 5 is used to cool the phase change material 3 by air cooling. Specifically, when the phase change material 3 absorbs heat to a certain extent, the air cooling component 5 is activated to accelerate the air flow, take away the heat emitted by the phase change material 3, make it re-solidify, and enter the next round of heat dissipation cycle. The specific type of the air cooling component 5 can be set according to actual needs, and there is no limitation to this. For example, the air cooling component 5 can be a fan, which is arranged on the housing of the converter body. It can blow air from the outside of the housing to the inside according to a preset speed, and can also blow air from the inside of the housing to the outside of the housing according to a preset speed.
[0037] The control module is used to control the switch of the air cooling component 5 according to the temperature detected by the temperature detection module 4. The specific type of the control module can be set according to actual needs and is not limited to this. For example, the control module can be a controller, etc.
[0038] like Figure 1 As shown, in some embodiments, the converter further includes: a heat sink 6, the heat sink 6 is arranged on the heating element 1 of the converter body, and the microchannel 2 is arranged on the heat sink 6, and the air-cooling end of the air-cooling component 5 and the heat sink 6 are arranged relative to each other.
[0039] It can be understood that, since the heat sink 6 is arranged on the heating element 1 of the converter body, and the microchannel 2 is arranged on the heat sink 6, the microchannel 2 and the heating element 1 can be fully contacted by using the heat sink 6, thereby effectively improving the heat conduction efficiency from the heating element 1 to the phase change material 3 in the microchannel 2; and, by using the arrangement of the heat sink 6, the contact area between the heating element 1 and the air-cooled air is effectively increased, thereby effectively improving the heat conduction efficiency from the heating element 1 to the air; at the same time, since the air-cooled end of the air-cooled component 5 and the heat sink 6 are arranged relative to each other, the air-cooled air and the microchannel 2 can be fully contacted by using the heat sink 6, thereby effectively improving the heat conduction efficiency from the phase change material 3 in the microchannel 2 to the air. Therefore, by arranging the heat sink 6, the heat dissipation efficiency of the converter is further improved.
[0040] It should be noted that the heat sink 6 is used for dissipating heat from the heating element 1 and carrying the microchannel 2. The specific type of the heat sink 6 can be set according to actual needs and is not limited to this. For example, the heat sink 6 can be a metal seat structure adapted to the heating element 1. The heat sink 6 can be arranged on the heating element 1 using thermal conductive adhesive. The heat sink 6 can be provided with a groove body for arranging the microchannel 2.
[0041] like Figure 1 As shown, in some embodiments, the converter further includes: a plurality of heat sinks 7 , the plurality of heat sinks 7 are respectively disposed on the heat sink 6 , and the microchannels 2 are disposed between adjacent heat sinks 7 .
[0042] It can be understood that since multiple heat sinks 7 are respectively arranged on the heat sink 6, and the microchannels 2 are arranged between adjacent heat sinks 7, the heat sink 6 can utilize multiple heat sinks 7 to increase the contact area with the air, thereby effectively improving the thermal conductivity of the phase change material 3 in the microchannel 2 to the air and the thermal conductivity of the heating element 1 to the air, thereby effectively improving the heat dissipation efficiency of the inverter.
[0043] It should be noted that the heat sink 7 is used to increase the contact area between the heat sink 6 and the air. The specific type of the heat sink 7 can be set according to actual needs and is not limited to this. For example, the heat sink 7 can be integrally formed with the heat sink 6, and the heat sink 7 and the heat sink 6 are made of the same metal material, and multiple heat sinks 7 are distributed in a matrix on the heat sink 6.
[0044] In some embodiments, the converter further comprises: a humidity sensor, the detection end of the humidity sensor is arranged on the converter body, and the humidity sensor is used to detect the ambient humidity of the converter body. The signal input end of the control module is connected to the signal output end of the humidity sensor, and the control module is used to reduce the wind speed of the air cooling component 5 when the ambient humidity of the converter body increases, and increase the wind speed of the air cooling component 5 when the ambient humidity of the converter body decreases.
[0045] It can be understood that since the detection end of the humidity sensor is arranged on the inverter body, and the signal input end of the control module is connected to the signal output end of the humidity sensor, the control module can use the humidity sensor to obtain the ambient humidity of the inverter body, and when the ambient humidity of the inverter body increases, the control module reduces the wind speed of the air-cooling component 5, and when the ambient humidity of the inverter body decreases, the control module increases the wind speed of the air-cooling component 5, thereby achieving the adaptation of the wind speed of the air-cooling component 5 to the ambient humidity, thereby ensuring a higher heat dissipation efficiency of the inverter.
[0046] It should be noted that the control module adjusts the operating mode of the air cooling component 5 according to the ambient humidity detected by the humidity sensor. For example, reducing the wind speed of the air cooling component 5 in a high humidity environment can prevent moisture in the air from condensing on the surface of components such as the microchannel 2 and affecting the heat dissipation effect.
[0047] The humidity sensor is used to detect the ambient humidity of the converter body. The specific type of the humidity sensor can be set according to actual needs and is not limited to this.
[0048] In some embodiments, the converter further comprises: a wind speed sensor, the detection end of which is arranged on the converter body, and the wind speed sensor is used to detect the ambient wind speed of the converter body. The signal input end of the control module is connected to the signal output end of the wind speed sensor, and the control module is used to reduce the wind speed of the air cooling component 5 when the ambient wind speed of the converter body increases, and to increase the wind speed of the air cooling component 5 when the ambient wind speed of the converter body decreases.
[0049] It can be understood that since the detection end of the wind speed sensor is arranged on the inverter body, and the signal input end of the control module is connected to the signal output end of the wind speed sensor, the control module can use the wind speed sensor to obtain the ambient wind speed of the inverter body, and when the ambient wind speed of the inverter body increases, the control module reduces the wind speed of the air cooling component 5, and when the ambient wind speed of the inverter body decreases, the control module increases the wind speed of the air cooling component 5, thereby realizing the adaptation of the wind speed of the air cooling component 5 to the ambient wind speed, ensuring the higher heat dissipation efficiency of the inverter while reducing energy consumption.
[0050] It should be noted that the control module adjusts the operating mode of the air-cooling component 5 according to the ambient wind speed detected by the wind speed sensor. Specifically, when the ambient wind speed of the converter body decreases, the wind speed of the air-cooling component 5 is increased to ensure an overall strong heat dissipation capability. When the ambient wind speed of the converter body decreases, the wind speed of the air-cooling component 5 is increased to utilize the natural wind speed to enhance heat dissipation and reduce the energy consumption of the air-cooling component 5.
[0051] The wind speed sensor is used to detect the ambient wind speed of the converter body. The specific type of the wind speed sensor can be set according to actual needs and is not limited to this.
[0052] like Figure 2 As shown, in some embodiments, the converter further includes: a circulation component 8, the liquid outlet end of the circulation component 8 is connected to the liquid inlet end of the microchannel 2, and the liquid inlet end of the circulation component 8 is connected to the liquid outlet end of the microchannel 2, and the detection end of the temperature detection module 4 is arranged at the liquid outlet end of the microchannel 2. Among them, the signal output end of the control module is connected to the signal input end of the circulation component 8, and the control module is used to control the circulation component 8 to open when the temperature in the microchannel 2 exceeds the melting point temperature of the phase change material 3 and the temperature difference reaches a preset value, so as to circulate the liquid phase change material 3 in the microchannel 2.
[0053] It can be understood that, since the liquid outlet end of the circulation component 8 is connected to the liquid inlet end of the microchannel 2, and the liquid inlet end of the circulation component 8 is connected to the liquid outlet end of the microchannel 2, when the phase change material 3 in the microchannel 2 is in liquid state, the circulation component 8 can drive the phase change material 3 to realize a circulating flow, and since the signal output end of the control module is connected to the signal input end of the circulation component 8, the control module can control the switch of the circulation component 8.
[0054] Therefore, when the temperature in the microchannel 2 exceeds the melting point of the phase change material 3 and the temperature difference reaches a preset value, the control module controls the circulation component 8 to open, thereby utilizing the circulating flow of the liquid phase change material 3 to achieve rapid heat dissipation, thereby effectively improving the heat dissipation efficiency of the inverter.
[0055] Among them, since the detection end of the temperature detection module 4 is set at the liquid outlet end of the microchannel 2, the temperature detection module 4 can more accurately detect the temperature change after the phase change material 3 absorbs heat, reflecting the heat dissipation state and the overall temperature condition of the phase change material 3, so as to timely start the air cooling component 5, circulation component 8, etc. for auxiliary heat dissipation.
[0056] It should be noted that when the temperature in the microchannel 2 does not exceed the melting point temperature of the phase change material 3, or when the temperature in the microchannel 2 exceeds the melting point temperature of the phase change material 3 and the temperature difference does not reach the preset value, the circulation component 8 is closed, thereby preventing the circulation component 8 from being damaged by air transportation when the phase change material 3 is in a solid state.
[0057] The specific type of the circulation component 8 can be set according to actual needs, and there is no limitation on this. For example, the circulation component 8 can be a pump body, and the circulation of the liquid phase change material 3 is achieved by the pressurized transportation of the pump body.
[0058] In some embodiments, the microchannel 2 includes: a plurality of first channels, the first channels are arranged on the heating element 1 of the converter body along a first direction, and the plurality of first channels are spaced apart along a second direction, and a phase change material 3 is arranged in the first channel. The first direction and the second direction form a preset angle.
[0059] It can be understood that since the first channel is arranged on the heating element 1 of the inverter body along the first direction, and the multiple first channels are spaced apart along the second direction, the phase change material 3 can be evenly distributed on the heating element 1 of the inverter body by utilizing the arrangement of the multiple first channels, thereby utilizing the conversion between solid and liquid to achieve uniform and efficient heat dissipation of the heating element 1.
[0060] It should be noted that the first channel is used to arrange the phase change material 3 on the heating element 1 , and the specific type of the first channel can be set according to actual needs and is not limited thereto.
[0061] In some embodiments, the microchannel 2 further includes: a plurality of second channels, the second channels are arranged on the heating element 1 of the converter body along the second direction, and the plurality of second channels are spaced apart along the first direction, and the second channels are provided with a phase change material 3. The plurality of first channels and the plurality of second channels are staggered and connected.
[0062] It can be understood that since the second channel is arranged on the heating element 1 of the inverter body along the second direction, and the multiple second channels are spaced apart along the first direction, the phase change material 3 can be evenly distributed on the heating element 1 of the inverter body by utilizing the arrangement of the multiple second channels, thereby utilizing the conversion between solid and liquid to achieve uniform and efficient heat dissipation of the heating element 1.
[0063] Therefore, through the cooperation of the first channel and the second channel, the phase change material 3 is evenly distributed, ensuring efficient heat dissipation of the converter.
[0064] In some embodiments, the phase change material 3 is paraffin, and the melting point of the paraffin is in the range of 30°C-60°C, and the preset value is in the range of 5°C-10°C.
[0065] It can be understood that the heat in the heating element 1 is conducted to the microchannel 2 and heats the paraffin until the paraffin is converted from solid to liquid, thereby achieving heat transfer and further heat dissipation of the inverter body. At the same time, when the temperature in the microchannel 2 exceeds the melting point of the paraffin (the melting point can be any temperature between 30°C and 60°C) and the temperature difference reaches a preset value (the preset value can be any temperature difference between 5°C and 10°C), the control module can control the air cooling component 5 to turn on, so that the paraffin in the microchannel 2 is converted from liquid to solid again, and then continues to absorb the heat of the heating element 1.
[0066] It should be noted that the melting point range of paraffin wax is 30°C-60°C. Specifically, the melting point of paraffin wax can be 30°C, 35°C, 42°C, 53°C, 60°C, etc.
[0067] The preset value ranges from 5°C to 10°C. Specifically, the preset value may be 5°C, 8°C, 9°C, 10°C, etc.
[0068] The embodiment of the present disclosure further provides an offshore wind turbine generator set, including: a converter based on a high-efficiency heat dissipation structure as in the embodiment of the present disclosure.
[0069] It can be understood that since the microchannel 2 is arranged on the heating element 1 of the inverter body and the phase change material 3 is arranged in the microchannel 2, the heat in the heating element 1 can be conducted into the microchannel 2 and heat the phase change material 3 until the phase change material 3 is converted from solid to liquid, thereby realizing heat transfer and further realizing heat dissipation of the inverter body.
[0070] At the same time, since the detection end of the temperature detection module 4 is arranged in the microchannel 2, the control module can use the temperature detection module 4 to obtain the temperature in the microchannel 2. Moreover, since the air-cooling end of the air-cooling component 5 and the microchannel 2 are relatively arranged, the air-cooling component 5 can cool the microchannel 2 by air cooling.
[0071] When the temperature in the microchannel 2 exceeds the melting point of the phase change material 3 and the temperature difference reaches a preset value, the control module can control the air cooling component 5 to turn on, so that the phase change material 3 in the microchannel 2 is converted from liquid to solid again, and then continues to absorb the heat of the heating element 1. Therefore, through the cooperation of the phase change material 3 and the air cooling component 5, the continuous and efficient heat dissipation of the converter is achieved, ensuring that the converter can work stably under high-power operation, thereby achieving efficient and safe operation of the offshore wind turbine.
[0072] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.
[0073] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.
[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0075] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.
Claims
1. A converter based on a high-efficiency heat dissipation structure, characterized in that: include: Converter body; A microchannel, wherein the microchannel is arranged on a heating element of the converter body, and a phase change material is arranged in the microchannel; A temperature detection module, wherein a detection end of the temperature detection module is disposed in the microchannel, and the temperature detection module is used to detect the temperature in the microchannel; An air cooling component, wherein the air cooling component is arranged on the converter body, and an air cooling end of the air cooling component and the microchannel are arranged opposite to each other; A control module is used to control the air cooling component to start when the temperature in the microchannel exceeds the melting point temperature of the phase change material and the temperature difference reaches a preset value.
2. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The converter further comprises: A heat sink is provided on the heating element of the converter body, and the microchannel is provided on the heat sink. The air cooling end of the air cooling component is provided opposite to the heat sink.
3. The converter based on the efficient heat dissipation structure according to claim 2, characterized in that: The converter further comprises: A plurality of heat sinks are respectively arranged on the heat sink, and the microchannels are arranged between adjacent heat sinks.
4. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The converter further comprises: A humidity sensor, wherein a detection end of the humidity sensor is disposed on the converter body, and the humidity sensor is used to detect the ambient humidity of the converter body; Among them, the signal input end of the control module is connected to the signal output end of the humidity sensor, and the control module is used to reduce the wind speed of the air cooling component when the ambient humidity of the converter body increases, and to increase the wind speed of the air cooling component when the ambient humidity of the converter body decreases.
5. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The converter further comprises: A wind speed sensor, wherein a detection end of the wind speed sensor is arranged on the converter body, and the wind speed sensor is used to detect the ambient wind speed of the converter body; Among them, the signal input end of the control module is connected to the signal output end of the wind speed sensor, and the control module is used to reduce the wind speed of the air cooling component when the ambient wind speed of the converter body increases, and increase the wind speed of the air cooling component when the ambient wind speed of the converter body decreases.
6. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The converter further comprises: A circulation component, wherein the liquid outlet of the circulation component is connected to the liquid inlet of the microchannel, and the liquid inlet of the circulation component is connected to the liquid outlet of the microchannel, and the detection end of the temperature detection module is arranged at the liquid outlet of the microchannel; Wherein, the signal output end of the control module is connected to the signal input end of the circulation component, and the control module is used to control the circulation component to open when the temperature in the microchannel exceeds the melting point temperature of the phase change material and the temperature difference reaches the preset value, so as to allow the liquid phase change material in the microchannel to circulate.
7. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The microchannel comprises: A plurality of first channels, wherein the first channels are arranged on the heating element of the converter body along a first direction, and the plurality of first channels are spaced apart and distributed along a second direction, and the phase change material is arranged in the first channels; Wherein, the first direction and the second direction form a preset angle.
8. The converter based on the efficient heat dissipation structure according to claim 7, characterized in that: The microchannel also includes: a plurality of second channels, wherein the second channels are arranged on the heating element of the converter body along the second direction, and the plurality of second channels are spaced apart and distributed along the first direction, and the phase change material is arranged in the second channels; Wherein, a plurality of the first channels and a plurality of the second channels are connected in an alternating manner.
9. The converter based on the efficient heat dissipation structure according to claim 1, characterized in that: The phase change material is paraffin, and the melting point of the paraffin is in the range of 30°C-60°C, and the preset value is in the range of 5°C-10°C.
10. An offshore wind turbine generator system, characterized in that: include: A converter based on a high-efficiency heat dissipation structure as claimed in any one of claims 1 to 9.