Wind turbine generator and yaw system

Abstract

The utility model relates to a wind turbine generator and a yaw system. The wind turbine generator comprises a control module and a first solid-state relay. The control module is used for outputting a first control signal; and the first solid-state relay is used for connecting the yaw half-release electromagnetic valve and the power supply module and conducting connection between the yaw half-release electromagnetic valve and the power supply module under the condition of receiving the first control signal so as to conduct a power supply circuit between the power supply module and the yaw half-release electromagnetic valve, so that the yaw half-release electromagnetic valve adjusts the yaw pressure. According to the wind turbine generator set, the first solid-state relay is adopted, the solid-state relay completes the contact function through the solid-state device and can work in the high-impact and vibration environment, the reliability of the wind turbine generator set is improved, and the service life of the wind turbine generator set is prolonged.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to wind turbines and yaw systems. Background Technology

[0002] Wind turbines are a key component of wind power generation technology. Their main function is to maximize the capture and utilization of wind energy by adjusting the direction of the turbine blades to always face the wind. In the yaw system, the wind turbine can control different operating states of the yaw brake, such as yaw partial release and yaw full release.

[0003] Common wind turbine units use selector switches to control different operating states of the yaw brake in the yaw system. Often, the normally open contacts become stuck together and conduct even when not energized, causing the coil to engage normally, but the contacts are already stuck, leading to relay damage. This affects the normal operation of the yaw system. Utility Model Content

[0004] Therefore, it is necessary to provide a wind turbine and yaw system to address the aforementioned technical problems.

[0005] In a first aspect, this application provides a wind turbine generator, comprising:

[0006] The control module is used to output the first control signal;

[0007] A first solid-state relay is used to connect the yaw half-release solenoid valve and the power supply module. When receiving the first control signal, it is used to connect the yaw half-release solenoid valve and the power supply module to connect the power supply line between the power supply module and the yaw half-release solenoid valve, so that the yaw half-release solenoid valve adjusts the yaw pressure.

[0008] In one embodiment, it further includes:

[0009] An overvoltage protection module is connected to the first solid-state relay and the yaw semi-release solenoid valve, respectively, and is used to disconnect the power supply line when the power supply voltage transmitted by the power supply module through the first solid-state relay is greater than a threshold.

[0010] In one embodiment, the power supply module includes a first power supply terminal and a second power supply terminal;

[0011] The first conducting terminal of the first solid-state relay is used to connect to the first power supply terminal, the controlled terminal of the first solid-state relay is connected to the control module, and the second conducting terminal of the first solid-state relay is connected to the first terminal of the overvoltage protection module.

[0012] The second end of the overvoltage protection module is used to connect to the second power supply end, and the third and fourth ends of the overvoltage protection module are both used to connect to the yaw semi-release solenoid valve.

[0013] In one embodiment, the power supply line includes a first power supply line between a first power supply terminal and the yaw half-release solenoid valve, and a second power supply line between a second power supply terminal and the half-release solenoid valve; the overvoltage protection module includes:

[0014] The first overvoltage protection unit is connected to the second conducting terminal of the first solid-state relay and the yaw semi-release solenoid valve, respectively, and is used to disconnect the first power supply line when the power supply voltage output by the power supply module through the first power supply terminal is greater than the first threshold.

[0015] The second overvoltage protection unit is used to connect to the second power supply terminal and to the yaw half-release solenoid valve, and is used to disconnect the second power supply line when the power supply voltage output by the power supply module through the second power supply terminal is greater than the second threshold; the second threshold is less than the first threshold.

[0016] In one embodiment, it further includes:

[0017] A monitoring module, connected to the control module, is used to monitor the wind direction angle of the wind turbine and send the wind direction angle to the control module so that the control module outputs the first control signal when the wind direction angle is greater than a preset angle.

[0018] In one embodiment, the control module is further configured to output a second control signal when the wind direction angle is greater than a preset angle; the wind turbine also includes:

[0019] The second solid-state relay is connected to the control module and is used to connect the power supply module and the yaw full release solenoid valve. Upon receiving the second control signal, it disconnects the connection between the power supply module and the yaw full release solenoid valve.

[0020] In one embodiment, the monitoring module includes a wind vane.

[0021] In one embodiment, the control module includes a digital output module.

[0022] Secondly, this application also provides a yaw system, comprising:

[0023] Power supply module;

[0024] Yaw semi-release solenoid valve;

[0025] As described above, the wind turbine is connected to the power supply module and the yaw semi-release solenoid valve, respectively.

[0026] In one embodiment, it further includes:

[0027] A yaw full release solenoid valve is connected to the wind turbine.

[0028] The aforementioned wind turbine and yaw system include a control module and a first solid-state relay. The control module outputs a first control signal; the first solid-state relay connects the yaw semi-release solenoid valve and the power supply module. Upon receiving the first control signal, the relay establishes the connection between the yaw semi-release solenoid valve and the power supply module, thereby establishing the power supply line between the power supply module and the yaw semi-release solenoid valve, allowing the yaw semi-release solenoid valve to adjust the yaw pressure. The wind turbine of this application uses a first solid-state relay. The solid-state relay performs contact functions through solid-state devices, enabling it to operate in high-impact and high-vibration environments, thus improving the reliability and extending the service life of the wind turbine. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is one of the structural schematic diagrams of a wind turbine generator set in one embodiment of this application;

[0031] Figure 2 This is a second schematic diagram of the structure of a wind turbine generator in one embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the overvoltage protection module in one embodiment of this application;

[0033] Figure 4 This is the third schematic diagram of the structure of a wind turbine generator in one embodiment of this application.

[0034] Explanation of icon numbers:

[0035] 100: Wind turbine generator set; 110: Control module; 120: First solid-state relay; 130: Overvoltage protection module; 131: First overvoltage protection unit; 132: Second overvoltage protection unit; 140: Monitoring module; 150: Second solid-state relay; 200: Power supply module; 300: Yaw half-release solenoid valve; 400: Yaw full-release solenoid valve. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] In one embodiment, see Appendix Figure 1 , attached Figure 1 One of the structural schematic diagrams of the wind turbine generator set 100 in this embodiment is shown. The wind turbine generator set 100 in this embodiment includes a control module 110 and a first solid-state relay 120. The control module 110 is used to output a first control signal; the first solid-state relay 120 is used to connect the yaw half-release solenoid valve 300 and the power supply module 200, and is used to conduct the connection between the yaw half-release solenoid valve 300 and the power supply module 200 when receiving the first control signal, so as to conduct the power supply line between the power supply module 200 and the yaw half-release solenoid valve 300, so that the yaw half-release solenoid valve 300 adjusts the yaw pressure.

[0043] The control module 110 refers to a processor module capable of outputting an electrical signal with a driving function. For example, the control module 110 can receive externally input wind speed and direction via a communication line, and use internally configured comparators and other circuits to judge this wind speed and direction information. When preset conditions are met, it outputs a first control signal of a preset level, driving the first solid-state relay 120 to connect the yaw half-release solenoid valve 300 and the power supply module 200, thereby connecting the power supply line between the power supply module 200 and the yaw half-release solenoid valve 300, allowing the yaw half-release solenoid valve 300 to adjust the yaw pressure.

[0044] The first solid-state relay 120 is a contactless electronic switching device that uses semiconductor devices instead of traditional electrical contacts as switching devices. It can open and close more sensitively, has no mechanical contact, and has a longer service life.

[0045] The yaw semi-release solenoid valve 300 starts working under the power supply module 200. During yaw, in order to ensure the stability and controllability of the nacelle, a certain damping force needs to be provided to the yaw brake. The yaw semi-release solenoid valve 300 can regulate the pressure of the yaw brake by controlling the flow of oil, thereby controlling the damping force during yaw. By controlling the pressure of the yaw brake, the yaw semi-release solenoid valve 300 helps to reduce the load on the unit under storm conditions, while avoiding the yaw gear being impacted by external loads, thus improving the safety of the yaw system.

[0046] In this embodiment, the wind turbine 100 adopts a first solid-state relay 120. The solid-state relay completes the contact function through solid-state devices, and can work in high-impact and vibration environments, thereby improving the reliability of the wind turbine 100 and extending its service life.

[0047] In one embodiment, see Appendix Figure 2 , attached Figure 2 The second schematic diagram of the wind turbine 100 in this embodiment is shown. The wind turbine 100 in this embodiment also includes an overvoltage protection module 130, which is connected to the first solid-state relay 120 and the yaw semi-release solenoid valve 300, and is used to disconnect the power supply line when the power supply voltage transmitted by the power supply module 200 through the first solid-state relay 120 is greater than a threshold.

[0048] The overvoltage protection module 130 can be any circuit or module capable of disconnecting the circuit when the voltage flowing through it exceeds a preset threshold. For example, the overvoltage protection module 130 can be a resettable fuse, a ceramic gas discharge tube, a glass discharge tube, a semiconductor discharge tube, etc., and is not limited to these.

[0049] In this embodiment, the first solid-state relay 120 and the yaw semi-release solenoid valve 300 are equipped with an overvoltage protection module 130. When the power supply voltage transmitted by the power supply module 200 through the first solid-state relay 120 is greater than the threshold, the power supply line is disconnected, which can ensure the safe operation of the wind turbine 100 and improve the safety of the wind turbine 100.

[0050] In one embodiment, the power supply module includes a first power supply terminal and a second power supply terminal; the first conducting terminal of the first solid-state relay is used to connect to the first power supply terminal, the controlled terminal of the first solid-state relay is connected to the control module, and the second conducting terminal of the first solid-state relay is connected to the first terminal of the overvoltage protection module; the second terminal of the overvoltage protection module is used to connect to the second power supply terminal, and the third and fourth terminals of the overvoltage protection module are both used to connect to the yaw semi-release solenoid valve.

[0051] In this embodiment, the power supply module supplies power to the yaw half-release solenoid valve through the first power supply terminal and the second power supply terminal. The power supply voltage output by the first power supply terminal is greater than the power supply voltage output by the second power supply terminal. The overvoltage protection module is connected to the second conducting terminal of the first solid-state relay and the yaw half-release solenoid valve respectively, so as to prevent the first power supply terminal from outputting an abnormally large voltage to the yaw half-release solenoid valve when the first solid-state relay is conducting, which would damage the yaw half-release solenoid valve.

[0052] In one embodiment, the power supply line includes a first power supply line between a first power supply terminal and the yaw half-release solenoid valve 300, and a second power supply line between a second power supply terminal and the half-release solenoid valve.

[0053] See appendix Figure 3 , attached Figure 3 A schematic diagram of the overvoltage protection module 130 in this embodiment is shown. The overvoltage protection module 130 in this embodiment includes a first overvoltage protection unit 131 and a second overvoltage protection unit 132. The first overvoltage protection unit 131 is connected to the second conducting terminal of the first solid-state relay 120 and the yaw half-release solenoid valve 300, and is used to disconnect the first power supply line when the power supply voltage output by the power supply module 200 through the first power supply terminal is greater than a first threshold. The second overvoltage protection unit 132 is connected to the second power supply terminal and to the yaw half-release solenoid valve 300, and is used to disconnect the second power supply line when the power supply voltage output by the power supply module 200 through the second power supply terminal is greater than a second threshold; the second threshold is less than the first threshold.

[0054] In this embodiment, when the first solid-state relay 120 is turned on, the first overvoltage protection unit 131 monitors the power supply voltage output from the first power supply terminal of the power supply module 200. When the power supply voltage output from the first power supply terminal is greater than a first threshold, the power supply line between the first power supply terminal and the yaw half-release solenoid valve 300 is disconnected to ensure monitoring of higher power supply voltages. Furthermore, in this embodiment, the second overvoltage protection unit 132 connects the second power supply terminal and the yaw half-release solenoid valve 300 to monitor the power supply voltage output from the second output terminal. When the power supply voltage output from the second power supply terminal is greater than a second threshold, the power supply line between the first power supply terminal and the yaw half-release solenoid valve 300 is disconnected to ensure monitoring of lower power supply voltages. This ensures that the power supply voltages supplied to the yaw half-release solenoid valve 300 from both power supply terminals are below the corresponding thresholds, thus ensuring power supply safety.

[0055] In one embodiment, see Appendix Figure 4 , attached Figure 4 The third schematic diagram of the wind turbine 100 in this embodiment is shown. The wind turbine 100 in this embodiment also includes a monitoring module 140. The monitoring module 140 is connected to the control module 110 and is used to monitor the wind direction angle of the wind turbine 100 and send the wind direction angle to the control module 110 so that the control module 110 outputs a first control signal when the wind direction angle is greater than a preset angle.

[0056] The monitoring module 140 can be any instrument, circuit, etc., capable of monitoring the wind direction angle of the wind turbine 100. For example, the monitoring module 140 can be a wind vane.

[0057] In this embodiment, the monitoring module 140 monitors the wind direction angle of the wind turbine 100. The control module 110 compares the electrical parameters (such as voltage / current of electrical signals) collected by the monitoring module 140 corresponding to the wind direction angle with the electrical parameters corresponding to the preset angle through the built-in comparator. When the wind direction angle is greater than the preset angle, the control module 110 outputs a first control signal to control the first solid-state relay 120 to conduct the power supply line between the power supply module 200 and the yaw semi-release solenoid valve 300, so that the semi-release solenoid valve adjusts the yaw pressure under the power supply of the power supply module 200, thereby improving the self-adjusting working capability of the wind turbine 100.

[0058] In one embodiment, the control module 110 is further configured to output a second control signal when the wind direction angle is greater than a preset angle. (See appendix for further details.) Figure 4 In this embodiment, the wind turbine 100 also includes a second solid-state relay 150. The second solid-state relay 150 is connected to the control module 110 and is used to connect the power supply module 200 and the yaw full release solenoid valve 400. Upon receiving a second control signal, it disconnects the connection between the power supply module 200 and the yaw full release solenoid valve 400.

[0059] The second solid-state relay 150 is the same as the first solid-state relay 120. Both are contactless electronic switching devices that use semiconductor devices instead of traditional electrical contacts as switching devices. They can be opened and closed more sensitively, have no mechanical contact, and have a longer service life.

[0060] The yaw full release solenoid valve 400 is mainly responsible for controlling the pressure release of the yaw brake to achieve basic actions such as full-pressure braking, damped yaw, and zero-pressure release of the mooring in the cabin.

[0061] The second control signal can be an electrical signal with a different level from the first control signal. When the comparator configured in the control module 110 compares the electrical parameters corresponding to the wind direction angle and finds that they are greater than the electrical parameters corresponding to the preset angle, it outputs the second control signal to control the second solid-state relay 150 to disconnect the connection between the power supply module 200 and the yaw full release solenoid valve 400.

[0062] In this embodiment, the connection between the power supply module 200 and the yaw full release solenoid valve 400 can be stably selected by the second solid-state relay 150, ensuring the safe operation of the wind turbine 100.

[0063] In one embodiment, the monitoring module includes a wind vane.

[0064] In this embodiment, the wind direction angle of the wind turbine is accurately monitored by an anemometer, thereby enabling the wind turbine to accurately control the operation of the yaw half-release solenoid valve and the yaw full-release solenoid valve.

[0065] In one embodiment, the control module includes a digital output module.

[0066] For example, the digital output module may be Beckhoff EL2809D06 digital output module, but is not limited thereto.

[0067] In this embodiment, driving the first solid-state relay to open and close via the digital output module can improve the driving speed of the first solid-state relay, promptly connect the power supply line between the power supply module and the yaw half-release solenoid valve, and improve the sensitivity of the power supply unit.

[0068] Furthermore, when the wind turbine also includes a second solid-state relay, the digital output module can quickly drive the second solid-state relay and guide the power supply module and the power supply line between the yaw full release solenoid valve, thereby improving the sensitivity of the power supply unit.

[0069] In one embodiment, an overvoltage protection module, consistent with any of the above embodiments, can also be provided between the second solid-state relay and the yaw full release solenoid valve to ensure that the power supply voltage connected to the yaw full release solenoid valve is within a safe range, thereby ensuring the power supply safety of the wind turbine.

[0070] In one embodiment, the yaw system includes a power supply module, a yaw semi-release solenoid valve, and a wind turbine as described in any of the above embodiments. The wind turbine is connected to both the power supply module and the yaw semi-release solenoid valve.

[0071] In this embodiment, the yaw system includes the wind turbine generator set in any of the above embodiments. If the wind turbine generator set has further technical effects, the yaw system in this embodiment also has correspondingly further technical effects.

[0072] In one embodiment, the yaw system further includes a yaw full-release solenoid valve. The yaw full-release solenoid valve is connected to the wind turbine.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A wind turbine generator set, characterized in that, include: The control module is used to output the first control signal; A first solid-state relay is used to connect the yaw half-release solenoid valve and the power supply module. When receiving the first control signal, it is used to connect the yaw half-release solenoid valve and the power supply module to connect the power supply line between the power supply module and the yaw half-release solenoid valve, so that the yaw half-release solenoid valve adjusts the yaw pressure.

2. The wind turbine generator set according to claim 1, characterized in that, Also includes: An overvoltage protection module is connected to the first solid-state relay and the yaw semi-release solenoid valve, respectively, and is used to disconnect the power supply line when the power supply voltage transmitted by the power supply module through the first solid-state relay is greater than a threshold.

3. The wind turbine generator set according to claim 2, characterized in that, The power supply module includes a first power supply terminal and a second power supply terminal; The first conducting terminal of the first solid-state relay is used to connect to the first power supply terminal, the controlled terminal of the first solid-state relay is connected to the control module, and the second conducting terminal of the first solid-state relay is connected to the first terminal of the overvoltage protection module. The second end of the overvoltage protection module is used to connect to the second power supply end, and the third and fourth ends of the overvoltage protection module are both used to connect to the yaw semi-release solenoid valve.

4. The wind turbine generator set according to claim 3, characterized in that, The power supply line includes a first power supply line between the first power supply terminal and the yaw half-release solenoid valve and a second power supply line between the second power supply terminal and the half-release solenoid valve. The overvoltage protection module includes: The first overvoltage protection unit is connected to the second conducting terminal of the first solid-state relay and the yaw semi-release solenoid valve, respectively, and is used to disconnect the first power supply line when the power supply voltage output by the power supply module through the first power supply terminal is greater than the first threshold. The second overvoltage protection unit is used to connect to the second power supply terminal and to the yaw half-release solenoid valve, and is used to disconnect the second power supply line when the power supply voltage output by the power supply module through the second power supply terminal is greater than the second threshold; the second threshold is less than the first threshold.

5. The wind turbine generator set according to claim 1, characterized in that, Also includes: A monitoring module, connected to the control module, is used to monitor the wind direction angle of the wind turbine and send the wind direction angle to the control module so that the control module outputs the first control signal when the wind direction angle is greater than a preset angle.

6. The wind turbine generator set according to claim 5, characterized in that, The control module is also used to output a second control signal when the wind direction angle is greater than a preset angle; the wind turbine also includes: The second solid-state relay is connected to the control module and is used to connect the power supply module and the yaw full release solenoid valve. Upon receiving the second control signal, it disconnects the connection between the power supply module and the yaw full release solenoid valve.

7. The wind turbine generator set according to claim 5, characterized in that, The monitoring module includes a wind vane.

8. The wind turbine generator set according to claim 1, characterized in that, The control module includes a digital output module.

9. A yaw system, characterized in that, include: Power supply module; Yaw semi-release solenoid valve; The wind turbine generator set as described in any one of claims 1 to 8 is connected to the power supply module and the yaw semi-release solenoid valve, respectively.

10. The yaw system according to claim 9, characterized in that, Also includes: A yaw full release solenoid valve is connected to the wind turbine.

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