Correction method for flow field energy capture direction, flow field energy capture and conversion equipment

Abstract

The present application provides a correction method for flow field energy capture direction, a computer-readable storage medium, a correction system for flow field energy capture direction, and a flow field energy capture and conversion device. The correction method for the flow field energy direction includes: obtaining the detection value of the monitored parameter during the change of the flow field energy direction, and the detection value of the flow field energy direction, the monitored parameter includes the flow field related parameter and / or the operating parameter of the flow field energy capture and conversion device for capturing flow field energy and converting flow field energy. According to the detection value of the monitored parameter, a compensation value is determined. By using the compensation value to compensate for the detection value of the flow field energy direction, the problem of deviation between the detection value of the flow field energy direction and the actual value of the maximum direction of the actual flow field energy can be effectively solved, so that the determined direction of the maximum flow field energy is more accurate, thereby improving the energy conversion efficiency of the flow field energy capture and conversion device.

Description

Technical Field

[0001] The present application relates to the technical field of natural flow field energy conversion, and in particular to a flow field energy capture direction correction method, a computer-readable storage medium, a flow field energy capture direction correction system, and a flow field energy capture and conversion device. Background Art

[0002] With increasing awareness of the environmental degradation caused by fossil fuel use and the need for clean energy conversion in natural flow fields, coupled with advances in new clean energy development technologies, more and more clean new energy sources are being developed and utilized, becoming a key pillar of the energy mix. Within this clean energy architecture, the capture, conversion, and application of energy from natural flow fields is a hot topic in today's energy sector.

[0003] Flow field energy conversion is typically achieved through flow field energy capture and conversion equipment. To improve energy capture efficiency, the equipment must be aligned in the direction of maximum energy tracking and capture. This direction of maximum energy tracking and capture is closely related to the vector direction of the real-time flow field state sensed by the energy capture and conversion equipment, and can be aligned with the direction of maximum flow field energy using a rotating component.

[0004] Due to the fatigue of mechanical components and the random characteristics of the natural flow field, the startup of the rotating components is not continuous. In the single instantaneous flow field direction sensing, there is a deviation between the flow field direction and the actual energy capture direction of the flow field energy capture and conversion device. The statistical average of the single deviation is manifested as an inherent static deviation, and the dynamic deviation around the static deviation is manifested as a discrete distribution. Among them, the installation of the detection component does not use calibration equipment, and there will be deviations caused by installation errors. The actual installation position of the detection component used in the traditional energy capture and conversion device is subject to the rotating flow field disturbance caused by the rotating component, which will produce a random additional deviation between the measured value and the actual value. The random additional deviation is related to the natural terrain, flow field orientation, etc. of each individual energy capture and conversion device, making the random additional deviation more complex. It can be seen that the misalignment of the energy capture direction is a systematic problem that cannot be effectively solved by the existing technology. The existence of the energy capture direction misalignment problem leads to a reduction in the energy capture efficiency of the energy capture and conversion device. Summary of the Invention

[0005] The present application provides a method for correcting the direction of flow field energy capture, a computer-readable storage medium, a system for correcting the direction of flow field energy capture, and a flow field energy capture and conversion device, which can improve the energy conversion efficiency of the flow field energy capture and conversion device.

[0006] This application provides a method for correcting the direction of flow field energy capture, which includes:

[0007] Acquiring detection values ​​of monitored parameters during a change in the direction of flow field energy and the detection value of the flow field energy direction, wherein the monitored parameters include flow field-related parameters and / or operating parameters of a flow field energy capture and conversion device for capturing and converting flow field energy;

[0008] Determining a compensation value based on the detected value of the monitored parameter; and

[0009] The compensation value is used to compensate the detection value of the flow field energy direction.

[0010] Furthermore, the flow field related parameters include one or more of flow field pressure, performance parameters of the flow field energy, and environmental parameters affecting flow field energy density;

[0011] The operating parameters of the flow field energy capture and conversion device include: the rotation speed of the rotating parts of the flow field energy capture and conversion device, an energy conversion amount parameter characterizing the conversion of the flow field energy, and at least one of a change parameter characterizing the change in energy conversion amount.

[0012] Furthermore, determining the compensation value according to the detected value of the monitored parameter includes:

[0013] Determining the maximum value of the characteristic quantity in the process of the change in the direction of the flow field energy according to the detected value of the monitored parameter in the process of the change in the direction of the flow field energy; and

[0014] The compensation value is determined based on the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the maximum value of the characteristic quantity and the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the detection value of the flow field energy direction.

[0015] Furthermore, the determining of the maximum value of the characteristic quantity during the change in the direction of the flow field energy includes:

[0016] Each time the rotating component of the flow field energy capture and conversion device rotates by a set value in the capture direction, a feature quantity is extracted from the detection value of the monitored parameter collected during the rotation of the capture direction by the set value;

[0017] The maximum value among the multiple characteristic quantities in the process of rotating the capture direction change setting value multiple times is determined as the maximum value of the characteristic quantity in the process of the flow field energy direction change at that time.

[0018] Furthermore, determining the compensation value according to the detected value of the monitored parameter includes:

[0019] Determining a plurality of sub-compensation values ​​corresponding to the plurality of flow field energy direction change processes according to the detected values ​​of the monitored parameters during the plurality of flow field energy direction change processes; and

[0020] An average value of the plurality of sub-compensation values ​​is determined to obtain the compensation value.

[0021] Furthermore, after compensating the detection value of the flow field energy direction using the compensation value, the method further includes:

[0022] Determine a change characteristic quantity that characterizes changes in the compensated energy conversion amount and the uncompensated energy conversion amount within a set period under the same operating conditions, wherein the compensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the compensated value of the detection value of the flow field energy direction, and the uncompensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the detection value of the flow field energy direction; and

[0023] If the change characteristic amount of at least one of the set periods is smaller than the change amount threshold, the compensation value is re-determined.

[0024] Furthermore, after determining the compensation value according to the detected value of the monitored parameter, the method further includes:

[0025] storing the compensation value in correspondence with the working condition level during the change of the flow field energy direction;

[0026] Determine the operating condition level of the actual operating condition during the change in the direction of the flow field energy after the save, and obtain the saved compensation value corresponding to the operating condition level; and

[0027] The detected value of the flow field energy direction during the change of the flow field energy direction after being saved is compensated according to the saved compensation value.

[0028] Furthermore, the working condition level is set according to one or more of the magnitude of the performance parameter of the flow field energy, the magnitude of the environmental parameter affecting the flow field energy density, and the flow field orientation parameter.

[0029] The present application provides a computer-readable storage medium having a program stored thereon. When the program is executed by a processor, the method for correcting the flow field energy capture direction as described in any of the above embodiments is implemented.

[0030] The present application provides a flow field energy capture direction correction system, which includes one or more processors for implementing the flow field energy capture direction correction method as described in any of the above embodiments.

[0031] The present application provides a flow field energy capture and conversion device, comprising:

[0032] The device body is used to capture and convert flow field energy, including a rotating component that rotates following the change in the direction of the flow field energy;

[0033] a detection component, provided in the device body, for monitoring the monitored parameter and the flow field energy direction during the change of the flow field energy direction, and generating a detection value of the monitored parameter and a detection value of the flow field energy direction; and

[0034] The correction system for the flow field energy capture direction as described in the above embodiment is connected to the detection component.

[0035] A method for correcting the flow field energy capture direction provided in an embodiment of the present application can effectively solve the problem of deviation between the detected value of the flow field energy direction and the actual value of the maximum direction of the actual flow field energy, so that the determined direction of the maximum flow field energy is more accurate, thereby improving the energy conversion efficiency of the flow field energy capture and conversion equipment.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] Figure 1 Shown is a flow chart of a method for correcting the flow field energy capture direction according to an exemplary embodiment of the present application;

[0039] Figure 2 Shown Figure 1 The first sub-flowchart of the method for correcting the flow field energy capture direction shown;

[0040] Figure 3 Shown Figure 1 The second sub-flowchart of the method for correcting the flow field energy capture direction shown;

[0041] Figure 4 Shown Figure 1 The third sub-flowchart of the method for correcting the flow field energy capture direction shown;

[0042] Figure 5 FIG2 is a flow chart of a method for correcting a flow field energy capture direction according to another exemplary embodiment of the present application;

[0043] Figure 6 FIG2 is a flow chart of a method for correcting a flow field energy capture direction according to another exemplary embodiment of the present application;

[0044] Figure 7 Shown is a schematic structural diagram of a flow field energy capture and conversion device according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0046] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" mean two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar words are for convenience only and are not intended to limit to a single position or spatial orientation. The terms "include" or "comprising" and similar words mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar words are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0047] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0048] The following, in conjunction with the accompanying drawings, describes in detail a method for correcting the direction of flow field energy capture, a computer-readable storage medium, a system for correcting the direction of flow field energy capture, and a flow field energy capture and conversion device according to an embodiment of the present application. The features of the following embodiments and implementations may be combined with each other unless they conflict.

[0049] Figure 1 FIG2 is a flow chart of a method for correcting the direction of flow field energy capture according to an exemplary embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides a method for correcting the direction of flow field energy capture. This method can be applied to flow field energy capture and conversion devices such as wind turbines and ocean current generators. In this embodiment, the method for correcting the direction of flow field energy capture is described using a wind turbine as an example. The method for correcting the direction of flow field energy capture can include steps S101 to S103.

[0050] In step S101 , the detection value of the monitored parameter and the detection value of the flow field energy direction are obtained during the change of the flow field energy direction.

[0051] Among them, the detection value of the flow field energy direction can be represented by the deviation angle of the opposite direction of the flow field flow relative to the current energy capture and conversion device orientation; the direction of the flow field flow can refer to the direction of the wind, the direction of the ocean current, etc. The change in the flow field energy direction can be caused by the action of the deflection component of the flow field energy capture and conversion device, and / or by the change in the flow direction of the flow field energy itself. The monitored parameters include flow field related parameters and / or the operating parameters of the flow field energy capture and conversion device used to capture flow field energy and convert flow field energy. The flow field related parameters mentioned above can refer to the flow field's own parameters such as flow field pressure and flow field energy performance parameters, and can also refer to environmental parameters that can affect the flow field, such as environmental parameters that affect flow field energy density. The flow field energy capture and conversion device can be used to capture flow field energy and convert flow field energy. For example, the flow field energy capture and conversion device can capture wind energy and convert wind energy into electrical energy. The operating parameters of the flow field energy capture and conversion device can refer to energy conversion-related parameters, such as the energy conversion amount parameter for converting flow field energy and the change parameter that characterizes the change in the energy conversion amount. They can also refer to parameters that can affect flow field energy capture and conversion, such as the rotational speed of the device's rotating components. The rotating components rotate to capture and convert flow field energy. When the flow field energy capture and conversion device is a wind turbine, the rotating component is the wind turbine's rotor. In some optional embodiments, the flow field-related parameters include one or more of flow field pressure, flow field energy performance parameters, and environmental parameters that affect flow field energy density. In this embodiment, flow field pressure can refer to wind pressure; flow field energy performance parameters can refer to wind speed and / or wind direction; and environmental parameters that affect flow field energy density can refer to air temperature. The flow field pressure can be obtained by a multi-directional fluid pressure measurement device. The multi-directional fluid pressure measurement device can detect the pressure of wind acting on the rotor surface to determine the detected flow field pressure value. Optionally, the multi-directional fluid pressure measurement device can detect the pressure of wind acting on the rotor surface from all directions. The performance parameters of the flow field energy can be measured by a wind meter or a multi-directional fluid pressure measuring device to obtain the detection value of the performance parameters of the flow field energy. Optionally, the detection value of the performance parameters of the flow field energy can also be set to the average wind speed within 30 seconds and / or the average wind direction within 10 seconds. The environmental parameters that affect the flow field energy density can be measured by a temperature sensor, and the temperature outside the cabin can be measured by the temperature sensor to determine the detection value of the environmental parameters that affect the flow field energy density. The operating parameters of the flow field energy capture and conversion device include: the rotation speed of the rotating parts of the flow field energy capture and conversion device, the blade load that characterizes the stress on the impeller, the energy conversion amount parameter that characterizes the conversion of the flow field energy, and at least one of the change parameter that characterizes the change in the energy conversion amount. In this embodiment, the rotation speed of the rotating part can refer to the rotation speed of the wind wheel in the wind turbine; the energy conversion amount parameter can refer to the conversion amount of wind energy into electrical energy; and the energy conversion amount change parameter can refer to the conversion amount change rate of wind energy into electrical energy.The rotational speed of the rotating component can be obtained by detecting the real-time rotational speed of the wind rotor; the blade load can be detected by a strain gauge sensor; the flow field energy conversion amount can be obtained by detecting the real-time power generation of the wind turbine; and the energy conversion amount change parameter can be obtained by determining the power generation rate of the wind turbine. In some optional embodiments, the flow field-related parameters include flow field pressure, which can represent the flow field-related parameters; the operating parameters of the flow field energy capture and conversion device include the rotational speed of the rotating component of the flow field energy capture and conversion device, which can represent the operating parameters of the flow field energy capture and conversion device.

[0052] The flow field energy direction detection value mentioned above may refer to the direction of the flow field energy detected by the detection component of the flow field energy capture and conversion device. In this embodiment, the flow field energy direction refers to the relative wind direction. When the wind rotor is facing the flow field direction, the flow field energy capture and conversion device captures the maximum flow field energy, and the energy conversion efficiency of the flow field energy capture and conversion device is the highest. The flow field energy direction detection value can be obtained using an anemometer.

[0053] In step S102, a compensation value is determined based on the detected value of the monitored parameter. In related art, the detection components of a flow field energy capture and conversion device are affected by factors such as the rotating flow field disturbance caused by rotating components, the natural terrain where the flow field energy capture and conversion device is located, and the flow field orientation. This can cause a certain deviation between the detected value of the flow field energy direction and the actual value. The compensation value can be determined by detecting the detected value of the monitored parameter.

[0054] In step S103, the compensation value is used to compensate the detected value of the flow field energy direction. As described above, the compensation value is determined based on the detected value of the monitored parameter. The compensation value can be used to compensate the detected value of the flow field energy direction to more accurately determine the direction of maximum flow field energy, thereby improving the energy conversion efficiency of the flow field energy capture and conversion device.

[0055] The embodiment of the present application provides a method for correcting the flow field energy capture direction, which can effectively solve the problem of deviation between the detection value and the actual value of the flow field energy direction, so that the direction with the maximum flow field energy can be determined more accurately, thereby improving the energy conversion efficiency of the flow field energy capture and conversion device. Compared with the application of advanced detection components that are less affected by the outside world and require adjustment and calibration of each flow field energy capture and conversion device installed with the detection component, the present application does not require additional investment in precision measuring instruments, and can automatically collect and compensate detection values ​​during the operation of the flow field energy capture and conversion device, thereby improving the working efficiency of the energy capture and conversion device.

[0056] Figure 2 Shown Figure 1The sub-flowchart of step S102. Figure 2 As shown, in some optional embodiments, step S102 of determining the compensation value according to the detected value of the monitored parameter may further include steps S201 to S202.

[0057] In step S201, the maximum value of the characteristic quantity in the process of the change in the direction of the flow field energy is determined based on the detected value of the monitored parameter during the change in the direction of the flow field energy. During the change in the direction of the flow field energy, the characteristic quantity η can be extracted based on the detected value of the monitored parameter every time the set value β (β can be set to 1°) is changed, as shown in expression (1):

[0058]

[0059] Δx i =x i / x io -1, Δw j =w j / w jo -1, where x i 、w j is the detected value of the monitored parameter during the change of the energy direction of the flow field, x io 、w jo It is the detected value of the monitored parameter before the energy direction of the flow field changes. i and d j The influence factor of the monitored parameter is set according to the influence of the monitored parameter on the detection value of the flow field energy direction. The condition factor y is set for the cause of the change in the flow field energy direction. en , when there is a deflection component action of the flow field energy capture and conversion device, y en =1, otherwise y en =0. In some optional embodiments, the flow field-related parameters include flow field pressure and flow field energy performance parameters; the operating parameters of the flow field energy capture and conversion device include energy conversion parameters that characterize the conversion of flow field energy. Where x1 is the flow field pressure, x2 is the flow field energy conversion parameter, and w1 and w2 are flow field energy performance parameters. In some embodiments, the influence factors c1 = 0.7, c2 = 0.3, d1 = 0.9, d2 = 0.1, and α = 0.5.

[0060] Determine the maximum value of the characteristic quantity during the flow field energy direction change process. That is, select the maximum value of multiple characteristic quantities determined during each flow field energy capture direction change process. Optionally, the maximum value of the characteristic quantity is selected to prioritize the stability of the operating conditions during each flow field energy capture direction change process. If the operating conditions suddenly change during the flow field energy direction change process, the maximum value of the characteristic quantity during the flow field energy direction change process is not considered.

[0061] Figure 3 Shown Figure 2 The sub-flowchart of step S201 is shown in FIG. Figure 3 As shown, in some optional embodiments, step S201 of determining the maximum value of the characteristic quantity in the process of the change of the energy direction of the flow field may further include steps S301 to S302:

[0062] In step S301, each time the rotating component of the flow field energy capture and conversion device rotates to capture the set value of the direction change, a characteristic quantity is extracted from the detection value of the monitored parameter collected during the process of the rotation capture direction change. The direction in which the flow field energy is maximized can be aligned by rotating the rotating component. When the flow field energy capture and conversion device is a wind turbine, the rotating component is the nacelle of the wind turbine, and the nacelle can be rotated by the deflection component so that the wind wheel of the wind turbine, that is, the rotating component, faces the direction in which the flow field energy is maximized. During each change in the flow field energy direction, each time the rotating component of the flow field energy capture and conversion device passes through the rotation capture direction change set value, a characteristic quantity η is extracted from the detection value of the monitored parameter collected during the process of the rotation capture direction change set value, and the characteristic quantity η is extracted according to expression (1). The capture direction change set value is less than the total change value of the flow field energy direction change. During a change in the flow field energy direction, each time the flow field energy direction changes by a smaller value, that is, the capture direction change set value, the detection value of the monitored parameter is collected and the characteristic quantity η is extracted.

[0063] In step S302, the maximum value among the multiple characteristic quantities in the process of rotating and capturing the set value of the direction change is determined as the maximum value of the characteristic quantity in the process of the current flow field energy direction change. The detection value of the monitored parameter in each process of rotating and capturing the set value of the direction change can be collected, and the characteristic quantity η is extracted from the detection value of the monitored parameter collected in each process of rotating and capturing the set value of the direction change. By determining the maximum value among the multiple characteristic quantities η in the process of rotating and capturing the set value of the direction change, it is determined as the maximum value of the characteristic quantity in the process of the current flow field energy direction change, thereby determining the maximum value of the characteristic quantity in the process of the current flow field energy direction change so that η=η in each process of the flow field energy direction change. max The position of the rotating parts of the flow field energy capture and conversion device is determined in this way. The rotating parts determined in this way make the position of the energy capture and conversion device with the highest energy conversion efficiency more accurate, and the compensation value obtained is more accurate.

[0064] Back to Figure 2 In step S202, the compensation value is determined based on the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the maximum value of the characteristic quantity and the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the detected value of the flow field energy direction. That is, η=η is determined. maxThe position of the rotating component of the flow field energy capture and conversion device is φ = find(φ)η max , and the position θ of the rotating component of the flow field energy capture and conversion device corresponding to the detected value of the flow field energy direction ot , determine the compensation value Δφ during the change of energy capture direction, where Δφ=φ-θ ot In this way, the compensation value can be determined according to the detection value of the monitored parameter during the change of the flow field energy direction.

[0065] In some optional embodiments, obtaining the detection value of the monitored parameter during the change of the flow field energy direction includes: obtaining the detection value of no less than a set number of monitored parameters. The number of the detection values ​​of the monitored parameters is relatively large, so that the accuracy of the determined compensation value can be guaranteed. In this embodiment, the upper limit value D is preset in the system. M , by examining whether the number of detection values ​​of the monitored parameters reaches the set upper limit value D M , as the basis for determining whether the detection value of the monitored parameter in the process of obtaining the change of the flow field energy direction is completed. Among them, the upper limit value D M It can be set according to the number of detection values ​​of the monitored parameter during the flow field energy direction change within one month or two months. If the number of detection values ​​of the monitored parameter during the first flow field energy direction change does not reach the upper limit value D M , continue to collect the detection value of the monitored parameter during the second flow field energy direction change process, and collect the detection value of the monitored parameter during the flow field energy direction change process two or more times, until the total number of detection values ​​of the monitored parameter reaches the upper limit value D M According to the maximum value of the characteristic quantity in the process of multiple flow field energy capture direction changes, the compensation value in the process of the flow field energy direction change is determined.

[0066] Figure 4 Shown Figure 1 The sub-flowchart of step S102 is shown in FIG. Figure 4 As shown, in some optional embodiments, the step S102 of determining the compensation value according to the detected value of the monitored parameter may further include steps S401 to S402:

[0067] In step S401, multiple sub-compensation values ​​corresponding to the multiple flow field energy direction change processes are determined based on the detected values ​​of the monitored parameters during the multiple flow field energy direction change processes. For example, based on the detected values ​​of the monitored parameters during the first flow field energy direction change process, a first sub-compensation value Δφ1 is determined for the first flow field direction change process; based on the detected values ​​of the monitored parameters during the second flow field energy direction change process, a second sub-compensation value Δφ2 is determined for the second flow field direction change process; ..., based on the detected values ​​of the monitored parameters during the Nth flow field energy direction change process, an Nth sub-compensation value Δφ is determined for the Nth flow field direction change process. N .

[0068] In step S402, the average value of the plurality of sub-compensation values ​​is determined to obtain a compensation value. opt , take the average value of multiple sub-compensation values, that is Here, the average value of the sub-compensation values ​​whose absolute values ​​are greater than 1 is taken. It can be understood that |Δφ1|>1, |Δφ2|>1...|Δφ N |>1, which eliminates sub-compensation values ​​near 0, making the compensation value more accurate. The compensation value obtained in this way is the average of multiple sub-compensation values. It utilizes the detection values ​​of the monitored parameters during multiple changes in the flow field energy direction. It reflects the centralized trend of the detection value changes of the monitored parameters during multiple changes in the flow field energy direction under the same working conditions, making the compensation value determination more accurate.

[0069] Figure 5 FIG2 is a flow chart of a method for correcting the flow field energy capture direction according to another exemplary embodiment of the present application. Figure 5 As shown, in some optional embodiments, after using the compensation value to compensate the detection value of the flow field energy direction, the method further includes steps S104 to S105:

[0070] In step S104, a change characteristic quantity is determined that characterizes the change in the compensated energy conversion amount and the uncompensated energy conversion amount within a set period under the same operating conditions, wherein the compensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the value after compensation of the detection value of the flow field energy direction, and the uncompensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the detection value of the flow field energy direction. In this embodiment, the above situation is described in detail, and the change characteristic quantity λ that characterizes the change in the compensated energy conversion amount and the uncompensated energy conversion amount within the set period under the same operating conditions is (β-β′) / max(β′,0.1), wherein, under the same operating conditions, β is the compensated energy conversion amount within the set period, and β′ is the uncompensated energy conversion amount within the set period.

[0071] In step 105, if the change characteristic quantity of at least one set period is less than the change threshold, the compensation value is re-determined. If the change characteristic quantity of at least one set period is less than the change threshold, return to step S102, re-determine the new compensation value, and use the new compensation value to compensate the detection value of the flow field energy direction. The method of re-determining the compensation value and using the new compensation value for compensation is the same as the method described above. At least one set period can be one set period, two set periods, or more set periods, and this application does not make specific restrictions. The change threshold can be 0.01. Among them, the smaller the change characteristic quantity, the closer the compensated energy conversion amount is to the uncompensated energy conversion amount value, and the worse the energy conversion effect. The compensation effect of the detection value of the flow field energy direction can be determined by judging the relationship between the change characteristic quantity and the change threshold. If the change characteristic quantity of at least one set period is less than the change threshold, it means that the working condition may have changed and the compensation value needs to be re-determined. In this way, the compensation value of the flow field energy capture and conversion device can be continuously corrected, making the energy conversion efficiency of the flow field energy capture and conversion device higher.

[0072] Figure 6 FIG2 is a flow chart of a method for correcting the flow field energy capture direction according to another exemplary embodiment of the present application. Figure 6 As shown, in some optional embodiments, after determining the compensation value according to the detection value of the monitored parameter, the method for correcting the flow field energy capture direction further includes steps S501 to S503:

[0073] In step S501, the compensation value is saved in correspondence with the working condition level during the change of the flow field energy direction. The working condition level during the current change of the flow field energy direction is determined, and the compensation value is recorded in the corresponding working condition level so that the compensation value and the working condition level are saved in a one-to-one correspondence. In some optional embodiments, the working condition level is set based on one or more of the performance parameters of the flow field energy, the environmental parameters that affect the flow field energy density, and the flow field orientation parameters. Since the setting position of the energy capture and conversion device remains unchanged, the detection value of the flow field energy direction will be mainly affected by the flow field related parameters, such as the flow field's own parameters can affect the environmental parameters that affect the flow field. In this way, the working condition level is set based on one or more of the performance parameters of the flow field energy, the environmental parameters that affect the flow field energy density, and the flow field orientation parameters. Although the number of parameters for setting the working condition level is small, the compensation value can be well limited. In this way, when the compensation value is determined according to the working condition level, the accuracy of the determined compensation value is higher.

[0074] The working condition level is based on the performance parameter S of the flow field energy. i , the environmental parameter K that affects the energy density of the flow field jThe two settings are explained as an example: different working condition levels are set for each parameter, and the performance parameter size S of the flow field energy is i Different working conditions are set in different levels: S1, S2, ..., S N ; The environmental parameter K that affects the energy density of the flow field j Different working conditions are set in different levels: K1, K2, ..., K N The compensation value can be compared with the corresponding flow field energy performance parameter S i , the environmental parameter K that affects the energy density of the flow field j The working condition level is constructed to form a database. For example, the database includes:

[0075] <![CDATA[K1]]> <![CDATA[K2]]> … <![CDATA[K N ]]> <![CDATA[S1]]> <![CDATA[Δφ opt11 ]]> <![CDATA[Δφ opt12 ]]> … <![CDATA[Δφ opt1N ]]> <![CDATA[S2]]> <![CDATA[Δφ opt21 ]]> <![CDATA[Δφ opt22 ]]> … <![CDATA[Δφ opt2N ]]> … … … … … SN <![CDATA[Δφ optN1 ]]> <![CDATA[Δφ optN2 ]]> … <![CDATA[Δφ optNN ]]>

[0076] In step S502, the working condition level of the actual working condition in the process of the flow field energy direction change after saving is determined, and the saved compensation value corresponding to the working condition level is obtained. Determine the working condition level of the actual working condition in the process of the flow field energy direction change after saving, for example: the performance parameter size S of the flow field energy i The working condition level is S1; the environmental parameter K that affects the flow field energy density j The working condition level is K N , we can determine the working condition level of the actual working condition, and directly obtain the saved compensation value Δφ corresponding to the working condition level opt1N .

[0077] In step S503, the detected flow field energy direction value during the subsequent flow field energy direction change is compensated based on the saved compensation value. As described above, compensating the detected flow field energy direction value based on the saved compensation value simplifies and accelerates the determination of the compensation value, reduces the computational effort, saves time, and thereby improves the energy conversion efficiency of the flow field energy capture and conversion device.

[0078] The present application also provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, can implement the method for correcting the flow field energy capture direction described in any of the above embodiments. The computer-readable storage medium may include: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing code, and this application does not impose any restrictions thereon.

[0079] This application provides a flow field energy capture direction correction system, including one or more processors. The processors can call a program in the flow field energy capture direction correction system to implement the flow field energy capture direction correction method described in any of the above embodiments. The processor can be a central processing unit, an application-specific integrated circuit, a digital signal processor, or other device, and this application does not limit it.

[0080] Figure 7 The figure shows a schematic diagram of the structure of a flow field energy capture and conversion device according to an exemplary embodiment of the present application. Figure 7 As shown, the present application provides a flow field energy capture and conversion device 100. The flow field energy capture and conversion device 100 can be a wind turbine, or an ocean current generator, etc., and the present application does not limit it. Figure 7 FIG. 1 shows a case where the flow field energy capture and conversion device 100 is a wind turbine. The flow field energy capture and conversion device 100 includes a device body 10, a detection component 20, and a flow field energy capture direction correction system 30.

[0081] The device body 10 is used to capture and convert flow field energy and includes a rotating component 11 that rotates in response to changes in the direction of the flow field energy. The rotating component 11 may be a nacelle. In some optional embodiments, the device body includes a wind wheel 12, which is disposed at one end of the rotating component 11.

[0082] The detection component 20 is provided on the device body 10, and is used to monitor the monitored parameters and the flow field energy direction during the change of the flow field energy direction, and generate the detection value of the monitored parameter and the detection value of the flow field energy direction. The correction system 30 for the flow field energy capture direction is connected to the detection component 20. The detection value of the monitored parameter and the detection value of the flow field energy direction can be determined by the detection component 20. The problem of the deviation between the detection value of the flow field energy direction and the actual value of the maximum direction of the actual flow field energy can be effectively solved, so that the wind wheel 12 of the rotating component 11 is facing the flow field direction, the flow field energy captured by the flow field energy capture and conversion device 100 is the largest, the energy conversion efficiency of the flow field energy capture and conversion device 100 is the highest, and at the same time, the fatigue stress of the rotating component 11 is reduced.

[0083] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0084] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for correcting the direction of flow field energy capture, characterized in that: include: Acquiring detection values ​​of monitored parameters during a change in the direction of flow field energy and the detection value of the flow field energy direction, wherein the monitored parameters include flow field-related parameters and / or operating parameters of a flow field energy capture and conversion device for capturing and converting flow field energy; determining a compensation value according to the detected value of the monitored parameter; and Using the compensation value, compensating the detection value of the flow field energy direction; Wherein, determining the compensation value according to the detected value of the monitored parameter includes: Determining the maximum value of the characteristic quantity in the process of the change in the direction of the flow field energy according to the detected value of the monitored parameter in the process of the change in the direction of the flow field energy; and Determining the compensation value according to the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the maximum value of the characteristic quantity and the rotation angle of the rotating component of the flow field energy capture and conversion device corresponding to the detection value of the flow field energy direction; wherein the rotation angle is used to represent the position of the rotating component; The flow field related parameters include one or more of flow field pressure, performance parameters of the flow field energy, and environmental parameters that affect flow field energy density; The operating parameters of the flow field energy capture and conversion device include: the rotation speed of the rotating parts of the flow field energy capture and conversion device, the blade load representing the stress on the impeller, the energy conversion amount parameter representing the conversion of the flow field energy, and at least one of the change parameters representing the change in the energy conversion amount.

2. The method for correcting the flow field energy capture direction according to claim 1, characterized in that: Determining the maximum value of the characteristic quantity in the process of the flow field energy direction change includes: Each time the rotating component of the flow field energy capture and conversion device rotates by a set value in the capture direction, a feature quantity is extracted from the detection value of the monitored parameter collected during the rotation of the capture direction by the set value; The maximum value among the multiple characteristic quantities in the process of rotating the capture direction change setting value multiple times is determined as the maximum value of the characteristic quantity in the process of the flow field energy direction change at that time.

3. The method for correcting the flow field energy capture direction according to claim 1, characterized in that: Determining the compensation value according to the detected value of the monitored parameter includes: Determining a plurality of sub-compensation values ​​corresponding to the plurality of flow field energy direction change processes according to the detected values ​​of the monitored parameters during the plurality of flow field energy direction change processes; and An average value of the plurality of sub-compensation values ​​is determined to obtain the compensation value.

4. The method for correcting the flow field energy capture direction according to claim 1, characterized in that: After compensating the detection value of the flow field energy direction using the compensation value, the method further includes: Determine a change characteristic quantity that characterizes changes in the compensated energy conversion amount and the uncompensated energy conversion amount within a set period under the same operating conditions, wherein the compensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the compensated value of the detection value of the flow field energy direction, and the uncompensated energy conversion amount is the energy conversion amount generated by the flow field energy capture and conversion device operating according to the detection value of the flow field energy direction; and If the change characteristic amount of at least one of the set periods is smaller than the change amount threshold, the compensation value is re-determined.

5. The method for correcting the flow field energy capture direction according to claim 1, characterized in that: After determining the compensation value according to the detected value of the monitored parameter, the method further includes: storing the compensation value in correspondence with the working condition level during the change of the flow field energy direction; Determine the operating condition level of the actual operating condition during the change in the direction of the flow field energy after the save, and obtain the saved compensation value corresponding to the operating condition level; and The detected value of the flow field energy direction during the change of the flow field energy direction after being saved is compensated according to the saved compensation value.

6. The method for correcting the flow field energy capture direction according to claim 5, characterized in that: The working condition level is set according to one or more of the magnitude of the performance parameter of the flow field energy, the magnitude of the environmental parameter affecting the flow field energy density, and the flow field orientation parameter.

7. A computer-readable storage medium, characterized in that A program is stored thereon, and when the program is executed by a processor, the method for correcting the flow field energy capture direction as described in any one of claims 1 to 6 is implemented.

8. A flow field energy capture direction correction system, characterized in that: The method comprises one or more processors for implementing the method for correcting the flow field energy capture direction as described in any one of claims 1 to 6.

9. A flow field energy capture and conversion device, characterized in that: include: The device body is used to capture and convert flow field energy, including a rotating component that rotates following the change in the direction of the flow field energy; a detection component, provided in the device body, for monitoring the monitored parameter and the flow field energy direction during the change of the flow field energy direction, and generating a detection value of the monitored parameter and a detection value of the flow field energy direction; and The flow field energy capture direction correction system as described in claim 8 is connected to the detection component.

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