A method, device and medium for selecting a yaw motor and a yaw drive

Abstract

The present application discloses a method, device and medium for selecting a yaw motor and a yaw drive, which are applied to the field of wind power generation. The method obtains the performance requirements of the yaw motor and the yaw drive and the environmental factors of the wind turbine. The performance requirements of the yaw motor and the yaw drive characterize the performance required for the yaw motor and the yaw drive. Environmental factors will affect the performance of the yaw drive. Therefore, the performance parameters of the yaw motor and the yaw drive can be determined according to the performance requirements and environmental factors; and the appropriate yaw motor and yaw drive can be selected according to the performance parameters. This solution conducts a comprehensive analysis of performance requirements and environmental factors to select appropriate yaw motors and yaw drives. On the basis of meeting the performance requirements of the yaw system of the wind turbine, it can save the cost of the yaw motor and the yaw drive.

Description

Technical Field

[0001] The present application relates to the field of wind power generation, and in particular to a method, device and medium for selecting a yaw motor and a yaw drive. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. The equipment required is a wind turbine. Specifically, the wind force is used to drive the windmill blades to rotate, and then the speed of rotation is increased through the speed increaser to enable the wind turbine to generate electricity. In actual application, the direction of the wind changes at any time, and the blades of the windmill may not be aligned with the wind direction. At this time, the yaw system of the wind turbine is needed to adjust the direction of the blades. The yaw system of the wind turbine is also called a wind-facing device. Its function is to enable the wind turbine to quickly and smoothly align with the wind direction when the direction of the wind speed vector changes, so that the blades can obtain the maximum wind energy. The most important equipment in the yaw system of a wind turbine is the yaw motor and yaw drive. At present, no selection criteria for the yaw motor and yaw drive are given.

[0003] The current solution for selecting the yaw motor and yaw drive may easily result in the selection of inappropriate yaw motors and yaw drives. If the performance of the selected equipment is too high, the cost will increase and resources will be wasted. If the performance of the selected equipment is too low, the performance requirements of the yaw system of the wind turbine will not be met.

[0004] It can be seen that how to select a suitable yaw motor and yaw drive is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The purpose of the present application is to provide a method, device and medium for selecting a yaw motor and a yaw drive, so as to select a suitable yaw motor and a yaw drive.

[0006] In order to solve the above technical problems, the present application provides a method for selecting a yaw motor and a yaw drive, comprising:

[0007] Obtain the performance requirements of the yaw motor and yaw drive as well as the environmental factors of the wind turbine;

[0008] Determining performance parameters of the yaw motor and the yaw drive according to the performance requirements, and adjusting the performance parameters according to the environmental factors;

[0009] The yaw motor and the yaw drive are selected according to the performance parameters.

[0010] Preferably, the performance requirements include at least one of the following:

[0011] The number of yaw drives, the maximum torque requirement of the yaw motor, the braking torque requirement of the yaw motor, the maximum torque limit of the yaw motor, the rated speed requirement of the yaw motor, the rotational inertia requirement of the yaw motor, the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than a threshold, and the efficiency requirement of the mechanical transmission mechanism.

[0012] Preferably, determining that the proportion of the time during which the yaw motor operates at rated power to the yaw time of the wind turbine is greater than a threshold comprises:

[0013] Select a target load whose absolute value in the yaw reducer load spectrum is not greater than the product of the rated output torque, the yaw reducer speed ratio and the yaw reducer efficiency;

[0014] The sum of the proportions of the duration of the target load in the yaw reducer load spectrum to the life span of the yaw reducer is greater than the threshold.

[0015] Preferably, determining the performance parameter of the yaw motor according to the performance requirement includes:

[0016] Acquire the torque of the yaw motor based on the fact that the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than the threshold;

[0017] Taking the torque of the yaw motor as a rated torque reference value of the yaw motor;

[0018] Obtaining a rated power reference value of the yaw motor according to the rated torque reference value;

[0019] Selecting a target power level closest to the rated power reference value from the power levels of the motor as the rated power target value of the yaw motor;

[0020] A rated torque target value of the yaw motor is determined according to the rated power target value.

[0021] Preferably, determining the performance parameter of the yaw motor according to the performance requirement includes:

[0022] On the basis that the ratio between the maximum torque and the rated torque of the motor satisfies the value range, a power level that maximizes the ratio is selected from the power level range as the rated power target value.

[0023] Preferably, the environmental factors include: ambient temperature;

[0024] Adjusting the performance parameters of the yaw drive according to the ambient temperature includes:

[0025] Within the preset temperature range, if the ambient temperature is higher than the standard ambient temperature, the rated output current of the yaw drive is reduced.

[0026] Preferably, the environmental factors include: altitude;

[0027] Adjusting the performance parameters of the yaw drive according to the altitude includes:

[0028] Within the preset altitude range, if the altitude is higher than the standard altitude, the rated output current of the yaw drive is reduced.

[0029] In order to solve the above technical problems, the present application also provides a yaw motor and a yaw drive selection device, comprising:

[0030] An acquisition module, used for acquiring performance requirements of the yaw motor and the yaw drive and environmental factors of the wind turbine generator;

[0031] A determination module, configured to determine performance parameters of the yaw motor and the yaw drive according to the performance requirements, and adjust the performance parameters according to the environmental factors;

[0032] A selection module is used to select the yaw motor and the yaw drive according to the performance parameters.

[0033] In order to solve the above technical problems, the present application also provides a yaw motor and a yaw drive selection device, comprising: a memory for storing a computer program;

[0034] The processor is used to implement the steps of the above-mentioned method for selecting the yaw motor and the yaw drive when executing the computer program.

[0035] In order to solve the above technical problems, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned method for selecting a yaw motor and a yaw drive are implemented.

[0036] The method for selecting the yaw motor and yaw drive provided in the present application is achieved by obtaining the performance requirements of the yaw motor and yaw drive and the environmental factors of the wind turbine. The performance requirements of the yaw motor and yaw drive characterize the performance required of the yaw motor and yaw drive. Environmental factors will affect the performance. Therefore, the performance parameters of the yaw motor and yaw drive can be determined according to the performance requirements; and then the performance parameters are adjusted according to the environmental factors, and the appropriate yaw motor and yaw drive can be selected according to the performance parameters. This solution conducts a comprehensive analysis of performance requirements and environmental factors to select appropriate yaw motors and yaw drives. On the basis of meeting the performance requirements of the yaw system of the wind turbine, it can save the cost of the yaw motor and yaw drive.

[0037] The present application also provides a yaw motor and yaw drive selection device and a computer-readable storage medium, which correspond to the above method and thus have the same beneficial effects as the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A flowchart of a method for selecting a yaw motor and a yaw drive provided in an embodiment of the present application;

[0040] Figure 2 A curve diagram showing the relationship between ambient temperature and derating factor provided in an embodiment of the present application;

[0041] Figure 3 A corresponding relationship diagram between altitude, ambient temperature, and derating factor provided in an embodiment of the present application;

[0042] Figure 4 A structural diagram of a yaw motor and a yaw drive selection device provided in an embodiment of the present application;

[0043] Figure 5 A structural diagram of a yaw motor and a yaw drive selection device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The core of this application is to provide a method, device and medium for selecting a yaw motor and a yaw drive, so as to select a suitable yaw motor and a yaw drive.

[0046] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] At present, there is no standard for selecting yaw motors and yaw drives, which makes it easy to select inappropriate yaw motors and yaw drives. If the performance of the selected equipment is too high, it will increase costs and cause waste of resources; if the performance of the selected equipment is too low, it will not meet the performance requirements of the yaw system of the wind turbine. In order to select a suitable yaw motor and yaw drive, the embodiment of the present application provides a specific solution. Figure 1 A flowchart of a method for selecting a yaw motor and a yaw drive provided in an embodiment of the present application, such as Figure 1 As shown, the method includes:

[0048] S10: Obtain the performance requirements of the yaw motor and yaw drive and the environmental factors of the wind turbine.

[0049] In actual application, the direction of wind changes at any time, and the blades of the windmill may not be aligned with the wind direction. At this time, the yaw system of the wind turbine is needed to adjust the direction of the blades. The function of the yaw system is to enable the wind turbine to quickly and smoothly align with the wind direction when the direction of the wind speed vector changes, so that the blades can obtain the maximum wind energy. The most important equipment in the yaw system of the wind turbine is the yaw motor and the yaw drive. The yaw motor and the yaw drive need to be selected according to the performance requirements of the yaw motor and the yaw drive. In addition, environmental factors may also affect the performance of the yaw motor and the yaw drive. Therefore, the performance parameters can also be adjusted according to environmental factors to select more suitable yaw motors and yaw drives. Among them, the performance requirements may specifically include: the number of yaw drives, the maximum torque requirement of the yaw motor, the braking torque requirement of the yaw motor, the maximum torque limit of the yaw motor, the rated speed requirement of the yaw motor, the rotational inertia requirement of the yaw motor, the time when the yaw motor works at the rated power accounts for the proportion of the yaw time of the wind turbine greater than the threshold, and the efficiency requirement of the mechanical transmission mechanism. Environmental factors may include ambient temperature and altitude.

[0050] S11: Determine performance parameters of the yaw motor and the yaw drive according to performance requirements, and adjust the performance parameters according to environmental factors.

[0051] The mechanical transmission system can specifically provide the parameters shown in Table 1 as the performance requirements for the yaw motor selection.

[0052] Table 1 Specific parameters of performance requirements

[0053]

[0054] The parameter types given in Table 1 are only one example of the present application, wherein the 90% yaw integrated time motor torque represents that the time when the yaw motor works at rated power accounts for a proportion of the yaw time of the wind turbine generator that is greater than 90% (i.e., 90% is used as a threshold). That is, the sum of the proportions of the duration of the target load in the yaw reducer load spectrum to the life of the yaw reducer is greater than the threshold, and the load whose absolute value in the yaw reducer load spectrum is not greater than the product of the rated output torque, the yaw reducer speed ratio, and the yaw reducer efficiency is the target load; see formula (1) for details.

[0055] T min ·i yg ·η yg ≥|T oi | (1)

[0056] Where: T mn ——Rated output torque of yaw motor; i yg ——Yaw reducer speed ratio; η yg ——Yaw reducer efficiency; |T oi |——The absolute value of the i-th load in the yaw reducer load spectrum. The duration of each load in the yaw reducer load spectrum accounts for the proportion of the yaw reducer life span p i As shown in formula (2).

[0057]

[0058] Among them, n i ——The duration of the i-th load in the reducer load spectrum, i = 1, 2, 3...

[0059] The percentage p corresponding to the target load i After addition, formula (3) must be satisfied.

[0060] ∑p≥90% (3)

[0061] As shown in formula (3), when the sum of the duration of each load in the yaw reducer load spectrum accounts for more than 90% of the yaw reducer life time, it is determined that the time when the yaw motor works at rated power accounts for more than 90% of the yaw time of the wind turbine. If the selection of the yaw motor meets the above conditions, the yaw motor is properly selected, otherwise the yaw motor needs to be reselected.

[0062] The selection of yaw motors may also include other performance parameters, specifically:

[0063] 1. Determine the rated torque reference value T3: Rated torque reference value: T3≈T2, which can be rounded to 2 decimal places. The meaning of T2 is shown in Table 1, which is the motor torque at 90% yaw integrated time.

[0064] 2. Determine the rated power target value Pe: First, determine the rated power reference value P1 using formula (4).

[0065]

[0066] T3 is the rated torque reference value, n is the rated speed of the motor. According to the national standard GB 4826-1984 motor power level (1.1, 1.5, 2.2, 3, 4, 5.5, 7.5, 11, 15), the motor power closest to P1 is selected as the rated power target value Pe of the yaw motor.

[0067] 3. Determine the rated torque target value Te:

[0068]

[0069] 4. Motor brake torque target value T 制动 :

[0070] T 制动 =T 1制动 (6)

[0071] 5. Motor maximum torque target value T max :

[0072] T max ≥T 1max (7)

[0073] 6. Motor rated speed target value n e :(n e The specific value needs to be selected according to the manual of the alternative motor)

[0074] n e ≈n (8)

[0075] 7. Target value of motor moment of inertia J:

[0076] J=J1 (9)

[0077] According to JB / T 7118-2004, the ratio of the maximum torque to the rated torque of the motor is 2.8 times. Therefore, when selecting the yaw motor, T max / T e ≤2.8. At the same time, the motor power levels corresponding to different frame sizes are specified, and the motor must be selected under the power level corresponding to the frame size. In addition to the determination scheme of the torque target value Te shown in formula (5), another scheme is given here, which is determined as follows:

[0078] ① Determine the optional power level range according to the speed and frame number. Determine the value Te' of each power rated torque according to the optional power range.

[0079] ② Obtain the maximum torque Tmax of the motor.

[0080] ③ Determine the rated torque target value Te. Generally, the value closest to Te' is selected as the alternative rated torque T e Calculate Tmax / T e ”≤2.8, the torque that satisfies the formula and is closest to 2.8 times is selected as the rated torque target value Te of the yaw motor; at the same time, the rated power target value can also be confirmed by the rated torque target value.

[0081] ④ The rated current Ie can also be determined according to the motor product manual.

[0082] In addition, within a certain temperature range, the higher the ambient temperature, the lower the rated output current of the yaw drive. Within a certain altitude range, the higher the altitude, the lower the rated output current of the yaw drive. Therefore, the rated output current of the yaw drive can be selected based on the corresponding relationship between the ambient temperature and the altitude and the rated output current of the yaw drive.

[0083] S12: Select a yaw motor and a yaw drive according to performance parameters.

[0084] Finally, the appropriate yaw motor and yaw drive are selected based on the performance parameters determined above.

[0085] The method for selecting the yaw motor and yaw drive provided in the embodiment of the present application is achieved by obtaining the performance requirements of the yaw motor and yaw drive and the environmental factors of the wind turbine. The performance requirements of the yaw motor and yaw drive characterize the performance required of the yaw motor and yaw drive. Environmental factors will affect the performance. Therefore, the performance parameters of the yaw motor and yaw drive can be determined according to the performance requirements; and then the performance parameters are adjusted according to the environmental factors, and the appropriate yaw motor and yaw drive can be selected according to the performance parameters. This solution conducts a comprehensive analysis of performance requirements and environmental factors to select appropriate yaw motors and yaw drives. On the basis of meeting the performance requirements of the yaw system of the wind turbine, it can save the cost of the yaw motor and yaw drive.

[0086] This embodiment provides a solution, and the performance requirements include at least one of the following: the number of yaw drives, the maximum torque requirement of the yaw motor, the braking torque requirement of the yaw motor, the maximum torque limit of the yaw motor, the rated speed requirement of the yaw motor, the rotational inertia requirement of the yaw motor, the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than a threshold, and the efficiency requirement of the mechanical transmission mechanism.

[0087] Wherein, determining that the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine generator is greater than a threshold value includes: selecting a target load whose absolute value of the load in the yaw reducer load spectrum is not greater than the product of the rated output torque, the yaw reducer speed ratio and the yaw reducer efficiency; and the sum of the proportions of the time when the target load in the yaw reducer load spectrum lasts to the life time of the yaw reducer is greater than a threshold value. For details, please refer to formulas (1), (2) and (3) in the above embodiment. The above embodiment sets the threshold value to 90%, which is not limited in actual application.

[0088] The embodiment of the present application provides a scheme for determining the rated torque target value, and determining the performance parameters of the yaw motor according to the performance requirements includes: obtaining the torque of the yaw motor based on the ratio of the time when the yaw motor works at the rated power to the yaw time of the wind turbine being greater than a threshold; using the torque of the yaw motor as the rated torque reference value of the yaw motor; obtaining the rated power reference value of the yaw motor according to the rated torque reference value; selecting the target power level closest to the rated power reference value from the power level of the motor as the rated power target value of the yaw motor; and determining the rated torque target value of the yaw motor according to the rated power target value. The specific calculation of the rated torque target value can be found in formula (5), which will not be described in detail here.

[0089] Another method for determining the rated torque target value is to determine the performance parameters of the yaw motor according to the performance requirements, including: on the basis that the ratio between the maximum torque and the rated torque of the motor satisfies the value range, selecting the power level that maximizes the ratio from the power level range as the rated power target value. That is, Tmax / T in the above embodiment e ”≤2.8, select the T that satisfies this formula and is closest to 2.8 times e ” is taken as the rated torque target value Te of the yaw motor.

[0090] The embodiment of this application is mainly aimed at the selection of yaw drive. The influence of electric transmission on yaw drive is mainly reflected in the power and rated current of the load motor, as well as the influence of ambient temperature, altitude, switching frequency and heavy-load application. The yaw drive is selected by calculation according to the parameters in the above embodiment.

[0091] The overload multiple requirement N1 for yaw drive:

[0092]

[0093] Maximum output current of yaw drive I max1 The calculation of is as follows:

[0094] I max1 =N×N1×I e (11)

[0095] Rated power requirement of yaw drive P e1 The calculation of is as follows:

[0096] P e1 =N×P e (12)

[0097] Since the voltage is constant, the maximum output current I max1 and rated power demand P e1 They can be converted to each other. If the calculation results of the two are different after conversion, the yaw drive can be selected according to the largest one.

[0098] In addition, environmental factors also have a great impact on the yaw drive. The yaw drive is affected by the ambient temperature and altitude, and various derating states need to be added. This is specifically reflected by the derating factor k. The derating factor varies under different yaw drives. The specific value of the derating factor needs to be checked in the technical manual of the specific drive. Environmental factors include: ambient temperature; the performance parameters of the yaw drive determined according to the ambient temperature include: within the preset temperature range, if the ambient temperature is higher than the standard ambient temperature, the rated output current of the yaw drive is reduced. That is, within the preset temperature range, the higher the ambient temperature, the lower the rated output current of the yaw drive should be. Figure 2 A curve diagram showing the relationship between ambient temperature and derating factor provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, when the temperature range is between +40℃ and 50℃, the rated output current of the selected yaw drive is reduced by 1% for every 1℃ increase in temperature above +40℃. The actual output current is calculated by multiplying the current value of the yaw drive by the derating factor k. In some cases, environmental factors also include: altitude; determining the performance parameters of the yaw drive according to the altitude includes: within the preset altitude range, if the altitude is higher than the standard altitude, the rated output current of the yaw drive is reduced. Within the preset altitude range, the higher the altitude, the lower the rated output current of the yaw drive should be. If the altitude is between 1000 and 4000 meters, the capacity is reduced by 1% for every increase of 100 meters. The output current is calculated by multiplying the current given in the rating table by the derating factor k. The derating factor for x meters (1000m<=x<=4000m) is:

[0099]

[0100] Figure 3 A corresponding relationship diagram between altitude, ambient temperature and derating factor is provided for the embodiment of the present application. It can be seen that the derating factor will change accordingly at different altitudes and different ambient temperatures. If the ambient temperature is lower than 40°C (+104°F), the derating will be reduced by 1.5% for every 1°C (1.8°F) decrease. Figure 3There are several altitude derating curves included. If the temperature is below +40°C, the altitude derating will be reduced. For example, when the temperature is 30°C, the derating factor is 1-1.5%·10=0.85, so at an altitude of more than 4000 meters, the output current can be reduced by 35%. If the temperature effect is not considered, the output current should be 40%.

[0101] In the above embodiments, the selection method of the yaw motor and the yaw drive is described in detail, and the present application also provides embodiments corresponding to the selection device of the yaw motor and the yaw drive. It should be noted that the present application describes the embodiments of the device part from two perspectives, one is based on the functional module perspective, and the other is based on the hardware perspective.

[0102] Based on the perspective of functional modules, this embodiment provides a device for selecting a yaw motor and a yaw drive. Figure 4 The structural diagram of the yaw motor and the yaw drive selection device provided in the embodiment of the present application is as follows: Figure 4 As shown, the device comprises:

[0103] An acquisition module 10 is used to acquire the performance requirements of the yaw motor and the yaw drive and the environmental factors of the wind turbine;

[0104] A determination module 11 is used to determine the performance parameters of the yaw motor and the yaw drive according to the performance requirements, and adjust the performance parameters according to environmental factors;

[0105] The selection module 12 is used to select the yaw motor and the yaw drive according to the performance parameters.

[0106] Since the embodiments of the apparatus part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the apparatus part, which will not be repeated here.

[0107] The yaw motor and the yaw drive selection device provided in this embodiment correspond to the above method and thus have the same beneficial effects as the above method.

[0108] From the perspective of hardware, this embodiment provides another device for selecting a yaw motor and a yaw drive. Figure 5 A structural diagram of a yaw motor and a yaw drive selection device provided in another embodiment of the present application, such as Figure 5 As shown, the yaw motor and yaw drive selection device includes: a memory 20 for storing a computer program;

[0109] The processor 21 is used to implement the steps of the method for selecting the yaw motor and the yaw drive mentioned in the above embodiment when executing the computer program.

[0110] Among them, the processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 can be implemented in at least one hardware form of a digital signal processor (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 21 may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 21 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0111] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used to store the following computer program 201, wherein, after the computer program is loaded and executed by the processor 21, it can implement the relevant steps of the method for selecting the yaw motor and yaw drive disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include but is not limited to data related to the method for selecting the yaw motor and yaw drive, etc.

[0112] In some embodiments, the yaw motor and yaw drive selection device may further include a display screen 22 , an input / output interface 23 , a communication interface 24 , a power supply 25 , and a communication bus 26 .

[0113] Those skilled in the art will appreciate that the structure shown in the figure does not constitute a limitation on the selection device of the yaw motor and the yaw drive, and may include more or fewer components than those shown in the figure.

[0114] The yaw motor and yaw drive selection device provided in the embodiment of the present application includes a memory and a processor. When the processor executes the program stored in the memory, it can implement the following method: a yaw motor and yaw drive selection method.

[0115] The yaw motor and the yaw drive selection device provided in this embodiment correspond to the above method and thus have the same beneficial effects as the above method.

[0116] Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps recorded in the above method embodiment are implemented.

[0117] It is understandable that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0118] The computer-readable storage medium provided in this embodiment corresponds to the above method and thus has the same beneficial effects as the above method.

[0119] The above is a detailed introduction to a yaw motor and yaw drive selection method, device and medium provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0120] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device including the above elements.

Claims

1. A method for selecting a yaw motor and a yaw drive, characterized in that: include: Obtain the performance requirements of the yaw motor and yaw drive as well as the environmental factors of the wind turbine; Determining performance parameters of the yaw motor and the yaw drive according to the performance requirements, and adjusting the performance parameters according to the environmental factors; Selecting the yaw motor and the yaw drive according to the performance parameters; The performance requirements include at least one of the following: The number of yaw drives, the maximum torque requirement of the yaw motor, the braking torque requirement of the yaw motor, the maximum torque limit of the yaw motor, the rated speed requirement of the yaw motor, the moment of inertia requirement of the yaw motor, the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than a threshold, and the efficiency requirement of the mechanical transmission mechanism; Determining the performance parameters of the yaw motor according to the performance requirements includes: Acquire the torque of the yaw motor based on the fact that the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than the threshold; Taking the torque of the yaw motor as a rated torque reference value of the yaw motor; Obtaining a rated power reference value of the yaw motor according to the rated torque reference value; Selecting a target power level closest to the rated power reference value from the power levels of the motor as the rated power target value of the yaw motor; Determining a rated torque target value of the yaw motor according to the rated power target value; Alternatively, on the basis that the ratio between the maximum torque and the rated torque of the motor satisfies the value range, a power level that maximizes the ratio is selected from the power level range as the rated power target value.

2. The method for selecting a yaw motor and a yaw drive according to claim 1, characterized in that: Determining that the proportion of the time during which the yaw motor operates at rated power to the yaw time of the wind turbine generator is greater than a threshold comprises: Select a target load whose absolute value in the yaw reducer load spectrum is not greater than the product of the rated output torque, the yaw reducer speed ratio and the yaw reducer efficiency; The sum of the proportions of the duration of the target load in the yaw reducer load spectrum to the life span of the yaw reducer is greater than the threshold.

3. The method for selecting a yaw motor and a yaw drive according to claim 1, characterized in that: The environmental factors include: ambient temperature; Adjusting the performance parameters of the yaw drive according to the ambient temperature includes: Within the preset temperature range, if the ambient temperature is higher than the standard ambient temperature, the rated output current of the yaw drive is reduced.

4. The method for selecting a yaw motor and a yaw drive according to claim 1, characterized in that: The environmental factors include: altitude; Adjusting the performance parameters of the yaw drive according to the altitude includes: Within the preset altitude range, if the altitude is higher than the standard altitude, the rated output current of the yaw drive is reduced.

5. A device for selecting a yaw motor and a yaw drive, characterized in that: include: An acquisition module, used for acquiring performance requirements of the yaw motor and the yaw drive and environmental factors of the wind turbine generator; A determination module, configured to determine performance parameters of the yaw motor and the yaw drive according to the performance requirements, and adjust the performance parameters according to the environmental factors; A selection module, used for selecting the yaw motor and the yaw drive according to the performance parameters; The performance requirements include at least one of the following: The number of yaw drives, the maximum torque requirement of the yaw motor, the braking torque requirement of the yaw motor, the maximum torque limit of the yaw motor, the rated speed requirement of the yaw motor, the moment of inertia requirement of the yaw motor, the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than a threshold, and the efficiency requirement of the mechanical transmission mechanism; Determining the performance parameters of the yaw motor according to the performance requirements includes: Acquire the torque of the yaw motor based on the fact that the proportion of the time when the yaw motor works at rated power to the yaw time of the wind turbine is greater than the threshold; Taking the torque of the yaw motor as a rated torque reference value of the yaw motor; Obtaining a rated power reference value of the yaw motor according to the rated torque reference value; Selecting a target power level closest to the rated power reference value from the power levels of the motor as the rated power target value of the yaw motor; Determining a rated torque target value of the yaw motor according to the rated power target value; Alternatively, on the basis that the ratio between the maximum torque and the rated torque of the motor satisfies the value range, a power level that maximizes the ratio is selected from the power level range as the rated power target value.

6. A device for selecting a yaw motor and a yaw drive, characterized in that: comprising a memory for storing a computer program; A processor is used to implement the steps of the method for selecting a yaw motor and a yaw drive as described in any one of claims 1 to 4 when executing the computer program.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for selecting a yaw motor and a yaw drive according to any one of claims 1 to 4 are implemented.

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