Magnetic suspension force determination method and device, storage medium and computer program product

Abstract

The invention discloses a magnetic suspension force determination method and device, a storage medium and a computer program product, and relates to the field of wind power engineering, and the magnetic suspension force determination method comprises the steps: determining the maximum bending moment force which can be resisted by a wind wheel according to the maximum wind power and the farthest force arm borne by the wind wheel in the rotation process of a historical time period; the size of a permanent magnet in the passive magnetic suspension bearing is determined according to the maximum bending moment force and the weight of the wind wheel, the fixed part of the passive magnetic suspension bearing is arranged on the outer side of the wind wheel, and the rotating part of the passive magnetic suspension bearing is arranged on the inner side of the wind wheel; the magnetic suspension force of the passive magnetic suspension bearing is determined according to the size of the permanent magnet, and the magnetic suspension force is used for suspending the wind wheel at the target height. By the adoption of the technical scheme, the problem that in the prior art, due to the fact that the main bearing of the vertical-axis wind turbine makes contact with the wind wheel, the main bearing bears huge loads, and mechanical abrasion of the main bearing is caused is solved.

Description

Technical Field

[0001] The present application relates to the field of wind power engineering, and more specifically, to a method and device for determining magnetic levitation force, a storage medium, and a computer program product. Background Art

[0002] In traditional wind turbine designs, the wind rotor usually has direct or indirect mechanical contact with the main bearing of the vertical axis wind turbine. Therefore, as the core component that supports the rotation of the wind rotor, the main bearing of the vertical axis wind turbine must withstand the gravity of the wind rotor, the bending moment caused by the wind, and the friction during the rotation process, which causes the main bearing to bear a huge load, causing the contact surface inside the main bearing of the vertical axis wind turbine to wear more severely, reducing the service life of the main bearing.

[0003] In the related technology, the contact between the main bearing and the wind wheel of the vertical axis wind turbine causes the main bearing to bear a huge load, resulting in the problem of mechanical wear of the main bearing. No effective solution has been proposed so far.

[0004] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the invention

[0005] The embodiments of the present application provide a method and device for determining magnetic levitation force, a storage medium and a computer program product, so as to at least solve the problem in the related art that the contact between the main bearing and the wind wheel of the vertical axis wind turbine causes the main bearing to bear a huge load, resulting in mechanical wear of the main bearing.

[0006] According to one aspect of an embodiment of the present application, a method for determining a magnetic levitation force is provided, comprising: determining a maximum bending moment that the wind wheel can withstand based on a maximum wind force and a maximum lever arm that the wind wheel is borne during rotation in a historical time period; determining a volume of a permanent magnet in a passive magnetic bearing based on the maximum bending moment and the weight of the wind wheel, wherein a fixed portion of the passive magnetic bearing is disposed on an outer side of the wind wheel, and a rotating portion of the passive magnetic bearing is disposed on an inner side of the wind wheel; determining a magnetic levitation force of the passive magnetic bearing based on the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0007] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: acquiring the current position of the wind wheel through a first sensor, wherein the first sensor is arranged on a radial positioning bearing, and the radial positioning bearing is arranged on the outside of the passive magnetic bearing; determining whether the current position deviates from the target position of the wind wheel.

[0008] In an exemplary embodiment, after determining whether the current position deviates from the target position of the wind wheel, the method further includes: when it is determined that the current position deviates from the target position, adjusting the radial gap between the wind wheel and the rotation axis of the wind wheel by means of a fine-tuning component in the radial positioning bearing and a deviation between the current position and the target position to stabilize the wind wheel at the target position.

[0009] In an exemplary embodiment, the maximum bending moment that the wind rotor can withstand is determined based on the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during rotation in a historical time period, including: obtaining the maximum wind force and the farthest lever arm through a second sensor, wherein the second sensor is disposed on the wind rotor; and determining the maximum bending moment M according to the following formula: M=F*H, wherein F is the maximum wind force, and H is the farthest lever arm.

[0010] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: acquiring the current temperature of the permanent magnet through a third sensor, wherein the third sensor is arranged on the permanent magnet; when the current temperature exceeds a preset temperature, transmitting a cooling medium to the permanent magnet through a cooling channel in the passive magnetic bearing, and when the current temperature is lower than the preset temperature, stopping transmitting the cooling medium.

[0011] In an exemplary embodiment, after the cooling medium is transmitted to the permanent magnet through the cooling channel in the passive magnetic bearing, the method further includes: obtaining again the current temperature of the permanent magnet that has received the cooling medium; when the current temperature obtained again still exceeds the preset temperature, starting the alarm device set for the permanent magnet, and generating an early warning report based on the temperature obtained by the third sensor; encrypting the early warning report to obtain an encrypted early warning report; transmitting the encrypted early warning report to a mobile device of a target object that maintains the wind wheel to instruct the target object to detect the passive magnetic bearing.

[0012] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: determining a power supply set for multiple electrical devices in the passive magnetic bearing, wherein the power supply is used to store electrical energy converted from solar energy, and the multiple electrical devices include: a third sensor, an alarm device, the third sensor is used to obtain the temperature of the permanent magnet, and the alarm device is used to indicate that the permanent magnet, a target object for maintaining the wind wheel, has an abnormality; when the remaining power of some or all of the multiple electrical devices is less than a preset value, the power supply is started to supply power to the some or all of the electrical devices.

[0013] According to another aspect of an embodiment of the present application, a device for determining a magnetic levitation force is also provided, comprising: a first determination module, for determining a maximum bending moment that the wind wheel can withstand based on the maximum wind force and the farthest lever arm that the wind wheel is borne during rotation in a historical time period; a second determination module, for determining the volume of a permanent magnet in a passive magnetic bearing based on the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel; a third determination module, for determining the magnetic levitation force of the passive magnetic bearing based on the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0014] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned method for determining the magnetic levitation force when running.

[0015] According to another aspect of the embodiment of the present application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for determining the magnetic levitation force through the computer program.

[0016] According to another aspect of the embodiments of the present application, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps of the method described in each embodiment of the present application are implemented.

[0017] Through this application, the maximum bending moment that the wind rotor can withstand is determined according to the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period; the volume of the permanent magnet in the passive magnetic suspension bearing is determined according to the maximum bending moment and the weight of the wind rotor; the magnetic suspension force of the passive magnetic suspension bearing is determined according to the volume of the permanent magnet, wherein the magnetic suspension force is used to suspend the wind rotor at the target height. This solves the problem in the related art that the main bearing of the vertical axis wind turbine is in contact with the wind rotor, causing the main bearing to bear a huge load and resulting in mechanical wear of the main bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a hardware structure block diagram of a computer terminal of a method for determining magnetic levitation force according to an embodiment of the present application;

[0021] Figure 2 is a flow chart of a method for determining magnetic levitation force according to an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of a method for determining a magnetic levitation force according to an embodiment of the present application;

[0023] Figure 4 It is a structural block diagram of a device for determining magnetic levitation force according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of this application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The method embodiments provided in the embodiments of the present application can be executed in a vertical axis wind turbine or a similar computing device. Taking the operation on a vertical axis wind turbine as an example, Figure 1 FIG. 1 is a hardware structure diagram of a vertical axis wind turbine of a method for determining magnetic levitation force according to an embodiment of the present application. Figure 1 As shown, the vertical axis wind turbine may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor (Central Processing Unit, MCU) or a programmable logic device (Field Programmable Gate Array, FPGA)) and a memory 104 for storing data, wherein the vertical axis wind turbine may also include a transmission device 106 for communication functions and an input and output device 108. A person skilled in the art will understand that Figure 1 The structure shown is for illustration only and does not limit the structure of the vertical axis wind turbine. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for determining the magnetic levitation force in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the vertical axis wind turbine via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0028] A wireless network provided by a communication provider of a vertical axis wind turbine. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0029] In this embodiment, a method for determining magnetic levitation force is provided, which is applied to the vertical axis wind turbine mentioned above. Figure 2 is a flow chart of a method for determining magnetic levitation force according to an embodiment of the present application. Figure 2 As shown, the process includes the following steps:

[0030] Step S202, determining the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period;

[0031] Step S204, determining the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel;

[0032] Step S206: determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0033] Through the above steps, the maximum bending moment that the wind wheel can resist is determined according to the maximum wind force and the farthest lever arm that the wind wheel is subjected to during the rotation process of the historical time period; the volume of the permanent magnet in the passive magnetic bearing is determined according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel; the magnetic levitation force of the passive magnetic bearing is determined according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at the target height. This solves the problem in the related art that the contact between the main bearing of the vertical axis wind motor and the wind wheel causes the main bearing to bear a huge load, resulting in mechanical wear of the main bearing.

[0034] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: acquiring the current position of the wind wheel through a first sensor, wherein the first sensor is arranged on a radial positioning bearing, and the radial positioning bearing is arranged on the outside of the passive magnetic bearing; determining whether the current position deviates from the target position of the wind wheel.

[0035] The first sensor is mounted on a radial positioning bearing, which is located outside the passive magnetic suspension bearing. This layout enables the first sensor to directly monitor the radial position of the wind wheel relative to its rotation axis. The first sensor continuously collects the current position data of the wind wheel. These position data include the distance between the wind wheel and the rotation axis and the offset angle of the wind wheel. In addition, the target position of the wind wheel refers to the position where the wind wheel should be stably suspended under ideal conditions. This target position is usually pre-set based on the design parameters of the wind wheel and the characteristics of the passive magnetic suspension system. By comparing the current position of the wind wheel collected by the first sensor with the target position, it can be determined whether the wind wheel has deviated and the degree of deviation.

[0036] In an exemplary embodiment, after determining whether the current position deviates from the target position of the wind wheel, the method further includes: when it is determined that the current position deviates from the target position, adjusting the radial gap between the wind wheel and the rotation axis of the wind wheel by means of a fine-tuning component in the radial positioning bearing and a deviation between the current position and the target position to stabilize the wind wheel at the target position.

[0037] When it is detected that the wind rotor position deviates from the target position, the fine-tuning component in the radial locating bearing will be activated. The fine-tuning component can be electric or hydraulic, and by controlling certain parts of the radial locating bearing (such as the radial support arm or the adjustment screw), the radial clearance between the wind rotor and the rotating shaft is changed to correct the position deviation of the wind rotor and return it to the target position. By continuously monitoring the current position of the wind rotor and making fine adjustments as needed, the stable suspension of the wind rotor in the passive magnetic suspension system can be ensured. This dynamic adjustment mechanism is the key to the passive magnetic bearing system's ability to cope with changes in the external environment (such as fluctuations in wind speed and wind direction), thereby keeping the wind rotor operating under optimal conditions and improving the efficiency and reliability of wind power generation.

[0038] The passive magnetic bearing system works together with the first sensor on the radial positioning bearing to form a closed-loop control system. The first sensor is used to detect deviations, while the fine-tuning component is used to correct deviations. They work together on the wind wheel to ensure that the wind wheel operates stably in the preset magnetic suspension state.

[0039] In an exemplary embodiment, the maximum bending moment that the wind rotor can withstand is determined based on the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during rotation in a historical time period, including: obtaining the maximum wind force and the farthest lever arm through a second sensor, wherein the second sensor is disposed on the wind rotor; and determining the maximum bending moment M according to the following formula: M=F*H, wherein F is the maximum wind force, and H is the farthest lever arm.

[0040] The second sensor monitors the wind speed around the wind rotor, and determines the maximum wind force F acting on the wind rotor through parameters such as wind speed, wind rotor cross-sectional area and wind coefficient. At the same time, the second sensor can obtain the maximum lever arm H of the wind rotor, where the farthest lever arm H refers to the farthest distance from the point where the wind acts on the wind rotor to the axis of rotation of the wind rotor. According to the principles of mechanics, the bending moment M can be calculated by multiplying the maximum wind force F by the farthest lever arm H. The formula M=F*H indicates that the bending moment force exerted on the wind rotor is proportional to the maximum wind force acting on it, and is also proportional to the lever arm distance from the point where the wind acts to the axis of rotation. This means that the greater the wind force or the longer the lever arm, the greater the bending moment force exerted on the wind rotor.

[0041] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: acquiring the current temperature of the permanent magnet through a third sensor, wherein the third sensor is arranged on the permanent magnet; when the current temperature exceeds a preset temperature, transmitting a cooling medium to the permanent magnet through a cooling channel in the passive magnetic bearing, and when the current temperature is lower than the preset temperature, stopping transmitting the cooling medium.

[0042] The third sensor is directly mounted on the permanent magnet and can monitor the temperature of the permanent magnet in real time. In the process of generating magnetic levitation force, the permanent magnet will generate heat due to electromagnetic effects and mechanical losses, and excessive temperature may affect the magnetism of the magnet or cause the magnet to demagnetize, thereby affecting the performance and reliability of magnetic levitation. The third sensor continuously collects the current temperature data of the permanent magnet and compares these data with the preset safety temperature value. The preset temperature is usually the temperature value before the permanent magnet begins to experience performance degradation or safety risks. If the current temperature monitored exceeds the preset temperature, the cooling channel in the passive magnetic bearing will be activated to transport the cooling medium (such as water, oil or air) to the vicinity of the permanent magnet, and the temperature of the permanent magnet will be reduced through cooling mechanisms such as heat conduction, convection or evaporation to ensure that it operates within a safe range. When the current temperature is lower than the preset temperature, the transmission of the cooling medium is stopped.

[0043] In an exemplary embodiment, after the cooling medium is transmitted to the permanent magnet through the cooling channel in the passive magnetic bearing, the method further includes: obtaining again the current temperature of the permanent magnet that has received the cooling medium; when the current temperature obtained again still exceeds the preset temperature, starting the alarm device set for the permanent magnet, and generating an early warning report based on the temperature obtained by the third sensor; encrypting the early warning report to obtain an encrypted early warning report; transmitting the encrypted early warning report to a mobile device of a target object that maintains the wind wheel to instruct the target object to detect the passive magnetic bearing.

[0044] If after cooling, the third sensor detects that the current temperature of the permanent magnet still exceeds the preset safety temperature, this indicates that the cooling system may not be able to effectively reduce the temperature. In this case, the alarm device will be activated to immediately warn the operator or maintenance personnel. At the same time as the alarm, an early warning report is generated based on the temperature data obtained by the third sensor. This early warning report records the time, temperature readings and possible cause analysis of the temperature anomaly in detail, providing data support for subsequent maintenance and troubleshooting. In order to protect the security and privacy of the data, the early warning report is encrypted. The encrypted early warning report will be transmitted to the mobile device of the target object responsible for maintaining the wind rotor through a secure communication channel, such as the smartphone or professional equipment of the maintenance personnel. This ensures that the maintenance personnel can receive an early warning of the temperature anomaly in real time. When the maintenance personnel receive the encrypted early warning report, they will decrypt the report and understand the details of the abnormal temperature of the permanent magnet. According to the instructions of the report, the maintenance personnel go to the wind turbine site to inspect the passive magnetic bearing.

[0045] In an exemplary embodiment, after determining the magnetic levitation force of the passive magnetic bearing according to the volume of the permanent magnet, the method further includes: determining a power supply set for multiple electrical devices in the passive magnetic bearing, wherein the power supply is used to store electrical energy converted from solar energy, and the multiple electrical devices include: a third sensor, an alarm device, the third sensor is used to obtain the temperature of the permanent magnet, and the alarm device is used to indicate that the permanent magnet, a target object for maintaining the wind wheel, has an abnormality; when the remaining power of some or all of the multiple electrical devices is less than a preset value, the power supply is started to supply power to the some or all of the electrical devices.

[0046] Multiple electrical devices in the passive magnetic bearing, such as the third sensor and the alarm device, require continuous or intermittent power support to operate normally. Although the power demand of these devices is relatively small, they have strict requirements on stability and reliability. When the remaining power of any device drops below the preset value, it indicates that the device cannot work normally in the next monitoring or operation cycle. Once it is detected that the remaining power of some or all electrical devices is lower than the preset value, the power supply is started to power these devices through batteries or supercapacitors until their power returns to a safe level. Among them, the above-mentioned power supply is used to collect solar energy and convert it into electrical energy, which is then stored in a capacitor.

[0047] In order to better understand the process of the above-mentioned method for determining the magnetic levitation force, the above-mentioned method for determining the magnetic levitation force is described below in combination with an optional embodiment, but it is not used to limit the technical solution of the embodiment of the present application.

[0048] Figure 3 is a schematic diagram of a method for determining magnetic levitation force according to an embodiment of the present application, such as Figure 3 As shown, specifically including the following:

[0049] Attached Figure 3 The left part of the diagram shows the overall structure of the passive magnetic bearing and the radial positioning bearing. There are three bearings in the left part, the left and right bearings are radial positioning bearings in this embodiment, and the middle bearing is the passive magnetic bearing in this embodiment. This layout is intended to provide additional radial support when the wind rotor rotates, ensuring that the wind rotor can still maintain precise radial positioning in the magnetic suspension state, preventing the wind rotor from offsetting or vibrating during rotation, thereby improving the operating efficiency and reliability of the entire wind turbine.

[0050] The passive magnetic bearing includes a fixed part and a rotating part, wherein the fixed part of the passive magnetic bearing (attached Figure 3 The middle part) includes a permanent magnet (attached Figure 3The right side of the figure). The volume selection of the permanent magnet is directly related to the magnetization intensity of the permanent magnet and the magnetic field intensity generated, which in turn determines the magnitude of the magnetic levitation force of the passive magnetic bearing. The formula f(Fe)=f(D,L) can be used to determine that there is a functional relationship between the volume of the permanent magnet and the magnetic levitation force, where Fe represents the magnetic levitation force, D represents the diameter of the permanent magnet, and L represents the height of the permanent magnet. This means that in order to support the weight of the wind wheel and resist the bending moment, the size selection of the permanent magnet needs to be accurately calculated to ensure that it generates sufficient magnetic force at the most effective position. The formula (f(D,L)=f(G,M)) can be used to determine that there is a functional relationship between the volume of the permanent magnet and the weight of the wind wheel and the bending moment that the wind wheel is subjected to, where G represents the weight of the wind wheel and M represents the maximum bending moment that the wind wheel needs to resist. This relationship emphasizes that when determining the permanent magnet, in addition to considering the need to support the weight of the wind wheel, it is also necessary to fully consider the maximum bending moment encountered by the wind wheel during rotation to ensure the reliability and safety of the passive magnetic bearing in actual operation. In order to ensure that the passive magnetic bearing can withstand the maximum bending moment M of the wind rotor under extreme conditions, the design process needs to be based on the maximum wind force F and the farthest lever H that the wind rotor has been subjected to in historical operating data, and the value of the maximum bending moment M is calculated by the formula M=F*H. This step is the basis for designing the bearing capacity of the passive magnetic bearing, ensuring that the wind rotor can maintain stable rotation in all operating modes.

[0051] At the same time, in order to ensure the precise suspension of the wind wheel at the target position, in this embodiment, the radial positioning bearing is arranged on the outside of the passive magnetic suspension bearing, and the first sensor and the fine-tuning component are assembled on the radial positioning bearing. Among them, the first sensor detects the current position of the wind wheel in real time and compares it with the target position. If a position deviation is detected, the radial gap between the wind wheel and the rotating axis of the wind wheel is adjusted by the fine-tuning component to eliminate the position deviation and stabilize the wind wheel at the target position. This fine-tuning mechanism not only improves the positioning accuracy of the wind wheel, but also enhances the overall stability and efficiency of the system.

[0052] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0053] In this embodiment, a device for determining magnetic levitation force is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0054] Figure 4 : is a structural block diagram of a device for determining magnetic levitation force according to an embodiment of the present application, the device comprising:

[0055] A first determination module 40 is used to determine the maximum bending moment force that the wind rotor can resist according to the maximum wind force and the farthest lever arm borne by the wind rotor during the rotation process of the historical time period;

[0056] A second determination module 42 is used to determine the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel;

[0057] The third determination module 44 is used to determine the magnetic suspension force of the passive magnetic suspension bearing according to the volume of the permanent magnet, wherein the magnetic suspension force is used to suspend the wind wheel at a target height.

[0058] Through the above device, the maximum bending moment that the wind wheel can resist is determined according to the maximum wind force and the farthest lever arm that the wind wheel is subjected to during the rotation process of the historical time period; the volume of the permanent magnet in the passive magnetic suspension bearing is determined according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic suspension bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic suspension bearing is arranged on the inside of the wind wheel; the magnetic suspension force of the passive magnetic suspension bearing is determined according to the volume of the permanent magnet, wherein the magnetic suspension force is used to suspend the wind wheel at the target height. This solves the problem in the related art that the contact between the main bearing of the vertical axis wind motor and the wind wheel causes the main bearing to bear a huge load, resulting in mechanical wear of the main bearing.

[0059] In an exemplary embodiment, the third determination module 44 is also used to obtain the current position of the wind wheel through a first sensor, wherein the first sensor is arranged on a radial positioning bearing, and the radial positioning bearing is arranged on the outside of the passive magnetic suspension bearing; and determine whether the current position deviates from the target position of the wind wheel.

[0060] In an exemplary embodiment, the third determination module 44 is also used to adjust the radial gap between the wind wheel and the rotation axis of the wind wheel through the fine-tuning component in the radial positioning bearing and the deviation between the current position and the target position when it is determined that the current position deviates from the target position, so as to stabilize the wind wheel at the target position.

[0061] In an exemplary embodiment, the first determination module 40 is also used to obtain the maximum wind force and the farthest lever arm through a second sensor, wherein the second sensor is arranged on the wind wheel; and the maximum bending moment force M is determined according to the following formula: M=F*H, wherein F is the maximum wind force and H is the farthest lever arm.

[0062] In an exemplary embodiment, the third determination module 44 is also used to obtain the current temperature of the permanent magnet through a third sensor, wherein the third sensor is arranged on the permanent magnet; when the current temperature exceeds the preset temperature, the cooling medium is transmitted to the permanent magnet through the cooling channel in the passive magnetic bearing, and when the current temperature is lower than the preset temperature, the transmission of the cooling medium is stopped.

[0063] In an exemplary embodiment, the third determination module 44 is also used to obtain the current temperature of the permanent magnet that receives the cooling medium again; when the current temperature obtained again still exceeds the preset temperature, the alarm device set for the permanent magnet is started, and an early warning report is generated according to the temperature obtained by the third sensor; the early warning report is encrypted to obtain an encrypted early warning report; and the encrypted early warning report is transmitted to a mobile device of a target object that maintains the wind wheel to instruct the target object to detect the passive magnetic levitation bearing.

[0064] In an exemplary embodiment, the third determination module 44 is also used to determine the power supply set for multiple electrical devices in the passive magnetic bearing, wherein the power supply is used to store electrical energy converted from solar energy, and the multiple electrical devices include: a third sensor, an alarm device, the third sensor is used to obtain the temperature of the permanent magnet, and the alarm device is used to indicate that the permanent magnet, a target object for maintaining the wind wheel, has an abnormality; when the remaining power of some or all of the multiple electrical devices is less than a preset value, the power supply is started to power the some or all of the electrical devices.

[0065] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0066] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0067] S1, determining the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the longest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period;

[0068] S2, determining the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel;

[0069] S3, determining the magnetic levitation force of the passive magnetic levitation bearing according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0070] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0071] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0072] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0073] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0074] S1, determining the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the longest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period;

[0075] S2, determining the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel;

[0076] S3, determining the magnetic levitation force of the passive magnetic levitation bearing according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0077] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0078] An embodiment of the present application further provides a computer program product, comprising a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program product, and when the computer program is executed by a processor, the steps of the method described in each embodiment of the present application are implemented.

[0079] Optionally, in this embodiment, the above computer program may be configured to implement the following steps when executed by a processor:

[0080] S1, determining the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the longest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period;

[0081] S2, determining the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel;

[0082] S3, determining the magnetic levitation force of the passive magnetic levitation bearing according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

[0083] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0084] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0085] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining magnetic levitation force, characterized in that: include: Determine the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period; Determining the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel; The magnetic suspension force of the passive magnetic suspension bearing is determined according to the volume of the permanent magnet, wherein the magnetic suspension force is used to suspend the wind wheel at a target height.

2. The method for determining the magnetic levitation force according to claim 1, characterized in that: After determining the magnetic suspension force of the passive magnetic suspension bearing according to the volume of the permanent magnet, the method further includes: Acquiring the current position of the wind wheel through a first sensor, wherein the first sensor is arranged on a radial positioning bearing, and the radial positioning bearing is arranged on the outside of the passive magnetic suspension bearing; Determine whether the current position deviates from the target position of the wind wheel.

3. The method for determining the magnetic levitation force according to claim 2, characterized in that: After determining whether the current position deviates from the target position of the wind wheel, the method further includes: When it is determined that the current position deviates from the target position, the radial clearance between the wind wheel and the rotating axis of the wind wheel is adjusted by the fine-tuning component in the radial positioning bearing and the deviation between the current position and the target position to stabilize the wind wheel at the target position.

4. The method for determining the magnetic levitation force according to claim 1, characterized in that: The maximum bending moment force that the wind rotor can withstand is determined according to the maximum wind force and the farthest lever arm that the wind rotor has been subjected to during the rotation process of the historical time period, including: Acquire the maximum wind force and the farthest lever arm through a second sensor, wherein the second sensor is disposed on the wind wheel; The maximum bending moment M is determined according to the following formula: M=F*H, where F is the maximum wind force, H is the farthest lever arm.

5. The method for determining the magnetic levitation force according to claim 1, characterized in that: After determining the magnetic suspension force of the passive magnetic suspension bearing according to the volume of the permanent magnet, the method further includes: Acquiring the current temperature of the permanent magnet by a third sensor, wherein the third sensor is arranged on the permanent magnet; When the current temperature exceeds the preset temperature, the cooling medium is transmitted to the permanent magnet through the cooling channel in the passive magnetic bearing, and when the current temperature is lower than the preset temperature, the transmission of the cooling medium is stopped.

6. The method for determining the magnetic levitation force according to claim 5, characterized in that: After the cooling medium is transferred to the permanent magnet through the cooling channel in the passive magnetic bearing, the method further comprises: acquiring again the current temperature of the permanent magnet that has received the cooling medium; When the current temperature acquired again still exceeds the preset temperature, an alarm device provided for the permanent magnet is activated, and a warning report is generated according to the temperature acquired by the third sensor; Encrypting the early warning report to obtain an encrypted early warning report; The encrypted early warning report is transmitted to a mobile device of a target object that maintains the wind wheel, so as to instruct the target object to detect the passive magnetic bearing.

7. The method for determining the magnetic levitation force according to claim 1, characterized in that: After determining the magnetic suspension force of the passive magnetic suspension bearing according to the volume of the permanent magnet, the method further includes: Determine a power supply provided for a plurality of electrical devices in the passive magnetic bearing, wherein the power supply is used to store electrical energy converted from solar energy, and the plurality of electrical devices include: a third sensor and an alarm device, wherein the third sensor is used to obtain the temperature of the permanent magnet, and the alarm device is used to indicate that the permanent magnet, which is a target object for maintaining the wind wheel, is abnormal; When the remaining power of some or all of the multiple electric devices is less than a preset value, the power supply is started to supply power to the some or all of the electric devices.

8. A device for determining magnetic levitation force, characterized in that: include: A first determination module is used to determine the maximum bending moment force that the wind rotor can withstand according to the maximum wind force and the farthest lever arm borne by the wind rotor during the rotation process of the historical time period; A second determination module is used to determine the volume of the permanent magnet in the passive magnetic bearing according to the maximum bending moment and the weight of the wind wheel, wherein the fixed part of the passive magnetic bearing is arranged on the outside of the wind wheel, and the rotating part of the passive magnetic bearing is arranged on the inside of the wind wheel; The third determination module is used to determine the magnetic levitation force of the passive magnetic levitation bearing according to the volume of the permanent magnet, wherein the magnetic levitation force is used to suspend the wind wheel at a target height.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 7 when executed.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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