Motor system and method for adaptive overcurrent and intelligent protection, and medium

Abstract

The invention relates to the field of motors, in particular to a self-adaptive overcurrent and intelligent protection motor system and method and a medium, and the method comprises the steps: detecting and obtaining motor current data in real time; determining an over-current signal through the motor current data and a preset over-current threshold value; determining and outputting a protection action signal according to the overcurrent signal and a preset trigger threshold value; determining a protection trigger signal according to the protection action signal, the motor current data and a preset protection threshold value; obtaining a recovery signal; and determining a recovery state signal through the protection trigger signal and the recovery signal and outputting the recovery state signal. The over-current protection device has the effect of enhancing the over-current protection effect of the motor.

Description

Technical Field

[0001] The present application relates to the field of motors, and more particularly to a motor system, method and medium capable of adaptive overcurrent and intelligent protection. Background Art

[0002] At present, motor systems are widely used in industrial production, but during the operation of the motor, various reasons (such as excessive load, line short circuit, etc.) may cause excessive current, thus causing damage to the motor. The overcurrent protection technology of existing motor systems is mostly fixed threshold overcurrent protection, that is, when the current exceeds the threshold, the protection system will cut off the power supply to prevent motor damage, but there is also a problem, that is, it cannot be adaptively adjusted according to the operating conditions of the motor, there are certain limitations, and it may also cause motor damage or reduced production efficiency due to misjudgment or missed judgment. Summary of the invention

[0003] In order to improve the problem of limitations of overcurrent protection, the present application provides a motor system, method and medium for adaptive overcurrent and intelligent protection.

[0004] The present application provides an adaptive overcurrent and intelligent protection method, which adopts the following technical solutions: An adaptive overcurrent and intelligent protection method, comprising: Real-time detection to obtain motor current data; Determining an overcurrent signal by using the motor current data and a preset overcurrent threshold; Determine and output a protection action signal based on the overcurrent signal and a preset trigger threshold; Determine a protection trigger signal through the protection action signal, the motor current data and a preset protection threshold; Get the recovery signal; A recovery state signal is determined by the protection trigger signal and the recovery signal and outputted.

[0005] By adopting the above technical solution, it is possible to automatically determine whether the overcurrent protection action is normal, and then automatically restore, so that the circuit equipment continues to work automatically, thereby improving the stability and safety of the motor operation and reducing the risk of motor damage caused by overcurrent.

[0006] Optionally, determining and outputting a protection action signal based on the overcurrent signal and a preset trigger threshold value includes: The trigger threshold includes a cut-off threshold and a load regulation threshold; Determine a cut-off action signal according to the overcurrent signal and the cut-off threshold; Determine a load regulation action signal according to the overcurrent signal and the load regulation threshold; The protection action signal is determined and outputted according to the cut-off action signal, the preset cut-off coefficient, the load adjustment action signal and the preset load adjustment coefficient.

[0007] By adopting the above technical solution, the type of overcurrent protection action is automatically determined, and it is possible to automatically determine the overcurrent state according to the overcurrent degree, thereby improving the accuracy and timeliness of protection.

[0008] Optionally, the overcurrent threshold includes: Obtain motor parameters, influencing factors and time data; Determining the initial overcurrent threshold value by using the motor parameters; Determine overcurrent influence data by using the influencing factors, the time data and the overcurrent threshold; The new overcurrent threshold is determined by the overcurrent impact data and the original overcurrent threshold, and the new overcurrent threshold replaces the original overcurrent threshold to participate in the calculation of the overcurrent signal.

[0009] By adopting the above technical solution, the overcurrent threshold is adaptively adjusted according to the usage conditions, and the motor parameters are automatically obtained. It can adapt to motors of different models, expand the adaptation range, and avoid the limitations of a fixed overcurrent threshold.

[0010] Optionally, determining the overcurrent impact data by using the impact factor, the time data and the overcurrent threshold value includes: The motor parameters include an initial internal resistance value, and the influencing factors include ambient temperature data, motor temperature data, and motor power data; Determine the heat dissipation temperature difference by using the ambient temperature data and the motor temperature data; Determine heat dissipation data by using the heat dissipation temperature difference, the time data and a preset temperature difference heat dissipation threshold; Determine the motor internal resistance data through the heat dissipation data, the motor power data and a preset internal resistance heating threshold; The overcurrent influence data is determined by the motor internal resistance data, the initial internal resistance value, the initial overcurrent threshold value and a preset influence coefficient.

[0011] By adopting the above technical solution, the actual overcurrent threshold value under the current working state is automatically determined by temperature and power, and is automatically corrected, thereby further improving the accuracy of overcurrent protection.

[0012] Optionally, also include: Acquire motor vibration data, motor noise data and speed position data, wherein the motor parameters include motor vibration threshold, motor noise threshold and speed position threshold; Determining external looseness data by using the motor vibration data and a preset motor vibration threshold; Determine the vibration noise data by using the motor vibration data and a preset vibration pronunciation threshold; Determine interference noise data by using the vibration noise data and the motor noise data; Determine internal looseness data by using the interference-removed noise data and the motor noise threshold; Determine the rotation speed looseness data by using the rotation speed position data and the rotation speed position threshold; A comprehensive looseness signal is determined and outputted through the external looseness data, the internal looseness data and the rotational speed looseness data.

[0013] By adopting the above technical solution, the working status of each component in the motor is automatically judged and output, which is convenient for users to perform maintenance and inspection.

[0014] Optionally, also include: Get motor speed data; Determine theoretical power data by using the motor speed data and a preset speed power threshold; Determine the loss ratio by using the theoretical power data and the motor power data; The remaining life is determined by the loss ratio and a preset loss threshold and outputted.

[0015] By adopting the above technical solution, the approximate remaining life of the motor can be automatically determined and calculated, so that the user can replace it immediately, thereby reducing the probability of affecting the operation of other equipment due to failure to replace the new motor in time.

[0016] The present application provides a motor system with adaptive overcurrent and intelligent protection, which adopts the following technical solutions: A motor system with adaptive overcurrent and intelligent protection, comprising: An acquisition module is used to collect current, voltage, and temperature to obtain the motor current data and the influencing factors; A detection module, used to detect the rotation, vibration and noise of the motor, and obtain the motor vibration data, the motor noise data and the speed position data; A data processing module, used for receiving the motor current data, the influencing factors, the motor vibration data, the motor noise data and the speed position data, and calculating the protection action signal and the recovery state signal; The driving module is used to receive the protection action signal and the recovery state signal to control and protect the working state of the motor.

[0017] By adopting the above technical solution, automatic detection, automatic control, automatic protection and automatic reset are realized, which greatly improves the degree of intelligence.

[0018] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executes an adaptive overcurrent and intelligent protection method.

[0019] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. Improve the stability and safety of motor operation and reduce the risk of motor damage caused by overcurrent.

[0021] 2. It realizes adaptive adjustment of motor overcurrent protection, avoiding the limitations of fixed threshold protection.

[0022] 3. Automatically judge the over-current status, improving the accuracy and timeliness of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of a method for adaptive overcurrent and intelligent protection in an embodiment of the present application.

[0024] Figure 2 It is a flowchart diagram of step S2 to step S23.

[0025] Figure 3 It is a flowchart diagram of step S3 to step S33.

[0026] Figure 4 It is a flowchart diagram of step S4 to step S44.

[0027] Figure 5 It is a flowchart diagram of step S5 to step S56.

[0028] Figure 6 It is a flowchart diagram of step S6 to step S63.

[0029] Figure 7 It is a module schematic diagram of a motor system with adaptive overcurrent and intelligent protection in an embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. Acquisition module; 2. Detection module; 3. Data processing module; 4. Driving module. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7This application is described in further detail.

[0032] The embodiment of the present application discloses a method for adaptive overcurrent and intelligent protection. Figure 1 The method for adaptive overcurrent and intelligent protection includes the following steps: S1, real-time detection to obtain motor current data; S11, determining an overcurrent signal through motor current data and a preset overcurrent threshold; S12, determining a protection action signal based on the overcurrent signal and a preset trigger threshold and outputting the signal; S13, determining a protection trigger signal through the protection action signal, the motor current data and a preset protection threshold; S14, obtaining a recovery signal; S15. Determine a recovery state signal through the protection trigger signal and the recovery signal and output it.

[0033] Details: The motor current data is the working current of the motor detected in real time. The overcurrent threshold is the current size when it is judged as overcurrent. If the motor current data exceeds the range of the overcurrent threshold, it means that the current motor has an overcurrent phenomenon, and an overcurrent signal indicating overcurrent is output. The trigger threshold is the action to be performed. For example, if the trigger threshold is set to cut off the power supply, after receiving the overcurrent signal, it is read from the trigger threshold and the protection action signal indicating power cutoff is output. The protection threshold is the parameter after the action indicated by the trigger threshold is successfully executed. For example, if the protection threshold is set to be 0 after the power supply is successfully cut off, the protection action signal indicating power cutoff is output. After that, the motor current data is read and compared with 0. If the motor current data becomes 0, it means that the protection action is successfully executed, and a protection trigger signal indicating that the overcurrent protection is successfully executed is output; the recovery signal can be manually input, or the processor can automatically output a recovery signal a certain period of time after judging that the overcurrent protection is successfully executed, that is, through the protection trigger signal indicating that the overcurrent protection is successfully executed, and after receiving the recovery signal, a recovery status signal is output to automatically restore the circuit. For example, if the previous protection action signal is to cut off the power supply, the recovery status signal is to reconnect the power supply. If the previous protection action signal is to reduce the load, the recovery status signal is to restore the load to the load value before the overcurrent protection.

[0034] Reference Figure 2 , step S12 further includes the following steps: S2, trigger threshold includes cut-off threshold and load regulation threshold; S21, determining a cut-off action signal through an overcurrent signal and a cut-off threshold; S22, determining a load regulation action signal according to the overcurrent signal and the load regulation threshold; S23, determining and outputting a protection action signal through the cut-off action signal, the preset cut-off coefficient, the load adjustment action signal and the preset load adjustment coefficient.

[0035] Detailed: The load regulation threshold is the overcurrent protection action triggered by the current threshold for adjusting the load, and the cut-off threshold is the overcurrent protection action triggered by the current threshold for cutting off the power supply. Suppose the load regulation threshold is [0,30%], and the cut-off threshold is 30%. If the motor current data is 70A, and the overcurrent threshold is 60A, then the overcurrent signal exceeds the overcurrent threshold (70-60) / 60=16%, and is within the range of the load regulation threshold, then the load regulation action signal is output. If the motor current data is 100A, the overcurrent signal is 66%, then the cut-off action signal is output. If multiple overcurrent points appear in the same series circuit at the same time, a comprehensive judgment is made. If there are two overcurrent points in the same circuit, one overcurrent triggers a cut-off action signal, and the other overcurrent triggers a load regulation action signal. If the cut The cut-off action signal is 35%. If the load regulation action signal is 20%, the cut-off coefficient is set to 2, and the load regulation coefficient is set to 1. The cut-off action signal combined with the cut-off coefficient can obtain a comprehensive coefficient for cutting off the power supply of (35-30)*2=10, and the load regulation action signal combined with the load regulation coefficient is 20*1=20. At this time, 20>10, and the protection action signal corresponding to the load regulation action signal is executed and output. After the load is adjusted, if the overcurrent point that triggered the cut-off action signal before still triggers the cut-off action signal, repeat steps S21-S23. At this time, since only this overcurrent point exists, the power supply is cut off. If this point becomes a load regulation action signal, the result of repeating steps S21-S23 will be to execute the load regulation action signal again to keep the circuit continuously turned on.

[0036] Reference Figure 3 , the calculation of the overcurrent threshold includes the following steps: S3, obtaining motor parameters, influencing factors and time data; S31, determining an initial overcurrent threshold value through motor parameters; S32, determining overcurrent impact data through influencing factors, time data and overcurrent threshold value; S33. Determine a new overcurrent threshold value through the overcurrent impact data and the original overcurrent threshold value, and the new overcurrent threshold value replaces the original overcurrent threshold value to participate in the calculation of the overcurrent signal.

[0037] Detailed: Motor parameters are various parameters of the motor, which are usually fixed at the factory, such as rated current, rated voltage, rated power, etc., and also include the overcurrent threshold at the factory. The influencing factors include various data that will affect the motor. For example, the high or low ambient temperature will affect the overcurrent situation, which is the overcurrent influence data. For example, 60A was originally overcurrent, but the environmental conditions are different. At this time, 55A may have been overcurrent, but the overcurrent threshold is still 60A, so it is judged that there is no overcurrent at this time, resulting in overcurrent damage to the circuit. Therefore, the overcurrent threshold is adjusted from 60A to 55A through the overcurrent influence data to adapt to the current environmental conditions.

[0038] Reference Figure 4 , step S32 further comprises the following steps: S4, the motor parameters include the initial internal resistance value, and the influencing factors include the ambient temperature data, the motor temperature data and the motor power data; S41, the heat dissipation temperature difference is determined by the ambient temperature data and the motor temperature data; S42, determining heat dissipation data according to the heat dissipation temperature difference, time data and a preset temperature difference heat dissipation threshold; S43, determining the motor internal resistance data through the heat dissipation data, the motor power data and the preset internal resistance heating threshold; S44, determining overcurrent impact data through motor internal resistance data, initial internal resistance value, initial overcurrent threshold value and preset impact coefficient.

[0039] Details: The initial internal resistance value is the internal resistance of the motor when it leaves the factory, that is, when it is just manufactured. At this time, there is no influence of service life or use environment that causes the internal resistance to increase. The ambient temperature data is obtained by collecting the ambient temperature outside the motor, and the motor temperature data is obtained by collecting the temperature inside the motor, which can be achieved through a temperature sensor. The motor power data is the current working power of the motor detected. The temperature difference between the detected ambient temperature and the temperature inside the motor is calculated, which is the heat dissipation temperature difference. If the time data is 1min, the heat dissipation temperature difference is 20°, the time data is 2min, the heat dissipation temperature difference is 20°, and the time data is 3min, The heat dissipation temperature difference is 20°, it means that the heat generation and heat dissipation of the motor are already in a stable state under the current working power. It can also be calculated when the heat dissipation temperature difference is changing, but the heat dissipation data calculated during the change will affect the accuracy. Suppose the temperature difference heat dissipation threshold is A, which represents the overall heat dissipation efficiency of the motor. A is A, A represents the thermal conductivity of the overall material of the motor and the thermal conductivity of the air in the space of the motor, etc. The unit of A is heat / temperature difference, that is, the heat dissipation data is 20A, which represents the heat dissipation efficiency, and can also be equivalent to the heat generation efficiency of the motor at this time; the internal resistance heating threshold is the relationship between the heat generation, power and internal resistance. If the motor is a current motor, the power takes the motor current data to participate in the calculation. The internal resistance heating threshold is set to be at a current of 10A, the heat generation is equal to k*R, k is the heating coefficient of the internal resistance, R is the internal resistance value, that is, the motor internal resistance data, so that the motor internal resistance data can be reversed according to the known heat dissipation data and motor power data to obtain the motor internal resistance data, and the ratio can be obtained by the motor internal resistance data and the initial internal resistance value. If the motor internal resistance data is 2R and the initial internal resistance value is R, the ratio is 2. Assuming the influence coefficient is 0.5, the initial overcurrent threshold with the overcurrent influence data being 0.5 times can be obtained, and then the overcurrent threshold is corrected according to this overcurrent influence data.

[0040] Reference Figure 5 , further comprising the following steps: S5, obtaining motor vibration data, motor noise data and speed position data, the motor parameters including motor vibration threshold, motor noise threshold and speed position threshold; S51, determining external looseness data through motor vibration data and a preset motor vibration threshold; S52, determining vibration noise data through motor vibration data and a preset vibration pronunciation threshold; S53, determining interference noise data through vibration noise data and motor noise data; S54, determining the internal looseness data by removing the interference noise data and the motor noise threshold; S55, determining the speed loosening data through the speed position data and the speed position threshold; S56. Determine a comprehensive looseness signal through the external looseness data, the internal looseness data and the rotational speed looseness data and output it.

[0041] Detailed: The motor vibration data is collected from the vibration of the motor casing or the inside of the motor, including amplitude, frequency, etc. The motor noise data can be collected from the sound of the motor on the motor casing, including decibels, sound waveform, etc. The speed position data is used to detect the position of the rotor in the motor. If the motor vibration data exceeds the motor vibration threshold, it means that the vibration of the motor is too large, including excessive amplitude or excessive frequency. This may be due to loose connection of the motor casing, or loose connection between the internal components of the motor and the motor casing. At this time, it can be compared with the motor vibration threshold. Different components in the motor are made of different materials, and the amplitude and frequency of vibration emitted by different materials are also different. It is easy to determine which material emits collision vibration. This is the external loose data. The vibration pronunciation threshold is the vibration of the motor components, corresponding to the coefficient of sound generation. For example, the motor casing is made of steel, and its vibration and sound coefficients are x. If the amplitude is q and the frequency is w, if the waveform is a sin function, then The waveform of the sound can be obtained as x*qsinwθ, which is the vibration noise data. Then, the vibration noise data is removed from the directly collected vibration noise data, that is, the interference noise caused by the looseness of the motor casing is eliminated, and a more accurate sound emitted by the motor itself is obtained, which is the interference noise data. If the interference noise data exceeds the motor noise threshold, for example, insufficient rotor lubrication may cause friction noise, or other moving parts may emit additional sounds due to friction or other factors. At this time, it can also be compared with the motor noise threshold to simply determine which component has a fault. This is the internal loose data. If the speed position data does not correspond to the speed position threshold, it means that the speed position is offset, which is the speed loose data. Then, the additional vibration and noise caused by the speed position offset are excluded from the external loose data and the internal loose data, so that the judgment of the external loose data and the internal loose data is more accurate, and then the comprehensive loose signal is integrated and output to the user.

[0042] Reference Figure 6 , further comprising the following steps: S6, obtaining motor speed data; S61, determining theoretical power data through motor speed data and a preset speed power threshold; S62, determining a loss ratio by using theoretical power data and motor power data; S63, determining the remaining life by the loss ratio and the preset loss threshold and outputting it.

[0043] In detail: the motor speed data is the data obtained by collecting the speed of the rotor inside the motor. The speed power threshold is the relationship coefficient between the rotor speed and the power. Assuming the speed power threshold is 100, if the motor speed is 10 turns / s, the theoretical power data can be obtained as 10*100=1000W. Then the motor power data obtained by direct detection is compared with the theoretical power data. This ratio is the loss ratio, which is then compared with the loss threshold to determine how much loss the motor currently has, thereby calculating the remaining life and outputting it to the user.

[0044] The embodiment of the present application discloses a motor system with adaptive overcurrent and intelligent protection. Figure 7 The motor system with adaptive overcurrent and intelligent protection includes an acquisition module 1, a detection module 2, a data processing module 3 and a drive module 4. The acquisition module 1 includes a current transformer for detecting current, a voltage transformer for detecting voltage and a temperature sensor for detecting temperature, and obtains ambient temperature data, motor temperature data, motor power data and motor current data, etc. The detection module 2 includes a wheel sensor for detecting rotor state, a vibration sensor for detecting vibration, a noise sensor for detecting noise, etc., and obtains motor speed data, motor vibration data, motor noise data and speed position data.

[0045] Reference Figure 7 The data processing module 3 includes a processor and a database. The database is used to store various threshold data, such as overcurrent threshold, trigger threshold, protection threshold, cut-off coefficient, load adjustment coefficient, temperature difference heat dissipation threshold, internal resistance heating threshold, motor vibration threshold, vibration pronunciation threshold, motor noise threshold, speed position threshold, speed power threshold and loss threshold. After the processor receives ambient temperature data, motor temperature data, motor power data, motor current data, motor speed data, motor vibration data, motor noise data and speed position data, it calls the corresponding threshold data from the database, and obtains the corresponding protection trigger signal, recovery status signal, comprehensive loose signal and remaining life after data processing and calculation.

[0046] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0047] Reference Figure 7 The driving module 4 can use relays or other devices to reset and disconnect the circuit or adjust the load according to the recovery state signal and the protection action signal.

[0048] The embodiment of the present application discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program that can be loaded by a processor and execute an adaptive overcurrent and intelligent protection method.

[0049] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for adaptive overcurrent and intelligent protection, characterized in that: include: Real-time detection to obtain motor current data; Determining an overcurrent signal by using the motor current data and a preset overcurrent threshold; Determine and output a protection action signal based on the overcurrent signal and a preset trigger threshold; Determine a protection trigger signal through the protection action signal, the motor current data and a preset protection threshold; Get the recovery signal; A recovery state signal is determined by the protection trigger signal and the recovery signal and outputted.

2. The method for adaptive overcurrent and intelligent protection according to claim 1, characterized in that: Determining a protection action signal based on the overcurrent signal and a preset trigger threshold and outputting the signal includes: The trigger threshold includes a cut-off threshold and a load regulation threshold; Determine a cut-off action signal according to the overcurrent signal and the cut-off threshold; Determine a load regulation action signal according to the overcurrent signal and the load regulation threshold; The protection action signal is determined and outputted according to the cut-off action signal, the preset cut-off coefficient, the load adjustment action signal and the preset load adjustment coefficient.

3. The method for adaptive overcurrent and intelligent protection according to claim 1, characterized in that: The overcurrent threshold includes: Obtain motor parameters, influencing factors and time data; Determining the initial overcurrent threshold value by using the motor parameters; Determine overcurrent influence data by using the influencing factors, the time data and the overcurrent threshold; The new overcurrent threshold is determined by the overcurrent impact data and the original overcurrent threshold, and the new overcurrent threshold replaces the original overcurrent threshold to participate in the calculation of the overcurrent signal.

4. The method for adaptive overcurrent and intelligent protection according to claim 3, characterized in that: Determining overcurrent impact data by using the impact factor, the time data and the overcurrent threshold value includes: The motor parameters include an initial internal resistance value, and the influencing factors include ambient temperature data, motor temperature data, and motor power data; Determine the heat dissipation temperature difference by using the ambient temperature data and the motor temperature data; Determine heat dissipation data by using the heat dissipation temperature difference, the time data and a preset temperature difference heat dissipation threshold; Determine the motor internal resistance data through the heat dissipation data, the motor power data and a preset internal resistance heating threshold; The overcurrent influence data is determined by the motor internal resistance data, the initial internal resistance value, the initial overcurrent threshold value and a preset influence coefficient.

5. The method for adaptive overcurrent and intelligent protection according to claim 4, characterized in that: Also includes: Acquire motor vibration data, motor noise data and speed position data, wherein the motor parameters include motor vibration threshold, motor noise threshold and speed position threshold; Determining external looseness data by using the motor vibration data and a preset motor vibration threshold; Determine the vibration noise data by using the motor vibration data and a preset vibration pronunciation threshold; Determine interference noise data by using the vibration noise data and the motor noise data; Determine internal looseness data by using the interference-removed noise data and the motor noise threshold; Determine the rotation speed looseness data by using the rotation speed position data and the rotation speed position threshold; A comprehensive looseness signal is determined and outputted through the external looseness data, the internal looseness data and the rotational speed looseness data.

6. The method for adaptive overcurrent and intelligent protection according to claim 3, characterized in that: Also includes: Get motor speed data; Determine theoretical power data by using the motor speed data and a preset speed power threshold; Determine the loss ratio by using the theoretical power data and the motor power data; The remaining life is determined by the loss ratio and a preset loss threshold and outputted.

7. A motor system with adaptive overcurrent and intelligent protection, using the adaptive overcurrent and intelligent protection method according to claim 1, characterized in that: include: A collection module (1) is used to collect current, voltage, and temperature to obtain the motor current data and the influencing factors; A detection module (2) is used to detect the rotation, vibration and noise of the motor, and obtain the motor vibration data, the motor noise data and the speed position data; A data processing module (3) is used to receive the motor current data, the influencing factors, the motor vibration data, the motor noise data and the speed position data, and calculate the protection action signal and the recovery state signal; The driving module (4) is used to receive the protection action signal and the recovery state signal to control and protect the working state of the motor.

8. A computer-readable storage medium, characterized in that: The device stores a computer program that can be loaded by a processor and executes any one of the adaptive overcurrent and intelligent protection methods according to claims 1 to 6.

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