Motor energy efficiency evaluation method and device, medium, equipment and program product

Abstract

The invention relates to a motor energy efficiency evaluation method and device, a medium, equipment and a program product. The method comprises the following steps: acquiring operation parameters of a motor; determining rated comprehensive efficiency and real-time comprehensive efficiency of the motor according to the operation parameters; according to the rated comprehensive efficiency and the real-time comprehensive efficiency, the energy efficiency evaluation result of the motor is determined, the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load. Therefore, the performance of the motor can be accurately mastered, the energy efficiency performance of the motor under the rated load and the energy efficiency performance of the motor under the real-time load are both considered, and the reliability of the energy efficiency evaluation result is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of computer technology, and in particular, to a motor energy efficiency evaluation method, device, medium, equipment and program product. Background Art

[0002] Electric motors are widely used in various fields. Improving the energy efficiency of electric motors is of great significance for building a resource-saving and environmentally friendly society and promoting sustainable development. In practical applications, the premise of improving energy efficiency is to effectively evaluate the energy efficiency level of the equipment. However, it is difficult to achieve accurate evaluation in the current motor energy efficiency evaluation methods. Summary of the invention

[0003] The purpose of the present disclosure is to provide a motor energy efficiency evaluation method, device, medium, equipment and program product to achieve accurate evaluation of motor energy efficiency.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a motor energy efficiency evaluation method according to a first aspect, comprising: Obtaining the operating parameters of the motor; Determine the rated comprehensive efficiency and the real-time comprehensive efficiency of the motor according to the operating parameters, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under real-time load; An energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

[0005] A second aspect of the present disclosure provides a motor energy efficiency evaluation device, comprising: An acquisition module, used for acquiring the operating parameters of the motor; A first determination module is used to determine the rated comprehensive efficiency and the real-time comprehensive efficiency of the motor according to the operating parameters, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load; The second determination module is used to determine the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

[0006] A third aspect of the present disclosure provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method provided in the first aspect of the present disclosure.

[0007] A fourth aspect of the present disclosure provides an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute a computer program in a memory to implement the steps of the method provided in the first aspect of the present disclosure.

[0008] A fifth aspect of the present disclosure provides a computer program product, including a computer program, which implements the steps provided in the first aspect of the disclosure when executed by a processor.

[0009] In the above technical solution, the operating parameters of the motor are first obtained; then, the rated comprehensive efficiency and real-time comprehensive efficiency of the motor are determined according to the operating parameters; then, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load. In this way, the performance of the motor can be accurately grasped, taking into account the energy efficiency performance of the motor under the rated load and the energy efficiency performance under the real-time load, thereby improving the reliability of the energy efficiency evaluation result.

[0010] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a flow chart of a motor energy efficiency evaluation method provided by an exemplary embodiment of the present disclosure.

[0012] Figure 2 is a block diagram of a motor energy efficiency evaluation device provided by an exemplary embodiment of the present disclosure.

[0013] Figure 3 is a block diagram of an electronic device provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0015] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0016] Figure 1 FIG. 1 is a flow chart of a method for evaluating motor energy efficiency provided by an exemplary embodiment of the present disclosure. Figure 1 As shown, the method may include S101 to S103.

[0017] S101, obtaining the operating parameters of the motor.

[0018] For example, some operating parameters, such as the output power and power supply voltage of the motor, can be obtained through the test instruments pre-set on the motor. The accuracy of the test instruments shall not be less than level 0.5, including: active and reactive watt-hour meters, ammeters, voltmeters, power factor meters, frequency meters, recorders, power quality analyzers, combined meters, special meters, etc. The remaining operating parameters, such as no-load reactive power, rated power, rated efficiency, and reactive power at rated load, can be determined by querying the original data provided by the manufacturer or through experiments. These parameters can reflect the working status of the motor under different load conditions and are the key basis for evaluating its energy efficiency.

[0019] S102, determining the rated comprehensive efficiency and real-time comprehensive efficiency of the motor according to the operating parameters.

[0020] The rated comprehensive efficiency is the comprehensive efficiency of the motor under rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under real-time load.

[0021] S103, determining an energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

[0022] For example, the energy efficiency evaluation result of the motor can be determined by comparing the numerical values ​​of the rated comprehensive efficiency and the real-time comprehensive efficiency. For example, if the real-time comprehensive efficiency is greater than the rated comprehensive efficiency, it can be determined that the energy efficiency evaluation result is that the motor's economic utilization of electric energy is good; if the real-time comprehensive efficiency is less than or equal to the rated comprehensive efficiency, it can be determined that the energy efficiency evaluation result is that the motor's economic utilization of electric energy still has room for adjustment.

[0023] In the above technical solution, the operating parameters of the motor are first obtained; then, the rated comprehensive efficiency and real-time comprehensive efficiency of the motor are determined according to the operating parameters; then, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load. In this way, the performance of the motor can be accurately grasped, taking into account the energy efficiency performance of the motor under the rated load and the energy efficiency performance under the real-time load, thereby improving the reliability of the energy efficiency evaluation result.

[0024] In an optional embodiment, in S103, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency, including: Determining a reference comprehensive efficiency according to the rated comprehensive efficiency and the first preset coefficient; If the real-time comprehensive efficiency is greater than or equal to the rated comprehensive efficiency, the energy efficiency assessment level is determined to be the first level; If the real-time comprehensive efficiency is less than the rated comprehensive efficiency and greater than the reference comprehensive efficiency, the energy efficiency assessment level is determined to be the second level; If the real-time comprehensive efficiency is less than or equal to the reference comprehensive efficiency, the energy efficiency assessment level is determined to be the third level.

[0025] Among them, the electric energy utilization effect of the motor characterized by the first level is better than the electric energy utilization effect of the motor characterized by the second level; the electric energy utilization effect of the motor characterized by the second level is better than the electric energy utilization effect of the motor characterized by the third level.

[0026] For example, the first preset coefficient may be preset, for example, may be set to 80%, and the product of the rated overall efficiency and the first preset coefficient may be determined as the reference overall efficiency.

[0027] If the real-time comprehensive efficiency is ≥ the rated comprehensive efficiency, the energy efficiency evaluation level can be determined to be the first level, and the motor has good economic efficiency in utilizing electric energy; If the rated comprehensive efficiency>real-time comprehensive efficiency>80% rated comprehensive efficiency, the energy efficiency assessment level can be determined to be the second level, and the economic efficiency of the motor's use of electrical energy is reasonable; If the real-time comprehensive efficiency is ≤80% of the rated comprehensive efficiency, the energy efficiency assessment level can be determined to be the third level, and the economic efficiency of the motor's use of electrical energy is unreasonable.

[0028] In this way, the classification of levels can enable users to identify key information more quickly, thereby making faster and more accurate decisions, improving the reliability of energy efficiency assessment results, and reducing management risks.

[0029] In an optional embodiment, in S103, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency, including: When the following conditions are met, the energy efficiency evaluation result of the motor is determined based on the rated comprehensive efficiency and the real-time comprehensive efficiency: The power supply voltage of the motor does not exceed the rated voltage deviation range, the three-phase voltage imbalance does not exceed the imbalance threshold, the power supply frequency deviation does not exceed the frequency deviation range, and the voltage distortion rate does not exceed the distortion rate threshold.

[0030] Among them, the rated voltage deviation range, the unbalance threshold and the distortion rate threshold can be preset based on actual needs, for example, the rated voltage deviation range is -10%-6%, the unbalance threshold is 1.5%, and the distortion rate threshold is 5%. The frequency deviation range can be the product of the rated power frequency and the second preset coefficient. For example, if the second preset coefficient is 1%, the frequency deviation range can be determined to be 1% of the rated power frequency. In this way, through the restrictions of the above conditions, the reliability of the obtained operating parameters can be ensured, avoiding the wrong energy efficiency evaluation results when the motor is abnormal.

[0031] In an optional embodiment, before executing step S103, the motor energy efficiency evaluation method provided by the present disclosure may further include: If the power supply voltage of the motor is different from the rated voltage, the correction amount of the real-time comprehensive efficiency is determined according to the difference between the power supply voltage and the rated voltage; If the power supply voltage is greater than the rated voltage, the real-time comprehensive efficiency is corrected according to the difference between the real-time comprehensive efficiency and the correction amount; If the power supply voltage is less than the rated voltage, the real-time comprehensive efficiency is corrected according to the sum of the real-time comprehensive efficiency and the correction amount.

[0032] For example, the value range of the correction amount can be preset, for example, the value range of the correction amount is 0 to 0.05. The corresponding relationship between the difference between the power supply voltage and the rated voltage and the correction amount can be preset, wherein the larger the difference, the larger the correction amount. If the power supply voltage is greater than the rated voltage, the difference between the real-time comprehensive efficiency and the correction amount can be determined as the corrected real-time comprehensive efficiency; if the power supply voltage is less than the rated voltage, the sum of the real-time comprehensive efficiency and the correction amount can be determined as the corrected real-time comprehensive efficiency. In this way, by correcting the real-time comprehensive efficiency, a more accurate real-time comprehensive efficiency can be obtained, thereby improving the reliability of the determined energy efficiency evaluation results.

[0033] In an optional embodiment, in S102, determining the real-time comprehensive efficiency according to the operating parameters includes: According to the operating parameters, determine the real-time active power loss and operating load factor of the motor; According to the real-time active power loss, determine the real-time comprehensive power loss of the motor; Determine the real-time comprehensive efficiency based on the operating load factor and the real-time comprehensive power loss.

[0034] For example, the real-time active power loss can be determined by the following formula: :

[0035] For example, the operating load factor can be determined by the following formula: :

[0036] in, is the no-load active power loss of the motor (in kW), is the active power loss of the motor at rated load (in kW), * , is the rated efficiency of the motor, is the rated power of the motor (in kW), is the no-load load factor, , is the output power of the motor (in kW), is the input power of the motor (in kW), is the no-load active power of the motor (in kW), and the real-time active power loss ΔP is in kW.

[0037] For example, the real-time comprehensive power loss is determined by the following formula: :

[0038] in, is the reactive economic equivalent (in kW / kvar), is the no-load reactive power of the motor (in kvar), is the reactive power of the motor at rated load (in kvar), where: ,in, The phase angle of the input motor phase current lagging behind the phase voltage during rated operation. ,in, is the no-load current of the motor (in A), U is the power supply voltage (in V), and the real-time comprehensive power loss The unit is kW. The result is the real-time reactive power of the motor.

[0039] When the motor is directly connected to the engine bus or directly connected to the bus that has been reactively compensated, Take 0.02~0.04; take 0.05~0.07 for secondary transformation; take 0.05~0.07 for tertiary transformation Take 0.08~0.1. When the power grid adopts reactive power compensation, the number of motor power supply transformations can be calculated from the compensation end.

[0040] For example, the real-time comprehensive efficiency can be determined by the following formula: :

[0041] in, is the operating load factor, is the rated power of the motor, It is the real-time comprehensive power loss.

[0042] In an optional embodiment, in S102, the rated comprehensive efficiency is determined according to the operating parameters, including: Determine the rated comprehensive power loss of the motor based on the operating parameters; Determine the rated overall efficiency based on the rated overall power loss.

[0043] For example, the rated combined power loss can be determined by the following formula: :

[0044] in, is the active power loss of the motor at rated load, is the reactive economic equivalent, Reactive power of the motor at rated load, rated comprehensive power loss The unit is kW.

[0045] For example, the rated overall efficiency can be determined by the following formula: :

[0046] in, is the rated power of the motor.

[0047] Based on the same inventive concept, the present disclosure also provides a motor energy efficiency evaluation device. Figure 2 is a block diagram of a motor energy efficiency evaluation device 200 provided by an exemplary embodiment of the present disclosure. The motor energy efficiency evaluation device 200 may include: An acquisition module 201 is used to acquire the operating parameters of the motor; A first determination module 202 is used to determine the rated comprehensive efficiency and the real-time comprehensive efficiency of the motor according to the operating parameters, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load; The second determination module 203 is used to determine the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

[0048] In the above technical solution, the operating parameters of the motor are first obtained; then, the rated comprehensive efficiency and real-time comprehensive efficiency of the motor are determined according to the operating parameters; then, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load. In this way, the performance of the motor can be accurately grasped, taking into account the energy efficiency performance of the motor under the rated load and the energy efficiency performance under the real-time load, thereby improving the reliability of the energy efficiency evaluation result.

[0049] Optionally, the second determination module 203 is used to determine the energy efficiency evaluation result of the motor in the following manner: Determining a reference comprehensive efficiency according to the rated comprehensive efficiency and a first preset coefficient; If the real-time comprehensive efficiency is greater than or equal to the rated comprehensive efficiency, the energy efficiency evaluation level is determined to be the first level; If the real-time comprehensive efficiency is less than the rated comprehensive efficiency and greater than the reference comprehensive efficiency, the energy efficiency evaluation level is determined to be the second level; If the real-time comprehensive efficiency is less than or equal to the reference comprehensive efficiency, determining that the energy efficiency evaluation level is the third level; Among them, the electric energy utilization effect of the motor represented by the first level is better than the electric energy utilization effect of the motor represented by the second level; the electric energy utilization effect of the motor represented by the second level is better than the electric energy utilization effect of the motor represented by the third level.

[0050] Optionally, the second determination module 203 is used to determine the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency when the following conditions are met: The power supply voltage of the motor does not exceed the rated voltage deviation range, the three-phase voltage imbalance does not exceed the imbalance threshold, the power supply frequency deviation does not exceed the frequency deviation range, and the voltage distortion rate does not exceed the distortion rate threshold.

[0051] Optionally, the motor energy efficiency evaluation device 200 may further include: A correction amount determination module, configured to determine a correction amount of the real-time comprehensive efficiency according to a difference between the power supply voltage and the rated voltage if the power supply voltage of the motor is different from the rated voltage; A first correction module, configured to correct the real-time comprehensive efficiency according to a difference between the real-time comprehensive efficiency and the correction amount if the power supply voltage is greater than the rated voltage; The second correction module is used to correct the real-time comprehensive efficiency according to the sum of the real-time comprehensive efficiency and the correction amount if the power supply voltage is less than the rated voltage.

[0052] Optionally, the first determining module 202 includes: A first determination submodule, used to determine the real-time active power loss and operating load factor of the motor according to the operating parameters; A second determination submodule is used to determine the real-time comprehensive power loss of the motor according to the real-time active power loss; The third determination submodule is used to determine the real-time comprehensive efficiency according to the operating load factor and the real-time comprehensive power loss.

[0053] Optionally, the first determination submodule is used to determine the real-time active power loss by the following formula: :

[0054] The operating load factor is determined by the following formula :

[0055] in, is the no-load active power loss of the motor, is the active power loss of the motor at rated load, * , is the rated efficiency of the motor, is the rated power of the motor, is the no-load load factor, , is the output power of the motor, is the input power of the motor, is the no-load active power of the motor.

[0056] Optionally, the second determination submodule is used to determine the real-time comprehensive power loss by the following formula: :

[0057] in, is the reactive economic equivalent, is the no-load reactive power of the motor, is the reactive power of the motor at rated load, where: ,in, The phase angle of the input motor phase current lagging behind the phase voltage during rated operation. ,in is the no-load current of the motor, and U is the power supply voltage.

[0058] Optionally, the third determination submodule is used to determine the real-time comprehensive efficiency by the following formula: :

[0059] in, is the operating load factor, is the rated power of the motor, It is the real-time comprehensive power loss.

[0060] Optionally, the first determining module 202 includes: a fourth determination submodule, configured to determine a rated comprehensive power loss of the motor according to the operating parameters; The fifth determination submodule is used to determine the rated comprehensive efficiency according to the rated comprehensive power loss.

[0061] Optionally, the fourth determination submodule is used to determine the rated comprehensive power loss by the following formula: :

[0062] in, is the active power loss of the motor at rated load, is the reactive economic equivalent, It is the reactive power of the motor at rated load.

[0063] Optionally, the fifth determination submodule is used to determine the rated comprehensive efficiency by the following formula: :

[0064] in, is the rated power of the motor.

[0065] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0066] Figure 3 FIG. 7 is a block diagram of an electronic device 700 according to an exemplary embodiment. Figure 3 As shown, the electronic device 700 may include: a processor 701 , a memory 702 . The electronic device 700 may also include one or more of a multimedia component 703 , an input / output (I / O) interface 704 , and a communication component 705 .

[0067] The processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the steps in the above-mentioned motor energy efficiency evaluation method. The memory 702 is used to store various types of data to support the operation of the electronic device 700. For example, these data may include instructions for any application or method used to operate on the electronic device 700, and application-related data, such as contact data, messages sent and received, pictures, audio, video, etc. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 703 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 702 or sent through the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 704 provides an interface between the processor 701 and other interface modules, and the other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 705 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0068] In an exemplary embodiment, the electronic device 700 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned motor energy efficiency evaluation method.

[0069] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned motor energy efficiency evaluation method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 702 including program instructions, and the above-mentioned program instructions can be executed by the processor 701 of the electronic device 700 to complete the above-mentioned motor energy efficiency evaluation method.

[0070] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the above-mentioned motor energy efficiency evaluation method when executed by the programmable device.

[0071] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0073] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for evaluating motor energy efficiency, characterized in that: The method comprises: Obtaining the operating parameters of the motor; Determine the rated comprehensive efficiency and the real-time comprehensive efficiency of the motor according to the operating parameters, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under real-time load; An energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

2. The method according to claim 1, characterized in that Determining the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency includes: Determining a reference comprehensive efficiency according to the rated comprehensive efficiency and a first preset coefficient; If the real-time comprehensive efficiency is greater than or equal to the rated comprehensive efficiency, the energy efficiency evaluation level is determined to be the first level; If the real-time comprehensive efficiency is less than the rated comprehensive efficiency and greater than the reference comprehensive efficiency, the energy efficiency evaluation level is determined to be the second level; If the real-time comprehensive efficiency is less than or equal to the reference comprehensive efficiency, determining that the energy efficiency evaluation level is the third level; Among them, the electric energy utilization effect of the motor represented by the first level is better than the electric energy utilization effect of the motor represented by the second level; the electric energy utilization effect of the motor represented by the second level is better than the electric energy utilization effect of the motor represented by the third level.

3. The method according to claim 1, characterized in that Determining the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency includes: When the following conditions are met, the energy efficiency evaluation result of the motor is determined according to the rated comprehensive efficiency and the real-time comprehensive efficiency: The power supply voltage of the motor does not exceed the rated voltage deviation range, the three-phase voltage imbalance does not exceed the imbalance threshold, the power supply frequency deviation does not exceed the frequency deviation range, and the voltage distortion rate does not exceed the distortion rate threshold.

4. The method according to claim 1, characterized in that: Before determining the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency, the method further includes: If the power supply voltage of the motor is different from the rated voltage, determining the correction amount of the real-time comprehensive efficiency according to the difference between the power supply voltage and the rated voltage; If the power supply voltage is greater than the rated voltage, the real-time comprehensive efficiency is corrected according to the difference between the real-time comprehensive efficiency and the correction amount; If the power supply voltage is less than the rated voltage, the real-time comprehensive efficiency is corrected according to the sum of the real-time comprehensive efficiency and the correction amount.

5. The method according to claim 1, characterized in that Determining the real-time comprehensive efficiency according to the operating parameters includes: Determining the real-time active power loss and operating load factor of the motor according to the operating parameters; Determining the real-time comprehensive power loss of the motor according to the real-time active power loss; The real-time comprehensive efficiency is determined according to the operating load factor and the real-time comprehensive power loss.

6. The method according to claim 5, characterized in that Determining the real-time active power loss and operating load factor of the motor according to the operating parameters includes: The real-time active power loss is determined by the following formula: : The operating load factor is determined by the following formula : in, is the no-load active power loss of the motor, is the active power loss of the motor at rated load, * , is the rated efficiency of the motor, is the rated power of the motor, is the no-load load factor, , is the output power of the motor, is the input power of the motor, is the no-load active power of the motor.

7. The method according to claim 6, characterized in that Determining the real-time comprehensive power loss of the motor according to the real-time active power loss includes: The real-time comprehensive power loss is determined by the following formula : in, is the reactive economic equivalent, is the no-load reactive power of the motor, is the reactive power of the motor at rated load, where: ,in, The phase angle of the input motor phase current lagging behind the phase voltage during rated operation. ,in is the no-load current of the motor, and U is the power supply voltage.

8. The method according to claim 7, characterized in that The determining the real-time comprehensive efficiency according to the operation load factor and the real-time comprehensive power loss includes: The real-time comprehensive efficiency is determined by the following formula : in, is the operating load factor, is the rated power of the motor, It is the real-time comprehensive power loss.

9. The method according to claim 1, characterized in that: Determining the rated comprehensive efficiency according to the operating parameters includes: Determining the rated comprehensive power loss of the motor according to the operating parameters; The rated comprehensive efficiency is determined according to the rated comprehensive power loss.

10. The method according to claim 9, characterized in that Determining the rated comprehensive power loss of the motor according to the operating parameters includes: The rated combined power loss is determined by the following formula : in, is the active power loss of the motor at rated load, is the reactive economic equivalent, is the reactive power of the motor at rated load.

11. The method according to claim 10, characterized in that Determining the rated comprehensive efficiency according to the rated comprehensive power loss includes: The rated overall efficiency is determined by the following formula : in, is the rated power of the motor.

12. A motor energy efficiency evaluation device, characterized in that: include: An acquisition module, used for acquiring the operating parameters of the motor; A first determination module is used to determine the rated comprehensive efficiency and the real-time comprehensive efficiency of the motor according to the operating parameters, wherein the rated comprehensive efficiency is the comprehensive efficiency of the motor under the rated load, and the real-time comprehensive efficiency is the comprehensive efficiency of the motor under the real-time load; The second determination module is used to determine the energy efficiency evaluation result of the motor according to the rated comprehensive efficiency and the real-time comprehensive efficiency.

13. A non-transitory computer-readable storage medium having a computer program stored thereon, 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 11 are implemented.

14. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 11.

15. 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 11 are implemented.

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