A method and system for determining property parameters of a target motor

Abstract

The present invention discloses a method and system for determining the attribute parameters of a target motor, and belongs to the field of motor control technology. The method of the present invention comprises: determining the initial motor size of the target motor to be controlled according to electromagnetic analysis; determining the amplitude-frequency characteristics of the injection signal suitable for the target motor; obtaining the adjusted motor size; determining the target motor's main body parameters according to the adjusted motor size of the target motor and the limiting factors of the target motor; adjusting the parameters and control strategy of the initial motor control model based on the target motor's main body parameters, obtaining the adjusted motor control model, and performing simulation operation on the adjusted motor control model; using the target motor's main body parameters and the adjusted motor control model as the target motor's attribute parameters. The present invention can meet the control requirements of the motor through the attribute parameters, and can effectively suppress the high-frequency harmonic characteristics of the motor.

Description

Technical Field

[0001] The present invention relates to the field of motor control technology, and more particularly, to a method and system for determining property parameters of a target motor. Background Art

[0002] The motor body with the characteristic of suppressing high-frequency harmonics has certain characteristics in terms of armature winding arrangement, stator and rotor tooth profiles, etc. How to understand and design the motor body that meets the control requirements is a key technical problem that needs to be solved. Summary of the invention

[0003] In view of the above problems, the present invention proposes a method for determining the property parameters of a target motor, comprising:

[0004] Determining initial motor size of a target motor to be controlled based on electromagnetic analysis;

[0005] Determining amplitude-frequency characteristics of an injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor;

[0006] The amplitude-frequency characteristics are calculated based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and the initial motor size is adjusted according to the calculation result to obtain an adjusted motor size;

[0007] determining a bulk parameter of the target motor according to an adjusted motor size of the target motor and a limiting factor of the target motor;

[0008] Based on the intrinsic parameters of the target motor, the parameters and control strategy of the initial motor control model are adjusted to obtain the adjusted motor control model, and simulation operation is performed on the adjusted motor control model to determine whether the adjusted motor control model can meet the control performance requirements of the motor and whether the motor reaches a deep magnetic saturation state. If the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state;

[0009] The intrinsic parameters of the target motor and the adjusted motor control model are used as attribute parameters of the target motor.

[0010] Optionally, the limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

[0011] Optionally, the control strategy includes: a control strategy for the stability of the motor control dynamic process and a control strategy for the inverter nonlinear factor compensation.

[0012] Optionally, the initial motor dimensions include: stator and rotor structural dimensions and armature winding distribution dimensions.

[0013] Optionally, after the simulation run, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state; if the adjusted motor control model cannot meet the control performance requirements of the motor, the intrinsic parameters of the target motor are adjusted, and then the parameters and control strategy of the initial motor control model are adjusted according to the adjusted intrinsic parameters, and the adjusted motor control model is obtained again.

[0014] Optionally, if the motor can reach a deep magnetic saturation state, the target motor's intrinsic parameters and the adjusted motor control model are used as the target motor's attribute parameters; if not, the motor's current intensity is increased to determine again whether the adjusted motor control model can meet the motor's control performance requirements.

[0015] The present invention also provides a system for determining property parameters of a target motor, comprising:

[0016] an initial unit for determining an initial motor size of a target motor to be controlled based on electromagnetic analysis;

[0017] A first calculation unit, configured to determine an amplitude-frequency characteristic of an injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor;

[0018] an adjusting unit, configured to calculate the amplitude-frequency characteristic based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and adjust the initial motor size according to the calculation result to obtain an adjusted motor size;

[0019] a second calculation unit, configured to determine a body parameter of the target motor according to an adjusted motor size of the target motor and a limiting factor of the target motor;

[0020] A judgment unit, used to adjust the parameters and control strategy of the initial motor control model based on the body parameters of the target motor, obtain the adjusted motor control model, perform simulation operation on the adjusted motor control model, judge whether the adjusted motor control model can meet the control performance requirements of the motor and judge whether the motor reaches a deep magnetic saturation state, if the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state;

[0021] The output unit is used to use the body parameters of the target motor and the adjusted motor control model as the attribute parameters of the target motor.

[0022] Optionally, the limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

[0023] Optionally, the control strategy includes: a control strategy for the stability of the motor control dynamic process and a control strategy for the inverter nonlinear factor compensation.

[0024] Optionally, the initial motor dimensions include: stator and rotor structural dimensions and armature winding distribution dimensions.

[0025] Optionally, after the simulation run, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state; if the adjusted motor control model cannot meet the control performance requirements of the motor, the intrinsic parameters of the target motor are adjusted, and then the parameters and control strategy of the initial motor control model are adjusted according to the adjusted intrinsic parameters, and the adjusted motor control model is obtained again.

[0026] Optionally, if the motor can reach a deep magnetic saturation state, the target motor's intrinsic parameters and the adjusted motor control model are used as the target motor's attribute parameters; if not, the motor's current intensity is increased to determine again whether the adjusted motor control model can meet the motor's control performance requirements.

[0027] In yet another aspect, the present invention further provides a computing device, comprising: one or more processors;

[0028] a processor for executing one or more programs;

[0029] When the one or more programs are executed by the one or more processors, the above-described method is implemented.

[0030] In yet another aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, the method described above is implemented.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention provides a method and system for determining the property parameters of a target motor, including: taking the intrinsic parameters of the target motor and an adjusted motor control model as the property parameters of the target motor, through which the control requirements of the motor can be met and the high-frequency harmonic characteristics of the motor can be effectively suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flow chart of the method of the present invention;

[0034] Figure 2 It is the principle diagram of the method of the present invention;

[0035] Figure 3 It is a structural diagram of the system of the present invention. DETAILED DESCRIPTION

[0036] Now, exemplary embodiments of the present invention are described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0037] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0038] The present invention will be further described below in conjunction with embodiments:

[0039] Embodiment 1:

[0040] The present invention proposes a method for determining the property parameters of a target motor, such as Figure 1 As shown, including:

[0041] Step 1: Determine the initial motor size of the target motor to be controlled based on electromagnetic analysis;

[0042] Step 2: determining the amplitude-frequency characteristics of the injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor;

[0043] Step 3: Calculate the amplitude-frequency characteristics based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and adjust the initial motor size according to the calculation result to obtain an adjusted motor size;

[0044] Step 4: determining the main body parameters of the target motor according to the adjusted motor size of the target motor and the limiting factors of the target motor;

[0045] Step 5: Based on the main body parameters of the target motor, adjust the parameters and control strategy of the initial motor control model, obtain the adjusted motor control model, perform simulation operation on the adjusted motor control model, determine whether the adjusted motor control model can meet the control performance requirements of the motor and determine whether the motor reaches a deep magnetic saturation state, if the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state;

[0046] Step 6: The intrinsic parameters of the target motor and the adjusted motor control model are used as the attribute parameters of the target motor.

[0047] The limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

[0048] Among them, the control strategy includes: a control strategy for the stability of the dynamic process of motor control and a compensation strategy for the nonlinear factors of the inverter.

[0049] Among them, the initial motor size includes: stator and rotor structure size and armature winding distribution size.

[0050] Among them, after the simulation run, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state. If the adjusted motor control model cannot meet the control performance requirements of the motor, the body parameters of the target motor are adjusted, and then the parameters and control strategy of the initial motor control model are adjusted according to the adjusted body parameters, and the adjusted motor control model is obtained again.

[0051] Among them, if the motor can reach a deep magnetic saturation state, the main body parameters of the target motor and the adjusted motor control model will be used as the attribute parameters of the target motor. If not, the current intensity of the motor will be increased to determine again whether the adjusted motor control model can meet the control performance requirements of the motor.

[0052] The principle of the present invention, such as Figure 2 As shown, the specific steps are as follows: 1) Preliminary design of the motor body size according to the electromagnetic field analysis theory; 2) Combined with the control model, analyze the amplitude-frequency characteristics of the optimal injection current signal; 3) Analyze the air gap magnetic field changes according to the signal characteristics, and further optimize the motor body size, including the stator and rotor structure and the armature winding distribution; 4) Improve the control model according to the optimized motor body structure, adjust the control strategy, and execute step 3; 5) Repeat steps 3-4-3 until the design meets the control performance. After the above algorithm is completed, the current intensity can be further increased, and steps 3-4-5 are repeated to complete the motor body design and control optimization under the working condition of more severe magnetic saturation. After the above steps are completed, the motor body structure and control characteristics with high-frequency harmonic suppression are obtained, and the design and control integrated optimization criteria of this type of motor are proposed.

[0053] Embodiment 2:

[0054] The present invention also proposes a system 200 for determining property parameters of a target motor, such as Figure 3 As shown, including:

[0055] An initial unit 201, for determining an initial motor size of a target motor to be controlled according to electromagnetic analysis;

[0056] A first calculation unit 202 is used to determine the amplitude-frequency characteristics of the injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor;

[0057] An adjustment unit 203 is used to calculate the amplitude-frequency characteristics based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and adjust the initial motor size according to the calculation result to obtain an adjusted motor size;

[0058] A second calculation unit 204, configured to determine a bulk parameter of the target motor according to the adjusted motor size of the target motor and the limiting factors of the target motor;

[0059] A judgment unit 205 is used to adjust the parameters and control strategy of the initial motor control model based on the body parameters of the target motor, obtain the adjusted motor control model, perform simulation operation on the adjusted motor control model, judge whether the adjusted motor control model can meet the control performance requirements of the motor and judge whether the motor reaches a deep magnetic saturation state, if the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state;

[0060] The output unit 206 is used to use the intrinsic parameters of the target motor and the adjusted motor control model as the attribute parameters of the target motor.

[0061] The limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

[0062] Among them, the control strategy includes: a control strategy for the stability of the dynamic process of motor control and a compensation strategy for the nonlinear factors of the inverter.

[0063] Among them, the initial motor size includes: stator and rotor structure size and armature winding distribution size.

[0064] Among them, after the simulation run, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state. If the adjusted motor control model cannot meet the control performance requirements of the motor, the body parameters of the target motor are adjusted, and then the parameters and control strategy of the initial motor control model are adjusted according to the adjusted body parameters, and the adjusted motor control model is obtained again.

[0065] Among them, if the motor can reach a deep magnetic saturation state, the main body parameters of the target motor and the adjusted motor control model will be used as the attribute parameters of the target motor. If not, the current intensity of the motor will be increased to determine again whether the adjusted motor control model can meet the control performance requirements of the motor.

[0066] Embodiment 3:

[0067] Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding functions, so as to implement the steps of the method in the above embodiment.

[0068] Embodiment 4:

[0069] Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both a built-in storage medium in a computer device and an extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the method in the above embodiment.

[0070] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0071] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0072] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0073] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0074] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0075] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining a property parameter of a target motor, characterized in that: The method comprises: Determining an initial motor size of a target motor to be controlled based on electromagnetic analysis; Determining amplitude-frequency characteristics of an injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor; The amplitude-frequency characteristics are calculated based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and the initial motor size is adjusted according to the calculation result to obtain an adjusted motor size; determining a bulk parameter of the target motor according to an adjusted motor size of the target motor and a limiting factor of the target motor; Based on the intrinsic parameters of the target motor, the parameters and control strategy of the initial motor control model are adjusted to obtain the adjusted motor control model, and simulation operation is performed on the adjusted motor control model to determine whether the adjusted motor control model can meet the control performance requirements of the motor and whether the motor reaches a deep magnetic saturation state. If the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state; The intrinsic parameters of the target motor and the adjusted motor control model are used as attribute parameters of the target motor; After the simulation runs, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state; if the adjusted motor control model cannot meet the control performance requirements of the motor, the body parameters of the target motor are adjusted, and according to the adjusted body parameters, the parameters and control strategy of the initial motor control model are adjusted to obtain the adjusted motor control model again; If the motor can reach a deep magnetic saturation state, the main body parameters of the target motor and the adjusted motor control model are used as the attribute parameters of the target motor. If not, the current intensity of the motor is increased and then it is determined again whether the adjusted motor control model can meet the control performance requirements of the motor.

2. The method according to claim 1, characterized in that The limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

3. The method according to claim 1, characterized in that The control strategy includes: a control strategy for the stability of the motor control dynamic process and a compensation strategy for the inverter nonlinear factors.

4. The method according to claim 1, characterized in that: The initial motor dimensions include: stator and rotor structural dimensions and armature winding distribution dimensions.

5. A system for determining property parameters of a target motor, characterized in that: The system comprises: an initial unit for determining an initial motor size of a target motor to be controlled based on electromagnetic analysis; A first calculation unit, configured to determine an amplitude-frequency characteristic of an injection signal suitable for the target motor based on a pre-established initial motor control model associated with the target motor; an adjusting unit, configured to calculate the amplitude-frequency characteristic based on a pre-established air gap magnetic field distribution model to obtain a calculation result, and adjust the initial motor size according to the calculation result to obtain an adjusted motor size; a second calculation unit, configured to determine a body parameter of the target motor according to an adjusted motor size of the target motor and a limiting factor of the target motor; A judgment unit, used to adjust the parameters and control strategy of the initial motor control model based on the body parameters of the target motor, obtain the adjusted motor control model, perform simulation operation on the adjusted motor control model, judge whether the adjusted motor control model can meet the control performance requirements of the motor and judge whether the motor reaches a deep magnetic saturation state, if the adjusted motor control model can meet the control performance requirements of the motor and the motor reaches a deep magnetic saturation state; An output unit, used for taking the main body parameters of the target motor and the adjusted motor control model as the attribute parameters of the target motor; After the simulation runs, if the adjusted motor control model can meet the control performance requirements of the motor, it is determined whether the motor can reach a deep magnetic saturation state; if the adjusted motor control model cannot meet the control performance requirements of the motor, the body parameters of the target motor are adjusted, and according to the adjusted body parameters, the parameters and control strategy of the initial motor control model are adjusted to obtain the adjusted motor control model again; If the motor can reach a deep magnetic saturation state, the main body parameters of the target motor and the adjusted motor control model are used as the attribute parameters of the target motor. If not, the current intensity of the motor is increased and then it is determined again whether the adjusted motor control model can meet the control performance requirements of the motor.

6. The system according to claim 5, characterized in that The limiting factors include at least one of the following: high-frequency harmonic factors, torque pulsation factors, and electromagnetic loss factors.

7. The system according to claim 5, characterized in that The control strategy includes: a control strategy for the stability of the motor control dynamic process and a compensation strategy for the inverter nonlinear factors.

8. The system according to claim 5, characterized in that The initial motor dimensions include: stator and rotor structural dimensions and armature winding distribution dimensions.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 4.

10. An electronic device comprising: processor; a memory for storing instructions executable by the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method according to any one of claims 1 to 4.

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