Method, apparatus and electronic device for constructing a stator winding

Abstract

The application discloses a method and device for constructing a stator winding and electronic equipment. The method comprises: obtaining motor configuration parameters of a synchronous motor; constructing a winding topology of a stator winding in the synchronous motor based on the motor configuration parameters, wherein the winding topology is used for representing a scheme of partitioning corresponding stator slots of the stator winding into multiple stator slot areas and configuring structures of the multiple stator slot areas, and the multiple stator slot areas correspond to different conductor layers; and constructing a structure of the stator winding based on the winding topology. The application solves the technical problem that the electromagnetic performance of the synchronous motor and the construction cost of the stator winding cannot be balanced when the stator winding is constructed in the related art.

Description

Technical Field

[0001] This invention relates to the field of motor construction, and more specifically, to a method, apparatus, and electronic device for constructing stator windings. Background Technology

[0002] Currently, the stator windings of synchronous motors are typically designed with single-layer or double-layer winding structures. If the number of turns is increased to improve electromagnetic performance such as synchronous reactance, the slot fill factor will be too high, leading to difficulties in winding and weak insulation, which will increase the manufacturing cost of the stator windings. On the other hand, if the structure is simplified to reduce manufacturing costs, the electromagnetic performance requirements of high reactance and high inertia cannot be met, affecting the electromagnetic performance of the synchronous motor. As a result, the traditional method of constructing stator windings usually cannot balance the construction cost of stator windings and the electromagnetic performance of synchronous motors.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method, apparatus, and electronic device for constructing stator windings, to at least solve the technical problem in the related art that the electromagnetic performance of synchronous motors and the construction cost of stator windings cannot be balanced when constructing stator windings.

[0005] According to one aspect of the present invention, a method for constructing a stator winding is provided, comprising: obtaining motor configuration parameters of a synchronous motor; constructing a winding topology of the stator winding in the synchronous motor based on the motor configuration parameters, wherein the winding topology is used to characterize the partitioning of the stator slots corresponding to the stator winding to obtain multiple stator slot regions, and the scheme for configuring the structure of the multiple stator slot regions, wherein the number of conductor layers corresponding to the multiple stator slot regions is different; and constructing the structure of the stator winding based on the winding topology.

[0006] Furthermore, based on the motor configuration parameters, the winding topology of the stator winding in the synchronous motor is constructed, including: determining the number of slots per pole and per phase and the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding based on the motor configuration parameters; dividing the stator slots corresponding to the stator winding based on the number of slots per pole and per phase to obtain multiple stator slot regions; determining the fill factor of the hybrid winding corresponding to the stator winding based on the equivalent cross-sectional area of ​​the conductor and the slot region parameters of the multiple stator slot regions; and constructing the winding topology based on the slot region parameters, the equivalent cross-sectional area of ​​the conductor, and the fill factor of the hybrid winding.

[0007] Furthermore, based on the motor configuration parameters, the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding is determined, including: based on the motor configuration parameters, determining the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding; based on the current per phase and the number of parallel branches per phase, determining the current of each conductor corresponding to the stator winding; and based on the current of each conductor and the allowable current density, determining the equivalent cross-sectional area of ​​the conductor.

[0008] Furthermore, based on the equivalent cross-sectional area of ​​the conductors and the slot parameters of multiple stator slot regions, the hybrid winding slot fill factor corresponding to the stator winding is determined, including: based on the slot parameters, determining the total number of conductors in each slot and the number of slots per pole and per phase corresponding to multiple stator slot regions; based on the total number of conductors in each slot and the minimum cross-sectional area of ​​the conductors corresponding to multiple stator slot regions, determining the total cross-sectional area of ​​the conductors corresponding to multiple stator slot regions; based on the total cross-sectional area of ​​the conductors corresponding to multiple stator slot regions and the slot geometric area corresponding to the stator winding, determining the slot fill factor corresponding to multiple stator slot regions; and based on the number of slots per pole and per phase corresponding to multiple stator slot regions, weighted and fused the slot fill factors corresponding to multiple stator slot regions to obtain the hybrid winding slot fill factor.

[0009] Furthermore, based on the motor configuration parameters, the number of slots per pole and per phase corresponding to the stator winding is determined, including: obtaining the design requirements of the synchronous motor; determining the total number of slots corresponding to the stator winding based on the design requirements; determining the number of pole pairs and the number of phases corresponding to the stator winding based on the motor configuration parameters; and determining the number of slots per pole and per phase based on the total number of slots, the number of pole pairs, and the number of phases.

[0010] Furthermore, the structure of the stator winding is constructed based on the winding topology, including: determining the reactance parameters corresponding to the winding topology based on motor configuration parameters and slot parameters of multiple stator slots, wherein the reactance parameters are used to reflect the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology; matching the reactance parameters with parameter indicators to obtain matching results; constructing the structure of the stator winding based on the winding topology in response to the matching of reactance parameters and parameter indicators; obtaining the indicator difference results in response to the mismatch between reactance parameters and parameter indicators, and adjusting the winding topology based on the indicator difference results to obtain a new winding topology, so as to re-execute the step of evaluating the winding topology based on motor configuration parameters and slot parameters of multiple stator slots to obtain parameter evaluation results, until the parameter evaluation results indicate that the winding topology does not need to be adjusted, and constructing the structure of the stator winding based on the winding topology, wherein the indicator difference results are used to characterize the difference between the reactance parameters and parameter indicators corresponding to the winding topology.

[0011] Furthermore, the reactance parameters include: the synchronous reactance and transient reactance corresponding to the stator winding; based on the motor configuration parameters and the slot parameters of multiple stator slots, the reactance parameters corresponding to the winding topology are determined, including: based on the motor configuration parameters and the slot parameters of multiple stator slots, the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity corresponding to the stator winding are determined; based on the main magnetizing inductance and synchronous angular velocity, the main magnetizing reactance corresponding to the stator winding is determined, and based on the stator leakage inductance and synchronous angular velocity, the equivalent leakage reactance corresponding to the stator winding is determined; based on the main magnetizing reactance and equivalent leakage reactance, the synchronous reactance is determined; and based on the main magnetizing inductance and stator leakage inductance, the transient reactance is determined.

[0012] Furthermore, based on the motor configuration parameters and the slot parameters of multiple stator slot regions, the main magnetizing inductance corresponding to the stator winding is determined, including: determining the fundamental coefficients of the slot regions corresponding to multiple stator slot regions based on the motor configuration parameters and the slot parameters of multiple stator slot regions; weighting and fusing the fundamental coefficients of the slot regions corresponding to multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent fundamental winding coefficients corresponding to the stator winding; determining the total number of turns per phase and the air gap magnetic parameters corresponding to the stator winding based on the motor configuration parameters; and determining the main magnetizing inductance based on the equivalent fundamental winding coefficients, the total number of turns per phase, and the air gap magnetic parameters.

[0013] Furthermore, based on the motor configuration parameters and the slot parameters of multiple stator slot regions, the stator leakage inductance corresponding to the stator winding is determined, including: determining the slot structure parameters corresponding to the stator winding based on the motor configuration parameters; determining the equivalent leakage permeability corresponding to multiple stator slot regions based on the slot parameters of multiple stator slot regions; weighting and fusing the equivalent leakage permeability corresponding to multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent leakage per pole and per phase corresponding to the stator winding; and determining the stator leakage inductance based on the slot structure parameters, the equivalent leakage per pole and per phase, and the leakage reactance correction coefficient.

[0014] Furthermore, based on the main magnetizing inductance and stator leakage inductance, the transient reactance is determined, including: obtaining the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding; determining the equivalent magnetic circuit inductance corresponding to the stator winding based on the main magnetizing inductance, the equivalent inductance of the excitation winding, and the equivalent inductance of the damping winding; determining the transient inductance corresponding to the stator winding based on the stator leakage inductance and the equivalent magnetic circuit inductance; and determining the transient reactance based on the transient inductance and the synchronous angular velocity.

[0015] According to another aspect of the present invention, a stator winding construction apparatus is also provided, comprising: a parameter acquisition module for acquiring motor configuration parameters of a synchronous motor; a topology construction module for constructing a winding topology of the stator winding in the synchronous motor based on the motor configuration parameters, wherein the winding topology is used to characterize a scheme for partitioning the stator slots corresponding to the stator winding to obtain multiple stator slot regions, and for configuring the structure of the multiple stator slot regions, wherein the multiple stator slot regions correspond to different numbers of conductor layers; and a winding construction module for constructing the structure of the stator winding based on the winding topology.

[0016] Furthermore, the topology construction module is also used to: determine the number of slots per pole and per phase and the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding based on the motor configuration parameters; divide the stator slots corresponding to the stator winding based on the number of slots per pole and per phase to obtain multiple stator slot regions; determine the fill factor of the hybrid winding corresponding to the stator winding based on the equivalent cross-sectional area of ​​the conductor and the slot region parameters of the multiple stator slot regions; and construct the winding topology based on the slot region parameters, the equivalent cross-sectional area of ​​the conductor, and the fill factor of the hybrid winding.

[0017] Furthermore, the topology building module is also used to: determine the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding based on the motor configuration parameters; determine the current of each conductor corresponding to the stator winding based on the current per phase and the number of parallel branches per phase; and determine the equivalent cross-sectional area of ​​the conductor based on the current of each conductor and the allowable current density.

[0018] Furthermore, the topology construction module is also used to: determine the total number of conductors in each slot and the number of slots per pole per phase corresponding to multiple stator slot regions based on slot region parameters; determine the total cross-sectional area of ​​conductors corresponding to multiple stator slot regions based on the total number of conductors in each slot and the minimum cross-sectional area of ​​conductors; determine the slot fill factor corresponding to multiple stator slot regions based on the total cross-sectional area of ​​conductors corresponding to multiple stator slot regions and the slot geometry area corresponding to the stator winding; and perform weighted fusion of the slot fill factors corresponding to multiple stator slot regions based on the number of slots per pole per phase corresponding to multiple stator slot regions to obtain the hybrid winding slot fill factor.

[0019] Furthermore, the topology building module is also used to: obtain the design requirements of the synchronous motor; determine the total number of slots corresponding to the stator winding based on the design requirements; determine the number of pole pairs and phases corresponding to the stator winding based on the motor configuration parameters; and determine the number of slots per pole and per phase based on the total number of slots, the number of pole pairs, and the number of phases.

[0020] Furthermore, the winding construction module is also used for: determining the reactance parameters corresponding to the winding topology based on motor configuration parameters and slot parameters of multiple stator slots, wherein the reactance parameters are used to reflect the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology; matching the reactance parameters with parameter indicators to obtain matching results; constructing the structure of the stator winding based on the winding topology in response to the matching of reactance parameters and parameter indicators; obtaining the indicator difference results in response to the mismatch between reactance parameters and parameter indicators, and adjusting the winding topology based on the indicator difference results to obtain a new winding topology, so as to re-execute the step of evaluating the winding topology based on motor configuration parameters and slot parameters of multiple stator slots to obtain parameter evaluation results, until the parameter evaluation results indicate that the winding topology does not need to be adjusted, and constructing the structure of the stator winding based on the winding topology, wherein the indicator difference results are used to characterize the difference between the reactance parameters and parameter indicators corresponding to the winding topology.

[0021] Furthermore, the reactance parameters include: the synchronous reactance and transient reactance corresponding to the stator winding; the winding construction module is also used to: determine the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity corresponding to the stator winding based on the motor configuration parameters and the slot parameters of multiple stator slots; determine the main magnetizing reactance corresponding to the stator winding based on the main magnetizing inductance and synchronous angular velocity, and determine the equivalent leakage reactance corresponding to the stator winding based on the stator leakage inductance and synchronous angular velocity; determine the synchronous reactance based on the main magnetizing reactance and equivalent leakage reactance; and determine the transient reactance based on the main magnetizing inductance and stator leakage inductance.

[0022] Furthermore, the winding construction module is also used to: determine the fundamental coefficients of multiple stator slot regions based on motor configuration parameters and slot parameters of multiple stator slot regions; perform weighted fusion of the fundamental coefficients of multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent fundamental winding coefficients corresponding to the stator winding; determine the total number of turns per phase and air gap magnetic parameters corresponding to the stator winding based on motor configuration parameters; and determine the main magnetizing inductance based on the equivalent fundamental winding coefficients, the total number of turns per phase, and the air gap magnetic parameters.

[0023] Furthermore, the winding construction module is also used to: determine the slot structure parameters corresponding to the stator winding based on the motor configuration parameters; determine the equivalent leakage permeability corresponding to multiple stator slots based on the slot parameters of multiple stator slots; perform weighted fusion of the equivalent leakage permeability corresponding to multiple stator slots based on the number of slots per pole and per phase corresponding to multiple stator slots to obtain the equivalent leakage per pole and per phase corresponding to the stator winding; and determine the stator leakage inductance based on the slot structure parameters, the equivalent leakage per pole and per phase, and the leakage reactance correction coefficient.

[0024] Furthermore, the winding construction module is also used to: obtain the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding; determine the equivalent magnetic circuit inductance corresponding to the stator winding based on the main magnetizing inductance, the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding; determine the transient inductance corresponding to the stator winding based on the stator leakage inductance and the equivalent magnetic circuit inductance; and determine the transient reactance based on the transient inductance and the synchronous angular velocity.

[0025] According to another aspect of the present invention, an electronic device is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0026] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0027] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0028] According to another aspect of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0029] According to another aspect of the present invention, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of the present invention.

[0030] In this embodiment of the invention, the motor configuration parameters of the synchronous motor are obtained; based on the motor configuration parameters, the winding topology of the stator winding in the synchronous motor is constructed. The winding topology characterizes the partitioning of the stator slots corresponding to the stator winding into multiple stator slot regions, and the configuration scheme of the structures of these multiple stator slot regions, with different conductor layers corresponding to the multiple stator slot regions. By constructing the structure of the stator winding based on the winding topology, and by analyzing the motor configuration parameters of the synchronous motor, the stator slots corresponding to the stator winding are dynamically divided into multiple stator slot regions with different conductor layers. This can improve the electromagnetic performance of the synchronous motor while reducing the corresponding construction cost, thereby solving the technical problem in related technologies where the electromagnetic performance of the synchronous motor and the construction cost of the stator winding cannot be balanced. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is a method for constructing a stator winding according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram illustrating the process of determining the slot fill factor of a hybrid winding according to an embodiment of this application;

[0034] Figure 3 This is a schematic diagram illustrating the process of determining a main magnetizing inductor according to an embodiment of this application;

[0035] Figure 4 This is a schematic diagram illustrating the process of determining stator leakage inductance according to an embodiment of this application;

[0036] Figure 5 This is a schematic diagram illustrating a transient reactance determination process according to an embodiment of this application;

[0037] Figure 6 This is a structural block diagram of a stator winding construction device according to an embodiment of this application. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] According to an embodiment of the present invention, a method for constructing a stator winding is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0041] Figure 1 This is a method for constructing a stator winding according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0042] Step S102: Obtain the motor configuration parameters of the synchronous motor.

[0043] The aforementioned synchronous motor can refer to a synchronous condenser used to compensate or regulate the electrical parameters of a motor system, such as grid voltage, reactive power, or dynamic voltage. Synchronous motors typically consist of rotor windings and a stator core, with the stator windings embedded in slots within the stator core.

[0044] The aforementioned motor configuration parameters can refer to parameters that constrain the electromagnetic design boundaries, geometric dimensions, and manufacturing process of the synchronous motor, and may include, but are not limited to: rated capacity, rated line voltage, frequency, number of pole pairs, number of phases, stator inner diameter, effective core length, rated efficiency, rated power factor, permissible air gap magnetic flux density, maximum permissible slot fill factor, and permissible conductor current density.

[0045] In one optional solution of this embodiment, considering that the traditional stator winding structure usually adopts a single-layer or double-layer fixed form, although this type of structure can meet the basic electromagnetic induction requirements, due to the simple topology, it is impossible to flexibly adjust the magnetic circuit parameters and lack the ability to jointly adjust the main flux linkage establishment and leakage flux path. This will result in the inability to simultaneously take into account the flux linkage establishment efficiency and slot fill factor control, and it will be impossible to balance the contradiction between electromagnetic performance adjustment and manufacturing process. That is, it is difficult to improve the flux linkage establishment efficiency of the stator winding without increasing manufacturing difficulty and manufacturing cost, which will affect the electromagnetic performance and reliability of the synchronous motor.

[0046] For example, while increasing the number of turns per phase winding in a synchronous motor can improve the magnetizing inductance of the synchronous motor, thereby enhancing the direct-axis synchronous reactance and reactive power support capability, this will lead to an exponential increase in the slot fill factor, resulting in increased processing difficulty for stator winding and insulation. If the leakage reactance structure is to be adjusted to improve transient reactance and thus improve the fault response speed of the synchronous motor, complex slot shapes or end layouts are often required, which further increases the corresponding processing difficulty.

[0047] Therefore, in order to balance the contradiction between electromagnetic performance adjustment and manufacturing processability, the processing system can construct a single-layer-double-layer hybrid stator winding topology by dividing the stator slots into functionally differentiated single-layer and double-layer slot regions and configuring the coil pitch differently. This constructs the stator winding structure, thereby improving the stator winding's independent control capability over direct-axis synchronous reactance and transient reactance. This ensures high flux linkage establishment efficiency and high reactance performance while reducing slot fill factor stress, achieving a balance between high-performance electromagnetic design and manufacturing processability.

[0048] Based on this, in order to fully determine the design boundary conditions of the stator winding and accurately divide the stator slots into functionally differentiated single-layer and double-layer slot regions, the processing system can first obtain the motor configuration parameters of the synchronous motor during the stator winding construction process. By using the motor configuration parameters, the rated operating conditions, physical structural limitations, and electromagnetic performance targets of the motor can be understood, thereby improving the accuracy and design efficiency of the winding topology construction and ensuring that the final generated winding structure meets both electromagnetic performance indicators and manufacturing process requirements.

[0049] In the process of obtaining the motor configuration parameters of the synchronous motor, the processing system can first obtain the configuration file of the synchronous motor from the locally stored motor design database or the user input interface, and then read the motor configuration parameters from the configuration file according to the preset parameter parsing rules or data mapping table, thereby completing the extraction of structured data and format standardization, and ensuring the consistency of input data.

[0050] Alternatively, the processing system can receive initial design parameters manually input by designers through a human-computer interaction interface, or automatically call simulation result data from upstream systems through a preset interface to obtain the aforementioned motor configuration parameters, thereby achieving seamless integration of multi-source design data and improving the flexibility and automation of the design process.

[0051] Step S104: Based on the motor configuration parameters, construct the winding topology of the stator winding in the synchronous motor.

[0052] Among them, the winding topology is used to characterize the partitioning of the stator slots corresponding to the stator winding to obtain multiple stator slot regions, and the configuration scheme of the structure of multiple stator slot regions, with different conductor layers corresponding to the multiple stator slot regions.

[0053] The aforementioned stator slot region can refer to a set of stator slots with specific winding structure characteristics that are divided according to electromagnetic function requirements, such as the establishment of main flux linkage or leakage flux control, as well as manufacturing process constraints, such as slot fill factor and winding difficulty.

[0054] In one optional embodiment, to balance the contradiction between high electromagnetic performance and manufacturability, after obtaining the motor configuration parameters of the synchronous motor, the processing system can construct the winding topology of the stator winding in the synchronous motor according to the motor configuration parameters, so as to divide the stator slots corresponding to the stator windings to obtain multiple stator slot regions. At the same time, the structure of multiple stator slot regions is configured, thereby flexibly adjusting the direct-axis synchronous reactance, transient reactance and slot fill factor distribution of the stator winding while keeping the total number of turns per phase unchanged. This improves the stator winding's ability to independently control electromagnetic indicators such as synchronous reactance and transient reactance, thereby realizing the coordinated design of stator winding structure, electromagnetic performance and manufacturability.

[0055] To accommodate the varying needs of different slot regions in terms of magnetomotive force contribution, leakage flux control, and winding process, the number of conductor layers varies across different stator slot regions. For example, some slot regions can be configured as single-layer slot regions (i.e., one conductor layer) to reduce slot fill factor, simplify winding process, and enhance fundamental magnetomotive force. Other slot regions can be configured as double-layer slot regions (i.e., two conductor layers) to improve slot space utilization, adjust leakage flux path, and thus regulate transient reactance.

[0056] Step S106: Construct the structure of the stator winding based on the winding topology.

[0057] In one optional embodiment, after constructing the winding topology of the stator winding, the processing system can use the winding topology to construct the stator winding corresponding to the synchronous motor, thereby ensuring that the constructed stator winding can accurately map the partition structure, conductor arrangement and electrical connection relationship in the winding topology to form a physical entity, thereby meeting the electromagnetic performance index requirements and the feasibility of the manufacturing process.

[0058] In this embodiment of the invention, the motor configuration parameters of the synchronous motor are obtained; based on the motor configuration parameters, the winding topology of the stator winding in the synchronous motor is constructed. The winding topology characterizes the partitioning of the stator slots corresponding to the stator winding into multiple stator slot regions, and the configuration scheme of the structures of these multiple stator slot regions, with different conductor layers corresponding to the multiple stator slot regions. By constructing the structure of the stator winding based on the winding topology, and by analyzing the motor configuration parameters of the synchronous motor, the stator slots corresponding to the stator winding are dynamically divided into multiple stator slot regions with different conductor layers. This can improve the electromagnetic performance of the synchronous motor while reducing the corresponding construction cost, thereby solving the technical problem in related technologies where the electromagnetic performance of the synchronous motor and the construction cost of the stator winding cannot be balanced.

[0059] Furthermore, based on the motor configuration parameters, the winding topology of the stator winding in the synchronous motor is constructed, including: determining the number of slots per pole and per phase and the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding based on the motor configuration parameters; dividing the stator slots corresponding to the stator winding based on the number of slots per pole and per phase to obtain multiple stator slot regions; determining the fill factor of the hybrid winding corresponding to the stator winding based on the equivalent cross-sectional area of ​​the conductor and the slot region parameters of the multiple stator slot regions; and constructing the winding topology based on the slot region parameters, the equivalent cross-sectional area of ​​the conductor, and the fill factor of the hybrid winding.

[0060] The aforementioned equivalent conductor cross-sectional area can refer to the geometric cross-sectional area obtained by abstracting the set of conductors in the slot, used to characterize the current-carrying capacity and ignoring insulation details. By using the equivalent conductor cross-sectional area to replace the total area of ​​all conductors in the actual slot, the consistency of the electromagnetic calculation model and the process constraint model in terms of parameter scale can be ensured, thereby improving the calculation efficiency and iteration speed of winding topology construction.

[0061] The aforementioned hybrid winding slot fill factor can be abstracted from the total complex geometric space occupied by various conductors and insulating materials actually distributed within the stator slot. It serves as a constraint index for quantitatively evaluating the utilization of stator slot space and the feasibility of the winding process. By replacing complex 3D solid modeling or detailed local micro-arrangement with the hybrid winding slot fill factor, the computational efficiency and iteration speed in the topology construction stage can be improved. This allows for the rapid selection of winding structure schemes that meet the slot fill factor constraints while ensuring engineering manufacturing feasibility.

[0062] In one optional embodiment, to improve the accuracy of constructing the winding topology, during the process of constructing the winding topology based on the motor configuration parameters, the processing system can first determine the number of slots per pole and per phase of the stator winding and the equivalent cross-sectional area of ​​the conductor based on the obtained motor configuration parameters. The number of slots per pole and per phase reflects the pole-slot matching relationship and fundamental magnetomotive force distribution characteristics of the synchronous motor, and the equivalent cross-sectional area of ​​the conductor reflects the conductor size requirements to meet the rated current and thermal load requirements. This establishes an initial electromagnetic-process constraint basis and ensures the rationality of the constructed winding topology.

[0063] After determining the number of slots per pole and phase and the equivalent cross-sectional area of ​​the conductor, the processing system can divide the stator slots corresponding to the stator winding according to the number of slots per pole and phase, obtaining the above-mentioned multiple stator slot regions. Based on the equivalent cross-sectional area of ​​the conductor and the slot region parameters of the multiple stator slot regions, the system determines the fill factor of the hybrid winding corresponding to the stator winding. The fill factor of the hybrid winding reflects the utilization of stator slot space and the feasibility of the winding process, thereby accurately assessing whether the current slot region division result meets the manufacturing process boundary conditions.

[0064] Finally, after determining the slot fill factor of the hybrid winding, the processing system can summarize the above-mentioned slot parameters, conductor equivalent cross-sectional area and hybrid winding slot fill factor, construct the above-mentioned winding topology, and thus generate a preliminary winding structure model that can simultaneously meet the performance indicators of direct-axis synchronous reactance, transient reactance and slot fill factor process constraints.

[0065] Furthermore, based on the motor configuration parameters, the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding is determined, including: based on the motor configuration parameters, determining the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding; based on the current per phase and the number of parallel branches per phase, determining the current of each conductor corresponding to the stator winding; and based on the current of each conductor and the allowable current density, determining the equivalent cross-sectional area of ​​the conductor.

[0066] In one optional embodiment, in order to improve the accuracy of the determined conductor equivalent cross-sectional area, the processing system can first determine the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding based on the obtained motor configuration parameters. The current per phase reflects the rated load capacity and total current carrying capacity of the motor, the number of parallel branches per phase reflects the current shunting structure and electrical connection method inside the stator winding, and the allowable current density reflects the thermal design constraints of the synchronous motor.

[0067] Then, the processing system can determine the current of each conductor corresponding to the stator winding based on the current of each phase and the number of parallel branches of each phase, so as to reflect the actual current-carrying load of a single conductor under rated operating conditions through the current of each conductor.

[0068] Finally, the processing system can determine the equivalent cross-sectional area of ​​the stator winding based on the determined current of each conductor and the aforementioned allowable current density, thereby improving the accuracy of the equivalent cross-sectional area of ​​the conductor.

[0069] For ease of understanding, the formula for determining the equivalent cross-sectional area of ​​a conductor can be:

[0070] .

[0071] in, This represents the equivalent cross-sectional area of ​​the conductor. This represents the current in each phase. This represents the number of parallel branches per phase. This represents the allowable current density. This represents the current in each conductor.

[0072] Furthermore, based on the equivalent cross-sectional area of ​​the conductors and the slot parameters of multiple stator slot regions, the hybrid winding slot fill factor corresponding to the stator winding is determined, including: based on the slot parameters, determining the total number of conductors in each slot and the number of slots per pole and per phase corresponding to multiple stator slot regions; based on the total number of conductors in each slot and the minimum cross-sectional area of ​​the conductors corresponding to multiple stator slot regions, determining the total cross-sectional area of ​​the conductors corresponding to multiple stator slot regions; based on the total cross-sectional area of ​​the conductors corresponding to multiple stator slot regions and the slot geometric area corresponding to the stator winding, determining the slot fill factor corresponding to multiple stator slot regions; and based on the number of slots per pole and per phase corresponding to multiple stator slot regions, weighted and fused the slot fill factors corresponding to multiple stator slot regions to obtain the hybrid winding slot fill factor.

[0073] Figure 2 This is a schematic diagram illustrating the process of determining the slot fill factor of a hybrid winding according to an embodiment of this application. Figure 2 As shown, in order to accurately determine the fill factor of the mixed winding corresponding to the stator winding, the processing system can first determine the total number of conductors in each slot and the number of slots in each pole and phase corresponding to the multiple stator slot regions based on the slot region parameters. The total number of conductors in each slot reflects the conductor filling quantity and space occupancy base in the slot region, and the number of slots in each pole and phase reflects the distribution ratio and weight of the slot region in the overall winding.

[0074] Then, the processing system can determine the total conductor cross-sectional area corresponding to multiple stator slot regions based on the total number of conductors in each slot and the minimum conductor cross-sectional area, and determine the slot fill factor corresponding to multiple stator slot regions based on the total conductor cross-sectional area corresponding to multiple stator slot regions and the slot geometry area corresponding to the stator winding.

[0075] Finally, in order to eliminate the differences in slot fill factor values ​​caused by different conductor layers in different slot regions and to reflect the overall average space utilization of the hybrid winding, the processing system can use the number of slots per pole per phase corresponding to multiple stator slot regions to perform weighted fusion of the slot fill factors corresponding to multiple stator slot regions, so as to calculate the equivalent hybrid winding slot fill factor that can represent the average filling degree of the entire stator winding, thereby ensuring the accuracy of the obtained hybrid winding slot fill factor.

[0076] For ease of understanding, the formula for determining the fill factor corresponding to the stator slot region can be:

[0077] ;

[0078] ;

[0079] .

[0080] in, This represents the slot fill rate. This represents the total cross-sectional area of ​​the conductor. This represents the total number of conductors in each slot. This represents the minimum cross-sectional area of ​​each conductor.

[0081] Furthermore, based on the motor configuration parameters, the number of slots per pole and per phase corresponding to the stator winding is determined, including: obtaining the design requirements of the synchronous motor; determining the total number of slots corresponding to the stator winding based on the design requirements; determining the number of pole pairs and the number of phases corresponding to the stator winding based on the motor configuration parameters; and determining the number of slots per pole and per phase based on the total number of slots, the number of pole pairs, and the number of phases.

[0082] In one optional embodiment, when determining the number of slots per pole per phase corresponding to the stator winding, the processing system can first obtain the design requirements of the synchronous motor, and then determine the total number of slots corresponding to the stator winding based on the design requirements, so as to reflect the influence of the physical structure scale of the motor and the slot pitch on the main magnetic flux distribution through the total number of slots.

[0083] After determining the total number of slots corresponding to the stator windings, the processing system can further determine the number of pole pairs and phases of the stator windings based on the acquired motor configuration parameters. The number of pole pairs determines the synchronous speed and mechanical pole pitch of the motor, which in turn affects the tooth pitch and leakage flux path. The number of phases determines the electrical symmetry of the windings and the basis for current distribution. Finally, the processing system can determine the number of slots per pole and per phase of the stator windings based on the determined total number of slots, pole pairs, and phases.

[0084] For ease of understanding, the formula for determining the number of slots per pole per phase can be:

[0085] .

[0086] in, This represents the number of slots per pole per phase. This represents the total number of slots. This represents the extreme logarithm. It represents the phase number.

[0087] Furthermore, the structure of the stator winding is constructed based on the winding topology, including: determining the reactance parameters corresponding to the winding topology based on motor configuration parameters and slot parameters of multiple stator slots, wherein the reactance parameters are used to reflect the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology; matching the reactance parameters with parameter indicators to obtain matching results; constructing the structure of the stator winding based on the winding topology in response to the matching of reactance parameters and parameter indicators; obtaining the indicator difference results in response to the mismatch between reactance parameters and parameter indicators, and adjusting the winding topology based on the indicator difference results to obtain a new winding topology, so as to re-execute the step of evaluating the winding topology based on motor configuration parameters and slot parameters of multiple stator slots to obtain parameter evaluation results, until the parameter evaluation results indicate that the winding topology does not need to be adjusted, and constructing the structure of the stator winding based on the winding topology, wherein the indicator difference results are used to characterize the difference between the reactance parameters and parameter indicators corresponding to the winding topology.

[0088] The aforementioned reactance parameters can refer to indicators used to reflect the electromagnetic performance of the stator winding, such as reflecting the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology. They can include both synchronous reactance and transient reactance parameters.

[0089] In one optional embodiment, considering that the winding topology constructed based on the motor configuration parameters may fail to meet the preset requirements of the synchronous motor for high direct-axis synchronous reactance, ideal transient reactance, and dynamic reactive power support capability due to unreasonable slot division, improper coil pitch configuration, or other reasons, if the constructed winding topology is directly used to construct the stator winding structure, situations may arise where the reactance performance is substandard, transient response is lagging, or the grid stability indicators cannot be met.

[0090] Therefore, in order to ensure the accuracy of the stator winding structure construction, the processing system can first evaluate the constructed winding topology to determine whether the winding topology can be applied to the stator winding structure construction process.

[0091] The reactance parameters of the stator winding directly determine the steady-state reactive power output capability of the synchronous motor, as well as the fault current suppression and voltage recovery speed during a fault, and are also affected by the winding topology.

[0092] Therefore, the processing system can start from the reactance parameters corresponding to the winding topology, and perform quantitative verification and error analysis on the electromagnetic performance corresponding to the winding topology, such as steady-state reactive power support capability and transient fault response capability, so as to accurately assess whether the current winding structure meets the design specifications.

[0093] Based on this, the processing system can first determine the reactance parameters corresponding to the winding topology according to the obtained motor configuration parameters and the slot parameters of multiple stator slots, so as to intuitively reflect the electrical characteristics of the current winding topology under steady-state and transient conditions through the reactance parameters.

[0094] After determining the reactance parameters corresponding to the winding topology, the processing system can match the reactance parameters with parameter indices, such as the preset target direct-axis synchronous reactance value and target transient reactance value, to obtain the matching results mentioned above.

[0095] If the matching result shows that the reactance parameters and parameter indicators match, it means that the current winding topology meets the electromagnetic performance design requirements and has engineering application feasibility. At this time, the processing system can construct the structure of the stator winding according to the winding topology, thereby outputting the final stator winding structure design scheme and completing the transformation from topology design to physical construction.

[0096] If the matching results show that the reactance parameters and parameter indicators do not match, it means that the electromagnetic performance of the current winding topology deviates from the expected target and structural correction is required. At this time, the processing system can adjust the winding topology to improve the electromagnetic performance matching degree and design accuracy of the winding topology.

[0097] Correspondingly, during the process of adjusting the winding topology, the processing system can first obtain the difference between the reactance parameters and parameter indices corresponding to the winding topology, that is, obtain the above-mentioned index difference results. Then, the winding topology is adjusted using the index difference results to obtain a new winding topology. Then, the step of evaluating the winding topology based on the motor configuration parameters and the slot parameters of multiple stator slots is re-executed to obtain the parameter evaluation results. This process continues until the parameter evaluation results indicate that the winding topology does not need to be adjusted. Based on the winding topology, the structure of the stator winding is constructed.

[0098] Furthermore, the reactance parameters include: the synchronous reactance and transient reactance corresponding to the stator winding; based on the motor configuration parameters and the slot parameters of multiple stator slots, the reactance parameters corresponding to the winding topology are determined, including: based on the motor configuration parameters and the slot parameters of multiple stator slots, the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity corresponding to the stator winding are determined; based on the main magnetizing inductance and synchronous angular velocity, the main magnetizing reactance corresponding to the stator winding is determined, and based on the stator leakage inductance and synchronous angular velocity, the equivalent leakage reactance corresponding to the stator winding is determined; based on the main magnetizing reactance and equivalent leakage reactance, the synchronous reactance is determined; and based on the main magnetizing inductance and stator leakage inductance, the transient reactance is determined.

[0099] In one optional embodiment, in order to improve the accuracy of the determined reactance parameters, the processing system can first determine the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity of the stator winding based on the acquired motor configuration parameters and the slot parameters of multiple stator slots. The main magnetizing inductance reflects the ability of the stator winding to establish the main magnetic flux linkage and the reactive component required for the excitation current. The stator leakage inductance reflects the magnetic reluctance characteristics on the leakage flux path and the ability to limit the leakage flux. The synchronous angular velocity characterizes the frequency characteristics of the motor's rotating magnetic field and the angular frequency reference for reactance calculation.

[0100] Then, the processing system can determine the main magnetizing reactance of the stator winding based on the main magnetizing inductance and the synchronous angular velocity, and determine the equivalent leakage reactance of the stator winding based on the stator leakage inductance and the synchronous angular velocity. The main magnetizing reactance can be used to evaluate the reactive power support capability of the synchronous condenser under steady-state conditions and the fundamental contribution of the direct-axis synchronous reactance. The equivalent leakage reactance can be used to quantify the influence of slot leakage flux, tooth tip leakage flux, and end leakage flux on the total reactance, and is used as the stator-side leakage inductance component in transient reactance calculations.

[0101] Finally, the processing system can determine the aforementioned synchronization reactance using the main magnetizing reactance and the equivalent leakage reactance. Similarly, the processing system can determine the aforementioned transient reactance using the main magnetizing inductance and the stator leakage inductance.

[0102] For ease of understanding, the formula for determining the synchronization reactance can be:

[0103] ;

[0104] ;

[0105] ;

[0106] in, This represents synchronous reactance. This represents the equivalent leakage reactance. This represents the main magnetizing reactance. This represents the synchronous angular velocity. This represents the main magnetizing inductor. This represents the stator leakage inductance.

[0107] The formula for determining transient reactance mentioned above can be:

[0108] ;

[0109] .

[0110] in, This represents transient reactance. This represents transient inductance. This represents the equivalent inductance of the excitation winding. This represents the equivalent inductance of the damping winding.

[0111] Furthermore, based on the motor configuration parameters and the slot parameters of multiple stator slot regions, the main magnetizing inductance corresponding to the stator winding is determined, including: determining the fundamental coefficients of the slot regions corresponding to multiple stator slot regions based on the motor configuration parameters and the slot parameters of multiple stator slot regions; weighting and fusing the fundamental coefficients of the slot regions corresponding to multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent fundamental winding coefficients corresponding to the stator winding; determining the total number of turns per phase and the air gap magnetic parameters corresponding to the stator winding based on the motor configuration parameters; and determining the main magnetizing inductance based on the equivalent fundamental winding coefficients, the total number of turns per phase, and the air gap magnetic parameters.

[0112] The aforementioned equivalent fundamental winding coefficient can be an abstraction of the differences in spatial distribution between single-layer and double-layer slot regions and their contribution to the fundamental magnetomotive force, used to determine the overall fundamental electromotive force or magnetomotive force generation capability of the hybrid winding.

[0113] Figure 3 This is a schematic diagram illustrating the process of determining a main magnetizing inductor according to an embodiment of this application, as shown below. Figure 3 As shown, in order to improve the accuracy of determining the main magnetizing inductance corresponding to the stator winding, the processing system can first determine the fundamental frequency coefficient of the slot region corresponding to multiple stator slot regions based on the acquired configuration parameters and slot region parameters of multiple stator slot regions. This allows for the quantification of the structural characteristics of single-layer and double-layer slot regions, such as the degree of pitch shortness and the degree of distribution dispersion, and their impact on the weakening or strengthening of the fundamental magnetic potential.

[0114] Then, the processing system can perform weighted fusion of the fundamental coefficients of the stator slot regions corresponding to the number of slots per pole per phase corresponding to the multiple stator slot regions to obtain the equivalent fundamental winding coefficients of the stator winding, thereby reducing the local deviation caused by the single slot region structure and obtaining macroscopic equivalent parameters that can represent the electromagnetic performance of the entire stator winding.

[0115] Meanwhile, the processing system can determine the total number of turns per phase and the air gap magnetic parameters of the stator winding based on the motor configuration parameters. The total number of turns per phase reflects the total magnetomotive force generated by the winding, and the air gap magnetic parameters reflect the magnetic reluctance characteristics and air gap magnetic field distribution in the magnetic circuit.

[0116] After determining the equivalent fundamental winding coefficient, total number of turns per phase, and air gap magnetic parameters, the processing system can determine the main magnetizing inductance based on these parameters, thereby ensuring the accuracy of the determined main magnetizing inductance.

[0117] For ease of understanding, the formula for determining the main magnetizing inductance can be:

[0118] ;

[0119] ;

[0120] ;

[0121] ;

[0122] .

[0123] in, This represents the correction coefficient set under constraints such as tooth tip leakage flux and slotting effect. This represents the vacuum permeability. This represents the effective core length. This represents the mechanical pole pitch. This represents the equivalent air gap length. This represents the equivalent fundamental winding coefficient. This represents the number of slots per pole per phase, including the number of single-layer slots per pole per phase. and the number of double-layer slots per pole per phase , The fundamental frequency coefficient of the single-layer trench region is represented by the fundamental frequency coefficient of the trench region. This represents the fundamental frequency coefficient corresponding to the double-layered groove region. This represents the pitch coefficient corresponding to the stator slot area. This represents the distribution coefficient corresponding to the stator slot area. This represents the electrical short-pitch angle corresponding to the stator slot region. This represents the theoretical full range corresponding to the stator slot area. This represents the electrical pitch corresponding to the stator slot area. This represents the electrical angle slot pitch corresponding to the stator slot area.

[0124] Furthermore, based on the motor configuration parameters and the slot parameters of multiple stator slot regions, the stator leakage inductance corresponding to the stator winding is determined, including: determining the slot structure parameters corresponding to the stator winding based on the motor configuration parameters; determining the equivalent leakage permeability corresponding to multiple stator slot regions based on the slot parameters of multiple stator slot regions; weighting and fusing the equivalent leakage permeability corresponding to multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent leakage per pole and per phase corresponding to the stator winding; and determining the stator leakage inductance based on the slot structure parameters, the equivalent leakage per pole and per phase, and the leakage reactance correction coefficient.

[0125] The aforementioned equivalent leakage permeability refers to the abstraction of the reciprocal of the magnetic reluctance along the main magnetic flux path that does not pass through the air gap, generated between the conductor and the slot wall in the stator slot, in the air gap at the tooth tip, and in the space at the end of the coil. It is used to quantify the magnitude of the stator winding leakage flux and the corresponding leakage reactance contribution as a comprehensive geometric and topological parameter. By replacing the three-dimensional leakage magnetic field distribution or local magnetic field line tracing model with the equivalent leakage permeability, the complexity of electromagnetic calculations can be reduced, and the efficiency and iteration speed of leakage parameter calculation can be improved.

[0126] Figure 4 This is a schematic diagram illustrating the process of determining stator leakage inductance according to an embodiment of this application, as shown below. Figure 4 As shown, in order to improve the accuracy of determining the stator leakage inductance corresponding to the stator winding, the processing system can first determine the slot structure parameters corresponding to the stator winding based on the obtained motor configuration parameters, such as slot opening width, slot bottom width, slot height, slot wedge thickness, conductor layering position, end winding projection size and insulation thickness, etc., so as to provide the geometric boundary conditions required for calculating slot leakage permeability, tooth tip leakage permeability and end leakage permeability through the slot structure parameters.

[0127] Then, the processing system can determine the equivalent leakage flux of multiple stator slot regions based on the slot parameters of multiple stator slot regions. Then, based on the number of slots per pole and per phase corresponding to multiple stator slot regions, the equivalent leakage flux of multiple stator slot regions is weighted and fused to obtain the equivalent leakage flux of each pole and each phase corresponding to the stator winding. In this way, the difference in leakage flux structure of different slot regions (single layer / double layer) is eliminated by the equivalent leakage flux of each pole and each phase, and a unified index that can represent the average leakage flux characteristics of the entire motor is obtained.

[0128] Finally, the processing system can determine the stator leakage inductance mentioned above based on the tank area structural parameters, the equivalent leakage permeability per pole per phase, and the leakage reactance correction coefficient.

[0129] For ease of understanding, the formula for determining the stator leakage inductance can be:

[0130] ;

[0131] ;

[0132] .

[0133] in, This represents the total number of turns per phase. This represents the equivalent leakage per pole per phase. This represents the equivalent leakage permeability corresponding to the stator slot region. This represents the leakage permeability of the slot section. This represents the leakage permeability at the tooth tip. This represents the end leakage permeability.

[0134] Furthermore, based on the main magnetizing inductance and stator leakage inductance, the transient reactance is determined, including: obtaining the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding; determining the equivalent magnetic circuit inductance corresponding to the stator winding based on the main magnetizing inductance, the equivalent inductance of the excitation winding, and the equivalent inductance of the damping winding; determining the transient inductance corresponding to the stator winding based on the stator leakage inductance and the equivalent magnetic circuit inductance; and determining the transient reactance based on the transient inductance and the synchronous angular velocity.

[0135] The equivalent inductance of the excitation winding mentioned above refers to the abstraction of the physical inductance of the rotor excitation winding itself and the mutual inductance coupling effect between it and the stator main magnetic circuit. It is a key electromagnetic parameter used to quantify the damping effect of the excitation circuit on the stator flux linkage change and the energy storage capacity during transient processes. By replacing the complex detailed geometry and transient electromagnetic field distribution of the rotor excitation winding with the equivalent inductance of the excitation winding, the magnetic circuit coupling calculation model can be simplified, and the convergence speed and engineering usability of the transient parameter solution can be improved.

[0136] The aforementioned equivalent inductance of the damping winding refers to the abstraction of the physical inductance of the rotor damping winding (or starting winding) itself and its mutual inductance coupling effect with the stator main magnetic circuit. It is a key electromagnetic parameter used to quantify the role of the damping circuit in suppressing stator flux linkage abrupt changes and providing subtransient support during transient processes. By replacing the complex details of the specific conductor bar distribution and eddy current effects of the damping winding with the equivalent inductance of the damping winding, the distributed parameters can be centrally processed, reducing the computational complexity of transient electromagnetic transient processes.

[0137] The aforementioned equivalent magnetic circuit inductance refers to the abstracted parallel / series combination of magnetic reluctance paths formed on the magnetic circuit by the main magnetizing inductance, the equivalent inductance of the excitation winding, and the equivalent inductance of the damping winding. It characterizes the comprehensive equivalent inductance value, from the stator side, after deducting stator leakage inductance, representing the remaining effective magnetizing inductance during transient processes. By replacing the complex dynamic flux linkage equations between multiple windings with the equivalent magnetic circuit inductance for real-time solving, the calculation of transient reactance can be transformed into static parameter calculation, improving computational efficiency.

[0138] Figure 5 This is a schematic diagram illustrating a transient reactance determination process according to an embodiment of this application, as shown below. Figure 5 As shown, in order to ensure the accuracy of the determined transient reactance, the processing system can first obtain the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding. Then, based on the main magnetizing inductance, the equivalent inductance of the excitation winding, and the equivalent inductance of the damping winding, the equivalent magnetic circuit inductance of the stator winding is determined. This allows the equivalent magnetic circuit inductance to accurately reflect the "shielding" or "shunting" effect of the excitation and damping windings on the main magnetic flux, thereby accurately calculating the effective flux linkage during the transient period.

[0139] Finally, the processing system can determine the transient reactance corresponding to the stator winding based on the stator leakage inductance and the equivalent magnetic circuit inductance, thereby ensuring the accuracy of the determined transient reactance.

[0140] According to an embodiment of the present invention, an apparatus embodiment for a method of constructing a stator winding is provided. It should be noted that the apparatus can be used to perform the above-described method of constructing a stator winding. Figure 6 This is a structural block diagram of a stator winding construction device according to an embodiment of this application, such as... Figure 6 As shown, the device may include: a parameter acquisition module 602, a topology construction module 604, and a winding construction module 606.

[0141] The parameter acquisition module 602 is used to acquire the motor configuration parameters of the synchronous motor; the topology construction module 604 is used to construct the winding topology of the stator winding in the synchronous motor based on the motor configuration parameters. The winding topology is used to characterize the partitioning of the stator slots corresponding to the stator winding to obtain multiple stator slot regions, and the configuration scheme of the structure of the multiple stator slot regions. The number of conductor layers corresponding to the multiple stator slot regions is different; the winding construction module 606 is used to construct the structure of the stator winding based on the winding topology.

[0142] Furthermore, the topology construction module is also used to: determine the number of slots per pole and per phase and the equivalent cross-sectional area of ​​the conductor corresponding to the stator winding based on the motor configuration parameters; divide the stator slots corresponding to the stator winding based on the number of slots per pole and per phase to obtain multiple stator slot regions; determine the fill factor of the hybrid winding corresponding to the stator winding based on the equivalent cross-sectional area of ​​the conductor and the slot region parameters of the multiple stator slot regions; and construct the winding topology based on the slot region parameters, the equivalent cross-sectional area of ​​the conductor, and the fill factor of the hybrid winding.

[0143] Furthermore, the topology building module is also used to: determine the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding based on the motor configuration parameters; determine the current of each conductor corresponding to the stator winding based on the current per phase and the number of parallel branches per phase; and determine the equivalent cross-sectional area of ​​the conductor based on the current of each conductor and the allowable current density.

[0144] Furthermore, the topology construction module is also used to: determine the total number of conductors in each slot and the number of slots per pole per phase corresponding to multiple stator slot regions based on slot region parameters; determine the total cross-sectional area of ​​conductors corresponding to multiple stator slot regions based on the total number of conductors in each slot and the minimum cross-sectional area of ​​conductors; determine the slot fill factor corresponding to multiple stator slot regions based on the total cross-sectional area of ​​conductors corresponding to multiple stator slot regions and the slot geometry area corresponding to the stator winding; and perform weighted fusion of the slot fill factors corresponding to multiple stator slot regions based on the number of slots per pole per phase corresponding to multiple stator slot regions to obtain the hybrid winding slot fill factor.

[0145] Furthermore, the topology building module is also used to: obtain the design requirements of the synchronous motor; determine the total number of slots corresponding to the stator winding based on the design requirements; determine the number of pole pairs and phases corresponding to the stator winding based on the motor configuration parameters; and determine the number of slots per pole and per phase based on the total number of slots, the number of pole pairs, and the number of phases.

[0146] Furthermore, the winding construction module is also used for: determining the reactance parameters corresponding to the winding topology based on motor configuration parameters and slot parameters of multiple stator slots, wherein the reactance parameters are used to reflect the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology; matching the reactance parameters with parameter indicators to obtain matching results; constructing the structure of the stator winding based on the winding topology in response to the matching of reactance parameters and parameter indicators; obtaining the indicator difference results in response to the mismatch between reactance parameters and parameter indicators, and adjusting the winding topology based on the indicator difference results to obtain a new winding topology, so as to re-execute the step of evaluating the winding topology based on motor configuration parameters and slot parameters of multiple stator slots to obtain parameter evaluation results, until the parameter evaluation results indicate that the winding topology does not need to be adjusted, and constructing the structure of the stator winding based on the winding topology, wherein the indicator difference results are used to characterize the difference between the reactance parameters and parameter indicators corresponding to the winding topology.

[0147] Furthermore, the reactance parameters include: the synchronous reactance and transient reactance corresponding to the stator winding; the winding construction module is also used to: determine the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity corresponding to the stator winding based on the motor configuration parameters and the slot parameters of multiple stator slots; determine the main magnetizing reactance corresponding to the stator winding based on the main magnetizing inductance and synchronous angular velocity, and determine the equivalent leakage reactance corresponding to the stator winding based on the stator leakage inductance and synchronous angular velocity; determine the synchronous reactance based on the main magnetizing reactance and equivalent leakage reactance; and determine the transient reactance based on the main magnetizing inductance and stator leakage inductance.

[0148] Furthermore, the winding construction module is also used to: determine the fundamental coefficients of multiple stator slot regions based on motor configuration parameters and slot parameters of multiple stator slot regions; perform weighted fusion of the fundamental coefficients of multiple stator slot regions based on the number of slots per pole and per phase corresponding to multiple stator slot regions to obtain the equivalent fundamental winding coefficients corresponding to the stator winding; determine the total number of turns per phase and air gap magnetic parameters corresponding to the stator winding based on motor configuration parameters; and determine the main magnetizing inductance based on the equivalent fundamental winding coefficients, the total number of turns per phase, and the air gap magnetic parameters.

[0149] Furthermore, the winding construction module is also used to: determine the slot structure parameters corresponding to the stator winding based on the motor configuration parameters; determine the equivalent leakage permeability corresponding to multiple stator slots based on the slot parameters of multiple stator slots; perform weighted fusion of the equivalent leakage permeability corresponding to multiple stator slots based on the number of slots per pole and per phase corresponding to multiple stator slots to obtain the equivalent leakage per pole and per phase corresponding to the stator winding; and determine the stator leakage inductance based on the slot structure parameters, the equivalent leakage per pole and per phase, and the leakage reactance correction coefficient.

[0150] Furthermore, the winding construction module is also used to: obtain the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding; determine the equivalent magnetic circuit inductance corresponding to the stator winding based on the main magnetizing inductance, the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding; determine the transient inductance corresponding to the stator winding based on the stator leakage inductance and the equivalent magnetic circuit inductance; and determine the transient reactance based on the transient inductance and the synchronous angular velocity.

[0151] Embodiments of this application also provide an electronic device, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention during runtime.

[0152] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0153] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0154] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of the present invention.

[0155] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of the present invention.

[0156] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0157] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0158] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0159] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0160] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0161] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for constructing a stator winding, characterized in that, include: Obtain the motor configuration parameters of the synchronous motor; Based on the motor configuration parameters, a winding topology for the stator winding in the synchronous motor is constructed. The winding topology is used to characterize the scheme of dividing the stator slots corresponding to the stator winding into multiple stator slot regions, and the configuration of the structure of the multiple stator slot regions. The number of conductor layers corresponding to the multiple stator slot regions is different. The structure of the stator winding is constructed based on the winding topology.

2. The method according to claim 1, characterized in that, Based on the motor configuration parameters, the winding topology of the stator winding in the synchronous motor is constructed, including: Based on the motor configuration parameters, determine the number of slots per pole and per phase and the equivalent cross-sectional area of ​​the conductors corresponding to the stator windings; Based on the number of slots per pole and per phase, the stator slots corresponding to the stator winding are divided to obtain the multiple stator slot regions; Based on the equivalent cross-sectional area of ​​the conductor and the slot parameters of the multiple stator slot regions, the fill factor of the hybrid winding corresponding to the stator winding is determined; The winding topology is constructed based on the slot parameters, the equivalent cross-sectional area of ​​the conductor, and the slot fill factor of the hybrid winding.

3. The method according to claim 2, characterized in that, Based on the motor configuration parameters, the equivalent cross-sectional area of ​​the conductors corresponding to the stator windings is determined, including: Based on the motor configuration parameters, determine the current per phase, the number of parallel branches per phase, and the allowable current density corresponding to the stator winding; Based on the current in each phase and the number of parallel branches in each phase, determine the current in each conductor corresponding to the stator winding; The equivalent cross-sectional area of ​​the conductor is determined based on the current in each conductor and the allowable current density.

4. The method according to claim 2, characterized in that, Based on the equivalent cross-sectional area of ​​the conductor and the slot parameters of the plurality of stator slot regions, the fill factor of the hybrid winding corresponding to the stator winding is determined, including: Based on the slot parameters, determine the total number of conductor roots in each slot and the number of slots per pole per phase corresponding to the plurality of stator slot regions; Based on the total number of conductors and the minimum cross-sectional area of ​​the conductors in each of the multiple stator slot regions, the total cross-sectional area of ​​the conductors corresponding to the multiple stator slot regions is determined; Based on the total cross-sectional area of ​​the conductors corresponding to the plurality of stator slot regions and the geometric area of ​​the slot body corresponding to the stator winding, the slot fill factor corresponding to the plurality of stator slot regions is determined; Based on the number of slots per pole per phase corresponding to the multiple stator slot regions, the slot fill factor corresponding to the multiple stator slot regions is weighted and fused to obtain the hybrid winding slot fill factor.

5. The method according to claim 2, characterized in that, Based on the motor configuration parameters, determining the number of slots per pole and per phase corresponding to the stator winding includes: Obtain the design requirements for the synchronous motor; Based on the design requirements, determine the total number of slots corresponding to the stator winding; Based on the motor configuration parameters, determine the number of pole pairs and the number of phases corresponding to the stator winding; The number of slots per pole per phase is determined based on the total number of slots, the number of pole pairs, and the number of phases.

6. The method according to any one of claims 1-5, characterized in that, The structure of the stator winding is constructed based on the winding topology, including: Based on the motor configuration parameters and the slot parameters of the multiple stator slots, the reactance parameters corresponding to the winding topology are determined, wherein the reactance parameters are used to reflect the steady-state reactive power output capability and instantaneous fault response speed of the stator winding under the winding topology. The reactance parameter is matched with the parameter index to obtain the matching result; In response to the matching of the reactance parameter with the parameter index, the structure of the stator winding is constructed based on the winding topology; In response to a mismatch between the reactance parameter and the parameter index, an index difference result is obtained, and the winding topology is adjusted based on the index difference result to obtain a new winding topology. The step of re-evaluating the winding topology based on the motor configuration parameters and the slot parameters of the multiple stator slots to obtain parameter evaluation results is then performed until the parameter evaluation result indicates that the winding topology does not require adjustment. Based on the winding topology, the structure of the stator winding is constructed, wherein the index difference result is used to characterize the difference between the reactance parameter and the parameter index corresponding to the winding topology.

7. The method according to claim 6, characterized in that, The reactance parameters include: the synchronous reactance and transient reactance corresponding to the stator winding; based on the motor configuration parameters and the slot parameters of the plurality of stator slots, the reactance parameters corresponding to the winding topology are determined, including: Based on the motor configuration parameters and the slot parameters of the multiple stator slots, the main magnetizing inductance, stator leakage inductance, and synchronous angular velocity corresponding to the stator winding are determined. Based on the main magnetizing inductance and the synchronous angular velocity, the main magnetizing reactance corresponding to the stator winding is determined, and based on the stator leakage inductance and the synchronous angular velocity, the equivalent leakage reactance corresponding to the stator winding is determined. The synchronization reactance is determined based on the main magnetization reactance and the equivalent leakage reactance; The transient reactance is determined based on the main magnetizing inductance and the stator leakage inductance.

8. The method according to claim 7, characterized in that, Based on the motor configuration parameters and the slot parameters of the plurality of stator slots, the main magnetizing inductance corresponding to the stator winding is determined, including: Based on the motor configuration parameters and the slot parameters of the plurality of stator slots, the fundamental frequency coefficients of the slots corresponding to the plurality of stator slots are determined; Based on the number of slots per pole per phase corresponding to the plurality of stator slot regions, the fundamental coefficients of the slot regions corresponding to the plurality of stator slot regions are weighted and fused to obtain the equivalent fundamental winding coefficients corresponding to the stator winding. Based on the motor configuration parameters, determine the total number of turns per phase and the air gap magnetic parameters corresponding to the stator winding; The main magnetizing inductance is determined based on the equivalent fundamental winding coefficient, the total number of turns per phase, and the air gap magnetic parameters.

9. The method according to claim 7, characterized in that, Based on the motor configuration parameters and the slot parameters of the plurality of stator slots, the stator leakage inductance corresponding to the stator winding is determined, including: Based on the motor configuration parameters, determine the slot structure parameters corresponding to the stator winding; Based on the slot parameters of the plurality of stator slot regions, the equivalent leakage permeability corresponding to the plurality of stator slot regions is determined; Based on the number of slots per pole per phase corresponding to the plurality of stator slot regions, the equivalent leakage magnetic conductance corresponding to the plurality of stator slot regions is weighted and fused to obtain the equivalent leakage magnetic conductance per pole per phase corresponding to the stator winding. The stator leakage inductance is determined based on the slot structure parameters, the equivalent leakage permeability per pole per phase, and the leakage reactance correction coefficient.

10. The method according to claim 7, characterized in that, Determining the transient reactance based on the main magnetizing inductance and the stator leakage inductance includes: Obtain the equivalent inductance of the excitation winding and the equivalent inductance of the damping winding corresponding to the stator winding; Based on the main magnetizing inductance, the equivalent inductance of the excitation winding, and the equivalent inductance of the damping winding, the equivalent magnetic circuit inductance corresponding to the stator winding is determined. Based on the stator leakage inductance and the equivalent magnetic circuit inductance, the transient inductance corresponding to the stator winding is determined; The transient reactance is determined based on the transient inductance and the synchronous angular velocity.

11. A device for constructing a stator winding, characterized in that, include: The parameter acquisition module is used to acquire the motor configuration parameters of the synchronous motor. The topology construction module is used to construct the winding topology of the stator winding in the synchronous motor based on the motor configuration parameters. The winding topology is used to characterize the scheme of dividing the stator slots corresponding to the stator winding into multiple stator slot regions, and the configuration scheme of the structure of the multiple stator slot regions. The number of conductor layers corresponding to the multiple stator slot regions is different. The winding construction module is used to construct the structure of the stator winding based on the winding topology.

12. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 10.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method according to any one of claims 1 to 10.

14. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 10.

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