A method and apparatus for obtaining electromagnetic parameters of a coil

Abstract

This application discloses a method and apparatus for obtaining coil electromagnetic parameters. The method includes: obtaining second-level parameters of a superconducting maglev train; the second-level parameters include the levitation force and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the traction force characteristics of the vehicle; determining third-level parameters of the superconducting maglev train based on the second-level parameters; the third-level parameters include the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, and the overcurrent and over-limit safety margin of the superconducting coil; and determining the coil electromagnetic parameters of the superconducting magnet based on the third-level parameters; the coil electromagnetic parameters include the coil operating current and the coil dimensions of the superconducting magnet. This application provides a modular design method for coil electromagnetic design, which facilitates continuous iteration and optimization between different parameter indicators.

Description

Technical Field

[0001] This application relates to the field of superconducting technology, and in particular to a method and apparatus for obtaining electromagnetic parameters of a coil. Background Technology

[0002] The onboard high-temperature superconducting magnet, as the core of the electric levitation train, generates forward traction force under the drive of the traveling wave magnetic field of the ground traction coil. When the vehicle reaches a certain speed, the superconducting magnet interacts with the levitation coil beside the track, enabling the train to overcome gravity and levitate above the track.

[0003] The core of coil electromagnetic design lies in rationally setting the coil's electromagnetic parameters while meeting the magnetomotive force requirements under different operating conditions. Coil parameters can include the number of turns and the operating current. The operating current must have sufficient safety margin while ensuring a reasonable number of turns. Currently, obtaining coil electromagnetic parameters largely relies on the designer's experience, lacking a modular design approach, resulting in lower accuracy and poor optimizability of the coil's electromagnetic parameters. Summary of the Invention

[0004] To address the aforementioned technical issues, this application provides a method and apparatus for obtaining coil electromagnetic parameters, offering a modular design approach for the electromagnetic design of coils in electric levitation vehicle-mounted high-temperature superconducting magnets.

[0005] To achieve the above objectives, the technical solutions provided in this application are as follows:

[0006] This application provides a method for obtaining coil electromagnetic parameters, including: obtaining second-level parameters of a superconducting maglev train; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the traction force characteristics of the vehicle; determining third-level parameters of the superconducting maglev train based on the second-level parameters; the third-level parameters include the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, and the overcurrent safety margin of the superconducting coil; determining the coil electromagnetic parameters of the superconducting magnet based on the third-level parameters; the coil electromagnetic parameters include the coil operating current and the coil dimensions of the superconducting magnet.

[0007] In some possible embodiments, it also includes:

[0008] Determine the first-level parameters of the superconducting maglev train; the first-level parameters include vehicle levitation force and guiding force, vehicle speed and acceleration, vehicle weight and vehicle three-dimensional dimensions;

[0009] The second-level parameters of the superconducting levitation train were obtained, including:

[0010] The second-level parameters of the superconducting levitation train are determined based on the first-level parameters.

[0011] In some possible embodiments, the electromagnetic parameters of the superconducting magnet coil are determined based on third-level parameters, including:

[0012] When the centerline dimensions of the superconducting magnetic pole, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole are matched with the maglev train, the electromagnetic parameters of the superconducting magnet's coil are determined based on the third-level parameters.

[0013] In some possible embodiments, the electromagnetic parameters of the superconducting magnet coil are determined based on third-level parameters, including:

[0014] When the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles do not match the magnetic levitation train, return to adjust the first level parameters.

[0015] In some possible embodiments, the electromagnetic parameters of the superconducting magnet coil are determined based on third-level parameters, including:

[0016] The operating current of the coil is determined based on the overcurrent safety margin of the superconducting coil and the coil operating temperature.

[0017] Based on the operating current and the superconducting pole magnetomotive force, determine the product of the number of individual discs and the number of turns of each disc in the coil;

[0018] The coil size of the superconducting magnet is determined by the product of the centerline size of the superconducting coil, the number of individual discs, and the number of turns per disc.

[0019] In some possible embodiments, the electromagnetic parameters of the superconducting magnet also include at least one of the following: the quench resistance of the constant current switch, the equivalent inter-turn resistivity of the superconducting coil, the spacing between the coil discs, the thickness of the superconducting tape, and the number of coil discs per superconducting coil.

[0020] Based on the above-described method for obtaining coil electromagnetic parameters, this application also provides a device for obtaining coil electromagnetic parameters, comprising:

[0021] The module is used to obtain the second-level parameters of the superconducting levitation train; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the vehicle traction force characteristics.

[0022] The first determining module is used to determine the third-level parameters of the superconducting maglev train based on the second-level parameters. The third-level parameters include the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, and the overcurrent safety margin of the superconducting coil.

[0023] The second determining module is used to determine the electromagnetic parameters of the superconducting magnet's coil based on the third-level parameters; the electromagnetic parameters of the coil include the coil's operating current and the coil size of the superconducting magnet.

[0024] In some possible embodiments, it also includes:

[0025] The third determining module is used to determine the first-level parameters of the superconducting maglev train; the first-level parameters include vehicle levitation force and guiding force, vehicle speed and acceleration, vehicle weight and vehicle three-dimensional dimensions.

[0026] The acquisition module is specifically used to determine the second-level parameters of the superconducting levitation train based on the first-level parameters.

[0027] In some possible embodiments, the second determining module is specifically used for:

[0028] When the centerline dimensions of the superconducting magnetic pole, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole are matched with the maglev train, the electromagnetic parameters of the superconducting magnet's coil are determined based on the third-level parameters.

[0029] In some possible embodiments, the second determining module is specifically used for:

[0030] When the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles do not match the magnetic levitation train, return to adjust the first level parameters.

[0031] As can be seen from the above technical solution, this application has the following beneficial effects:

[0032] This application provides a method for obtaining coil electromagnetic parameters, including: obtaining second-level parameters of a superconducting maglev train; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the traction force characteristics of the vehicle; determining third-level parameters of the superconducting maglev train based on the second-level parameters; the third-level parameters include the centerline dimensions of the superconducting magnetic poles, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, and the overcurrent safety margin of the superconducting coil; determining the coil electromagnetic parameters of the superconducting magnet based on the third-level parameters; the coil electromagnetic parameters include the coil operating current and the coil dimensions of the superconducting magnet.

[0033] Therefore, the coil electromagnetic parameter acquisition method provided in this application, by calculating the coil electromagnetic parameters of the superconducting maglev train in multiple levels, yields coil electromagnetic parameters with good accuracy and optimizability. Thus, the coil electromagnetic parameter acquisition method provided in this application offers a modular design approach for the coil electromagnetic design of electric levitation vehicle-mounted high-temperature superconducting magnets, facilitating continuous iteration and optimization of different parameter indices. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram illustrating a method for obtaining electromagnetic parameters of a coil provided in an embodiment of this application;

[0036] Figure 2 A schematic diagram illustrating another method for obtaining electromagnetic parameters of a coil provided in an embodiment of this application;

[0037] Figure 3 This is a schematic diagram of a coil electromagnetic parameter acquisition device provided in an embodiment of this application. Detailed Implementation

[0038] To help better understand the solutions provided in the embodiments of this application, before introducing the methods provided in the embodiments of this application, we will first introduce the application scenarios of the solutions in the embodiments of this application.

[0039] The onboard high-temperature superconducting magnet, as the core of the electric levitation train, generates forward traction force under the drive of the traveling wave magnetic field of the ground traction coil. When the vehicle reaches a certain speed, the superconducting magnet interacts with the levitation coil beside the track, enabling the train to overcome gravity and levitate above the track.

[0040] The core of coil electromagnetic design lies in rationally setting the coil's electromagnetic parameters while meeting the magnetomotive force requirements under different operating conditions. Coil parameters can include the number of turns and the operating current. The operating current must have sufficient safety margin while ensuring a reasonable number of turns. Currently, obtaining coil electromagnetic parameters largely relies on the designer's experience, lacking standardized and modular design methods, resulting in low accuracy and poor optimizability of the coil's electromagnetic parameters.

[0041] To address the aforementioned technical problems, this application provides a method for obtaining coil electromagnetic parameters, comprising: determining first-level parameters of a superconducting maglev train; the first-level parameters include vehicle levitation force and guiding force, vehicle speed and acceleration, vehicle weight and vehicle three-dimensional dimensions; determining second-level parameters of the superconducting maglev train based on the first-level parameters; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the vehicle traction force characteristics; determining the superconducting magnetic pole magnetomotive force of the superconducting maglev train based on the first-level parameters and the second-level parameters; determining the coil electromagnetic parameters of the superconducting magnet based on the superconducting magnetic pole magnetomotive force and the coil operating temperature; the coil electromagnetic parameters include operating current and the coil dimensions of the superconducting magnet.

[0042] Therefore, the coil electromagnetic parameter acquisition method provided in this application, by calculating the coil electromagnetic parameters of the superconducting maglev train in multiple levels, yields coil electromagnetic parameters with good accuracy and optimizability. Thus, the coil electromagnetic parameter acquisition method provided in this application offers a standardized and modular design method for the coil electromagnetic design of electric levitation vehicle-mounted high-temperature superconducting magnets, facilitating continuous iteration and optimization among different parameter indices.

[0043] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0044] See Figure 1 The figure is a schematic diagram of a method for obtaining electromagnetic parameters of a coil provided in an embodiment of this application.

[0045] like Figure 1 As shown, the method for obtaining electromagnetic parameters of a coil provided in this application includes:

[0046] S101: Obtain the second-level parameters of the superconducting levitation train; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the traction force characteristics of the vehicle.

[0047] It should be noted that the figure-eight coil is typically a coil laid on the track of a superconducting maglev train. The superconducting maglev train (vehicle) and the figure-eight coil generate levitation force and guiding force characteristics. Specifically, the levitation force characteristic indicates the mapping relationship between the levitation force of the superconducting maglev train and its speed, and the mapping relationship between the levitation force of the superconducting maglev train and the vertical downward sinking of the superconducting magnet relative to the figure-eight coil. The guiding force characteristic indicates the mapping relationship between the guiding force of the superconducting maglev train and its lateral offset. The vehicle traction force characteristic indicates the mapping relationship between the vehicle traction force and the weight, speed, and acceleration of the superconducting maglev train.

[0048] As one possible implementation, embodiments of this application may first determine the first-level parameters of the superconducting maglev train; the first-level parameters include vehicle levitation force and guiding force, vehicle speed and acceleration, vehicle weight and vehicle three-dimensional dimensions. Then, the second-level parameters of the superconducting maglev train are determined based on the first-level parameters.

[0049] It should be noted that the first-level parameters in this application embodiment are the required parameters for the superconducting maglev train, which can be determined by the vehicle's required conditions. For example, the vehicle's levitation force can be determined by the vehicle's weight, and the vehicle's guiding force can be determined by the vehicle's operating conditions. The three-dimensional dimensions of the vehicle in this application embodiment may include the length, width, and height of the superconducting maglev train, which are not limited in this application embodiment.

[0050] S102: Determine the third-level parameters of the superconducting maglev train based on the first-level parameters and the second-level parameters; the third-level parameters include the centerline dimensions of the superconducting magnetic poles in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, the overcurrent safety margin of the superconducting coil, and the longest excitation time.

[0051] In this embodiment of the application, the third level parameters of the superconducting magnetic levitation train can be determined based on the first level parameters and the second level parameters. The third level parameters include the centerline dimensions of the superconducting magnetic poles in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic poles, the pole pitch of the superconducting magnetic poles, the coil operating temperature, the superconducting properties of the superconducting material, the overcurrent safety margin of the superconducting coil, and the longest excitation time.

[0052] It should be noted that the coil centerline dimension can include the straight side length of the coil centerline and the radius of the circular arc of the coil centerline. The superconducting pole pitch refers to the center distance between two superconducting coils. Magnetomotive force generally refers to magnetomotive force. The magnetomotive force of a superconducting pole is a physical quantity in the magnetic circuit, equivalent to the electromotive force in a circuit. Magnetomotive force refers to the measure of the magnetic effect of the current in the coil. Magnetomotive force is measured in ampere-turns and depends on the number of turns in the coil. When designing the electromagnetic properties of the coil, system safety should be considered, and sufficient safety margin should be provided for the operating current. The overcurrent safety margin of a superconducting coil indicates the safety margin provided to prevent the superconductor from losing its superconducting properties and entering a normal state due to excessive rated current. The overcurrent safety margin of a superconducting coil can include safety margin A and safety margin B. Wherein, safety margin A = 1 - rated current / minimum value of the critical current distribution of the magnetic pole at rated current. Safety margin B = 1 - rated current / theoretical critical current of the magnetic pole. The longest excitation time indicates the longest excitation time required to energize a superconducting coil with an excitation power supply to reach its rated operating current. The superconducting properties of the superconducting material indicate its critical current.

[0053] S103: Determine the electromagnetic parameters of the superconducting magnet coil based on the third-level parameters; the electromagnetic parameters of the coil include the operating current and the coil size of the superconducting magnet.

[0054] In this embodiment, the operating current of the superconducting coil can be determined based on the overcurrent safety margin of the superconducting coil and the operating temperature of the coil; then, based on the operating current and the magnetomotive force of the superconducting pole, the product of the number of individual discs and the number of turns of each disc in the coil is determined; and the coil size of the superconducting magnet is determined based on the centerline size of the superconducting coil and the product of the number of individual discs and the number of turns of each disc.

[0055] It should be noted that the superconducting magnetomotive force (MMF) of the superconducting poles is equal to the operating current multiplied by the number of individual coils multiplied by the number of turns per coil. As one possible implementation, this application can optimize the coil dimensions of the superconducting magnet by minimizing the operating current while ensuring it remains within the safety margin, based on the MMF of the superconducting poles. Specifically, using finite element simulation analysis, a superconducting coil model is established based on the centerline dimensions. Under a specified operating temperature, through continuous iterative calculations, different sets of electromagnetic parameters can be obtained within the required safety margin, including the coil dimensions of the superconducting magnet, the number of individual coils, the number of turns per coil, and the operating current. Wherein, the thickness of an individual coil equals the strip width, the inner diameter of the coil's arc edge equals the radius of the arc edge of the coil's centerline - the number of turns per coil * the strip thickness / 2, and the inner diameter of the coil's arc edge equals the radius of the arc edge of the coil's centerline + the number of turns per coil * the strip thickness / 2.

[0056] It should be noted that, in this embodiment of the application, the rationality of the third-level parameters can also be judged based on the centerline dimensions of the superconducting magnetic pole in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole obtained in step S102. When the centerline dimensions of the superconducting magnetic pole in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole match the superconducting maglev train, the electromagnetic parameters of the superconducting magnet coil are determined according to the third-level parameters. When the centerline dimensions of the superconducting magnetic pole in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole do not match the superconducting maglev train, the process returns to adjusting the first-level parameters.

[0057] It should be noted that the electromagnetic parameters of the superconducting magnet in the embodiments of this application may also include at least one of the following: the quench resistance of the constant current switch, the equivalent inter-turn resistivity of the superconducting coil, the spacing between the coil discs, the thickness of the superconducting tape, and the number of coil discs per superconducting coil.

[0058] like Figure 2 As shown, in this embodiment, the second-level parameters can be obtained based on the first-level parameters, and the third-level parameters can be obtained from the second-level parameters. When the third-level parameters do not meet the preset conditions (the centerline dimension of the superconducting magnetic pole in three dimensions, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the matching of the superconducting magnetic pole pitch with the superconducting maglev train), the first-level parameters can be adjusted. When the third-level parameters meet the preset conditions, the fourth-level parameters can be obtained based on the third-level parameters. It should be noted that... Figure 2 The specific parameters included in each level are merely examples and do not limit the embodiments of this application.

[0059] In summary, the coil electromagnetic parameter acquisition method provided in this application calculates the coil electromagnetic parameters of the superconducting maglev train by dividing them into multiple levels, resulting in coil electromagnetic parameters with good accuracy and optimizability. Thus, the coil electromagnetic parameter acquisition method provided in this application offers a standardized and modular design approach for the coil electromagnetic design of electric levitation vehicle-mounted high-temperature superconducting magnets, facilitating continuous iteration and optimization among different parameter indices.

[0060] Based on the above-described method for obtaining coil electromagnetic parameters, this application also provides a device for obtaining coil electromagnetic parameters.

[0061] See Figure 3 The figure is a schematic diagram of a coil electromagnetic parameter acquisition device provided in an embodiment of this application.

[0062] like Figure 3 As shown in the figure, an embodiment of this application provides a coil electromagnetic parameter acquisition device, comprising:

[0063] Module 100 is used to obtain the second-level parameters of the superconducting levitation train; the second-level parameters include the levitation force characteristics and guiding force characteristics generated by the vehicle and the figure-eight coil, the drag characteristics generated by the vehicle and the figure-eight coil, and the traction force characteristics of the vehicle.

[0064] The first determining module 200 is used to determine the third-level parameters of the superconducting magnetic levitation train based on the second-level parameters. The third-level parameters include the centerline size of the superconducting magnetic pole, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, the pole pitch of the superconducting magnetic pole, the coil operating temperature, and the overcurrent safety margin of the superconducting coil.

[0065] The second determining module 300 is used to determine the electromagnetic parameters of the superconducting magnet coil based on the third-level parameters; the electromagnetic parameters of the coil include the operating current of the coil and the coil size of the superconducting magnet.

[0066] As one possible implementation, the coil electromagnetic parameter acquisition device provided in this application embodiment further includes: a third determining module, used to determine the first-level parameters of the superconducting magnetic levitation train; the first-level parameters include vehicle levitation force and guiding force, vehicle speed and acceleration, vehicle weight and vehicle three-dimensional dimensions; and an acquisition module, specifically used to determine the second-level parameters of the superconducting levitation train based on the first-level parameters.

[0067] As one possible implementation, the second determining module is specifically used to: determine the coil electromagnetic parameters of the superconducting magnet based on the third-level parameters when the centerline size of the superconducting magnetic pole, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole are matched with the maglev train.

[0068] As one possible implementation, the second determining module is specifically used to: return to adjust the first level parameters when the centerline size of the superconducting magnetic pole, the distance between the centerline and the figure-eight coil, the distance between the centerline and the stator coil of the linear motor, the magnetomotive force of the superconducting magnetic pole, the pole pitch of the superconducting magnetic pole, and the magnetic levitation train are mismatched.

[0069] In summary, the coil electromagnetic parameter acquisition device provided in this application calculates the coil electromagnetic parameters of the superconducting maglev train by dividing them into multiple levels, resulting in coil electromagnetic parameters with good accuracy and optimizability. Thus, this application provides a standardized and modular design device for the coil electromagnetic design of electric levitation vehicle-mounted high-temperature superconducting magnets, facilitating continuous iteration and optimization of different parameter indicators.

[0070] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0071] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Regarding the methods disclosed in the embodiments, since they correspond to the systems disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the system section description.

[0072] It should also be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] The above description of the disclosed embodiments will enable those skilled in the art to make or use various modifications to these embodiments. It will be readily apparent to those skilled in the art that the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of obtaining electromagnetic parameters of a coil, characterized by, comprising: obtaining second level parameters of the superconducting levitation train; the second level parameters comprising characteristics of levitation force and guiding force generated by the vehicle and the 8-shaped coil, characteristics of drag generated by the vehicle and the 8-shaped coil, and characteristics of traction force of the vehicle; determining third level parameters of the superconducting magnetic levitation train according to the second level parameters; the third level parameters comprising a center line size of the superconducting magnetic pole, a distance between the center line and the 8-shaped coil, a distance between the center line and a stator coil of the linear motor, a magnetic motive force of the superconducting magnetic pole, a pole pitch of the superconducting magnetic pole, a working temperature of the coil, and a superconducting coil overcurrent loss safety margin; determining coil electromagnetic parameters of the superconducting magnet according to the third level parameters; the coil electromagnetic parameters comprising an operating current of the coil and a coil size of the superconducting magnet.

2. The method of claim 1, wherein, Further comprising: determining first level parameters of the superconducting magnetic levitation train; the first level parameters comprising levitation force and guiding force of the vehicle, speed and acceleration of the vehicle, weight of the vehicle, and three-dimensional size of the vehicle; the obtaining second level parameters of the superconducting levitation train, comprising: determining second level parameters of the superconducting levitation train according to the first level parameters.

3. The method of claim 1, wherein, the determining third level parameters of the superconducting magnetic levitation train according to the third level parameters, comprising: when the center line size of the superconducting magnetic pole, the distance between the center line and the 8-shaped coil, the distance between the center line and the stator coil of the linear motor, the magnetic motive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole match the magnetic levitation train, determining the coil electromagnetic parameters of the superconducting magnet according to the third level parameters.

4. The method of claim 2, wherein, the determining third level parameters of the superconducting magnetic levitation train according to the third level parameters, comprising: when the center line size of the superconducting magnetic pole, the distance between the center line and the 8-shaped coil, the distance between the center line and the stator coil of the linear motor, the magnetic motive force of the superconducting magnetic pole, and the pole pitch of the superconducting magnetic pole do not match the magnetic levitation train, returning to adjust the first level parameters.

5. The method of claim 1, wherein, the determining third level parameters of the superconducting magnetic levitation train according to the third level parameters, comprising: determining the operating current of the coil according to the superconducting coil overcurrent loss safety margin and the working temperature of the coil; determining a product of a single-pie number and a single-pie turn number in the coil according to the operating current and the magnetic motive force of the superconducting magnetic pole; determining the coil size of the superconducting magnet according to the center line size of the superconducting coil and the product of the single-pie number and the single-pie turn number.

6. The method of claim 1, wherein, The electromagnetic parameters of the superconducting magnet further comprise at least one of a quench resistance of a constant current switch, an equivalent inter-turn resistivity of the superconducting coil, a distance between the coils, a thickness of the superconducting tape, and a single-pie number of the superconducting coil.

7. A coil electromagnetic parameter obtaining apparatus characterized by comprising: comprising: an obtaining module, configured to obtain second level parameters of the superconducting levitation train; the second level parameters comprising characteristics of levitation force and guiding force generated by the vehicle and the 8-shaped coil, characteristics of drag generated by the vehicle and the 8-shaped coil, and characteristics of traction force of the vehicle; a first determining module, configured to determine third level parameters of the superconducting magnetic levitation train according to the second level parameters; the third level parameters comprising a center line size of the superconducting magnetic pole, a distance between the center line and the 8-shaped coil, a distance between the center line and a stator coil of the linear motor, a magnetic motive force of the superconducting magnetic pole, a pole pitch of the superconducting magnetic pole, a working temperature of the coil, and a superconducting coil overcurrent loss safety margin; The second determining module is configured to determine a coil electromagnetic parameter of the superconducting magnet according to the third-level parameter; the coil electromagnetic parameter comprises an operating current of the coil and a coil size of the superconducting magnet.

8. The apparatus of claim 7, wherein, Further comprising: The third determining module is configured to determine a first-level parameter of the superconducting maglev train; the first-level parameter comprises a vehicle levitation force and a guiding power, a vehicle speed and an acceleration, a vehicle weight and a three-dimensional size of the vehicle. The obtaining module is specifically configured to determine a second-level parameter of the superconducting maglev train according to the first-level parameter.

9. The apparatus of claim 7, wherein, The second determining module is specifically configured to: When the center line size of the superconducting magnetic pole, the interval between the center line and the 8-shaped coil, the interval between the center line and the linear motor stator coil, the magnetic motive force of the superconducting magnetic pole and the pole pitch of the superconducting magnetic pole are matched with the maglev train, the coil electromagnetic parameter of the superconducting magnet is determined according to the third-level parameter.

10. The apparatus of claim 8, wherein, The second determining module is specifically configured to: When the center line size of the superconducting magnetic pole, the interval between the center line and the 8-shaped coil, the interval between the center line and the linear motor stator coil, the magnetic motive force of the superconducting magnetic pole and the pole pitch of the superconducting magnetic pole are not matched with the maglev train, the first-level parameter is adjusted.

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