Split type alternating current winding, magnetic flux pump and superconducting magnetic flux pump system

Abstract

The application belongs to the technical field of superconducting magnet excitation system, and relates to a split type AC winding, a magnetic flux pump and a superconducting magnetic flux pump system. The split type AC winding comprises an AC winding main body and a magnetic iron tooth; the AC winding main body comprises a main body iron tooth, one end of the magnetic iron tooth is connected with the main body iron tooth, and the other end of the magnetic iron tooth is gathered in the extension direction of the main body iron tooth. The magnetic flux pump comprises the split type AC winding, a DC winding and a magnetic yoke; there is an air gap between the magnetic iron tooth of the split type AC winding and the magnetic yoke. The application adopts the split type AC winding, overcomes the problem of tooth expansion deformation of the AC winding, reduces the winding difficulty; the ampere-turn number of the AC winding is improved by adjusting the width of the main body iron tooth, the output performance of the magnetic flux pump is improved; the alternating magnetic field is guided and gathered by the magnetic iron tooth, the output waveform of the magnetic flux pump is adjusted, and the output performance of the magnetic flux pump system is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of superconducting magnet excitation systems, and specifically relates to a split AC winding, a flux pump, and a superconducting flux pump system. Background Technology

[0002] Superconducting magnets are a crucial component of superconducting power applications. Compared to traditional permanent magnets and ordinary electromagnets, they are lighter, smaller, can generate stronger magnetic fields, and have extremely low losses. Due to their superior properties, superconducting magnets are used in numerous fields, including medicine, energy, and transportation. Currently, high-temperature superconducting magnets cannot operate in continuous current mode, limiting their further industrial applications. Flux pumps can enable quasi-continuous current mode operation of high-temperature superconducting magnets through contactless power supply, while simultaneously isolating the thermal connection between cryogenic and non-cryoconducting environments, thus effectively promoting the application of high-temperature superconducting magnets.

[0003] In the past, during the winding process of the AC winding in integrated flux pump design, the iron teeth of the AC winding were relatively thin and lacked rigidity, making them prone to tooth expansion and deformation. In order to shorten the output wavelength of the flux pump, the width of the tooth groove needed to be reduced, which greatly increased the difficulty of machining and coil winding.

[0004] Because the narrow width of the slots in the AC winding limits the number of turns per slot, the excitation current is insufficient. In the solution of patent number CN113257519B, the length of the AC winding teeth is increased to increase the number of turns. However, due to the large length of the AC winding teeth, the lateral stiffness of the teeth is insufficient. The lateral pressure during coil winding causes the teeth to expand outwards, resulting in tooth bulging. This degrades the performance of the flux pump and affects its output performance.

[0005] In addition, due to the small tooth width and the large side height of the AC winding iron teeth, the AC winding must be wound with thinner metal wire, which increases the difficulty of winding and requires a lot of time. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a split-type AC winding, a flux pump, and a superconducting flux pump system.

[0007] In a first aspect, the present invention provides a split-type AC winding, comprising:

[0008] AC winding body and several magnetic teeth;

[0009] The AC winding body includes:

[0010] A plurality of main iron teeth, with grooves for winding coils between adjacent main iron teeth; and

[0011] AC winding;

[0012] One end of the magnetic tooth is connected to the main iron tooth, and the other end of the magnetic tooth converges in the extension direction of the main iron tooth.

[0013] Secondly, the present invention provides a flux pump based on a split-type AC winding, comprising:

[0014] Split-type AC winding;

[0015] DC winding; and

[0016] Magnetic yoke;

[0017] The magnetic teeth of the split AC winding extend toward the yoke and converge, and there is an air gap between the magnetic teeth and the yoke;

[0018] The split AC winding, DC winding, magnetic yoke, and magnetic guide teeth together constitute the magnetic circuit of the flux pump in operation.

[0019] Thirdly, the present invention provides a superconducting flux pump system based on a split-type AC winding, comprising:

[0020] Flux pump based on split AC winding;

[0021] Superconducting stator; and

[0022] Superconducting load;

[0023] The superconducting stator is disposed in the air gap between the magnetic teeth and the yoke; the superconducting load is connected to the superconducting stator to form a closed loop.

[0024] The beneficial effects of this invention are as follows: This invention adopts a split-type AC winding structure, which effectively overcomes the problem of expansion and deformation of the AC winding iron teeth, greatly reduces the difficulty of coil winding, and improves the efficiency of coil winding; at the same time, by increasing the width of the AC winding slot, it is beneficial to increase the ampere-turns of the AC winding, thereby significantly improving the current output performance of the flux pump; in addition, by using a magnetic guide to guide and concentrate the alternating magnetic field generated by the split-type AC winding between the main iron teeth and the AC winding, it is beneficial to enhance the magnetic field strength output by the flux pump, and the output waveform of the flux pump system can be adjusted by adjusting the width of the main iron teeth in the split-type AC winding, thereby improving the output performance of the flux pump and the flux pump system.

[0025] Based on the above technical solution, the present invention can be further improved as follows.

[0026] Preferably, the connection between the main iron tooth and the magnetic tooth is a tenon joint, laser welding, or pin connection.

[0027] Preferably, the end faces of the magnetic guide teeth and the main body iron teeth that are connected and assembled have the same shape and size.

[0028] Preferably, the magnetic tooth is a single-segment structure or a two-segment structure; when the magnetic tooth is a single-segment structure, the cross-sectional area of ​​the end of the magnetic tooth near the magnetic tooth is the same as the cross-sectional area of ​​the main iron tooth, and the cross-sectional area of ​​the magnetic tooth gradually decreases from the end of the magnetic tooth near the main iron tooth; when the magnetic tooth is a two-segment structure, the magnetic tooth includes a first iron tooth segment and a second iron tooth segment; the cross-sectional area of ​​the end of the first iron tooth segment near the main iron tooth is the same as the end of the main iron tooth; the cross-sectional area of ​​the second iron tooth segment gradually decreases from the end of the second magnetic tooth segment near the first iron tooth segment.

[0029] Preferably, the DC winding is disposed at one or both ends of the split AC winding;

[0030] When the DC winding is provided at one end of the split AC winding, one end of the magnetic yoke is connected to the DC winding, and the other end of the magnetic yoke extends to the end of the split AC winding away from the DC winding.

[0031] When the DC windings are provided at both ends of the split AC winding, one end of the magnetic yoke is connected to the DC winding located at one end of the split AC winding, and the other end of the magnetic yoke is connected to the DC winding located at the other end of the split AC winding, forming a magnetic circuit in the working state of the flux pump. The number of magnetic yokes is the same as the number of magnetic circuits; the number of DC windings at both ends of the split AC winding is the same.

[0032] Preferably, the superconducting load is a high-temperature superconducting coil or a superconducting closed wire.

[0033] Preferably, the superconducting load has a pair of input terminals and output terminals; the two ends of the stator assembly are respectively connected to the input terminals and the output terminals to form a closed loop. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a split-type AC winding in an embodiment of the present invention;

[0035] Figure 2 for Figure 1 Top view;

[0036] Figure 3 This is a schematic diagram of the structure of a magnetic tooth according to an optional embodiment of the present invention;

[0037] Figure 4 for Figure 3 Top view;

[0038] Figure 5 This is a schematic diagram of the structure of a magnetic tooth according to an optional embodiment of the present invention;

[0039] Figure 6 for Figure 5 Top view;

[0040] Figure 7 This is a schematic diagram of the structure of a flux pump based on a split AC winding and a single-sided DC winding in an embodiment of the present invention;

[0041] Figure 8 for Figure 7 Top view;

[0042] Figure 9 This is a schematic diagram of the structure of a flux pump based on a split AC winding and a double-sided DC winding in an embodiment of the present invention;

[0043] Figure 10 for Figure 9 Top view;

[0044] Figure 11 This is a schematic diagram of the structure of a flux pump based on a split AC winding and a double-sided DC winding in an embodiment of the present invention;

[0045] Figure 12 for Figure 11 Top view;

[0046] Figure 13 This is a schematic diagram of the structure of a superconducting flux pump system with a single-sided DC winding in an embodiment of the present invention;

[0047] Figure 14 This is a schematic diagram of the structure of the superconducting flux pump system with double-sided DC windings in an embodiment of the present invention;

[0048] Figure 15 A schematic diagram of the system structure of a dual-superconducting stator with double-sided DC winding superconducting flux pump excitation in an embodiment of the present invention;

[0049] Figure 16 This is a schematic diagram of the superconducting stator mounting method in an embodiment of the present invention;

[0050] Icons: 1-Split AC winding; 101-Main iron teeth; 102-AC winding; 103-Groove; 104-Magnetic teeth; 2, 201, 202, 203, 204-DC winding; 3, 301, 302-Yoke; 4, 401, 402-Superconducting stator; 5-Superconducting load; L-Cuboid structure; P-Magnetic sheet; S, S1, S2-Air gap. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Example 1

[0053] As attached Figure 1 As shown, a split-type AC winding includes:

[0054] AC winding body and several magnetic teeth 104;

[0055] The main body of the AC winding includes:

[0056] A plurality of main iron teeth 101, with grooves 103 for winding coils between the main iron teeth 101; and

[0057] AC winding 102;

[0058] One end of the magnetic tooth 104 is connected to the main iron tooth 101, and the other end of the magnetic tooth 104 converges in the extending direction of the main iron tooth 101. (See attached image) Figure 2 This is a top view of a split-type AC winding.

[0059] As an optional implementation, the connection between the main iron tooth 101 and the magnetic tooth 104 can be a tenon joint, laser welding, or pin connection, etc.

[0060] As an optional implementation, after one end of the magnetic tooth 104 is gathered in the extension direction of the main iron tooth 101, the magnetic tooth 104 is close to the end of the magnetic yoke 3, and the spacing between adjacent magnetic teeth 104 is equal.

[0061] As an optional embodiment, the mating surfaces of the magnetic teeth and the main body iron teeth are identical in shape and size. (See attached diagram) Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 The schematic diagram shows the structure of the magnetic teeth. The magnetic teeth extend towards the yoke, reducing their cross-sectional size and the spacing between them. (See attached diagram) Figure 3 and attached Figure 4In one optional implementation, the magnetic tooth comprises two sections. The first section is a cuboid structure L that engages with the main iron tooth 101. The cuboid structure L has the same size as the engagement surface of the main iron tooth 101. The other section comprises multiple magnetic plates P converging towards the central magnetic plate P, with the ends of the multiple magnetic plates P near the yoke 3 on the same plane. Figure 4 It is attached Figure 3 A top view. (See attached image.) Figure 5 In another optional implementation, the magnetic tooth includes a structure comprising only multiple magnetic sheets P. The cross-section of one end of each magnetic sheet P is the same size as the cross-section of the main iron tooth 101. The multiple magnetic sheets P converge towards the central magnetic sheet P, and the ends of the multiple magnetic sheets P closest to the yoke are on the same plane. (See attached diagram) Figure 6 It is attached Figure 5 Top view.

[0062] In practical applications, increasing the width of the slot 103 increases the number of turns of the excitation coil in each slot 103, ensuring the excitation ampere-turns. This avoids the problem of tooth bulging in the iron teeth 101 caused by excessive height of the AC winding 102 designed to ensure the excitation ampere-turns in traditional methods, thereby enhancing the lateral stiffness of the AC winding iron teeth 101. The width of the main iron teeth 101 and the height of the AC winding can be standardized according to the excitation ampere-turns.

[0063] Example 2

[0064] A flux pump based on a split-type AC winding includes:

[0065] Split-type AC winding;

[0066] DC winding; and

[0067] Magnetic yoke;

[0068] The magnetic teeth of the split AC winding extend towards the yoke and converge, and there is an air gap between the magnetic teeth and the yoke.

[0069] Among them, the split AC winding, DC winding, magnetic yoke, and magnetic teeth together constitute the magnetic circuit in the working state of the flux pump.

[0070] Optionally, the magnetic tooth can be a single-segment structure or a two-segment structure. When the magnetic tooth is a single-segment structure, the cross-sectional area of ​​the end of the magnetic tooth closest to the magnetic tooth is the same as the cross-sectional area of ​​the main iron tooth, and the cross-sectional area of ​​the magnetic tooth gradually decreases from the end of the magnetic tooth closest to the main iron tooth. When the magnetic tooth is a two-segment structure, the magnetic tooth includes a first iron tooth and a second iron tooth. The cross-sectional area of ​​the end of the first iron tooth closest to the main iron tooth is the same as the end of the main iron tooth. The cross-sectional area of ​​the second iron tooth gradually decreases from the end of the second magnetic tooth closest to the first iron tooth.

[0071] Optionally, the DC winding is located at one or both ends of the split AC winding; when a DC winding is located at one end of the split AC winding, one end of the yoke is connected to the DC winding, and the other end of the yoke extends to the end of the split AC winding away from the DC winding; when DC windings are located at both ends of the split AC winding, one end of the yoke is connected to the DC winding located at one end of the split AC winding, and the other end of the yoke is connected to the DC winding located at the other end of the split AC winding, forming a magnetic circuit in the working state of the flux pump, and the number of yokes is the same as the number of magnetic circuits; the number of DC windings at both ends of the split AC winding is the same.

[0072] As an optional implementation method, as shown in the appendix Figure 7 As shown, the flux pump includes: a split AC winding 1, a DC winding 2, and a magnetic yoke 3; wherein one end of the split AC winding 1 is connected to the magnetic yoke 3 through the DC winding 2. (See attached diagram) Figure 8 This is a top view of the main body of the flux pump. There is an air gap S between the magnetic tooth 104 and the yoke 3.

[0073] As an optional implementation method, as shown in the appendix Figure 9 As shown, the flux pump includes: a split-type AC winding 1, two DC windings 201 and 202, and a magnetic yoke 3; wherein, one end of the split-type AC winding 1 is connected to one end of the magnetic yoke 3 through the DC winding 201, and the other end of the split-type AC winding 1 is connected to the other end of the magnetic yoke 3 through the DC winding 202. (See attached diagram) Figure 10 This is a top view of the flux pump, showing an air gap S between the magnetic tooth 104 and the yoke 3.

[0074] As an optional implementation method, as shown in the appendix Figure 11As shown, the flux pump includes: a split-type AC winding 1, four DC windings 201, 202, 203, and 204, and two magnetic yokes 301 and 302; wherein, one end of the split-type AC winding 1 is connected to one end of DC winding 201 and one end of DC winding 202; the other end of the split-type AC winding 1 is connected to one end of DC winding 203 and one end of DC winding 204; the other end of DC winding 201 is connected to the other end of DC winding 204 via magnetic yoke 301; the other end of DC winding 202 is connected to the other end of DC winding 203 via magnetic yoke 302. (Appendix) Figure 12 This is a top view of the flux pump. There is an air gap S1 between the magnetic teeth and the yoke 301, and an air gap S2 between the magnetic teeth and the yoke 302.

[0075] In practical applications, this split-type high-temperature superconducting flux pump uses a split-type AC winding 1, which has the advantages of Embodiment 1. The number of DC windings 2 and the number of yokes 3 are set according to the current output requirements in the actual application scenario. For example, in scenarios with high current output requirements, a flux pump with more DC windings 2 is selected, and in scenarios with low current output requirements, a flux pump with fewer DC windings 2 is selected.

[0076] In practical applications, the output waveform of the flux pump can be adjusted by changing the number and / or size of the split AC winding 1, DC winding 2, and the magnetic teeth 104. Specifically, the split AC winding 1 includes a main iron tooth 101 and an AC coil wound on the main iron tooth 101. During manufacturing, widening the width of each slot 103 on the split AC winding 1 helps reduce the coil winding height, greatly reducing the winding difficulty of the split AC winding 1, improving the coil winding efficiency, avoiding tooth expansion and deformation during AC winding 102 winding, and significantly increasing the probability of successful winding. The more magnetic teeth there are, the longer the traveling wave range of the air gap S, thus allowing the flux pump to be applied to different current requirements. For example, in applications requiring high current output, the number of slots needs to be increased to connect multiple superconducting loads in parallel to achieve high current output. This invention can be applied not only to linear motor type flux pumps but also to rotary permanent magnet type flux pumps.

[0077] To better utilize this embodiment, the number of magnetic teeth 104 is the same as the number of main iron teeth 101, and the cross-sectional area of ​​the end of the magnetic tooth 104 that connects to the main iron tooth 101 is larger than the cross-sectional area of ​​the end of the magnetic tooth 104 near the magnetic yoke 3. Each magnetic tooth 104 is connected to the corresponding main iron tooth 101, and the magnetic teeth 104 converge at the magnetic yoke 3 to form a complete magnetic circuit in the working state, thereby improving the current output characteristics of the flux pump.

[0078] The magnetic circuit can be made of iron, or other magnetically conductive metals such as cobalt, nickel, or silicon steel, or even a magnetically conductive alloy. In this embodiment, iron is used.

[0079] In this embodiment of the invention, by setting the magnetic guide teeth 104 on the main body of the flux pump, it is not necessary to increase the height of the split AC winding 102. Given a fixed size of the flux pump, the main body iron teeth 101 are connected to the magnetic guide teeth 104. By adjusting the dimensions of the tooth slots 103 and the magnetic guide teeth, the maximum ampere-turns of the split AC winding 1 can be adjusted. In practical applications, the main body of the flux pump can be standardized in design, and magnetic guide teeth of different specifications can be independently designed according to the different requirements of traveling waves in different application scenarios.

[0080] Example 3

[0081] A flux pump system based on a split-type AC winding includes:

[0082] Flux pump based on split AC winding;

[0083] Superconducting stator; and

[0084] Superconducting load;

[0085] The superconducting stator is located in the air gap between the magnetic teeth and the yoke; the superconducting load is connected to the superconducting stator in a closed loop.

[0086] In practical applications, this split-type high-temperature superconducting magnetic flux pump system has the advantages of the split-type AC winding in Example 1, and the magnetic flux pump has the advantages of the magnetic flux teeth in Example 2.

[0087] Therefore, based on Embodiments 1 and 2, this split-type high-temperature superconducting flux pump system also includes a superconducting stator and a superconducting load. The superconducting stator is disposed in the air gap, and the superconducting load is connected to the superconducting stator to form a closed loop. In practical applications, the flux pump of this split-type high-temperature superconducting flux pump system also has the optional implementation method shown in Embodiment 2.

[0088] As an optional embodiment, the superconducting load is a high-temperature superconducting coil or a superconducting closed wire.

[0089] As an optional embodiment, the superconducting stator uses a high-temperature superconducting tape, specifically a ReBCO tape, which is formed by stacking a Hastelloy layer, a ReBCO layer, and a buffer layer from bottom to top on the substrate. It needs to operate at a temperature below 90K, where Re is a rare earth element.

[0090] As an optional implementation, in a single-sided DC coil system, an additional... Figure 7The magnetic flux pump body shown in the figure has a superconducting stator 4 mounted at the center of the end of the magnetic tooth 104 near the yoke 3, as shown in the attached figure. Figure 13 As shown, the other end of the magnetic tooth 104 is connected and fixed to the main iron tooth 101; there is an air gap S between the magnetic tooth 104 and the magnetic yoke 3.

[0091] As an optional implementation, in a bilateral DC system, an additional... Figure 9 The flux pump shown has a superconducting stator 4 mounted at the center of the end of the magnetic tooth 104 near the yoke 3, as shown in the attached diagram. Figure 14 As shown, the other end of the magnetic tooth 104 is connected and fixed to the main iron tooth 101; there is an air gap S between the magnetic tooth 104 and the magnetic yoke 3.

[0092] As an optional implementation, in a bilateral DC system, an additional... Figure 11 The flux pump shown is attached. Figure 15 As shown, a superconducting stator 401 is mounted on the magnetic tooth 104 at the center of one end near the yoke 301, and the other end of the magnetic tooth 104 is connected and fixed to one side of the main iron tooth 101; there is an air gap S1 between the magnetic tooth 104 and the yoke 3, and the superconducting stator 401 is disposed in the air gap S1, with the superconducting load 501 connected to the superconducting stator 401 to form a closed loop. Another superconducting stator 402 is mounted on the center of another magnetic tooth 104 at the center of one end near the yoke 302, and one end of this magnetic tooth 104 is connected and fixed to the other side of the main iron tooth 101; there is an air gap S2 between this magnetic tooth 104 and the yoke 3, and the superconducting stator is disposed in the air gap S2, with the superconducting load 502 connected to the superconducting stator 402 to form a closed loop.

[0093] Optionally, the superconducting load has a pair of input and output terminals; the two ends of the superconducting stator are connected to the input and output terminals respectively to form a closed loop.

[0094] In the above optional implementation methods, as shown in the appendix Figure 16 As shown, there is an air gap S between the magnetic teeth 104 and the yoke 3, and the superconducting stator 4 is disposed in the air gap S. The beneficial effects of the present invention are as follows: The present invention adopts a split-type AC winding structure, which effectively overcomes the problem of tooth expansion and deformation of AC winding iron teeth, greatly reduces the difficulty of coil winding, and improves the efficiency of coil winding; at the same time, by increasing the width of the AC winding slot, it is beneficial to increase the ampere-turns of the AC winding, thereby greatly improving the current output performance of the flux pump; in addition, by using the magnetic guide to guide and concentrate the alternating magnetic field generated by the split AC winding between the main iron teeth and the AC winding, it is beneficial to enhance the magnetic field strength output by the flux pump, and the ampere-turns of the AC winding of the flux pump system can be adjusted by adjusting the width of the main iron teeth in the split AC winding, thereby improving the output performance of the flux pump and the flux pump system.

[0095] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A split-type AC winding, characterized in that, include: AC winding body and several magnetic teeth; The AC winding body includes: A plurality of main iron teeth, with slots for winding coils between adjacent main iron teeth; and an AC winding; One end of the magnetic tooth is connected to the main iron tooth, and the other end of the magnetic tooth converges in the extending direction of the main iron tooth. The magnetic tooth can be a single-segment structure or a two-segment structure. When the magnetic tooth is a single-segment structure, the cross-sectional area of ​​the end of the magnetic tooth closest to the magnetic tooth is the same as the cross-sectional area of ​​the main iron tooth, and the cross-sectional area of ​​the magnetic tooth gradually decreases from the end of the magnetic tooth closest to the main iron tooth. When the magnetic tooth is a two-segment structure, the magnetic tooth includes a first iron tooth and a second iron tooth. The cross-sectional area of ​​the end of the first iron tooth closest to the main iron tooth is the same as the end of the main iron tooth. The cross-sectional area of ​​the second iron tooth gradually decreases from the end of the second iron tooth closest to the first iron tooth.

2. The split-type AC winding according to claim 1, characterized in that, The connection between the main iron tooth and the magnetic tooth is a tenon joint, laser welding, or pin connection.

3. A split-type AC winding according to claim 1, characterized in that, The end faces of the magnetic teeth that are connected and assembled with the main iron teeth have the same shape and size.

4. A flux pump based on a split-type AC winding, characterized in that, include: A split-type AC winding as described in any one of claims 1-3; DC winding; as well as Magnetic yoke; The magnetic teeth of the split AC winding extend toward the yoke and converge, and there is an air gap between the magnetic teeth and the yoke; The split AC winding, DC winding, magnetic yoke, and magnetic guide teeth together constitute the magnetic circuit of the flux pump in operation.

5. A flux pump based on a split-type AC winding according to claim 4, characterized in that, The DC winding is disposed at one or both ends of the split AC winding; When the DC winding is provided at one end of the split AC winding, one end of the magnetic yoke is connected to the DC winding, and the other end of the magnetic yoke extends to the end of the split AC winding away from the DC winding. When the DC windings are provided at both ends of the split AC winding, one end of the magnetic yoke is connected to the DC winding located at one end of the split AC winding, and the other end of the magnetic yoke is connected to the DC winding located at the other end of the split AC winding, forming a magnetic circuit in the working state of the flux pump. The number of magnetic yokes is the same as the number of magnetic circuits; the number of DC windings at both ends of the split AC winding is the same.

6. A superconducting flux pump system based on a split-type AC winding, characterized in that, include: The flux pump based on a split AC winding as described in any one of claims 4 or 5; Superconducting stator; as well as Superconducting load; The superconducting stator is disposed in the air gap between the magnetic teeth and the yoke; the superconducting load is connected to the superconducting stator to form a closed loop.

7. The superconducting flux pump system based on a split AC winding according to claim 6, characterized in that, The superconducting load is a high-temperature superconducting coil.

8. The superconducting flux pump system based on a split AC winding according to claim 6, characterized in that, The superconducting load is a superconducting closed conductor.

9. A superconducting flux pump system based on a split-type AC winding according to claim 6, characterized in that, The superconducting load has a pair of input terminals and output terminals; the two ends of the superconducting stator are connected to the input terminals and output terminals respectively, forming a closed loop.

Images