A magnetic levitation high-inertia integrated synchronous condenser device

Abstract

The present invention discloses a magnetic levitation high-inertia integrated synchronous condenser device, which comprises a machine body. A rotating shaft is installed inside the machine body. A flywheel and a synchronous condenser assembly are arranged side by side in the middle of the rotating shaft. At least one radial magnetic bearing assembly connected to the machine body is installed on both sides of the rotating shaft where the flywheel and the synchronous condenser assembly are located. Axial thrust positioning magnetic bearing assemblies are also installed at both ends of the rotating shaft inside the machine body. A slip ring assembly is installed on the rotating shaft. By controlling the electromagnetic forces of the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies, the high-speed rotation of the rotating shaft is levitated and supported. The flywheel and the synchronous condenser assembly are integrated together, and the split installation structure is abandoned. There is no need to set a coupling and an auxiliary system. By installing the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies, the rotating shaft can be levitated and supported, without mechanical contact and friction loss, greatly simplifying the complexity of the system and having a relatively low operation and maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of motors and electrical appliances, and particularly to a magnetically levitated high-inertia integrated synchronous condenser device. Background Art

[0002] With the substantial increase in the proportion of new energy in the new power system, the trend of power system electrification is becoming increasingly serious. The voltage support, inertia support, and frequency regulation ability of the power system continue to weaken, seriously threatening the safe and stable operation of the power system. Therefore, the "Power System Safety and Stability Guidelines" GB 38755-2019 requires that new energy power stations should provide a certain short-circuit capacity and inertia support to the system; at the same time, it requires that new energy power stations should improve their regulation ability and, if necessary, configure regulating resources such as gas power stations, pumped-storage power stations, energy storage power stations, etc., as well as dynamic reactive power regulating equipment such as synchronous condensers, static synchronous compensators, and static var compensators.

[0003] For distributed synchronous condensers applied in new energy power stations, especially high-inertia synchronous condensers, they have become key equipment to ensure the sustainable development of new energy.

[0004] Existing high-inertia synchronous condenser devices generally include a synchronous condenser, a gear set device, and a flywheel energy storage device, such as CN113708413A. Among them, the synchronous condenser and the flywheel device are connected by a coupling. The synchronous condenser and the flywheel device each include a set of high-speed sliding bearing devices and their auxiliary lubrication and cooling devices. Currently, they are all split structures, which are difficult to install and debug on-site, require regular detection and adjustment of coaxiality, have a relatively high usage cost, occupy a relatively large area, and the existing mechanical bearings and auxiliary systems have complex structures and generate a large amount of heat, requiring a separate heat dissipation system to be set up. Summary of the Invention

[0005] The present invention provides a magnetically levitated high-inertia integrated synchronous condenser device, which can solve the problems of high usage cost, complex structure, and the need for a separate heat dissipation system caused by the split structure of the existing high-inertia synchronous condenser device.

[0006] To achieve the above object, the present invention provides the following technical solution: A magnetic levitation high-inertia integrated synchronous condenser device, including a body, a rotating shaft is installed inside the body, a flywheel and a synchronous condenser assembly are arranged side by side in the middle of the rotating shaft, and at least one radial magnetic bearing assembly connected to the body is installed on both sides of the rotating shaft where the flywheel and the synchronous condenser assembly are located. Axial thrust positioning magnetic bearing assemblies are also installed at both ends of the rotating shaft inside the body. A slip ring assembly is installed on the rotating shaft. By controlling the electromagnetic forces of the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies, the high-speed rotation of the rotating shaft is levitated and supported. The flywheel and the synchronous condenser assembly are integrated together, abandoning the split installation structure, occupying less space, and eliminating the need to set up couplings and auxiliary systems. By installing the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies, the high-speed rotation of the rotating shaft can be levitated and supported, without mechanical contact, friction loss, and lubrication required, greatly simplifying the complexity of the system and having a relatively low operation and maintenance cost.

[0007] Preferably, the radial magnetic bearing assembly includes a radial magnetic bearing rotor core installed on the rotating shaft and a stator magnetic circuit ring axially installed on the inner side of the body. A radial magnetic bearing stator core is installed on the radial inner side of the stator magnetic circuit ring. Radial magnetic bearing stator windings are arranged on the radial magnetic bearing stator core. The stator magnetic circuit ring and the radial magnetic bearing stator core are evenly divided into an upper half and a lower half by two magnetic pole isolation blocks. A permanent magnet ring is installed between the upper half of the stator magnetic circuit rings, and a stator magnetic circuit intermediate ring is installed between the lower half of the stator magnetic circuit rings. The stator magnetic circuit intermediate ring and the permanent magnet ring are separated by the magnetic pole isolation blocks. Adopting the magnetic circuit setting method with the permanent magnet ring and the stator magnetic circuit intermediate ring arranged vertically, the stator magnetic circuit intermediate ring needs to be powered separately to generate electromagnetic force, while the permanent magnet ring can generate electromagnetic force without power supply. The electromagnetic force generated by the permanent magnet ring can offset part of the weight of the rotating shaft, which is equivalent to reducing the weight of the rotor. Since the permanent magnet part does not require power control, the power capacity of the electromagnetic bearing can be effectively reduced.

[0008] Preferably, a number of tooth-shaped structures are evenly distributed on the radial inner side of the radial magnetic bearing stator core, and the radial magnetic bearing stator windings are wound on the tooth-shaped structures, which can improve the electromagnetic force generated by the radial magnetic bearing stator core.

[0009] Preferably, a radial bearing seat is installed on the body, and the radial magnetic bearing assembly is installed on the radial bearing seat. Both the radial bearing seat and the magnetic pole isolation blocks are made of non-magnetic materials. The radial bearing seat can be installed as a separate part with the body, which is convenient for installation, and the materials of the radial bearing seat and the body can be different.

[0010] Preferably, the axial thrust positioning magnetic bearing assembly includes an axial thrust positioning magnetic bearing stator core mounted on the machine body and an axial thrust positioning magnetic bearing coil mounted on the axial thrust positioning magnetic bearing stator core. An axial thrust positioning magnetic bearing rotor core is mounted on the rotating shaft at a position opposite to the axial thrust positioning magnetic bearing stator core. The axial electromagnetic thrust can be generated by the axial thrust positioning magnetic bearing coil to axially limit the rotating shaft rotating at high speed. The structure is simple and the installation is convenient.

[0011] Preferably, the synchronous condenser assembly includes a synchronous condenser stator core mounted on the machine body and a synchronous condenser stator winding wound around the synchronous condenser stator core. A synchronous condenser rotor core and a synchronous condenser rotor excitation winding are mounted on the rotating shaft at a position corresponding to the synchronous condenser stator core. The synchronous condenser assembly is arranged by reasonably utilizing the limited space of the machine body and the rotating shaft, and the structure is compact.

[0012] Preferably, synchronous condenser rotor protection assemblies are arranged on both sides of the synchronous condenser rotor core and the synchronous condenser rotor excitation winding on the rotating shaft. The synchronous condenser rotor protection assemblies can axially position the synchronous condenser assembly and can also axially protect the synchronous condenser rotor core and the synchronous condenser rotor excitation winding.

[0013] Preferably, a radial sensor for sensing the radial position of the rotating shaft is installed inside the machine body. The radial sensor can monitor the radial position of the rotating shaft in real time, and the radial position of the rotating shaft can be automatically adjusted by controlling the electromagnetic force of the radial magnetic bearing assembly, so that the rotating shaft can maintain high-speed and stable rotation.

[0014] Preferably, an axial sensor for sensing the axial position of the rotating shaft is installed inside the machine body. The axial sensor can monitor the axial position of the rotating shaft, and the axial position of the rotating shaft can be automatically adjusted by controlling the electromagnetic force of the axial thrust positioning magnetic bearing assembly.

[0015] Preferably, auxiliary support bearings are installed between both ends of the rotating shaft and the machine body. The positions where both ends of the rotating shaft pass through the machine body can be supported by the auxiliary support bearings to prevent the rotating shaft from undergoing large deformations.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The flywheel and the synchronous condenser assembly are integrated together, and the split installation structure is abandoned. The occupied space is relatively small, and there is no need to set up a coupling and an auxiliary system. By installing the radial magnetic bearing assembly and the axial thrust positioning magnetic bearing assembly, the high-speed rotation of the rotating shaft can be suspended and supported. There is no mechanical contact, no friction loss, and no need for lubrication, which greatly simplifies the complexity of the system and the operation and maintenance cost is relatively low;

[0018] The radial magnetic bearing structure includes a radial magnetic bearing stator core, a radial magnetic bearing rotor core, a radial magnetic bearing stator winding, a permanent magnet, and a magnetic circuit ring. Through the permanent magnet electromagnetic force F of the upper part magnetic bearing PM cancels out the gravity G of the rotating shaft, reduces the power capacity of the magnetic bearing power supply, and adjusts the magnitude of the electromagnetic force by adjusting the magnitude of the current flowing into the radial magnetic bearing stator winding to achieve rotor suspension.

[0019] The axial thrust positioning magnetic bearing assembly includes an axial thrust positioning magnetic bearing stator core, an axial thrust positioning magnetic bearing coil, and an axial thrust positioning magnetic bearing rotor core. The structure is simple, and the magnitude of the electromagnetic force is adjusted by adjusting the magnitude of the current flowing into the axial thrust positioning magnetic bearing coil to achieve axial positioning of the rotor.

[0020] The synchronous condenser rotor is coaxially arranged with the flywheel to increase the moment of inertia of the rotor and achieve high-speed suspension of the rotor. Brief Description of the Drawings

[0021] Figure 1 is the front sectional view structure diagram of the present invention;

[0022] Figure 2 is the enlarged structure diagram of the synchronous condenser assembly of the present invention;

[0023] Figure 3 is the enlarged sectional view structure diagram of the radial magnetic bearing assembly of the present invention;

[0024] Figure 4 is Figure 3 the sectional view structure diagram in the A-A direction of

[0025] Figure 5 is Figure 3 the sectional view structure diagram in the B-B direction of

[0026] Figure 6 is the magnetic circuit schematic diagram of the radial magnetic bearing assembly of the present invention;

[0027] Figure 7 is the enlarged structure diagram of the axial thrust positioning magnetic bearing assembly of the present invention.

[0028] Reference Signs:

[0029] 1. Synchronous condenser assembly, 11. Stator core of synchronous condenser, 12. Stator winding of synchronous condenser, 13. Rotor core of synchronous condenser, 14. Rotor excitation winding of synchronous condenser, 15. Rotor protection assembly of synchronous condenser, 2. Radial magnetic bearing assembly, 21. Stator core of radial magnetic bearing, 22. Stator winding of radial magnetic bearing, 23. Rotor core of radial magnetic bearing, 24. Stator magnetic circuit ring, 25. Permanent magnet ring, 26. Intermediate ring of stator magnetic circuit, 27. Pole isolation block, 28. Radial bearing housing, 3. Axial thrust positioning magnetic bearing assembly, 31. Stator core of axial thrust positioning magnetic bearing, 32. Coil of axial thrust positioning magnetic bearing, 33. Rotor core of axial thrust positioning magnetic bearing, 4. Radial sensor, 5. Flywheel, 6. Slip ring assembly, 7. Axial sensor, 8. Rotating shaft, 9. Machine body, 10. Auxiliary support bearing. Detailed implementation mode

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] As Figure 1-7 shown, in order to solve the problems of high use cost, complex structure and the need for a separate heat dissipation system caused by the existing high-inertia synchronous condenser device mostly adopting a split structure, the present invention provides the following technical solutions: a magnetic levitation high-inertia integrated synchronous condenser device, including a machine body 9, a rotating shaft 8 is installed inside the machine body 9, a flywheel 5 and a synchronous condenser assembly 1 are arranged side by side in the middle of the rotating shaft 8, at least one radial magnetic bearing assembly 2 connected to the machine body 9 is installed on both sides of the rotating shaft 8 where the flywheel 5 and the synchronous condenser assembly 1 are located, an axial thrust positioning magnetic bearing assembly 3 is also installed at both ends of the rotating shaft 8 inside the machine body 9, and a slip ring assembly 6 is installed on the rotating shaft 8. By controlling the electromagnetic forces of the radial magnetic bearing assembly 2 and the axial thrust positioning magnetic bearing assembly 3, the high-speed rotation of the rotating shaft 8 is levitated and supported. The flywheel 5 and the synchronous condenser assembly 1 are integrated together, abandoning the split installation structure, occupying less space, without the need to set up a coupling and auxiliary system. By installing the radial magnetic bearing assembly 2 and the axial thrust positioning magnetic bearing assembly 3, the high-speed rotation of the rotating shaft 8 can be levitated and supported, without mechanical contact, without friction loss, without the need for lubrication, greatly simplifying the complexity of the system, and having a relatively low operation and maintenance cost.

[0032] Specifically, the machine body 9 encompasses the rotating shaft 8, the synchronous condenser assembly 1, and the flywheel 5, presenting an integrated appearance as a whole, that is, an integrated structure. Compared with the traditional structure where the synchronous condenser, the gear set device, and the energy storage flywheel are separate entities, the connection of the coupling is eliminated. Moreover, the synchronous condenser assembly 1 and the flywheel 5 are relatively close to each other, which can increase the moment of inertia of the rotating shaft 8 and make it more stable when the radial magnetic bearing assembly 2 and the axial thrust positioning magnetic bearing assembly 3 suspend and support the rotating shaft 8. Among them, the number of the radial magnetic bearing assemblies 2 can be set according to the length of the rotating shaft 8. Multiple radial magnetic bearing assemblies 2 can be arranged side by side on either side of the flywheel 5 and the synchronous condenser assembly 1, and the multiple radial magnetic bearing assemblies 2 are controlled uniformly.

[0033] In this embodiment, the radial magnetic bearing assembly 2 includes a radial magnetic bearing rotor core 23 mounted on the rotating shaft 8 and a stator magnetic circuit ring 24 arranged side by side inside the machine body 9. A radial magnetic bearing stator core 21 is mounted on the inner side in the radial direction of the stator magnetic circuit ring 24. A radial magnetic bearing stator winding 22 is provided on the radial magnetic bearing stator core 21. The stator magnetic circuit ring 24 and the radial magnetic bearing stator core 21 are evenly divided into upper and lower halves by two magnetic pole isolation blocks 27. Among them, a permanent magnet ring 25 is installed between the upper half stator magnetic circuit rings 24, and a stator magnetic circuit intermediate ring 26 is installed between the lower half stator magnetic circuit rings 24. The stator magnetic circuit intermediate ring 26 and the permanent magnet ring 25 are separated by the magnetic pole isolation blocks 27. Among them, the radial magnetic bearing stator core 21, the radial magnetic bearing rotor core 23, the stator magnetic circuit ring 24, and the stator magnetic circuit intermediate ring 26 are all made of magnetic conductive materials.

[0034] The radial magnetic bearing stator magnetic circuit ring in this embodiment does not adopt an integrated structure but a split structure with upper and lower separations. Among them, the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 are arranged in a magnetic circuit setting mode with upper and lower arrangements. The stator magnetic circuit intermediate ring 26 needs to be powered separately to generate electromagnetic force, while the permanent magnet ring 25 can generate electromagnetic force without power supply. Both the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 are semi-circular and are separated by the magnetic pole isolation blocks 27. The central angles of the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 can be the same or different and can be adjusted according to needs. The weight of the rotating shaft of the magnetic levitation high-inertia synchronous condenser is about dozens of tons, and electromagnetic force of hundreds of thousands of N is required for support. Relying solely on electromagnetic bearings requires a relatively large power supply. Therefore, a "permanent magnet + electromagnetic" hybrid radial magnetic bearing structure is proposed in this embodiment. The permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 generate electromagnetic forces F PM and F EM . This bearing structure only assembles the permanent magnet ring 25 in the upper half part and does not assemble permanent magnets in the lower half part. The permanent magnet ring 25 generates the permanent magnet electromagnetic force F PMOpposite to the direction of the gravity G of the rotating shaft 8, the resultant force in the gravity direction is F b =G - F PM , which is equivalent to reducing the weight of the rotor. Since the permanent magnet part does not require power control, the power capacity of the electromagnetic bearing can be effectively reduced. Therefore, only the electromagnetic force of the middle ring 26 of the stator magnetic circuit needs to be controlled.

[0035] Specifically, as Figure 6 shown, the axial magnetic circuit structure formed by the radial magnetic bearings in this embodiment is divided into two paths: The first path: The upper magnetic bearing follows the stator magnetic circuit ring 24 → permanent magnet ring 25 → stator magnetic circuit ring 24 → radial magnetic bearing stator iron core 21 → radial magnetic bearing rotor iron core 23 → radial magnetic bearing stator iron core 21 → stator magnetic circuit ring 24; The second path: The lower magnetic bearing follows the stator magnetic circuit ring 24 → stator magnetic circuit middle ring 26 → stator magnetic circuit ring 24 → radial magnetic bearing stator iron core 21 → radial magnetic bearing rotor iron core 23 → radial magnetic bearing stator iron core 21 → stator magnetic circuit ring 24. The directions of the two axial magnetic circuits are opposite. The electromagnetic force F PM generated by the first path of the axial magnetic circuit is an attractive force that can lift the rotating shaft 8 upward, and the electromagnetic force F EM generated by the second path of the axial magnetic circuit is a repulsive force that also lifts the rotating shaft 8 upward, so that the suspension rotation of the rotating shaft 8 can be realized.

[0036] Among them, a number of tooth-like structures are evenly distributed on the radial inner side of the radial magnetic bearing stator iron core 21, and the radial magnetic bearing stator winding 22 is wound on the tooth-like structures, which can improve the electromagnetic force generated by the radial magnetic bearing stator iron core 21. The number of tooth-like structures can be 4 or 8, and can be adjusted according to needs.

[0037] As Figure 3 shown, a radial bearing seat 28 is installed on the machine body 9, the radial magnetic bearing assembly 2 is installed on the radial bearing seat 28, and both the radial bearing seat 28 and the magnetic pole isolation block 27 are made of non-magnetic materials. The radial bearing seat 28 can be installed with the machine body 9 as a separate part, which is convenient for installation, and the materials of the radial bearing seat 28 and the machine body 9 can be made different.

[0038] As Figure 7As shown in the figure, the axial thrust positioning magnetic bearing assembly 3 includes an axial thrust positioning magnetic bearing stator core 31 mounted on the machine body 9 and an axial thrust positioning magnetic bearing coil 32 mounted on the axial thrust positioning magnetic bearing stator core 31. An axial thrust positioning magnetic bearing rotor core 33 is mounted on the rotating shaft 8 at a position opposite to the axial thrust positioning magnetic bearing stator core 31. An axial electromagnetic thrust can be generated by the axial thrust positioning magnetic bearing coil 32 to axially limit the rotating shaft 8 rotating at high speed. The structure is simple and the installation is convenient. Among them, the axial thrust positioning magnetic bearing stator core 31 can be fixedly installed on the machine body 9 by screws, and the axial thrust positioning magnetic bearing rotor core 33 can be set to a structure axially opposite to the axial thrust positioning magnetic bearing stator core 31.

[0039] In this embodiment, the synchronous condenser assembly 1 includes a synchronous condenser stator core 11 mounted on the machine body 9 and a synchronous condenser stator winding 12 wound around the synchronous condenser stator core 11. A synchronous condenser rotor core 13 and a synchronous condenser rotor excitation winding 14 are mounted on the rotating shaft 8 at a position corresponding to the synchronous condenser stator core 11. The limited space of the machine body 9 and the rotating shaft 8 is reasonably utilized to set the synchronous condenser assembly 1, and the structure is compact. At the same time, synchronous condenser rotor protection assemblies 15 are arranged on both sides of the synchronous condenser rotor core 13 and the synchronous condenser rotor excitation winding 14 on the rotating shaft 8. The synchronous condenser rotor protection assemblies 15 can axially position the synchronous condenser assembly 1, and can also axially protect the synchronous condenser rotor core 13 and the synchronous condenser rotor excitation winding 14. The synchronous condenser rotor protection assemblies 15 can adopt two blocks arranged side by side, and the two blocks clamp and fix the synchronous condenser rotor core 13 and the synchronous condenser rotor excitation winding 14.

[0040] At the same time, in order to achieve stable control of the high-speed rotation of the rotating shaft 8, as Figure 1 shown, a radial sensor 4 for sensing the radial position of the rotating shaft 8 is installed inside the machine body 9. The radial sensor 4 can monitor the radial position of the rotating shaft 8 in real time, and automatically adjust the radial position of the rotating shaft 8 by controlling the electromagnetic force of the radial magnetic bearing assembly 2, so that the rotating shaft 8 can maintain high-speed stable rotation. An axial sensor 7 for sensing the axial position of the rotating shaft 8 is installed inside the machine body 9. The axial sensor 7 can monitor the axial position of the rotating shaft 8, and automatically adjust the axial position of the rotating shaft 8 by controlling the electromagnetic force of the axial thrust positioning magnetic bearing assembly 3.

[0041] In addition, as Figure 1 shown, auxiliary support bearings 10 are installed between both ends of the rotating shaft 8 and the machine body 9. The positions where both ends of the rotating shaft 8 pass through the machine body 9 can be supported by the auxiliary support bearings 10 to prevent the rotating shaft 8 from undergoing relatively large deformation.

[0042] As another implementation of this embodiment:

[0043] The flywheel 5 can also be provided in two, sleeved on the rotating shaft 8 at the same time, and the synchronous condenser assembly 1 is located between the two flywheels 5. The two flywheels 5 are symmetrically arranged with respect to the synchronous condenser assembly 1. This is beneficial to the balance during the high-speed rotation of the rotating shaft 8, and the weights of the two flywheels 5 can be customized according to needs.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0045] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A magnetic levitation high-inertia integrated synchronous condenser device, comprising a body, wherein a rotating shaft is installed inside the body, and it is characterized in that, In the middle of the rotating shaft, a flywheel and a synchronous condenser assembly are installed side by side. On both sides of the flywheel and the synchronous condenser assembly on the rotating shaft, at least one radial magnetic bearing assembly connected to the machine body is installed. Inside the machine body, axial thrust positioning magnetic bearing assemblies are also installed at both ends of the rotating shaft. A slip ring assembly is installed on the rotating shaft. The high-speed rotation of the rotating shaft is suspended and supported by controlling the electromagnetic forces of the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies. The radial magnetic bearing assembly includes a radial magnetic bearing rotor core installed on the rotating shaft and a stator magnetic circuit ring axially installed inside the machine body. A radial magnetic bearing stator core is installed on the radial inner side of the stator magnetic circuit ring. A radial magnetic bearing stator winding is arranged on the radial magnetic bearing stator core. The stator magnetic circuit ring and the radial magnetic bearing stator core are evenly divided into an upper half and a lower half by two magnetic pole isolation blocks. Among them, a permanent magnet ring is installed between the upper half stator magnetic circuit rings, and a stator magnetic circuit intermediate ring is installed between the lower half stator magnetic circuit rings. The stator magnetic circuit intermediate ring and the permanent magnet ring are separated by the magnetic pole isolation blocks.

2. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 1, wherein: A number of tooth-shaped structures are evenly distributed on the radial inner side of the radial magnetic bearing stator core, and the radial magnetic bearing stator winding is wound on the tooth-shaped structures.

3. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 1, characterized in that: A radial bearing seat is installed on the machine body, and the radial magnetic bearing assembly is installed on the radial bearing seat. Both the radial bearing seat and the magnetic pole isolation blocks are made of non-magnetic materials.

4. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 1, wherein: The axial thrust positioning magnetic bearing assembly includes an axial thrust positioning magnetic bearing stator core installed on the machine body and an axial thrust positioning magnetic bearing coil installed on the axial thrust positioning magnetic bearing stator core. An axial thrust positioning magnetic bearing rotor core is installed on the rotating shaft at a position opposite to the axial thrust positioning magnetic bearing stator core.

5. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 1, wherein: The synchronous condenser assembly includes a synchronous condenser stator core installed on the machine body and a synchronous condenser stator winding wound on the synchronous condenser stator core. A synchronous condenser rotor core and a synchronous condenser rotor excitation winding are installed on the rotating shaft at positions corresponding to the synchronous condenser stator core.

6. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 5, characterized in that: Synchronous condenser rotor protection assemblies are arranged on both sides of the synchronous condenser rotor core and the synchronous condenser rotor excitation winding on the rotating shaft.

7. The integrated synchronous condenser device with magnetic levitation and high inertia according to any one of claims 1-6, characterized in that: Radial sensors for sensing the radial position of the rotating shaft are installed inside the machine body.

8. The magnetically levitated high-inertia integrated synchronous condenser device according to claim 7, wherein: Axial sensors for sensing the axial position of the rotating shaft are installed inside the machine body.

9. The integrated synchronous condenser device with magnetic levitation and high inertia according to claim 7, characterized in that: Auxiliary support bearings are installed between both ends of the rotating shaft and the machine body.

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