Magnetic suspension high-inertia integrated synchronous phase modifier device

Abstract

The invention discloses a magnetic suspension high-inertia integrated synchronous phase modifier device which comprises a machine body, a rotating shaft is installed in the machine body, a flywheel and a synchronous phase modifier assembly are installed in the middle of the rotating shaft side by side, and at least one radial magnetic bearing assembly connected with the machine body is installed on the rotating shaft and located on the two sides of the flywheel and the synchronous phase modifier assembly. Axial thrust positioning magnetic bearing assemblies located at the two ends of the rotating shaft are further installed in the machine body, a sliding ring assembly is installed on the rotating shaft, and high-speed rotation of the rotating shaft is supported in a suspended mode by controlling electromagnetic force of the radial magnetic bearing assemblies and the axial thrust positioning magnetic bearing assemblies. The flywheel and the synchronous phase modifier assembly are integrated together, a split type installation structure is abandoned, a coupler and an auxiliary system do not need to be arranged, the rotating shaft can be supported in a suspended mode by installing the radial magnetic bearing assembly and the axial thrust positioning magnetic bearing assembly, mechanical contact and friction loss are avoided, the complexity of the system is greatly simplified, and the reliability of the system is improved. And the operation and maintenance cost is low.

Description

Technical Field

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

[0002] As the proportion of new energy in new power systems increases significantly, the trend of power electronics in power systems is becoming increasingly serious, and the voltage support, inertia support and frequency regulation capabilities of power systems continue to weaken, seriously threatening the safe and stable operation of power systems. Therefore, GB 38755-2019 "Guidelines for Safety and Stability of Power Systems" requires that new energy stations should provide a certain short-circuit capacity and inertia support to the system; at the same time, it requires that new energy stations should improve their regulation capabilities, and when necessary, they should be equipped with gas power stations, pumped storage power stations, energy storage power stations and other regulation resources and dynamic reactive regulation equipment such as phase regulators, static synchronous compensators, and static reactive compensators.

[0003] Distributed synchronous condensers for application in new energy stations, especially high-inertia synchronous condensers, have become key equipment to ensure the sustainable development of new energy.

[0004] Existing high-inertia synchronous condenser devices generally include synchronous condensers, gear set equipment and energy storage flywheel equipment, such as CN113708413A, in which the synchronous condenser and the flywheel device are connected by a coupling, and 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. They need to regularly check the coaxiality and make adjustments. The cost of use is relatively high and the occupied area is relatively large. In addition, the existing mechanical bearings and auxiliary systems have complex structures and generate a lot of heat, and a separate heat dissipation system needs to be set up. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a magnetically suspended high-inertia integrated synchronous phase condenser device, comprising a body, a rotating shaft is installed inside the body, a flywheel and a synchronous phase condenser assembly are installed side by side in the middle of the rotating shaft, at least one radial magnetic bearing assembly connected to the body is installed on both sides of the flywheel and the synchronous phase condenser assembly on the rotating shaft, an axial thrust positioning magnetic bearing assembly is also installed in the body and located at both ends of the rotating shaft, a slip ring assembly is installed on the rotating shaft, and the high-speed rotation of the rotating shaft is suspended and supported by controlling the electromagnetic force of the radial magnetic bearing assembly and the axial thrust positioning magnetic bearing assembly, the flywheel and the synchronous phase condenser assembly are integrated together and the split installation structure is abandoned, the space occupied is relatively small, and there is no need to set up a coupling and an auxiliary system, and the high-speed rotation of the rotating shaft can be suspended and supported by installing the radial magnetic bearing assembly and the axial thrust positioning magnetic bearing assembly, without mechanical contact, friction loss, and no need for lubrication, which greatly simplifies the complexity of the system and has relatively low operation and maintenance costs.

[0007] Preferably, the radial magnetic bearing assembly comprises a radial magnetic bearing rotor core mounted on a rotating shaft and a stator magnetic circuit ring axially mounted on the inner side of a machine body, a radial magnetic bearing stator core is mounted 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 equally divided into an upper half and a lower half by two magnetic pole isolation blocks, wherein a permanent magnet ring is mounted between the stator magnetic circuit rings in the upper half, and a stator magnetic circuit intermediate ring is mounted between the stator magnetic circuit rings in the lower half, the stator magnetic circuit intermediate ring and the permanent magnet ring are separated by magnetic pole isolation blocks, and a magnetic circuit setting mode is adopted in which the permanent magnet ring and the stator magnetic circuit intermediate ring are arranged up and down, 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, and since the permanent magnet part does not require power supply control, the power supply capacity of the electromagnetic bearing can be effectively reduced.

[0008] Preferably, a plurality of tooth-like 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 around the tooth-like 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 machine body, and the radial magnetic bearing assembly is installed on the radial bearing seat. The radial bearing seat and the magnetic pole isolation block are both made of non-magnetic materials. The radial bearing seat can be installed on the machine body as a separate part, which is convenient for installation, and the materials of the radial bearing seat and the machine body can be made different.

[0010] Preferably, the axial thrust positioning magnetic bearing assembly comprises 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. The axial thrust positioning magnetic bearing coil can generate axial electromagnetic thrust to axially limit the high-speed rotating shaft. The structure is simple and easy to install.

[0011] Preferably, the synchronous condenser assembly comprises a synchronous condenser stator core mounted on a 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, so that the synchronous condenser assembly is arranged by rationally utilizing the limited space of the machine body and the rotating shaft, and the structure is compact.

[0012] Preferably, a synchronous condenser rotor protection assembly is provided 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 assembly 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 shaft is installed inside the body. The radial sensor can monitor the radial position of the shaft in real time and automatically adjust the radial position of the shaft by controlling the electromagnetic force of the radial magnetic bearing assembly, so that the 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 body. The axial sensor can monitor the axial position of the rotating shaft and automatically adjust the axial position of the rotating shaft by controlling the electromagnetic force of the axial thrust positioning magnetic bearing assembly.

[0015] Preferably, auxiliary support bearings are installed between the two ends of the rotating shaft and the machine body, and the positions where the two 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 relatively large deformation.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The flywheel and synchronous condenser components are integrated together and the split installation structure is abandoned. The space occupied is relatively small, and there is no need to set up couplings and auxiliary systems. By installing radial magnetic bearing components and axial thrust positioning magnetic bearing components, the high-speed rotation of the shaft can be suspended and supported. There is no mechanical contact, no friction loss, and no need for lubrication. The complexity of the system is greatly simplified, and the operation and maintenance costs are relatively low. 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. PM It offsets the gravity G of the rotating shaft, reduces the power capacity of the magnetic bearing, adjusts the current flowing into the stator winding of the radial magnetic bearing, and adjusts the size of the electromagnetic force to achieve rotor suspension.

[0017] 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 axial positioning of the rotor is achieved by adjusting the electromagnetic force by adjusting the current flowing into the axial thrust positioning magnetic bearing coil.

[0018] The synchronous condenser rotor is coaxially arranged with the flywheel to increase the rotor's rotational inertia and achieve high-speed suspension of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front cross-sectional structural diagram of the present invention; Figure 2 It is an enlarged structural diagram of the synchronous condenser assembly of the present invention; Figure 3 It is a cross-sectional enlarged structural diagram of the radial magnetic bearing assembly of the present invention; Figure 4 for Figure 3 AA section structure diagram; Figure 5 for Figure 3 BB section structure diagram; Figure 6 It is a schematic diagram of the magnetic circuit of the radial magnetic bearing assembly of the present invention; Figure 7 It is an enlarged structural diagram of the axial thrust positioning magnetic bearing assembly of the present invention.

[0020] Reference numerals: 1. Synchronous condenser assembly, 11. Synchronous condenser stator core, 12. Synchronous condenser stator winding, 13. Synchronous condenser rotor core, 14. Synchronous condenser rotor excitation winding, 15. Synchronous condenser rotor protection assembly, 2. Radial magnetic bearing assembly, 21. Radial magnetic bearing stator core, 22. Radial magnetic bearing stator winding, 23. Radial magnetic bearing rotor core, 24. Stator magnetic circuit ring, 25. Permanent magnet ring, 26. Stator magnetic circuit intermediate ring, 27. Pole isolation block, 28. Radial bearing seat, 3. Axial thrust positioning magnetic bearing assembly, 31. Axial thrust positioning magnetic bearing stator core, 32. Axial thrust positioning magnetic bearing coil, 33. Axial thrust positioning magnetic bearing rotor core, 4. Radial sensor, 5. Flywheel, 6. Slip ring assembly, 7. Axial sensor, 8. Rotating shaft, 9. Machine body, 10. Auxiliary support bearing. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1-7 As shown, the present invention solves the problems of high cost, complex structure and need for a separate heat dissipation system caused by the split structure of the existing high inertia synchronous condenser devices, and provides the following technical solutions: a magnetically suspended high inertia integrated synchronous condenser device, comprising a body 9, a rotating shaft 8 is installed inside the body 9, a flywheel 5 and a synchronous condenser assembly 1 are installed side by side in the middle of the rotating shaft 8, at least one radial magnetic bearing assembly 2 connected to the body 9 is installed on both sides of the flywheel 5 and the synchronous condenser assembly 1 on the rotating shaft 8, and axial thrust bearings 2 located at both ends of the rotating shaft 8 are also installed in the body 9. The force positioning magnetic bearing assembly 3, the slip ring assembly 6 is installed on the rotating shaft 8, and the high-speed rotation of the rotating shaft 8 is suspended and supported by controlling the electromagnetic force of the radial magnetic bearing assembly 2 and the axial thrust positioning magnetic bearing assembly 3. The flywheel 5 and the synchronous phase shifter assembly 1 are integrated together and the split installation structure is abandoned, which occupies a relatively small space and does not require a coupling and an 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 suspended and supported, without mechanical contact, friction loss, and no lubrication, which greatly simplifies the complexity of the system and has a relatively low operation and maintenance cost.

[0023] Specifically, the body 9 includes the rotating shaft 8, the synchronous condenser assembly 1 and the flywheel 5, and is a whole from the appearance, that is, an integrated structure. Compared with the traditional structure in which the synchronous condenser, the gear set equipment and the energy storage flywheel are separated, the connection of the coupling is omitted, and the synchronous condenser assembly 1 and the flywheel 5 are relatively close, which can increase the rotational inertia of the rotating shaft 8, and is 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 radial magnetic bearing assemblies 2 can be set according to the length of the rotating shaft 8, and multiple radial magnetic bearing assemblies 2 can be installed side by side on any side of the flywheel 5 and the synchronous condenser assembly 1, and the multiple radial magnetic bearing assemblies 2 are controlled uniformly.

[0024] In this embodiment, the radial magnetic bearing assembly 2 includes a radial magnetic bearing rotor core 23 installed on the rotating shaft 8 and a stator magnetic circuit ring 24 installed side by side on the inner side of the body 9, a radial magnetic bearing stator core 21 is installed on the radial inner side of the stator magnetic circuit ring 24, a radial magnetic bearing stator winding 22 is arranged 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 an upper half and a lower half by two magnetic pole isolation blocks 27, wherein a permanent magnet ring 25 is installed between the stator magnetic circuit rings 24 in the upper half, and a stator magnetic circuit intermediate ring 26 is installed between the stator magnetic circuit rings 24 in the lower half, and the stator magnetic circuit intermediate ring 26 is separated from the permanent magnet ring 25 by a magnetic pole isolation block 27, wherein 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 material.

[0025] The radial magnetic bearing stator magnetic circuit ring in this embodiment does not adopt an integrated structure, but a split structure that is separated from each other up and down, wherein the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 are arranged in a magnetic circuit setting manner in which they are arranged up and down, and 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, wherein the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 are both semi-annular, separated by a magnetic pole isolation block 27, and the central angles of the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 can be consistent or inconsistent, and can be adjusted as needed. The rotating shaft of a magnetically suspended high-inertia synchronous phase regulator weighs about tens of tons and requires hundreds of thousands of N of electromagnetic force support. Relying solely on electromagnetic bearings requires a large power supply. Therefore, a "permanent magnet + electromagnetic" hybrid radial magnetic bearing structure is proposed in this embodiment, and the permanent magnet ring 25 and the stator magnetic circuit intermediate ring 26 generate electromagnetic forces F PM and F EM This bearing structure is only equipped with a permanent magnet ring 25 in the upper half, and no permanent magnet is installed in the lower half. The permanent magnet ring 25 generates a permanent electromagnetic force F PM The direction of gravity G is opposite to the rotation shaft 8, and the resultant force in the direction of gravity is F b =GF 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, so it is only necessary to control the electromagnetic force of the stator magnetic circuit intermediate ring 26.

[0026] Specifically, Figure 6As shown, the radial magnetic bearing in this embodiment forms an axial magnetic circuit structure divided into two paths: the first path: the upper magnetic bearing along the stator magnetic circuit ring 24 → permanent magnet ring 25 → stator magnetic circuit ring 24 → radial magnetic bearing stator core 21 → radial magnetic bearing rotor core 23 → radial magnetic bearing stator core 21 → stator magnetic circuit ring 24; the second path: the lower magnetic bearing along the stator magnetic circuit ring 24 → stator magnetic circuit intermediate ring 26 → stator magnetic circuit ring 24 → radial magnetic bearing stator core 21 → radial magnetic bearing rotor core 23 → radial magnetic bearing stator core 21 → stator magnetic circuit ring 24. The directions of the two axial magnetic circuits are opposite, and the electromagnetic force F generated by the first axial magnetic circuit is PM The second axial magnetic circuit generates an electromagnetic force F EM The rotating shaft 8 is also lifted upwards due to the repulsive force, so that the rotating shaft 8 can be suspended and rotated.

[0027] Among them, the radial inner side of the radial magnetic bearing stator core 21 is evenly distributed with a plurality of tooth structures, and the radial magnetic bearing stator winding 22 is wound around the tooth structure, which can improve the electromagnetic force generated by the radial magnetic bearing stator core 21. The number of tooth structures can be 4 or 8, and can be adjusted as needed.

[0028] like Figure 3 As shown, a radial bearing seat 28 is installed on the body 9, and the radial magnetic bearing assembly 2 is installed on the radial bearing seat 28. The radial bearing seat 28 and the magnetic pole isolation block 27 are both made of non-magnetic materials. The radial bearing seat 28 can be installed with the body 9 as a separate part, which is convenient for installation, and the materials of the radial bearing seat 28 and the body 9 can be made different.

[0029] like Figure 7 As shown, the axial thrust positioning magnetic bearing assembly 3 includes an axial thrust positioning magnetic bearing stator core 31 installed on the body 9 and an axial thrust positioning magnetic bearing coil 32 installed on the axial thrust positioning magnetic bearing stator core 31, and an axial thrust positioning magnetic bearing rotor core 33 is installed on the rotating shaft 8 at a position opposite to the axial thrust positioning magnetic bearing stator core 31. The axial thrust positioning magnetic bearing coil 32 can generate axial electromagnetic thrust to axially limit the high-speed rotating shaft 8. The structure is simple and easy to install. The axial thrust positioning magnetic bearing stator core 31 can be fixedly installed with the body 9 by screws, and the axial thrust positioning magnetic bearing rotor core 33 can be set as a structure axially opposite to the axial thrust positioning magnetic bearing stator core 31.

[0030] In this embodiment, the synchronous condenser assembly 1 comprises a synchronous condenser stator core 11 mounted on the body 9 and a synchronous condenser stator winding 12 wound on 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 synchronous condenser assembly 1 is arranged by rationally utilizing the limited space of the body 9 and the rotating shaft 8, and the structure is compact. At the same time, a synchronous condenser rotor protection assembly 15 is 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 assembly 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 assembly 15 can adopt two block blocks arranged side by side, and the two block blocks clamp and fix the synchronous condenser rotor core 13 and the synchronous condenser rotor excitation winding 14.

[0031] At the same time, in order to achieve stable control of the high-speed rotation of the shaft 8, as Figure 1 As shown, a radial sensor 4 for sensing the radial position of the rotating shaft 8 is installed inside the 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 and stable rotation. An axial sensor 7 for sensing the axial position of the rotating shaft 8 is installed inside the 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.

[0032] In addition, if Figure 1 As shown, auxiliary support bearings 10 are installed between the two ends of the rotating shaft 8 and the machine body 9. The positions where the two 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.

[0033] As another implementation scheme of this embodiment: The flywheel 5 can also be provided in two pieces and simultaneously mounted on the rotating shaft 8, and the synchronous phase condenser assembly 1 is located between the two flywheels 5. The two flywheels 5 are axially symmetrically arranged with respect to the synchronous phase condenser assembly 1, which is beneficial to the balance of the rotating shaft 8 when rotating at high speed, and the weight of the two flywheels 5 can be individually set as needed.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A magnetically suspended high-inertia integrated synchronous condenser device, comprising a body, wherein a rotating shaft is installed inside the body, characterized in that: A flywheel and a synchronous phase condenser assembly are installed side by side in the middle of the rotating shaft, at least one radial magnetic bearing assembly connected to the body is installed on both sides of the flywheel and the synchronous phase condenser assembly on the rotating shaft, and axial thrust positioning magnetic bearing assemblies are also installed in the body at both ends of the rotating shaft. A slip ring assembly is installed on the rotating shaft, and the high-speed rotation of the rotating shaft is suspended and supported by controlling the electromagnetic force of the radial magnetic bearing assembly and the axial thrust positioning magnetic bearing assembly.

2. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 1, characterized in that: The radial magnetic bearing assembly comprises a radial magnetic bearing rotor core mounted on a rotating shaft and a stator magnetic circuit ring axially mounted on the inner side of a machine body, a radial magnetic bearing stator core is mounted 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 equally divided into an upper half and a lower half by two magnetic pole isolation blocks, wherein a permanent magnet ring is mounted between the stator magnetic circuit rings in the upper half, a stator magnetic circuit intermediate ring is mounted between the stator magnetic circuit rings in the lower half, and the stator magnetic circuit intermediate ring and the permanent magnet ring are separated by magnetic pole isolation blocks.

3. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 2, characterized in that: A plurality 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.

4. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 2, 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. The radial bearing seat and the magnetic pole isolation block are both made of non-magnetic conductive materials.

5. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 1, characterized in that: The axial thrust positioning magnetic bearing assembly comprises 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.

6. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 1, characterized in that: The synchronous condenser assembly comprises a synchronous condenser stator core mounted on a 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.

7. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 6, characterized in that: Synchronous condenser rotor protection components are arranged on the rotating shaft at both sides of the synchronous condenser rotor iron core and the synchronous condenser rotor excitation winding.

8. The magnetically suspended high-inertia integrated synchronous phase condenser device according to any one of claims 1 to 7, characterized in that: A radial sensor for sensing the radial position of the rotating shaft is installed inside the machine body.

9. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 8, characterized in that: An axial sensor for sensing the axial position of the rotating shaft is installed inside the machine body.

10. The magnetically suspended high-inertia integrated synchronous phase condenser device according to claim 8, characterized in that: Auxiliary support bearings are installed between the two ends of the rotating shaft and the machine body.

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