CN117375305A - Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing - Google Patents
Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing Download PDFInfo
- Publication number
- CN117375305A CN117375305A CN202311323595.XA CN202311323595A CN117375305A CN 117375305 A CN117375305 A CN 117375305A CN 202311323595 A CN202311323595 A CN 202311323595A CN 117375305 A CN117375305 A CN 117375305A
- Authority
- CN
- China
- Prior art keywords
- magnetic bearing
- flywheel
- rotor
- energy storage
- integrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 47
- 239000000725 suspension Substances 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 230000006872 improvement Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention belongs to the technical field of magnetic suspension energy storage flywheels, and particularly relates to a magnetic suspension inner and outer double-layer reversal energy storage flywheel based on an integrated magnetic bearing, which comprises a lower base, wherein a containing groove is formed in the lower base, the top end of the lower base is fixedly connected with an upper base, and a coaxial reverse double-rotor system is arranged in the containing groove; the coaxial reverse double-rotor system comprises an inner rotor mechanism, inner axial suspension parts are arranged at two ends of the inner rotor mechanism, an integrated magnetic bearing is coaxially sleeved on the outer side of the inner rotor mechanism, an outer rotor mechanism is coaxially sleeved on the outer side of the integrated magnetic bearing, the rotation directions of the outer rotor mechanism and the inner rotor mechanism are opposite, and outer axial suspension parts are arranged at two ends of the outer rotor mechanism. According to the invention, the two flywheels are integrated together, so that the moment problem generated when the traditional energy storage flywheel works is solved under the conditions of low cost improvement and basically unchanged occupied volume, the upper energy storage limit of a single energy storage flywheel is improved, and the processing difficulty and the installation difficulty are greatly reduced.
Description
Technical Field
The invention belongs to the technical field of magnetic suspension energy storage flywheels, and particularly relates to a magnetic suspension inner and outer double-layer reversal energy storage flywheel based on an integrated magnetic bearing.
Background
The basic principle of flywheel energy storage is to convert electric energy into kinetic energy of a rotating body for storage. It generally includes flywheels, bearings, power shafts, motor generators, vacuum vessels, and power electronics. In the energy storage stage, an external energy supply device supplies power to the motor through power electronic equipment, continuously drives the flywheel, and converts electric energy into kinetic energy of the flywheel for storage; when the energy is required to be released, the flywheel is decelerated, the motor is used as a generator, and the power electronic equipment outputs electric power outwards to convert kinetic energy stored in the flywheel into electric energy. Meanwhile, in order to effectively reduce energy loss, the energy storage flywheel usually runs in a vacuum container.
The magnetic suspension energy storage flywheel with the traditional structure needs to accelerate and decelerate due to the energy storage and release process, and the rotation moment generated by the change of the angular speed can influence the movement of the movable carrier. When the carrier moves, the rotating energy storage flywheel can output gyroscopic moment outwards due to gyroscopic effect, and the motion of the carrier is influenced. The application and popularization of the energy storage flywheel on mobile carriers such as electric automobiles, satellites and the like are limited. In view of the above drawbacks, a common improvement method is to symmetrically mount another energy storage flywheel on the carrier. Through proper design and control, the rotation moment and the gyro moment of the two energy storage flywheels are mutually offset. However, this method is greatly costly and requires a large amount of space for the carrier.
The other improvement method is that two energy storage flywheels are installed in an inner-outer nested way, and the disturbance moment and the gyro moment of the two energy storage flywheels are mutually offset through proper design and control. However, the method has higher coaxiality requirements on the nested two layers of two rotors, otherwise, the poor coaxiality can not only make the rotation moment of the two energy storage flywheels and the gyro moment difficult to offset each other, but also introduce new disturbance moment, so that the processing difficulty and the installation difficulty are greatly increased.
Is not beneficial to the industrialized application of the energy storage flywheel on the mobile carrier. At the same time, the linear speed of the rotor cannot be too high due to the limitation of the material strength of the rotor. Therefore, the total energy storage amount of a single energy storage flywheel is limited, and the cost of the energy storage flywheel set and the requirement on a carrier space are also high. Is not beneficial to the industrialized popularization of the energy storage flywheel on the movable carrier.
Therefore, it is necessary to design a magnetic suspension inner and outer double-layer reversal energy storage flywheel based on an integrated magnetic bearing to solve the above problems.
Disclosure of Invention
The invention aims to provide a magnetic suspension inner and outer double-layer reversing energy storage flywheel based on an integrated magnetic bearing, which uses the integrated magnetic bearing to nest two flywheels together, improves the moment problem generated when the traditional energy storage flywheel works under the conditions of low cost improvement and basically unchanged occupied volume, and improves the upper energy storage limit of a single energy storage flywheel.
In order to achieve the above object, the present invention provides the following solutions: the magnetic suspension inner and outer double-layer reverse energy storage flywheel based on the integrated magnetic bearing comprises a lower base, wherein a containing groove is formed in the lower base, the top end of the lower base is fixedly connected with an upper base, and a coaxial reverse double-rotor system is arranged in the containing groove;
the coaxial reverse double-rotor system comprises an inner rotor mechanism, inner axial suspension parts are arranged at two ends of the inner rotor mechanism, an integrated magnetic bearing is coaxially sleeved outside the inner rotor mechanism, an outer rotor mechanism is coaxially sleeved outside the integrated magnetic bearing, the rotation direction of the outer rotor mechanism is opposite to that of the inner rotor mechanism, and outer axial suspension parts are arranged at two ends of the outer rotor mechanism.
Preferably, the inner rotor mechanism comprises a rotating shaft, the rotating shaft is vertically arranged in the accommodating groove in a rotating mode, a first spacer ring and a first inner radial magnetic bearing rotor core are sequentially fixedly sleeved on the upper portion of the outer side wall of the rotating shaft from top to bottom, a second inner radial magnetic bearing rotor core, a second spacer ring, an inner flywheel permanent magnet and a third spacer ring are sequentially fixedly sleeved on the lower portion of the outer side wall of the rotating shaft from top to bottom, an inner flywheel sheath is fixedly sleeved on the outer side of the inner flywheel permanent magnet, and the integrated magnetic bearings are coaxially sleeved on the outer side of the rotating shaft.
Preferably, the integrated magnetic bearing comprises two inner and outer integrated magnetic bearing cores, one inner and outer integrated magnetic bearing core corresponds to the first inner radial magnetic bearing rotor core, the other inner and outer integrated magnetic bearing core corresponds to the second inner radial magnetic bearing rotor core, a plurality of inner radial magnetic coils which are arranged at equal intervals are fixedly connected to the inner side wall of the inner and outer integrated magnetic bearing core, a plurality of outer radial magnetic coils which are arranged at equal intervals are fixedly connected to the outer side wall of the inner and outer integrated magnetic bearing core, and the outer radial magnetic coils correspond to the inner radial magnetic coils one by one.
Preferably, the inner axial suspension part comprises an inner flywheel axial magnetic bearing shell, a gap is reserved between the inner flywheel axial magnetic bearing shell and the end part of the rotating shaft, the inner flywheel axial magnetic bearing shell positioned above is fixedly connected with the bottom end of the upper base, the inner flywheel axial magnetic bearing shell positioned below is fixedly connected with the bottom wall of an expansion groove formed in the bottom end of the containing groove, and one end of the inner flywheel axial magnetic bearing shell, which is close to the rotating shaft, is fixedly connected with an inner flywheel axial magnetic bearing coil.
Preferably, an inner flywheel motor stator is coaxially sleeved on the outer side of the inner flywheel sheath in a rotating mode, and the inner flywheel motor stator is fixedly connected with the side wall of the expansion groove.
Preferably, the outer rotor mechanism comprises a cup-shaped rotor, the rotation direction of the cup-shaped rotor is opposite to that of the rotating shaft, the cup-shaped rotor is coaxially and rotatably sleeved outside the inner and outer integrated magnetic bearing iron cores, the upper part of the inner side wall of the cup-shaped rotor is sequentially and fixedly connected with a fourth spacing ring and a first outer radial magnetic bearing rotor iron core from top to bottom, the lower part of the inner side wall of the cup-shaped rotor is sequentially and fixedly connected with a second outer radial magnetic bearing rotor iron core and a fifth spacing ring from top to bottom, the first outer radial magnetic bearing rotor iron core corresponds to one inner and outer integrated magnetic bearing iron core, the second outer radial magnetic bearing rotor iron core corresponds to the other inner and outer integrated magnetic bearing iron core, the outer side wall of the cup-shaped rotor is sequentially and fixedly sleeved with a sixth spacing ring and an outer flywheel permanent magnet from top to bottom, and the outer flywheel permanent magnet is fixedly sleeved outside the outer flywheel.
Preferably, the outer side of the outer flywheel sheath is coaxially and rotatably sleeved with an outer flywheel motor stator, and the outer flywheel motor stator is fixedly connected with the inner side wall of the accommodating groove.
Preferably, the outer axial suspension part comprises an outer flywheel axial magnetic bearing shell, a gap is reserved between the outer flywheel axial magnetic bearing shell and the end part of the cup-shaped rotor, the outer flywheel axial magnetic bearing shell positioned above is fixedly connected with the bottom end of the upper base, the outer flywheel axial magnetic bearing shell positioned below is fixedly connected with the bottom wall of the containing groove, and one end, close to the cup-shaped rotor, of the outer flywheel axial magnetic bearing shell is fixedly connected with an outer flywheel axial magnetic bearing coil.
Compared with the prior art, the invention has the following advantages and technical effects:
1. the inner rotor mechanism and the outer rotor mechanism can store energy independently, the upper limit of the stored energy is higher, and the structure is more compact;
2. because the inner rotor mechanism and the outer rotor mechanism store energy independently, more energy is released in unit time when the energy is released;
3. the gyro moment of the energy storage flywheel and the moment problem generated in the energy storage and release stage can be improved;
4. the invention has the function of outputting torque besides the energy storage function, because the inner rotor mechanism and the outer rotor mechanism designed by the invention can work independently, both rotor mechanisms can output torque, therefore, the range of the output torque is larger, meanwhile, because the directions of the two rotor mechanisms are opposite, the directions of the output torque can be the same when the directions of acceleration are opposite, one of the rotor mechanisms can be utilized to carry out deceleration power generation, the generated electric energy is used for accelerating the other power supply, and the influence on external power supply or power consumption and other power equipment is reduced when the output torque is jointly output, so that the limitation on the output torque is less and more flexible.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view of the internal structure of the present invention;
FIG. 3 is a schematic diagram of an inner rotor mechanism according to the present invention;
FIG. 4 is a cross-sectional view of the inner rotor mechanism of the present invention;
FIG. 5 is a schematic view of an integrated magnetic bearing according to the present invention;
FIG. 6 is a schematic view of an outer rotor mechanism of the present invention;
FIG. 7 is a cross-sectional view of the outer rotor mechanism of the present invention;
FIG. 8 is a graph of generator power before flywheel input;
FIG. 9 is a graph of generator power after flywheel input;
FIG. 10 is a flywheel power curve;
fig. 11 is a frequency plot of the generator when the flywheel is put into operation.
1, a lower base; 2. a receiving groove; 3. an upper base; 4. a rotating shaft; 5. a first spacer ring; 6. a first inner radial magnetic bearing rotor core; 7. a second inner radial magnetic bearing rotor core; 8. a second spacer ring; 9. an inner flywheel permanent magnet; 10. an inner flywheel sheath; 11. a third spacer ring; 12. an inner and outer integrated magnetic bearing iron core; 13. an outer diameter magnetic coil; 14. an inner diameter magnetic coil; 15. a cup-shaped rotor; 16. a sixth spacer ring; 17. a fourth spacer ring; 18. a first outer radial magnetic bearing rotor core; 19. a fifth spacer ring; 20. a second outer radial magnetic bearing rotor core; 21. an outer flywheel permanent magnet; 22. an outer flywheel sheath; 23. an outer flywheel motor stator; 24. an inner flywheel motor stator; 25. an outer flywheel axial magnetic bearing housing; 26. an outer flywheel axial magnetic bearing coil; 27. an inner flywheel axial magnetic bearing housing; 28. an inner flywheel axial magnetic bearing coil; 29. expansion slots.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-7, the invention provides a magnetic suspension inner and outer double-layer reversal energy storage flywheel based on an integrated magnetic bearing, which comprises a lower base 1, wherein a containing groove 2 is formed in the lower base 1, the top end of the lower base 1 is fixedly connected with an upper base 3, and a coaxial reversal double-rotor system is arranged in the containing groove 2;
the coaxial reverse double-rotor system comprises an inner rotor mechanism, inner axial suspension parts are arranged at two ends of the inner rotor mechanism, an integrated magnetic bearing is coaxially sleeved on the outer side of the inner rotor mechanism, an outer rotor mechanism is coaxially sleeved on the outer side of the integrated magnetic bearing, the rotation directions of the outer rotor mechanism and the inner rotor mechanism are opposite, and outer axial suspension parts are arranged at two ends of the outer rotor mechanism.
The main functions of the lower base 1 and the upper base 3 are to fix the whole energy storage flywheel on a carrier.
Further optimizing scheme, inner rotor mechanism includes pivot 4, pivot 4 vertical rotation sets up in holding tank 2, pivot 4 lateral wall upper portion is equipped with first spacer ring 5 from top to bottom fixed cover in proper order, first internal radial magnetic bearing rotor core 6, pivot 4 lateral wall lower part is equipped with second internal radial magnetic bearing rotor core 7 from top to bottom fixed cover in proper order, second spacer ring 8, interior flywheel permanent magnet 9, third spacer ring 11, interior flywheel permanent magnet 9 outside fixed cover is equipped with interior flywheel sheath 10, the coaxial sleeve of integral type magnetic bearing is established in the pivot 4 outside.
The first inner radial magnetic bearing rotor core 6 and the second inner radial magnetic bearing rotor core 7 have the same structure, and the first spacer ring 5, the second spacer ring 8 and the third spacer ring 11 have the same structure.
The first inner radial magnetic bearing rotor core 6 and the second inner radial magnetic bearing rotor core 7 are interacted with an integrated magnetic bearing to form a complete magnetic bearing, the radial position of the magnetic force control rotating shaft 4 is generated, the first spacing ring 5 and the rotating shaft 4 are used for fixing the axial position of the first inner radial magnetic bearing rotor core 6 together, meanwhile, the first spacing ring 5 and the first inner radial magnetic bearing rotor core 6 are interacted, the third spacing ring 11 and the second inner radial magnetic bearing rotor core 7 are interacted to form a complete magnetic bearing, the axial position of the magnetic force control rotating shaft 4 is generated, the second spacing ring 8 and the rotating shaft 4 are used for fixing the position of the second inner radial magnetic bearing rotor core 7 together, and the second spacing ring 8 and the third spacing ring 11 are used for fixing the positions of the inner flywheel permanent magnet 9 and the inner flywheel sheath 10 together.
Further optimizing scheme, integral type magnetic bearing includes two inside and outside integral type magnetic bearing iron cores 12, inside and outside integral type magnetic bearing iron core 12 corresponds with first interior radial magnetic bearing rotor core 6, another inside and outside integral type magnetic bearing iron core 12 corresponds with second interior radial magnetic bearing rotor core 7, inside and outside integral type magnetic bearing iron core 12 inside wall fixedly connected with a plurality of internal diameter magnetic coils 14 that equidistant set up, outside diameter magnetic coil 13 that inside and outside integral type magnetic bearing iron core 12 lateral wall fixedly connected with a plurality of equidistant setting, external diameter magnetic coil 13 and internal diameter magnetic coil 14 one-to-one.
The number of the outer diameter magnetic coils 13 and the inner diameter magnetic coils 14 is preferably 8, the inner diameter magnetic coils 14 interact with the inner and outer integrated magnetic bearing iron cores 12, the first inner diameter magnetic bearing rotor iron core 6 and the second inner diameter magnetic bearing rotor iron core 7 to form a complete magnetic bearing, the radial position of the magnetic force control rotating shaft 4 is generated, the outer diameter magnetic coils 13 interact with the inner and outer integrated magnetic bearing iron cores 12 and the outer rotor mechanism to form a complete magnetic bearing, and the radial position of the magnetic force control outer rotor mechanism is generated.
Further optimizing scheme, the interior axial suspension portion includes interior flywheel axial magnetic bearing shell 27, leaves the clearance between interior flywheel axial magnetic bearing shell 27 and the pivot 4 tip, and interior flywheel axial magnetic bearing shell 27 and the upper base 3 bottom fixed connection of being located the top, the interior flywheel axial magnetic bearing shell 27 and the expansion groove 29 diapire fixed connection that the holding tank 2 bottom was seted up of being located the below, and interior flywheel axial magnetic bearing shell 27 is close to the one end fixedly connected with interior flywheel axial magnetic bearing coil 28 of pivot 4.
The main functions of the inner flywheel axial magnetic bearing housing 27 and the inner flywheel axial magnetic bearing coil 28 are to control the axial position of the rotating shaft 4 so as to suspend it.
In a further optimized scheme, an inner flywheel motor stator 24 is coaxially sleeved on the outer side of the inner flywheel sheath 10 in a rotating mode, and the inner flywheel motor stator 24 is fixedly connected with the side wall of the expansion groove 29.
The inner flywheel permanent magnet 9 and the inner flywheel motor stator 24 form a permanent magnet synchronous motor, the rotating shaft 4 is driven to rotate during energy storage, the rotating shaft 4 is used as a generator during energy release, kinetic energy of the rotating shaft 4 is converted into electric energy, and the inner flywheel sheath 10 limits the radial position of the inner flywheel permanent magnet 9 and prevents the inner flywheel permanent magnet 9 from being thrown out.
The main function of the inner flywheel motor stator 24 is to drive the rotation shaft 4 to rotate.
In a further optimization scheme, the outer rotor mechanism comprises a cup-shaped rotor 15, the rotation direction of the cup-shaped rotor 15 is opposite to that of a rotating shaft 4, the cup-shaped rotor 15 is coaxially and rotatably sleeved outside the inner and outer integrated magnetic bearing iron cores 12, the upper part of the inner side wall of the cup-shaped rotor 15 is sequentially and fixedly connected with a fourth spacing ring 17 and a first outer radial magnetic bearing rotor iron core 18 from top to bottom, the lower part of the inner side wall of the cup-shaped rotor 15 is sequentially and fixedly connected with a second outer radial magnetic bearing rotor iron core 20 and a fifth spacing ring 19 from top to bottom, the first outer radial magnetic bearing rotor iron core 18 corresponds to one inner and outer integrated magnetic bearing iron core 12, the second outer radial magnetic bearing rotor iron core 20 corresponds to the other inner and outer integrated magnetic bearing iron core 12, the outer side wall of the cup-shaped rotor 15 is sequentially and fixedly sleeved with a sixth spacing ring 16 and an outer flywheel permanent magnet 21 from top to bottom, and an outer flywheel sheath 22 is fixedly sleeved outside the outer flywheel permanent magnet 21.
The first outer radial magnetic bearing rotor core 18 and the second outer radial magnetic bearing rotor core 20 have the same structure, and the fourth spacer ring 17 and the fifth spacer ring 19 have the same structure.
The first outer radial magnetic bearing rotor core 18 interacts with one inner and outer integrated magnetic bearing core 12, the second outer radial magnetic bearing rotor core 20 interacts with the other inner and outer integrated magnetic bearing core 12 to form a complete magnetic bearing, the radial position of the cup-shaped rotor 15 is controlled by magnetic force, the fourth spacer ring 17 and the cup-shaped rotor 15 together fix the axial position of the first outer radial magnetic bearing rotor core 18, the fifth spacer ring 19 and the cup-shaped rotor 15 together fix the axial position of the second outer radial magnetic bearing rotor core 20, and the sixth spacer ring 16 and the cup-shaped rotor 15 together fix the axial positions of the outer flywheel permanent magnet 21 and the outer flywheel sheath 22.
The main function of the shaft 4 is to convert external electric energy into kinetic energy by high-speed rotation for storage, and the shaft 4 is turned opposite to the cup-shaped rotor 15.
In a further optimized scheme, an outer flywheel motor stator 23 is coaxially sleeved on the outer side of the outer flywheel sheath 22 in a rotating mode, and the outer flywheel motor stator 23 is fixedly connected with the inner side wall of the accommodating groove 2.
The outer flywheel permanent magnet 21 and the outer flywheel motor stator 23 form a permanent magnet synchronous motor, and drive the cup-shaped rotor 15 to rotate when energy is stored, and act as a generator when energy is released, so that the kinetic energy of the cup-shaped rotor 15 is converted into electric energy. The outer flywheel sheath 22 limits the radial position of the outer flywheel permanent magnet 21, preventing the outer flywheel permanent magnet 21 from being thrown away. The main function of the cup-shaped rotor 15 is to convert external electric energy into kinetic energy for storage by high-speed rotation.
The main function of the outer flywheel motor stator 23 is to drive the cup-shaped rotor 15 in rotation.
Further optimizing scheme, outer axial suspension includes outer flywheel axial magnetic bearing shell 25, leaves the clearance between outer flywheel axial magnetic bearing shell 25 and the cup rotor 15 tip, and outer flywheel axial magnetic bearing shell 25 and the upper base 3 bottom fixed connection of being located the top, outer flywheel axial magnetic bearing shell 25 and holding tank 2 diapire fixed connection of being located the below, and outer flywheel axial magnetic bearing shell 25 is close to the one end fixedly connected with outer flywheel axial magnetic bearing coil 26 of cup rotor 15.
The main function of the outer freewheel axial magnetic bearing housing 25 and the outer freewheel axial magnetic bearing coil 26 is to control the axial position of the cup-shaped rotor 15 to levitate it.
For more convenient explanation, an energy storage flywheel test platform is built, the test result is shown in fig. 8-11, and the power drop and the protrusion of the generator before the flywheel is put into operation in response to the power demand are obvious in fig. 8. Fig. 9 and 10 are power curves after the flywheel is put in, and after the flywheel is put in, fluctuation of power response of the generator is absorbed by the flywheel, and the fluctuation of power of the generator becomes gentle. During this process the frequency of the generator appears smooth and the ripple does not exceed (50±1) Hz range, as shown in fig. 11. In conclusion, comparison of results shows that after the flywheel is put into operation, the power response of the generator is improved, so that the voltage quality of a power grid is improved, meanwhile, when the power demand is reduced, energy is fed back into the flywheel, and when the power demand is increased, the energy is released, and the purposes of energy conservation and emission reduction are achieved.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing is characterized by comprising a lower base (1), wherein an accommodating groove (2) is formed in the lower base (1), an upper base (3) is fixedly connected to the top end of the lower base (1), and a coaxial reversing double-rotor system is arranged in the accommodating groove (2);
the coaxial reverse double-rotor system comprises an inner rotor mechanism, inner axial suspension parts are arranged at two ends of the inner rotor mechanism, an integrated magnetic bearing is coaxially sleeved outside the inner rotor mechanism, an outer rotor mechanism is coaxially sleeved outside the integrated magnetic bearing, the rotation direction of the outer rotor mechanism is opposite to that of the inner rotor mechanism, and outer axial suspension parts are arranged at two ends of the outer rotor mechanism.
2. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing is characterized in that the inner rotor mechanism comprises a rotating shaft (4), the rotating shaft (4) is vertically and rotatably arranged in the accommodating groove (2), a first spacing ring (5) and a first inner radial magnetic bearing rotor core (6) are sequentially fixedly sleeved on the upper portion of the outer side wall of the rotating shaft (4) from top to bottom, a second inner radial magnetic bearing rotor core (7), a second spacing ring (8), an inner flywheel permanent magnet (9) and a third spacing ring (11) are sequentially fixedly sleeved on the lower portion of the outer side wall of the rotating shaft (4) from top to bottom, an inner flywheel sheath (10) is fixedly sleeved on the outer side of the inner flywheel permanent magnet (9), and the integrated magnetic bearing is coaxially sleeved on the outer side of the rotating shaft (4).
3. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing according to claim 2, wherein the integrated magnetic bearing comprises two inner and outer integrated magnetic bearing cores (12), one inner and outer integrated magnetic bearing core (12) corresponds to the first inner radial magnetic bearing rotor core (6), the other inner and outer integrated magnetic bearing core (12) corresponds to the second inner radial magnetic bearing rotor core (7), a plurality of inner radial magnetic coils (14) which are arranged at equal intervals are fixedly connected to the inner side wall of the inner and outer integrated magnetic bearing core (12), a plurality of outer radial magnetic coils (13) which are arranged at equal intervals are fixedly connected to the outer side wall of the inner and outer integrated magnetic bearing core (12), and the outer radial magnetic coils (13) correspond to the inner radial magnetic coils (14) one by one.
4. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing according to claim 2, wherein the inner axial suspension part comprises an inner flywheel axial magnetic bearing shell (27), a gap is reserved between the inner flywheel axial magnetic bearing shell (27) and the end part of the rotating shaft (4), the inner flywheel axial magnetic bearing shell (27) positioned above is fixedly connected with the bottom end of the upper base (3), the inner flywheel axial magnetic bearing shell (27) positioned below is fixedly connected with the bottom wall of an expansion groove (29) formed in the bottom end of the accommodating groove (2), and one end, close to the rotating shaft (4), of the inner flywheel axial magnetic bearing shell (27) is fixedly connected with an inner flywheel axial magnetic bearing coil (28).
5. The magnetic suspension inner and outer double-layer reverse energy storage flywheel based on the integrated magnetic bearing according to claim 4, wherein an inner flywheel motor stator (24) is coaxially sleeved on the outer side of the inner flywheel sheath (10), and the inner flywheel motor stator (24) is fixedly connected with the side wall of the expansion groove (29).
6. The magnetic suspension inner and outer double-layer reverse energy storage flywheel based on an integrated magnetic bearing according to claim 3, wherein the outer rotor mechanism comprises a cup-shaped rotor (15), the cup-shaped rotor (15) and the rotating shaft (4) are opposite in rotating direction, the cup-shaped rotor (15) is coaxially sleeved outside the inner and outer integrated magnetic bearing iron cores (12) in a rotating mode, a fourth spacer ring (17) and a first outer radial magnetic bearing rotor iron core (18) are sequentially and fixedly connected to the upper portion of the inner side wall of the cup-shaped rotor (15) from top to bottom, a second outer radial magnetic bearing rotor iron core (20) and a fifth spacer ring (19) are sequentially and fixedly connected to the lower portion of the inner side wall of the cup-shaped rotor (15) from top to bottom, the first outer radial magnetic bearing rotor iron core (18) corresponds to one inner and outer integrated magnetic bearing iron core (12), the second outer radial magnetic bearing rotor iron core (20) corresponds to the other inner and outer integrated magnetic bearing iron core (12), a sixth spacer ring (16) and a flywheel (21) are sequentially and fixedly sleeved on the outer side wall of the cup-shaped rotor (15) from top to bottom, and the flywheel (21) is fixedly sleeved with a permanent magnet outer jacket (22).
7. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing according to claim 6, wherein an outer flywheel motor stator (23) is coaxially sleeved outside the outer flywheel sheath (22), and the outer flywheel motor stator (23) is fixedly connected with the inner side wall of the accommodating groove (2).
8. The magnetic suspension inner and outer double-layer reversing energy storage flywheel based on the integrated magnetic bearing according to claim 6, wherein the outer axial suspension part comprises an outer flywheel axial magnetic bearing shell (25), a gap is reserved between the outer flywheel axial magnetic bearing shell (25) and the end part of the cup-shaped rotor (15), the outer flywheel axial magnetic bearing shell (25) positioned above is fixedly connected with the bottom end of the upper base (3), the outer flywheel axial magnetic bearing shell (25) positioned below is fixedly connected with the bottom wall of the accommodating groove (2), and one end, close to the cup-shaped rotor (15), of the outer flywheel axial magnetic bearing shell (25) is fixedly connected with an outer flywheel axial magnetic bearing coil (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323595.XA CN117375305A (en) | 2023-10-13 | 2023-10-13 | Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323595.XA CN117375305A (en) | 2023-10-13 | 2023-10-13 | Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117375305A true CN117375305A (en) | 2024-01-09 |
Family
ID=89388598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311323595.XA Pending CN117375305A (en) | 2023-10-13 | 2023-10-13 | Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117375305A (en) |
-
2023
- 2023-10-13 CN CN202311323595.XA patent/CN117375305A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8030787B2 (en) | Mbackup flywheel power supply | |
| WO2016103740A1 (en) | Rotating electric machine | |
| US5703423A (en) | Energy storage flywheel system | |
| CN202713053U (en) | Flywheel battery supported and driven by split magnetic levitation switch reluctance motor | |
| CN102723804B (en) | Flywheel battery supported and driven by split magnetic levitation switch reluctance motor | |
| CN107425647A (en) | Using the vehicle-mounted flying wheel battery of five degree of freedom hybrid magnetic bearing | |
| CN103051124B (en) | Stator-free dual-electric brush dual-rotor outer circle permanent magnet synchronous motor | |
| CN107070073B (en) | Magnetic suspension flywheel battery | |
| WO2022236896A1 (en) | Ultra-thin vehicle-mounted magnetic suspension flywheel battery and working method therefor | |
| JP2002247822A (en) | Synchronous motor generator with gap adjusting device | |
| CN108365719A (en) | A kind of deflectable bimorph transducer switched reluctance wind-driven generator | |
| CN103036378B (en) | Without three brush birotor inner ring permanent magnet synchronous motors of stator | |
| CN113037001B (en) | Flywheel energy storage device based on outer rotor bearingless permanent magnet synchronous motor | |
| CN103368326A (en) | Low-power-consumption magnetic suspension flywheel energy storing device | |
| CN103078457B (en) | Double-rotor synchronous motor with two electric brushes and permanent magnets on inner circle and without stator | |
| CN117375305A (en) | Magnetic suspension inner and outer double-layer reverse energy storage flywheel based on integrated magnetic bearing | |
| CN103078458B (en) | Stator-free brushless dual-rotor outer ring permanent magnet synchronous motor with rotating controller | |
| CN208904827U (en) | The flywheel energy storage system of curved surface variable cross-section rotor mixing bearing | |
| CN112065856B (en) | Four-pole internal and external double-rotor hybrid magnetic bearing | |
| CN101860114A (en) | Integrated switched reluctance machine flywheel energy storage device | |
| CN215733969U (en) | Contrarotating birotor bearingless asynchronous motor | |
| CN203617834U (en) | Low-power magnetic suspension flywheel energy storage apparatus | |
| CN103036379A (en) | Three-brush double-rotor outer ring permanent magnet synchronous motor without stator | |
| CN209892623U (en) | Axial radial electromagnetic magnetic bearing | |
| CN108547867B (en) | Axial self-loop three-degree-of-freedom spherical hybrid magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Kun Inventor after: Bo Le Inventor after: Wang Can Inventor after: Zheng Shiqiang Inventor after: Zhou Yinfeng Inventor after: Liu Gang Inventor before: Wang Kun Inventor before: Bo Le Inventor before: Zheng Shiqiang Inventor before: Zhou Yinfeng Inventor before: Liu Gang Inventor before: Wang Can |