CN116247854A - Concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor - Google Patents
Concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor Download PDFInfo
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- CN116247854A CN116247854A CN202310256190.2A CN202310256190A CN116247854A CN 116247854 A CN116247854 A CN 116247854A CN 202310256190 A CN202310256190 A CN 202310256190A CN 116247854 A CN116247854 A CN 116247854A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- 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
-
- 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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of precision motors and mechanical energy storage, in particular to a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor, which comprises a shell, wherein a motor stator is arranged in the shell, the motor stator comprises a stator iron core which is arranged in a segmented mode, a plurality of pairs of windings which are symmetrically distributed along the circumference by 180 degrees are arranged on the motor stator, the symmetrical distribution of the plurality of pairs of windings generates couple moment which is symmetrical by 180 degrees, the ratio Z/m of the number of winding slots of the motor stator to the number of phases of the motor is an even number, stator magnetic poles are arranged on the outer side of each winding slot, a motor rotor is arranged in the motor stator, and magnetic force components which are arranged in a segmented mode are arranged on the motor rotor; through radial active magnetic suspension and axial passive magnetic suspension, the motor rotor can be completely and naturally suspended as long as the motor rotor rotates, and the motor rotor has natural and natural high reliability and simplicity and has an excellent motor four-quadrant control function.
Description
Technical Field
The invention relates to the technical field of precision motors and mechanical energy storage, in particular to a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor.
Background
The flywheel energy storage stores energy through a flywheel rotating at a high speed, so that the cyclic conversion of electric energy and kinetic energy is realized. It is a purely physical energy storage mode.
The latest technology development direction of flywheel energy storage is to adopt a magnetic suspension technology, so that a flywheel rotor rotates in a complete magnetic suspension state in a vacuum environment, friction loss can be reduced to the greatest extent, energy storage density and energy conversion efficiency are improved, and service life is prolonged. Compared with other energy storage technologies, the magnetic suspension flywheel energy storage technology has the advantages of high safety and reliability, long service life, high energy density, high discharge response speed, high energy conversion efficiency, short construction period, no restriction by construction sites, low operation and maintenance cost, green and pollution-free whole life cycle and the like, is wide in application field and huge in market potential, and is an important technical development direction of the energy storage field.
The flywheel energy storage system has the advantages of high energy storage density, high power density, low requirement on environment, modularization, capability of easily detecting the discharge depth, wide application occasions, long service life of flywheel energy storage, simplicity in maintenance and great reduction of electric energy storage cost, and can be charged and discharged for minutes.
Along with the continuous development of the technologies such as power electronics technology, magnetic suspension technology, new material development research and the like, flywheel energy storage technology becomes more and more perfect, the application range also extends to the fields of traffic, distributed energy systems, power supply, military industry, aerospace, medical treatment, agriculture and the like, and becomes one of the most promising energy storage technologies at present.
In the flywheel energy storage system, a shafting is an important device for power transmission and is also a main part of the energy self-loss of the flywheel, so that the stability, the efficiency and the service life of the flywheel system are affected.
The bearing system of the flywheel can be divided into a mechanical bearing, a contact type magnetic lifting mechanical bearing and a non-contact type magnetic suspension bearing. The friction loss of the traditional mechanical bearing is relatively large in the operation process, and the energy loss in the charging and discharging process is large and the rotating speed is relatively low by adopting the flywheel energy storage system of the mechanical bearing. The contact type magnetic lifting mechanical bearing mainly adopts a magnetic suspension technology to lift the flywheel body, and reduces the bearing capacity of the mechanical bearing, thereby improving the rotating speed of the flywheel and prolonging the service life of the bearing. Although the contact type magnetic lifting mechanical bearing also adopts the magnetic suspension technology, the contact type magnetic lifting mechanical bearing can not achieve a real non-contact magnetic suspension state, is still a mechanical bearing in essence, and still needs to bear load in the running process. Therefore, flywheel products employing contact magnetic lifting mechanical bearings have relatively low rotational speeds, typically less than 8000RPM, and still are "low speed" flywheels. More seriously, the bearings are usually replaced for 3 to 4 years, and the lubricating oil is also required to be replaced periodically in daily life, so that not only are the equipment replacement and labor cost increased, but also the on-site replacement of the bearings can face a series of problems, such as being limited by on-site space, affecting surrounding running equipment, and more supporting equipment required for disassembly, installation and detection. In addition, the flywheel must be completely stationary for bearing replacement operations, and the flywheel system must take hours to stop, start and vacuumize, which can cause significant loss to the user.
However, the cost of suspending the motor rotor is high, in general, in a magnetic suspension motor, the volume of the magnetic suspension bearing accounts for 60%, and the cost of a controller of the magnetic suspension bearing is high and complex. Magnetic levitation motors are a costly luxury and are not accessible.
Disclosure of Invention
The invention aims to provide a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor, which can lead a motor rotor to be completely suspended through radial active magnetic suspension and axial passive magnetic suspension.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor, includes the casing, its inside of casing is provided with motor stator, motor stator includes the stator core that the segmentation set up, be provided with along 180 symmetrical distribution's of circumference a plurality of pairs of windings on the motor stator, the symmetrical distribution of a plurality of pairs of windings produces 180 symmetrical couple moment, motor stator's winding slot number and motor's phase number's ratio Z/m are the even number, every winding slot's outside all is provided with the stator magnetic pole, motor stator's inside is provided with motor rotor, all be provided with the magnetic force part that the segmentation set up on the motor rotor;
the stator core is divided into three sections or more, and the magnetic force component is divided into three sections or more;
the stator core has a segment gap lambda d = (1-2) delta, wherein delta is the electromagnetic air gap of the motor, the segmented gap lambda of the magnetic part r ＝λ d The magnetic force component segmentation clearance at the two axial ends of the motor rotor is as follows: lambda (lambda) rd ＝(1.5～2)λ r ＝(1.5～2)λ d 。
The stator magnetic poles are distributed in two adjacent magnetic pole grooves;
the number of winding slots is 24, the number of stator magnetic poles is 24, the number of magnetic pole slots is 48, the number of phases of the motor is 3, and the pole pair number of the motor is 2;
each phase of the motor is provided with 4 pairs of windings, the head ends of the 4 pairs of windings are connected in parallel, and the tail ends of the 4 pairs of windings are connected in parallel to form 8 branches;
the inside of the shell is vacuum;
the magnetic force component is 4-pole magnetic steel attached to the surface of the motor rotor, and a non-magnetic metal sleeve is arranged outside the 4-pole magnetic steel;
the magnetic force component is 4-pole magnetic steel embedded into the motor rotor, and a squirrel cage winding is arranged outside the motor rotor;
the motor rotor is rotationally connected to the shell through a bearing, and a sealing ring is arranged outside the bearing.
The beneficial effects of the invention are as follows:
the inside of the shell is vacuum, the thickness of the shell is large, and the strength is high; the inside and outside of the shell are only provided with three connecting wires of the motor, and the interface is very simple, convenient and reliable;
through radial active magnetic suspension and axial passive magnetic suspension, the motor rotor can be completely and naturally suspended as long as the motor rotor rotates, so that the motor rotor has natural and natural high reliability and simplicity and has an excellent motor four-quadrant control function;
the magnetic levitation sensor is not needed, so that the magnetic levitation sensor is greatly simplified, and the functions of control performance enhancement, intelligent diagnosis and the like are enhanced;
the motor rotor has the advantages of reasonable advancement, simplicity and reliability, namely the natural advancement, simplicity and reliability, and the cost is naturally lower, and the rotating speed of the motor rotor can be improved due to the natural high reliability, and the rotating speed of the natural magnetic suspension high-speed motor rotor can exceed 2 ten thousand revolutions per minute.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of a concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor structure;
FIG. 2 is a schematic diagram of the motor rotor and magnetic steel connection structure of the present invention;
FIG. 3 is a schematic view of the winding connection structure of the present invention;
fig. 4 is a schematic diagram of the structure of the embedded magnetic steel of the motor rotor of the invention.
In the figure: a housing 1; a motor stator 2; a motor rotor 3; a winding 4; a bearing 5; a seal ring 6; a non-magnetically permeable metal sheath 7; magnetic steel 8; a squirrel cage winding 9.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the structure and function of a concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor are described in detail below;
the utility model provides a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor, includes casing 1, the inside of casing 1 is provided with motor stator 2, motor stator 2 is including the stator core that the segmentation set up, be provided with along 180 symmetrical distribution's of circumference a plurality of pairs of windings 4 on the motor stator 2, a plurality of pairs of windings 4 symmetrical distribution produce 180 symmetrical couple moment, motor stator 2's winding slot number and motor's phase number's ratio Z/m are the even, every winding slot's outside all is provided with the stator magnetic pole, motor stator 2's inside is provided with motor rotor 3, all be provided with the magnetic force part that the segmentation set up on the motor rotor 3.
The symmetrical distribution of the plurality of pairs of windings 4 generates couple moment with 180 degrees of symmetry, the ratio Z/m of the number of winding slots of the motor stator 2 and the number of phases of the motor is even, and the outer side of each winding slot is provided with a stator magnetic pole;
magnetic force is generated through stator magnetic poles arranged on the motor stator 2 and magnetic force components on the motor rotor 3, so that the motor rotor 3 is subjected to axial passive magnetic suspension;
because of the attractive force between the motor stator 2 and the motor rotor 3, in the traditional motor, the electromagnetic air gap is equal everywhere because the concentricity of the motor stator 2 and the motor rotor 3 is kept by the mechanical bearing, and the attractive force of the motor stator 2 to the motor rotor 3 is also equal everywhere; however, the fit clearance between the auxiliary bearing 5 and the motor rotor 3 is larger, the motor rotor 3 generates eccentricity in the rotating process, the motor rotor 3 generates variation of the electromagnetic air gap due to the eccentricity, the counter potential of the parallel branch on one side with the small air gap is necessarily larger, and the current is smaller; on the contrary, the counter potential of the parallel branch on the side with the large air gap is reduced, the current is increased, the radial pulling force on the side with the large air gap is increased, the radial pulling force on the side with the small air gap is reduced, the change of the air gap in the direction of reducing the deviation is necessarily caused, the deviation of the air gap is stabilized, and the motor rotor 3 has the capability of radial active magnetic suspension recovery centering after rotating;
the slot number Z=24, the pole pair number P=2, the phase number m=3, each phase has 4 pairs of 180-degree symmetrical parallel branch windings, the three phases have 12 pairs of 180-degree symmetrical parallel branch windings, and obviously, the motor rotor pair can be actively recovered from 24 directions; because the counter potential is zero when the motor is not started in an initial state without rotating, and no radial active magnetic suspension restoring force exists, the permanent magnet rotor is randomly attracted to one side with a small air gap, and therefore, when the motor is not started to rotate, the permanent magnet rotor body is radially not centered, and therefore, the auxiliary bearing 5 is needed to be used for positioning the motor rotor 3;
under the condition of not adding any sensor and controller, the motor provided by the invention has dynamic radial active magnetic suspension and axial passive magnetic suspension functions by adopting a traditional motor driving method, and has excellent motor four-quadrant control function as a permanent magnet motor naturally;
the stator core is divided into three or more sections so as to obtain larger passive magnetic levitation capacity in the axial direction, preferably 5 sections or 9 sections, and the winding 4 is not necessarily segmented along with the stator core;
the magnetic force component is divided into three or more sections so as to obtain larger passive magnetic levitation capacity in the axial direction, and preferably 5 sections or 9 sections;
the stator core has a segment gap lambda d =1 to 2 δ, where δ is the electromagnetic air gap of the motor, the segment gap λ of the magnetic part r ＝λ d The method comprises the steps of carrying out a first treatment on the surface of the The magnetic force component segmentation gaps at the two axial ends of the motor rotor 3 are as follows: lambda (lambda) rd ＝1.5～2λ r ＝1.5～2λ d ；
When λ is less than 1/4 to 1/5 times the axial length of each segment, the axial magnetic levitation stiffness is almost proportional to the number of segments n. The maximum rigidity of the segmented axial passive magnetic suspension is approximately as follows: 0.95nK (N/mm), wherein K (N/mm) is the stiffness of the single-stage axial passive magnetic levitation; however, the axial effective working range of magnetic levitation is reduced, approximately: 0.95 lambda;
as shown in fig. 3, the stator poles are distributed in two adjacent pole slots, for clarity of expression, the slot numbers may be equal, for example, the stator pole number 1 occupies the adjacent slot number 1-2, the stator pole number 2 occupies the adjacent slot number 3-4, the stator pole number 3 occupies the adjacent slot number 5-6, the stator pole number 4 occupies the adjacent slot number 7-8, and so on, and the stator pole number 24 occupies the adjacent slot number 47-48;
the number of winding slots is z=24, the number of stator poles is 24, the number of pole slots is 48, the number of phases m=3 of the motor, and the number of pole pairs p=2 of the motor;
4 pairs of windings 4 are arranged on each phase of the motor, the head ends of the 4 pairs of windings 4 are connected in parallel, the tail ends of the 4 pairs of windings 4 are connected in parallel to form 8 branches, the head end of each phase generates a port of a UVW three-phase winding, and the tail end of each phase generates a midpoint O of the UVW three-phase winding; u, V, W three-phase ports of the three-phase windings and midpoints of one three-phase winding are finally formed; namely, the special parallel branch three-phase windings which are symmetrically connected in parallel at 180 degrees are finally formed. Each phase winding of the invention has 4 pairs of 180-degree symmetrical parallel branches, and the currents in the 180-degree symmetrical parallel branches are the same in principle when the stator and rotor air gaps are not deviated;
the inside of the shell 1 is vacuum; the shell 1 seals the motor stator 2 and the motor rotor 3, the motor rotor 3 can provide momentum, the radius of the motor rotor 3 is 260mm, the height is 700mm, the rotating speed is 2 ten thousand revolutions per minute, and the maximum energy storage of the flywheel is 66862 kw.s;
as shown in fig. 2, the magnetic force component is 4-pole magnetic steel 8 attached to the surface of the motor rotor 3, and a non-magnetic metal sleeve 7 is arranged outside the 4-pole magnetic steel 8; the non-magnetic conductive metal sleeve 7 is a conductive layer which can be similar to a squirrel cage winding;
the material of the non-magnetic conductive metal sleeve 7 can be: the invention changes the non-magnetic metallic materials such as aluminum, copper, stainless steel, etc. into a synchronous motor which can be started in induction (asynchronization), the motor can be started asynchronization, and automatically enters the synchronous motor to operate after reaching the vicinity of synchronous rotating speed, and the motor really has: static and dynamic natural electromagnetic magnetic suspension motors;
as shown in fig. 4, the magnetic component is 4-pole magnetic steel 8 embedded in the motor rotor 3, and a squirrel-cage winding 9 is arranged outside the motor rotor 3; the outer circle of the motor rotor 3 is uniformly distributed with 16 squirrel cage guide bars, and of course, the axial end part of the motor rotor 3 is provided with a squirrel cage end ring, so that the motor with induction starting capability is formed; the invention is changed into a synchronous motor which can be started in an induction (asynchronous) way, the motor can be started asynchronously, and after reaching the vicinity of synchronous rotating speed, the motor automatically enters the synchronous motor to run, and the motor really has: static and dynamic natural electromagnetic magnetic suspension motors; as a permanent magnet motor, the motor of the invention has excellent motor four-quadrant control function;
the motor rotor 3 is rotationally connected to the shell 1 through the bearing 5, the fit clearance between the motor rotor 3 and the auxiliary bearing 5 is increased to 0.1 to 1mm from the traditional negative clearance, the sealing ring 6 is arranged outside the bearing 5, and although the motor rotor 3 does not rotate, the motor rotor has no radial active magnetic suspension capability, and the bearing 5 can be utilized to play an auxiliary radial support: because the motor rotation speed is zero, the bearing 5 is very little stressed, and once the motor is started, the radial active magnetic suspension of the motor immediately acts, so that the motor has the dynamic radial active magnetic suspension and the axial passive magnetic suspension functions.
Claims (10)
1. The utility model provides a concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor, includes casing (1), its characterized in that: the motor stator (2) is arranged in the shell (1), the motor stator (2) comprises stator cores which are arranged in a segmented mode, a plurality of pairs of windings (4) which are symmetrically distributed along the circumference by 180 degrees are arranged on the motor stator (2), the symmetrical distribution of the plurality of pairs of windings (4) generates couple moment which is symmetrical by 180 degrees, the ratio Z/m of the number of winding slots of the motor stator (2) to the number of phases of the motor is an even number, stator magnetic poles are arranged on the outer side of each winding slot, a motor rotor (3) is arranged in the motor stator (2), and magnetic force components which are arranged in a segmented mode are arranged on the motor rotor (3).
2. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the stator core is divided into three sections or more, and the magnetic force component is divided into three sections or more.
3. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 2 wherein: the stator core has a segment gap lambda d = (1-2) δ, where δ is the electromagnetic of the motorAir gap, segmented gap lambda of magnetic component r ＝λ d The magnetic force component segmentation gaps at the two axial ends of the motor rotor (3) are as follows: lambda (lambda) rd ＝(1.5～2)λ r ＝(1.5～2)λ d 。
4. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the stator poles are distributed in two adjacent pole slots.
5. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 4 wherein: the number of winding slots is 24, the number of stator poles is 24, the number of pole slots is 48, the number of phases of the motor is 3, and the pole pair number of the motor is 2.
6. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 5 wherein: and each phase of the motor is provided with 4 pairs of windings (4), the head ends of the 4 pairs of windings (4) are connected in parallel, and the tail ends of the 4 pairs of windings (4) are connected in parallel to form 8 branches.
7. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the interior of the shell (1) is vacuum.
8. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the magnetic force component is 4-pole magnetic steel (8) attached to the surface of the motor rotor (3), and a non-magnetic metal sleeve (7) is arranged outside the 4-pole magnetic steel (8).
9. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the magnetic force component is 4-pole magnetic steel (8) embedded into the motor rotor (3), and a squirrel-cage winding (9) is arranged outside the motor rotor (3).
10. The concentrated winding natural electromagnetic magnetic levitation energy storage flywheel motor of claim 1 wherein: the motor rotor (3) is rotationally connected to the shell (1) through a bearing (5), and a sealing ring (6) is arranged outside the bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310256190.2A CN116247854A (en) | 2023-03-16 | 2023-03-16 | Concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310256190.2A CN116247854A (en) | 2023-03-16 | 2023-03-16 | Concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor |
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| Publication Number | Publication Date |
|---|---|
| CN116247854A true CN116247854A (en) | 2023-06-09 |
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ID=86631220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310256190.2A Pending CN116247854A (en) | 2023-03-16 | 2023-03-16 | Concentrated winding natural electromagnetic magnetic suspension energy storage flywheel motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN116247854A (en) |
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2023
- 2023-03-16 CN CN202310256190.2A patent/CN116247854A/en active Pending
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