CN109347246A - A kind of vertical external rotor electric magnetic bearing flywheel energy-storage system - Google Patents
A kind of vertical external rotor electric magnetic bearing flywheel energy-storage system Download PDFInfo
- Publication number
- CN109347246A CN109347246A CN201811487176.9A CN201811487176A CN109347246A CN 109347246 A CN109347246 A CN 109347246A CN 201811487176 A CN201811487176 A CN 201811487176A CN 109347246 A CN109347246 A CN 109347246A
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- flywheel
- bearing
- magnetic bearing
- rotary body
- external rotor
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- 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
-
- 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
- H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
-
- 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
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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)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
A kind of vertical external rotor electric magnetic bearing flywheel energy-storage system, belongs to Flywheel energy storage technique field.The present invention solves the axial length of flywheel rotor existing for existing flywheel energy storage system, it influences rotor dynamic mechanical characteristic and will lead to the not good enough problem of flywheel energy storage system structural compactness, thrust magnetic bearing, upper auxiliary bearing, upper radial magnetic bearing, external rotor permanent magnet synchronous machine, lower radial magnetic bearing and lower auxiliary bearing of the invention is from top to bottom sequentially arranged on mandrel, and upper radial magnetic bearing, lower radial magnetic bearing and flywheel rotary body inner wall are in contactless state；The top and bottom of flywheel rotary body and upper auxiliary bearing and lower auxiliary bearing are in clearance fit state；Thrust magnetic bearing is placed in above flywheel rotary body, and there are gaps between the upper surface of flywheel rotary body；External rotor permanent magnet synchronous machine is placed in flywheel a rotating body, and drives the rotation of flywheel rotary body.Rotor-support-foundation system of the present invention is compact-sized, promotes rotor dynamics.
Description
Technical field
The present invention relates to a kind of flywheel energy storage systems, and in particular to a kind of vertical external rotor electric magnetic bearing flywheel energy storage system
System, belongs to Flywheel energy storage technique field.
Background technique
Flywheel energy storage system as one can flexible modulation active source, be actively engaged in the dynamic behaviour of system, and can be
The of short duration state transient process of Eliminating disturbance retraction, makes system restore stable state rapidly.Flywheel energy storage system mainly by flywheel rotor,
The composition such as bearing, integrated electric/power generation mutual-inverse type either-rotation motor, electronic power converter.Integrated electric/power generation mutual-inverse type
Either-rotation motor realizes that electric energy and high speed flywheel mechanical energy are converted.Electric energy accelerates energy storage by electric power converter driving motor, flywheel；
Later, the constant operating of motor can control signal until receiving to release；Energy is released in the power generation of high speed flywheel dragging motor, and converted device output is suitable
In the electric current and voltage of load.
To store more energy, reduce system loss, flywheel rotor needs to have biggish rotary inertia, and in vacuum ring
High rotation speed operation is under border.As a kind of electromechanical integration energy storing devices for integrating the technologies such as machinery, control, electronics,
Flywheel energy storage system there is also many technical problems for restricting its engineering application, mainly finds expression in the choosing of suspension bearing system at present
Type, integrated electric/generator performance and control etc..If flywheel energy storage system takes installation inner rotor motor, and using more
A magnetic suspension bearing bearing, it will usually which the axial length for increasing flywheel rotor influences rotor dynamic mechanical characteristic and will lead to winged
It is not good enough to take turns energy-storage system structural compactness.
Summary of the invention
It has been given below about brief overview of the invention, in order to provide about the basic of certain aspects of the invention
Understand.It should be appreciated that this summary is not an exhaustive overview of the invention.It is not intended to determine pass of the invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form,
Taking this as a prelude to a more detailed description discussed later.
In consideration of it, the present invention influences to solve the axial length of flywheel rotor existing for existing flywheel energy storage system
Rotor dynamic mechanical characteristic simultaneously will lead to the not good enough problem of flywheel energy storage system structural compactness, and then devise a kind of vertical outer
Rotor electromagnetic bearing flywheel energy storage system, the system use the Permanent-magnet bearing and external rotor electric magnetic axis of external rotor permanent magnet synchronous machine
Hold mixing bearing.
Scheme adopted by the present invention are as follows: a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system, including energy storage
Transform portion, rotor bearing part and slave part；
Wherein, energy storage transform portion includes flywheel rotary body and external rotor permanent magnet synchronous machine；Rotor bearing part
Including upper radial magnetic bearing, lower radial magnetic bearing, upper auxiliary bearing, lower auxiliary bearing and thrust magnetic bearing；Assisted parts
Divide includes shell and mandrel；
Wherein, the mandrel and flywheel rotary body are mounted in shell, and enclosure interior keeps vacuum state；The permanent magnetism pushes away
Power bearing, upper auxiliary bearing, upper radial magnetic bearing, external rotor permanent magnet synchronous machine, lower radial magnetic bearing and lower asessory shaft
It holds and is installed on mandrel, and from top to bottom successively arrange along axial direction；Upper auxiliary bearing, lower auxiliary bearing, upper radial electromagnetic axis
The stator coil held, the stator coil of lower radial magnetic bearing, the inner stator of external rotor permanent magnet synchronous machine are fixedly arranged at
On mandrel；The upper radial magnetic bearing, lower radial magnetic bearing be arranged inside flywheel rotary body and with flywheel rotary body
Inner wall is in contactless state；The top and bottom of flywheel rotary body are established by upper auxiliary bearing and lower auxiliary bearing and mandrel to be connected
It connects, and is in clearance fit state with upper auxiliary bearing and lower auxiliary bearing；The thrust magnetic bearing is placed on flywheel rotary body
Side, and there are gaps between the upper surface of flywheel rotary body；The external rotor permanent magnet synchronous machine is placed in flywheel a rotating body, and
Drive the rotation of flywheel rotary body.
Further: the flywheel rotary body includes flywheel, flywheel upper end cover and flywheel lower cover, the installation of flywheel upper and lower side
There are flywheel upper end cover and flywheel lower cover, flywheel upper end cover and upper auxiliary bearing clearance fit, flywheel lower cover and lower asessory shaft
Hold clearance fit.
Further: the flywheel rotary body is steel alloy flywheel rotary body.
Further: the gap between the upper radial magnetic bearing, lower radial magnetic bearing and flywheel rotary body inner wall
For 0.5~1mm.So set, flywheel rotary body is controlled by electromagnetic force, contacts with each other with bearing without radial, is in suspended state,
Mechanical friction abrasion is greatly reduced, radial support and active control are carried out to flywheel rotary body, can guarantee that bearing supports well
Stability.
Further: the gap between the top and bottom of the flywheel rotary body and upper auxiliary bearing and lower auxiliary bearing
For 0.1~0.5mm.So set, flywheel rotary body is controlled by electromagnetic force, contacts with each other with bearing without axial, be in suspension
State greatly reduces mechanical friction abrasion.
Further: being embedded in permanent magnet in the thrust magnetic bearing.So set, can be carried out to flywheel rotary body axial
Unloading.
Further: the gap between the thrust magnetic bearing and the upper surface of flywheel rotary body is 0.5~1mm.Such as
This setting, flywheel rotary body are controlled by magnetic force, are contacted with each other with thrust magnetic bearing without axial, are in suspended state, greatly subtract
Few mechanical friction abrasion, and thrust magnetic bearing is that flywheel rotor carries out axial unloading, and it is axially negative can greatly to mitigate electromagnetic bearing
It carries.
Further: the electric motor internal stator of the external rotor permanent magnet synchronous machine is wound around coil, and external rotor permanent magnet is synchronous
The motor outer rotor of motor is SmCo permanent magnet.
Further: upper fixed hub is set between the upper surface and upper radial magnetic bearing of the SmCo permanent magnet；Institute
It states and lower fixed hub is set between the lower end surface of SmCo permanent magnet and lower radial magnetic bearing.So set, permanent magnet upper and lower side
Face is constrained by fixed hub and is fastened, and permanent magnetism external surface is by flywheel a rotating body surface protection.
Further: the upper radial magnetic bearing is identical as lower radial magnetic bearing structure, is all made of outer-rotor structure,
Including stator coil and the silicon steel sheet rotor being placed in outside stator coil, stator coil is the inner stator of electromagnetic bearing, is fixed not
Rotation, there are gaps between stator coil and silicon steel sheet rotor.It is designed in this way, it is tight that outer rotor Active Magnetic Bearing facilitates structure
Gathering design.
Further: the upper auxiliary bearing and lower auxiliary bearing use rolling bearing.The outer ring axial face of rolling bearing
With outer radial surface respectively at flywheel upper end cover and flywheel lower cover there are gap, which is less than stator coil and silicon steel sheet turns
Gap between son.The inner ring of upper auxiliary bearing and lower auxiliary bearing is fixed, when rotor falls or needs repairing, asessory shaft
Bearing outer-ring bears rotor strike, and rotor is avoided to contact with electromagnetic bearing.
Further: the shell includes shell upper end cover, housing central section and housing base, and three from top to bottom passes through spiral shell
Bolt is connected, and enclosure interior keeps vacuum state, and vacuum degree is at least 0.1Pa.Vacuum environment can effectively reduce high speed rotor and turn
Windage when dynamic reduces friction when rotor rotation, mechanical loss is effectively reduced, improves energy storage efficiency.
Present invention effect achieved are as follows:
The present invention selects external rotor permanent magnet synchronous machine as integrated electric/power generation mutual-inverse type either-rotation motor, can make to turn
Subsystem structure is compact, promotes rotor dynamics.Meanwhile flywheel is played a certain protective role also for permanent magnetic tile.
Forced water cooling mode may be selected in electric motor internal stator radiating mode.Flywheel rotor is carried out using novel external rotor Active Magnetic Bearing
Radial support and active control, Permanent-magnet bearing are that flywheel rotor carries out axial unloading, it is ensured that the stability of bearing bearing is reduced
Friction reduces vibration, and further compact systems spatial constructional dimensions, is conducive to system compact design.
Specifically: flywheel energy storage system of the invention utilizes upper radial magnetic bearing, lower radial magnetic bearing, upper asessory shaft
It holds, lower auxiliary bearing and thrust magnetic bearing are by the contactless suspension of flywheel rotary body, the axial displacement of flywheel rotary body, radial position
It moves and is controlled around the rotation of horizontal plane x-axis and y-axis by upper radial magnetic bearing and lower radial magnetic bearing, and flywheel rotates
The axial-rotation of body is controlled by external rotor permanent magnet synchronous machine.It is designed in this way, flywheel rotary body is in space under contactless state
It realizes high speed rotation, is in the full suspended state of friction free, can well avoid high speed rotor frictional dissipation, and vacuum environment can
Effectively reduce windage loss.External rotor permanent magnet synchronous machine is installed on inside flywheel rotary body, in contrast to electric in inner rotor motor system
Machine and flywheel cascaded structure, considerably reduce axle-system axial size, compact-sized, reduce rotor oscillation.Upper auxiliary bearing and
Lower auxiliary bearing provides interim aiding support for rotor, prevents thrashing, and rotor falls to be collided with electromagnetic bearing, rises for rotor
To the effect of limit and protection.
Detailed description of the invention
Fig. 1 is a kind of structure chart of vertical external rotor electric magnetic bearing flywheel energy-storage system of the invention；
Fig. 2 is the structure chart of external rotor permanent magnet synchronous machine；
Fig. 3 is radial magnetic bearing structure chart；
Fig. 4 is upper auxiliary bearing structure diagram；
Fig. 5 is lower auxiliary bearing structure diagram.
In figure:
1- flywheel；2- flywheel upper end cover；3- flywheel lower cover；The upper radial magnetic bearing of 4-；Radial magnetic bearing under 5-；6-
External rotor permanent magnet synchronous machine；7- permanent magnet；The upper auxiliary bearing of 8-；Auxiliary bearing under 9-；10- mandrel；The first axle sleeve of 11-；12-
Second axle sleeve；13- third axle sleeve；14 the 4th axle sleeves；The upper fixed hub of 15-, fixed hub under 16-；17- thrust magnetic bearing；
18- shell upper end cover；19- housing central section；20- housing base；21- electric motor internal stator；22- motor outer rotor；23- stator line
Circle；24- silicon steel sheet rotor.
Specific embodiment
For clarity and conciseness, all features of actual implementation mode are not described in the description.However, should
Understand, much decisions specific to embodiment must be made, during developing any this practical embodiments so as to reality
The objectives of existing developer, for example, meeting restrictive condition those of related to system and business, and these restrictive conditions
It may be changed with the difference of embodiment.In addition, it will also be appreciated that although development is likely to be very multiple
It is miscellaneous and time-consuming, but for the those skilled in the art for having benefited from the disclosure of invention, this development is only example
Capable task.
Here, also it should be noted is that, in order to avoid having obscured the present invention because of unnecessary details, applying for text
Illustrate only in part with closely related apparatus structure and/or processing step according to the solution of the present invention, and be omitted and this
The little other details of inventive relationship.
Embodiment: referring to Fig. 1 to Fig. 5, the vertical external rotor electric magnetic bearing flywheel energy-storage system of one of the present embodiment, packet
Include energy storage transform portion, rotor bearing part and slave part；Wherein, energy storage transform portion includes: flywheel rotation
Body, integrated electric/power generation mutual-inverse type either-rotation motor；Rotator abutment point includes: upper radial magnetic bearing 4, lower radial electromagnetism
Bearing 5, thrust magnetic bearing 17, upper auxiliary bearing 8, lower auxiliary bearing 9；Slave part includes: shell and mandrel 10.
Wherein, integrated electric/power generation mutual-inverse type either-rotation motor selects external rotor permanent magnet synchronous machine 6, permanent magnetism thrust axis
Hold 17, upper auxiliary bearing 8, upper radial magnetic bearing 4, external rotor permanent magnet synchronous machine 6, lower radial magnetic bearing 5, lower asessory shaft
It holds 9 to be mounted on mandrel 10, successively arrange from top to bottom in axial direction.
Upper auxiliary bearing 8, lower auxiliary bearing 9, upper radial magnetic bearing 4 stator coil, lower radial magnetic bearing 5 determines
Subcoil, external rotor permanent magnet synchronous machine 6 inner stator be fixedly arranged on mandrel 10.Enclosure interior keeps vacuum state.
Above-mentioned flywheel energy storage system using radial magnetic bearing and thrust magnetic bearing by the contactless suspension of flywheel rotary body,
High speed rotor frictional dissipation can be well avoided, and vacuum environment can effectively reduce windage loss.
Flywheel rotary body material is steel alloy, and flywheel 1 is connected with flywheel upper end cover 2, flywheel lower cover 3 by bolt
Connect, the axial displacement of flywheel rotary body, radial displacement and around horizontal plane x-axis and y-axis rotation by upper radial magnetic bearing 4,
Lower radial magnetic bearing 5 is controlled, and its axial-rotation is controlled by external rotor permanent magnet synchronous machine 6.
It is embedded in permanent magnet 7 in thrust magnetic bearing 17, axial unloading can be carried out to flywheel rotary body.Thrust magnetic bearing 17
There are minim gaps between flywheel rotary body, are not in contact with each other.Meanwhile upper radial magnetic bearing 4 and lower radial magnetic bearing 5
Radial support and active control are carried out to flywheel 1, can well guarantee the stability of bearing bearing.Flywheel rotary body is pushed away by permanent magnetism
The bearing of power bearing and upper radial magnetic bearing 4, lower radial magnetic bearing 5 can be realized under contactless state high in space
Speed rotation, is in the full suspended state of friction free.
Integrated electric/power generation mutual-inverse type either-rotation motor selection selection external rotor permanent magnet synchronous machine 6.External rotor permanent magnet is same
Walk the core component that motor 6 is electric energy conversion.When energy storage, electric energy drives flywheel to add by electric power converter driving motor, motor
Speed rotation, the machinery that electric energy is converted into flywheel can be carried out energy storage；The constant operating of motor later can control signal until receiving to release；It releases
When energy, the power generation of high speed flywheel dragging motor is suitable for the electric current and voltage of load through electric power converter output.
The first axle sleeve 11, upper auxiliary bearing 8 and upper diameter are provided between the upper auxiliary bearing 8 and thrust magnetic bearing 17
To the second axle sleeve 12 is provided between electromagnetic bearing 4, it is arranged between external rotor permanent magnet synchronous machine 6 and upper radial magnetic bearing 4
There is third axle sleeve 13, is provided with the 4th axle sleeve 14 between lower radial magnetic bearing 5 and lower auxiliary bearing 9.
External rotor permanent magnet synchronous machine 6 uses outer-rotor structure form (Fig. 2), and motor can be installed on to flywheel rotating body
Inside greatly reduces axle-system axial size, compact-sized, improves rotor dynamics, reduces rotor oscillation.Wherein, 21 are
Electric motor internal stator is wound around coil；22 be motor outer rotor, is permanent magnet S mCo.The upper surface of the SmCo permanent magnet
Upper fixed hub 15 is set between upper radial magnetic bearing 4；The lower end surface of the SmCo permanent magnet and lower radial magnetic bearing 5
Between lower fixed hub 16 is set.
Upper radial magnetic bearing 4 and lower 5 structure of radial magnetic bearing are as shown in figure 3, this electromagnetic bearing takes outer rotor knot
Structure design.Silicon steel sheet rotor is placed on the outside of electromagnetic bearing, and inner coil stator maintains static dynamic.Wherein, 23 be stator coil；
24 be silicon steel sheet rotor.There are micro gaps between stator coil 23 and silicon steel sheet rotor 24.External rotor radial electromagnetic bearing has
Help compact-sizedization design.
Meanwhile auxiliary bearing 8 and lower auxiliary bearing 9 are installed respectively in the upper/lower terminal of flywheel rotary body, it is mentioned for rotor
It for interim aiding support, prevents thrashing rotor from falling and is collided with electromagnetic bearing, play the role of limit and protection for rotor.
Upper auxiliary bearing 8 and lower auxiliary bearing 9 are respectively as shown in Fig. 4 and 5.Upper auxiliary bearing 8 and the selection of lower auxiliary bearing 9
Rolling bearing.There are small with flywheel upper end cover 2 and flywheel lower cover 3 respectively with outer radial surface for housing washer axial face
Gap, and the gap is less than the gap between stator coil 23 and silicon steel sheet rotor 24.Auxiliary bearing inner ring is fixed, when rotor falls
When falling or needing repairing, rotor strike is born in auxiliary bearing outer ring, and rotor is avoided to contact with electromagnetic bearing.
To reduce windage friction when flywheel rotor high speed rotation, system capacity transfer efficiency, system casing is effectively ensured
It inside needs to keep vacuum state.Shell is made of shell upper end cover 18, housing central section 19 and housing base 20, is led to from each other
Bolt is crossed to be connected.
Although disclosed embodiment is as above, its content is only to facilitate understand technical side of the invention
Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not
Under the premise of being detached from disclosed core technology scheme, any modification and change can be made in form and details in implementation
Change, but protection scope defined by the present invention, the range that the appended claims that must still be subject to limits.
Claims (10)
1. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system, including energy storage transform portion, rotor bearing part and
Slave part；
It is characterized by: the energy storage transform portion includes flywheel rotary body and external rotor permanent magnet synchronous machine (6)；Rotor
Supporting part include upper radial magnetic bearing (4), lower radial magnetic bearing (5), upper auxiliary bearing (8), lower auxiliary bearing (9) and
Thrust magnetic bearing (17)；Slave part includes shell and mandrel (10)；
Wherein, the mandrel (10) and flywheel rotary body are mounted in shell, and enclosure interior keeps vacuum state；The permanent magnetism pushes away
Power bearing (17), upper auxiliary bearing (8), upper radial magnetic bearing (4), external rotor permanent magnet synchronous machine (6), lower radial electromagnetic axis
It holds (5) and lower auxiliary bearing (9) is installed on mandrel (10), and from top to bottom successively arrange along axial direction；Upper auxiliary bearing
(8), lower auxiliary bearing (9), upper radial magnetic bearing (4) stator coil, it is the stator coil of lower radial magnetic bearing (5), outer
The inner stator of rotor permanent magnet synchronous motor (6) is fixedly arranged on mandrel (10)；The upper radial magnetic bearing (4), lower diameter
It is arranged inside flywheel rotary body to electromagnetic bearing (5) and with flywheel rotary body inner wall in contactless state；Flywheel rotary body
Top and bottom establish connection by upper auxiliary bearing (8) and lower auxiliary bearing (9) and mandrel (10), and with upper auxiliary bearing
(8) and lower auxiliary bearing (9) is in clearance fit state；The thrust magnetic bearing (17) is placed in above flywheel rotary body, and with
There are gaps between the upper surface of flywheel rotary body；The external rotor permanent magnet synchronous machine (6) is placed in flywheel a rotating body, and drives
The rotation of flywheel rotary body.
2. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 1, it is characterised in that: described to fly
Taking turns rotary body includes flywheel (1), flywheel upper end cover (2) and flywheel lower cover (3), and flywheel (1) upper and lower side is equipped with flywheel upper end
(2) and flywheel lower cover (3), flywheel upper end cover (2) and upper auxiliary bearing (8) clearance fit are covered, flywheel lower cover (3) is auxiliary under
Help bearing (9) clearance fit.
3. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 2, it is characterised in that: on described
Gap between radial magnetic bearing (4), lower radial magnetic bearing (5) and flywheel rotary body inner wall is 0.5~1mm.
4. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 3, it is characterised in that: described to fly
Taking turns the gap between the top and bottom and upper auxiliary bearing (8) and lower auxiliary bearing (9) of rotary body is 0.1~0.5mm.
5. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 4, it is characterised in that: it is described forever
Permanent magnet (7) are embedded in magnetic thrust bearing (17).
6. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 5, it is characterised in that: it is described forever
Gap between magnetic thrust bearing (17) and the upper surface of flywheel rotary body is 0.5~1mm.
7. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 6, it is characterised in that: described outer
The electric motor internal stator (21) of rotor permanent magnet synchronous motor (6) is wound around coil, is turned outside the motor of external rotor permanent magnet synchronous machine (6)
Sub (22) are SmCo permanent magnet.
8. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 7, it is characterised in that: described
It is arranged between the upper surface of SmCo permanent magnet and upper radial magnetic bearing (4) upper fixed hub (15)；The SmCo permanent magnet
Lower fixed hub (16) are set between lower end surface and lower radial magnetic bearing (5).
9. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 8, it is characterised in that: on described
Radial magnetic bearing (4) is identical as lower radial magnetic bearing (5) structure, is all made of outer-rotor structure, including stator coil and sets
In the external silicon steel sheet rotor (24) of stator coil (23), stator coil (23) is the inner stator of electromagnetic bearing, maintain static it is dynamic,
There are gaps between stator coil 23 and silicon steel sheet rotor (24).
10. a kind of vertical external rotor electric magnetic bearing flywheel energy-storage system according to claim 9, it is characterised in that: described
Shell includes shell upper end cover (18), housing central section (19) and housing base (20), and three is from top to bottom connected by bolt,
Enclosure interior keeps vacuum state, and vacuum degree is at least 0.1Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487176.9A CN109347246B (en) | 2018-12-06 | 2018-12-06 | Flywheel energy storage system with vertical outer rotor electromagnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487176.9A CN109347246B (en) | 2018-12-06 | 2018-12-06 | Flywheel energy storage system with vertical outer rotor electromagnetic bearing |
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| CN109347246A true CN109347246A (en) | 2019-02-15 |
| CN109347246B CN109347246B (en) | 2023-09-22 |
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| CN112054626A (en) * | 2020-09-25 | 2020-12-08 | 核工业理化工程研究院 | Vertical rotor active control over-critical test device |
| CN112197103A (en) * | 2020-09-29 | 2021-01-08 | 中国航发湖南动力机械研究所 | High-speed flywheel shell structure |
| CN113037001A (en) * | 2021-02-22 | 2021-06-25 | 江苏大学 | Flywheel energy storage device based on outer rotor bearingless permanent magnet synchronous motor |
| CN114257033A (en) * | 2021-12-31 | 2022-03-29 | 中磁动力设备(深圳)有限公司 | Energy storage motor and use method |
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| CN110011508A (en) * | 2019-04-10 | 2019-07-12 | 蚁人(苏州)机械科技有限公司 | Wear-resistant anticorrosive under-water DC brushless motor |
| CN112054626A (en) * | 2020-09-25 | 2020-12-08 | 核工业理化工程研究院 | Vertical rotor active control over-critical test device |
| CN112054626B (en) * | 2020-09-25 | 2024-05-28 | 核工业理化工程研究院 | Active control supercritical test device for vertical rotor |
| CN112197103A (en) * | 2020-09-29 | 2021-01-08 | 中国航发湖南动力机械研究所 | High-speed flywheel shell structure |
| CN112197103B (en) * | 2020-09-29 | 2022-07-08 | 中国航发湖南动力机械研究所 | High-speed flywheel shell structure |
| CN113037001A (en) * | 2021-02-22 | 2021-06-25 | 江苏大学 | Flywheel energy storage device based on outer rotor bearingless permanent magnet synchronous motor |
| CN114257033A (en) * | 2021-12-31 | 2022-03-29 | 中磁动力设备(深圳)有限公司 | Energy storage motor and use method |
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| CN109347246B (en) | 2023-09-22 |
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