CN102594008A - Energy storage device of vacuum super-conducting magnetic suspension integrated flywheel - Google Patents
Energy storage device of vacuum super-conducting magnetic suspension integrated flywheel Download PDFInfo
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- CN102594008A CN102594008A CN2012100572092A CN201210057209A CN102594008A CN 102594008 A CN102594008 A CN 102594008A CN 2012100572092 A CN2012100572092 A CN 2012100572092A CN 201210057209 A CN201210057209 A CN 201210057209A CN 102594008 A CN102594008 A CN 102594008A
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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
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- 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
Abstract
The invention discloses an energy storage device of a vacuum super-conducting magnetic suspension integrated flywheel and relates to the field of energy storage of a flywheel. The device comprises a base, a bracket, a stepper motor, a vacuum cover, a vacuum cavity, a lead rail, a cooling device, a direct current brushless motor stator, an integrated flywheel rotor and a high-temperature super-conducting block; wherein the stepper motor, the lead rail and the cooling device are fixed on the base; the stepper motor and the lead rail are connected with the vacuum cavity and can control the field cooling height of a high-temperature super-conducting magnetic suspension bearing and the gap of a direct current brushless motor; the direct current brushless motor stator is fixed at the inner part of the vacuum cavity; the integrated flywheel rotor is arranged in a coaxial groove inside the vacuum cavity, and the high-temperature super-conducting block is arranged inside the cooling device and can be refrigerated by pouring liquid nitrogen into the cooling device. The energy storage device of the vacuum super-conducting magnetic suspension integrated flywheel has the advantages of being simple in structure and easy in operation; the rotation loss of the flywheel can be reduced by adopting the super-conducting magnetic suspension bearing; the energy consumption is reduced; the brushless motor is utilized as a drive, and the flywheel rotor adopts a shaftless design so as to reduce the motor loss.
Description
Technical field
The present invention relates to the flywheel energy storage field, relate in particular to the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension.
Background technology
Flywheel energy storage is a kind of new mechanical energy storage mode; With batteries to store energy relatively, flywheel energy storage has the energy storage density height, discharges and recharges often, the life-span is long, efficient is high, volume is little, working range is wide, non-environmental-pollution, can obtain bigger advantages such as power peak.Present stage, the flywheel energy storage supporting mechanism remained in some problems, and as adopting the flywheel energy storage mode of mechanical bearing, frictional force is bigger, and loss is more, and conversion efficiency is lower; Adopt the flywheel energy storage mode of electromagnetic suspension bearing to require control system comparatively complicated, and the control consumed energy, efficient reduces.
Summary of the invention
Cause bigger loss, the present invention to adopt hts magnetic levitation bearing supporting mechanism as flywheel owing to rub in order to overcome existing flywheel energy storage when the high speed rotating, design the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension.
The technical scheme that technical solution problem of the present invention is taked is following:
The integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension comprises base, support, stepping motor, vacuum cover, vacuum cavity, guide rail, cooling device, dc brushless motor stator, integrated flywheel rotor and hts bulk; Support and guide rail are fixed on the base, and stepping motor is fixed on the support; Vacuum cover and vacuum cavity connect and compose vacuum system through screw, and vacuum cover is provided with electrical interface and vacuum interface; Vacuum cavity is connected with vacuum pump through vacuum interface and vacuumizes, and is connected with power supply and controls integrated flywheel rotor and rotate through electrical interface, and simultaneously, vacuum cavity is done lifting moving by step motor drive along guide rail; The dc brushless motor stator is fixed on vacuum cavity inside, and integrated flywheel rotor is placed in the inner concentric grooves of vacuum cavity, and and the dc brushless motor stator between the space is arranged; Cooling device is fixed on the base, and hts bulk is fixed in the cooling device, and liquid nitrogen is housed in the cooling device.
Operation principle of the present invention is following:
During energy storage work; Move up and down through stepping motor and guide rail control vacuum cavity; Elder generation's control step motor and guide rail drive vacuum cavity and move up, and guarantee the cold height in field between integrated flywheel rotor and the hts bulk, make when hts bulk gets into superconducting state; The superconducting bearing rotor has bigger bearing rigidity, and what the assurance flywheel rotor can be passive is suspended in the vacuum system.
In cooling device, pour liquid nitrogen into, make the hts bulk that is fixed in the cooling device get into superconducting state, utilize the flux pinning characteristic and the Meisser effect of high-temperature superconductor, catch the magnetic field that permanent magnet produces in the integrated flywheel rotor, form stable suspension.
The dc brushless motor stator is fixed on vacuum cavity inside, drives vacuum cavity through stepping motor and guide rail and moves down, and then guarantee the motor gap between dc brushless motor and the integrated flywheel rotor.
Connect the vacuum state that vacuum pump guarantees vacuum cavity through the vacuum interface on the vacuum cover, give the energising of dc brushless motor stator through the electrical interface on the vacuum cover, dc brushless motor drives integrated flywheel rotor high speed rotating.
After flywheel accelerates to certain speed, break off the brushless electric machine power supply, flywheel rotor stops to quicken, and is in suspension for no reason at all, does not have the machinery rotation of sustainable long period of friction, and then realizes the flywheel mechanical energy storage.
When releasing energy, power line is connected in the load, this moment, brushless electric machine can be used as generator, and the mechanical energy that flywheel is stored converts electric energy into and externally exports.
Beneficial effect of the present invention is following:
1) the present invention adopts the super-conductive magnetic suspension can be so that the passive suspension of flywheel rotor in a vacuum, does not have friction at a high speed as the supporting mechanism of flywheel accumulator, and energy loss is little, makes flywheel energy storage efficient improve.
2) the present invention adopts the plane dc brushless motor as drive unit; Dc brushless motor adopts slotless, the no core structure of stator winding; Electromagnetic torque pulsation that causes by slot effect and many drawbacks of bringing by iron core have been reduced effectively; Make motor quality reduce, avoided magnetic hysteresis and eddy current loss and the operational efficiency that improved.
3) the present invention adopts integrated flywheel rotor, and rotor, flywheel rotor and super-conductive magnetic suspension bearing rotor are integrated, and the design of no axiation is simple in structure, can be so that the passive suspension of flywheel rotor, and high speed rotating.
4) vacuum cavity of the present invention can guarantee that flywheel rotor does not have the rotation of air drag at a high speed under vacuum, and vacuum cavity can guarantee the cold height in field of super-conductive magnetic suspension flywheel rotor and the gap of plane brushless electric machine through stepping motor.
Description of drawings
Fig. 1 is the structural representation of the integrated energy accumulation device for fly wheel of superconducting magnetic suspension of the present invention.
Fig. 2 is the cutaway view of the integrated energy accumulation device for fly wheel of superconducting magnetic suspension of the present invention.
Fig. 3 is the structural representation of the integrated flywheel rotor among the present invention.
Fig. 4 is the axial sound view of Fig. 3.
Fig. 5 is the coil plane sketch map of the dc brushless motor stator among the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
As depicted in figs. 1 and 2, the integrated energy accumulation device for fly wheel of superconducting magnetic suspension of the present invention comprises: base 1, support 2, stepping motor 3, vacuum cover 6, vacuum cavity 7, guide rail 8, cooling device 9, dc brushless motor stator 10, integrated flywheel rotor 11 and hts bulk 12.Support 2 supports stepping motor 3, is fixed in the lump on the base 1 with guide rail 8; Vacuum cavity 7 and vacuum cover 6 connect and compose vacuum system through screw; Vacuum cavity 7 is connected with vacuum pump through vacuum interface on the vacuum cover 65 and vacuumizes; Be connected with power supply and control integrated flywheel rotor 11 through the electrical interface on the vacuum cover 64; Vacuum cavity 7 drives through stepping motor 3, does lifting moving along guide rail 8; Dc brushless motor stator 10 is fixed on vacuum cavity 7 inside, and integrated flywheel rotor 11 is placed in the concentric grooves of vacuum cavity 7 inside, and keeps certain distances with dc brushless motor stator 10; Cooling device 9 is fixed on the base 1, and hts bulk 12 is fixed in the cooling device 9, and cooling device 9 can make hts bulk 12 get into superconducting state through liquid nitrogen 13 refrigeration.
As shown in Figure 3, integrated flywheel rotor 11 comprises rotor 14, flywheel rotor 15 and superconducting bearing rotor 16 coaxial and that be fixedly connected sequentially, and wherein, rotor 14 is by 6 pairs of NS magnetic poles, and axial charging adopts the NdFeB material; Flywheel rotor 15 forms magnetic screen by the pure iron manufacturing; Superconducting bearing rotor 16 is made up of a ringshaped magnet and cylindrical magnet, and the two NS is alternate, and axial charging forms magnetic suspension with following hts bulk 12 interactions.Superconducting bearing rotor 16 adopts the NdFeB material.
As shown in Figure 4; The structure of dc brushless motor stator 10 is to be made by inexpensive PCB plate processes; Two-layer totally 36 coils of stator obverse and reverse, coil is connected to form Y type three through node and is connected, through simultaneously add three Hall elements at stator coil; Realize the current transitions between the three-phase DC motor, and through the Hall element accurate location with integrated flywheel rotor 11 positions of realizing testing the speed.
During the integrated energy accumulation device for fly wheel energy storage of superconducting magnetic suspension of the present invention; Earlier drive vacuum cavities 7 3mm that moves up through stepping motor 3 and guide rail 8; Guarantee the cold height 5mm in field of hts bulk 12; Pour liquid nitrogen 13 into to cooling device 9 and make hts bulk 12 coolings get into superconducting state, integrated flywheel rotor 11 is because the flux pinning effect of super-conductive magnetic suspension bearing is constant with the holding position; Drive vacuum cavity 7 through stepping motor 3 with guide rail 8 then and move down 3mm; And then realize vacuumizing the motor gap 1mm between dc brushless motor stator 10 and the integrated flywheel rotor 11 and control dc brushless motor through the electrical interface on the vacuum cover 64 and 5 pairs of vacuum cavities 7 of vacuum interface and drive rotor acceleration rotation, electric energy is converted into mechanical energy.
Only need the external world be controlled power supply during storage and break off, integrated flywheel rotor 11 will be at high speed rotating under the vacuum system, and energy will be with the stores of mechanical energy.When the needs energy, only need extraneous load be connected on the power line and can externally discharge, the mechanical energy of flywheel energy storage is converted into electric energy.
The present invention utilizes high-temperature superconducting magnetic levitation unique diamagnetism and flux pinning effect, can realize passive being suspended in above the high-temperature superconductor of permanent magnet, and the holding position is constant.Because this attributes of high-temperature superconductor, it is applied to high-temperature superconducting maglev train, magnetic bearing, flywheel energy storage system etc.The magnetic suspension bearing of high-temperature superconductor manufacturing is applied to fly wheel system, can realize the contactless suspension of flywheel rotor, makes fly wheel system have lower frictional dissipation, and the mechanical energy of flywheel is stored under vacuum system for a long time.
Claims (5)
1. integrated energy accumulation device for fly wheel of superconducting magnetic suspension; It is characterized in that this device comprises base (1), support (2), stepping motor (3), vacuum cover (6), vacuum cavity (7), guide rail (8), cooling device (9), dc brushless motor stator (10), integrated flywheel rotor (11) and hts bulk (12); Support (2) and guide rail (8) are fixed on the base (1), and stepping motor (3) is fixed on the support (2); Vacuum cover (6) and vacuum cavity (7) connect and compose vacuum system through screw, and vacuum cover (6) is provided with electrical interface (4) and vacuum interface (5); Vacuum cavity (7) is connected with vacuum pump through vacuum interface (5) and vacuumizes, and is connected with power supply and controls integrated flywheel rotor (11) and rotate through electrical interface (4), and simultaneously, vacuum cavity (7) is driven by stepping motor (3) and does lifting moving along guide rail (8); Dc brushless motor stator (10) is fixed on vacuum cavity (7) inside, and integrated flywheel rotor (11) is placed in the inner concentric grooves of vacuum cavity (7), and and dc brushless motor stator (10) between the space is arranged; Cooling device (9) is fixed on the base (1), and hts bulk (12) is fixed in the cooling device (9), and liquid nitrogen (13) is housed in the cooling device (9).
2. the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension as claimed in claim 1; It is characterized in that; Described integrated flywheel rotor (11) comprises rotor (14), flywheel rotor (15) and superconducting bearing rotor (16); Rotor (14) is fixedly connected with flywheel rotor (15), and flywheel rotor (15) is fixedly connected with superconducting bearing rotor (16).
3. the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension as claimed in claim 2; It is characterized in that; Said rotor (14) is by six pairs of NS magnetic poles, axial chargings and adopts the NdFeB material that flywheel rotor (15) is made by pure iron, forms magnetic screen; Superconducting bearing rotor (16) is made up of a ringshaped magnet and cylindrical magnet, and the two NS is alternate, and axial charging adopts the NdFeB material.
4. the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension as claimed in claim 1; It is characterized in that; Described dc brushless motor stator (10) is to select for use the pcb board processes to make, two-layer totally 36 coils of stator obverse and reverse, and coil is connected to form Y type three through node and is connected.
5. the integrated energy accumulation device for fly wheel of a kind of superconducting magnetic suspension as claimed in claim 1 is characterized in that, described hts bulk (12) adopts seven YBaCuO material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100572092A CN102594008A (en) | 2012-03-06 | 2012-03-06 | Energy storage device of vacuum super-conducting magnetic suspension integrated flywheel |
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| CN2012100572092A CN102594008A (en) | 2012-03-06 | 2012-03-06 | Energy storage device of vacuum super-conducting magnetic suspension integrated flywheel |
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| CN2012100572092A Pending CN102594008A (en) | 2012-03-06 | 2012-03-06 | Energy storage device of vacuum super-conducting magnetic suspension integrated flywheel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052243A (en) * | 2014-06-25 | 2014-09-17 | 哈尔滨工程大学 | Commutatorless high-temperature superconductivity direct current motor structure |
| CN104578469A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Method and device for lowering vibration and noise of switched reluctance motor |
| CN105429432A (en) * | 2015-12-08 | 2016-03-23 | 新乡学院 | Continuous power output device in superconducting meissner effect process |
| CN108110942A (en) * | 2018-01-04 | 2018-06-01 | 中国科学院电工研究所 | A kind of magnetic suspension mechanical energy storage system |
| CN111917338A (en) * | 2020-08-11 | 2020-11-10 | 浙江超鼎机电有限公司 | High-temperature superconducting hybrid magnetic suspension permanent magnet variable frequency motor |
| CN112838742A (en) * | 2020-12-18 | 2021-05-25 | 南京工程学院 | Strong-magnetic speed-increasing superconducting new energy conversion device and optimization method thereof |
| CN113328566A (en) * | 2021-06-28 | 2021-08-31 | 石家庄铁道大学 | Inner stator type high-temperature superconducting flywheel energy storage system and energy storage method |
| CN113899535A (en) * | 2021-08-26 | 2022-01-07 | 北京机械设备研究所 | Device and method for testing support characteristics of high-temperature superconducting suspension type flywheel rotor |
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| CN101207346A (en) * | 2007-12-20 | 2008-06-25 | 北京宇航世纪超导储能设备技术有限公司 | Magnetic suspension accumulated energy flywheel |
| CN201352737Y (en) * | 2009-01-22 | 2009-11-25 | 北京宇航世纪超导储能设备技术有限公司 | High-temperature superconducting flywheel energy storage device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052243A (en) * | 2014-06-25 | 2014-09-17 | 哈尔滨工程大学 | Commutatorless high-temperature superconductivity direct current motor structure |
| CN104578469A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Method and device for lowering vibration and noise of switched reluctance motor |
| CN105429432A (en) * | 2015-12-08 | 2016-03-23 | 新乡学院 | Continuous power output device in superconducting meissner effect process |
| CN105429432B (en) * | 2015-12-08 | 2017-10-13 | 新乡学院 | A kind of continuous output device of superconduction Meisser effect process acting |
| CN108110942A (en) * | 2018-01-04 | 2018-06-01 | 中国科学院电工研究所 | A kind of magnetic suspension mechanical energy storage system |
| CN108110942B (en) * | 2018-01-04 | 2023-10-27 | 中国科学院电工研究所 | Magnetic suspension mechanical energy storage system |
| CN111917338A (en) * | 2020-08-11 | 2020-11-10 | 浙江超鼎机电有限公司 | High-temperature superconducting hybrid magnetic suspension permanent magnet variable frequency motor |
| CN112838742A (en) * | 2020-12-18 | 2021-05-25 | 南京工程学院 | Strong-magnetic speed-increasing superconducting new energy conversion device and optimization method thereof |
| CN112838742B (en) * | 2020-12-18 | 2022-05-03 | 南京工程学院 | Strong-magnetic speed-increasing superconducting new energy conversion device and optimization method thereof |
| CN113328566A (en) * | 2021-06-28 | 2021-08-31 | 石家庄铁道大学 | Inner stator type high-temperature superconducting flywheel energy storage system and energy storage method |
| CN113328566B (en) * | 2021-06-28 | 2022-04-26 | 石家庄铁道大学 | Inner stator type high-temperature superconducting flywheel energy storage system and energy storage method |
| CN113899535A (en) * | 2021-08-26 | 2022-01-07 | 北京机械设备研究所 | Device and method for testing support characteristics of high-temperature superconducting suspension type flywheel rotor |
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Application publication date: 20120718 |