CN102684367A - High-capacity and high-efficiency magnetic suspension flywheel energy storage device - Google Patents
High-capacity and high-efficiency magnetic suspension flywheel energy storage device Download PDFInfo
- Publication number
- CN102684367A CN102684367A CN2012101549445A CN201210154944A CN102684367A CN 102684367 A CN102684367 A CN 102684367A CN 2012101549445 A CN2012101549445 A CN 2012101549445A CN 201210154944 A CN201210154944 A CN 201210154944A CN 102684367 A CN102684367 A CN 102684367A
- Authority
- CN
- China
- Prior art keywords
- flywheel
- energy storage
- storage device
- motor
- highly effective
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention relates to a high-capacity and high-efficiency magnetic suspension flywheel energy storage device. The high-capacity and high-efficiency magnetic suspension flywheel energy storage device comprises a flywheel component, a motor, heavy-load magnetic suspension bearings, a radial bearing, a vacuum sealing shell and a safety component, the flywheel component and the safety component are all arranged in the vacuum sealing shell, the motor, the heavy-load magnetic suspension bearings and the radial bearing are all arranged between the flywheel component and the vacuum sealing shell, the heavy-load magnetic suspension bearings are arranged above and below the motor, and the flywheel component, a rotor of the motor and the heavy-load magnetic suspension bearing form a whole rotor. Compared with the prior art, the high-capacity and high-efficiency magnetic suspension flywheel energy storage device has high energy storage capacity, low loss, high work efficiency and high safety, and is suitable for power energy storage (primary frequency control and peak load shaving), a batch-type new energy power generation system, and the recovery and releasing of the frequency brake starting energy of track traffic.
Description
Technical field
The present invention relates to a kind of energy accumulation device for fly wheel, especially relate to a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device that is applicable to the energy recuperation and the release of electric power energy storage (primary frequency modulation and peak load shifting), batch (-type) grid-connected power generation system, the frequent brake actuating of track traffic.
Background technology
Flywheel energy storage is a kind of physics energy storage, compares with chemical energy storage, flywheel energy storage is very long in environmental protection, high reliability, working life, the speed of discharging and recharging can be soon can be slowly etc. the born advantage that has of aspect, be that chemical energy storage is incomparable.The moment of inertia J of the stored kinetic energy E of flywheel and flywheel and rotational speed omega square relevant, E=0.5J ω
2Technology just at present, people pay attention to flywheel energy storage under fast state mostly and carry out correlation technique and investigation of materials, more concern be the energy density that how to improve energy accumulation device for fly wheel.Yet for the large-capacity power energy storage, high speed flywheel does not have advantage.Under the certain prerequisite of the flywheel strength of materials, low speed, big mass flywheel during the macro-energy energy storage of economic and reliable must rely on.Because big mass flywheel volume weight is big, bearing loss, wind moussing loss and no-load loss when how to reduce the flywheel running become the key issue that macro-energy flywheel high efficiency, long-time energy storage must solve.
Summary of the invention
The object of the invention be exactly provide in order to overcome the defective that above-mentioned prior art exists that a kind of loss is low, high efficiency, safe high capacity highly effective rate magnetically levitated flywheel energy storage device.
The object of the invention can be realized through following technical scheme:
A kind of high capacity highly effective rate magnetically levitated flywheel energy storage device; It is characterized in that; Comprise flywheel assembly, motor, heavily loaded magnetic bearing, journal bearing, vacuum seal housing and security component; Described flywheel assembly, security component all are located in the vacuum seal housing; Described motor, heavily loaded magnetic bearing, journal bearing all are located between flywheel assembly and the vacuum seal housing, and described heavily loaded magnetic bearing is located at the motor upper and lower, and the rotor of described flywheel assembly, motor and heavily loaded magnetic bearing are formed integral rotor.
Described flywheel assembly comprises flywheel body, spoke supporting construction and rotating cylinder, and described flywheel body is connected with rotating cylinder through the spoke supporting construction, and described commentaries on classics letter is connected with the rotor of motor, heavily loaded magnetic bearing, journal bearing respectively.
Described motor is built-in asynchronous motor generator, comprises rotor and armature, and described rotor is installed in the rotating cylinder inboard; Described armature is installed on the vacuum seal housing, and when outside input electric energy, machine operation is at motoring condition; Convert electrical energy into the kinetic energy of flywheel body, i.e. charging; When needs were outwards supplied power, machine operation was at generating state, converted the kinetic energy of flywheel body into electric energy output, i.e. discharge.
Described heavily loaded magnetic bearing is many powerful permanent suspension bearings that dynamic and static magnet ring is combined into, and conductive magnetic yoke all is equipped with in the moving magnet ring outside and magnetostatic ring inboard.
Described vacuum seal housing comprises inner casing, shell, upper plate and lower plate; Described inner casing, shell, upper plate and lower plate are formed confined space; The junction of described inner casing, shell and upper plate, lower plate is equipped with static seal structure and vacuumizes interface; Described inner casing is connected with armature, heavily loaded magnetic bearing, journal bearing respectively, and described inner casing inboard is provided with cooling piece.
Described cooling piece is radiating fin or cooling jacket.
Described security component comprises the safe revetment outside the safe landing unit that is located at rotating cylinder below and the flywheel body.
Described safe landing unit comprises thrust bearing and the buffer spring that is located at the thrust bearing below.
Described safe revetment is the protective layer that single or multiple lift is made up of the high-intensity fiber composite material.
Compared with prior art, the present invention has the following advantages:
1, adopts powerful permanent axial suspension bearing, eliminate the mechanical friction loss basically;
2, adopt built-in asynchronous motor generator, under the pure accumulation of energy of flywheel (not discharging and recharging) running status,, can eliminate the no-load loss of motor through suitable excitation control;
3, the rotor of heavily loaded magnetic bearing and motor and flywheel assembly are designed to integral rotor, make whole device can adopt static seal vacuum structure (having avoided complicated and insecure movable sealing structure), and flywheel body is rotated in a vacuum, has eliminated wind moussing loss;
4, improve operating efficiency, can reach 94%;
5, adopt rotor safe landing unit and buffering spring, axial impact appears in flywheel rotor when effectively preventing chance failure;
6, be provided with one or more layers radially protecting wall, just in case improper crackle appears in flywheel body, protecting wall can effectively protect the direct bump of the broken body of flywheel to shell, and absorbing impact kinetic energy ensures safety.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a sectional structure sketch map of the present invention.
Wherein: 1 is upper plate, and 2 is static seal structure, and 3 is journal bearing, and 4 is heavily loaded magnetic bearing, and 5 is rotor; 6 is armature, and 7 is cooling piece, and 8 is thrust bearing, and 9 is inner casing, and 10 is rotating cylinder; 11 is buffer spring, and 12 is the spoke supporting construction, and 13 is flywheel body, and 14 is safe revetment, and 15 is shell.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of high capacity highly effective rate magnetically levitated flywheel energy storage device; Comprise flywheel assembly, motor, heavily loaded magnetic bearing 4, journal bearing 3, vacuum seal housing and security component; Described flywheel assembly, security component all are located in the vacuum seal housing; Described motor, heavily loaded magnetic bearing 4, journal bearing 3 all are located between flywheel assembly and the vacuum seal housing, and described heavily loaded magnetic bearing 4 is located at the motor upper and lower, and the rotor of described flywheel assembly, motor and heavily loaded magnetic bearing 4 are formed integral rotor.
Described flywheel assembly comprises flywheel body 13, spoke supporting construction 12 and rotating cylinder 10, and described flywheel body 13 is connected with rotating cylinder 10 through spoke supporting construction 12, and described rotating cylinder 10 is connected with the rotor of motor, heavily loaded magnetic bearing 4, journal bearing 3 respectively.Flywheel body 13 is the big inertia hollow cylinder of major diameter of high-tensile structural steel making, and the stored energy capacitance of 2kWh～10MWh can be provided by electric power energy storage requirement.Spoke supporting construction 12 couples together flywheel body 13 and rotating cylinder 10, significantly alleviates the weight of rotary body.
Described motor is built-in asynchronous motor generator, comprises rotor 5 and armature 6, and described rotor 5 is installed in rotating cylinder 10 inboards; Described armature 6 is installed on the vacuum seal housing; Armature 6 is connected with power supply through the Technics of Power Electronic Conversion device of electrical power two-way flow, and when outside input electric energy, machine operation is at motoring condition; Convert electrical energy into the kinetic energy of flywheel body 13, i.e. charging; When needs were outwards supplied power, machine operation was at generating state, converted the kinetic energy of flywheel body 13 into electric energy output, i.e. discharge.As required, but fast charging and discharging, but trickle charge put slowly, but also the long period run on and do not fill the pure energy storage state of not putting, at this moment, motor stops excitation, has eliminated open-circuit core loss.Rotor also can adopt permanent magnetism, salient pole core construction in addition.
Described heavily loaded magnetic bearing 4 is many powerful permanent suspension bearings that dynamic and static magnet ring is combined into, but all wt of rotating body for supporting (weight of large-scale flywheel rotary body can reach tens of tons, even ton up to a hundred) is eliminated the gravity frictional dissipation.The mode of magnetizing of magnet ring can be radial magnetizing, or axial charging, or magnetizes by Halbach row mode, and conductive magnetic yoke all is equipped with in the moving magnet ring outside and magnetostatic ring inboard.
Journal bearing 3 can be a mechanical bearing, also can be magnetic bearing, and its effect is the radial displacement of restriction rotating cylinder.Flywheel gear is vertically installed, and is in non-moving state during operation, and " journal bearing " need not bear radial load basically, thereby frictional dissipation is very little.
Described vacuum seal housing comprises inner casing 9, shell 15, upper plate 1 and lower plate; Described inner casing 9, shell 15, upper plate 1 and lower plate are formed confined space; Described inner casing 9, shell 15 are provided with static seal structure 2 and vacuumize interface with the junction of upper plate 1, lower plate; Described inner casing 9 is connected with the stationary part of armature 6, heavily loaded magnetic bearing 4, journal bearing 3 respectively, and described inner casing 9 inboards are provided with cooling piece 7.Static seal structure 2 makes housing inner chamber and extraneous airtight isolation, vacuumizes interface and is connected with outside vaccum-pumping equipment, keeps the high vacuum of inner chamber, thereby does not produce wind moussing loss during the flywheel body rotation.Cooling piece 7 is radiating fin or cooling jacket, docks with the external refrigeration device, and the heat that produces when " motor " worked is taken away.
Described security component comprises the safe revetment 14 outside the safe landing unit that is located at rotating cylinder below and the flywheel body.Described safe landing unit comprises thrust bearing 8 and the buffer spring 11 that is located at the thrust bearing below.Between rotating cylinder 10 and the thrust bearing 8 safety clearance is arranged.
When heavily loaded magnetic bearing 4 improper losss of excitation, when rotating cylinder 10 distance of glides meet or exceed the safety clearance, thrust bearing 8 will play the safety supports effect to rotating cylinder 10 with buffering spring 11.
The cylindrical shape protective layer that described safe revetment 14 is made up of the high-intensity fiber composite material for single or multiple lift.Its effect is that when flywheel body the crackle fragmentation occurred under extreme failure condition, safe revetment can stop the broken body direct collision of flywheel shell, absorbs its impact kinetic energy, the safety of protection flywheel gear.The energy of the broken body of the thickness of " safe revetment ", the number of plies, interfloor distance and absorption flywheel adapts.
Claims (9)
1. high capacity highly effective rate magnetically levitated flywheel energy storage device; It is characterized in that; Comprise flywheel assembly, motor, heavily loaded magnetic bearing, journal bearing, vacuum seal housing and security component; Described flywheel assembly, security component all are located in the vacuum seal housing; Described motor, heavily loaded magnetic bearing, journal bearing all are located between flywheel assembly and the vacuum seal housing, and described heavily loaded magnetic bearing is located at the motor upper and lower, and the rotor of described flywheel assembly, motor and heavily loaded magnetic bearing are formed integral rotor.
2. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 1; It is characterized in that; Described flywheel assembly comprises flywheel body, spoke supporting construction and rotating cylinder; Described flywheel body is connected with rotating cylinder through the spoke supporting construction, and described rotating cylinder is connected with the rotor of motor, heavily loaded magnetic bearing, journal bearing respectively.
3. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 2 is characterized in that described motor is built-in asynchronous motor generator; Comprise rotor and armature, described rotor is installed in the rotating cylinder inboard, and described armature is installed on the vacuum seal housing; When outside input electric energy; Machine operation converts electrical energy into the kinetic energy of flywheel body at motoring condition, i.e. charging; When needs were outwards supplied power, machine operation was at generating state, converted the kinetic energy of flywheel body into electric energy output, i.e. discharge.
4. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 1; It is characterized in that; Described heavily loaded magnetic bearing is many powerful permanent suspension bearings that dynamic and static magnet ring is combined into, and conductive magnetic yoke all is equipped with in the moving magnet ring outside and magnetostatic ring inboard.
5. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 1; It is characterized in that; Described vacuum seal housing comprises inner casing, shell, upper plate and lower plate; Described inner casing, shell, upper plate and lower plate are formed confined space; The junction of described inner casing, shell and upper plate, lower plate is provided with static seal structure and vacuumizes interface, and described inner casing is connected with the stationary part of armature, heavily loaded magnetic bearing, journal bearing respectively, and described inner casing inboard is provided with cooling piece.
6. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 5 is characterized in that described cooling piece is radiating fin or cooling jacket.
7. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 1 is characterized in that, described security component comprises the safe revetment outside the safe landing unit that is located at rotating cylinder below and the flywheel body.
8. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 7 is characterized in that, described safe landing unit comprises thrust bearing and the buffer spring that is located at the thrust bearing below.
9. a kind of high capacity highly effective rate magnetically levitated flywheel energy storage device according to claim 7 is characterized in that described safe revetment is the protective layer that single or multiple lift is made up of the high-intensity fiber composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154944.5A CN102684367B (en) | 2012-05-16 | 2012-05-16 | High-capacity and high-efficiency magnetic suspension flywheel energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154944.5A CN102684367B (en) | 2012-05-16 | 2012-05-16 | High-capacity and high-efficiency magnetic suspension flywheel energy storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102684367A true CN102684367A (en) | 2012-09-19 |
| CN102684367B CN102684367B (en) | 2014-04-16 |
Family
ID=46815882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210154944.5A Expired - Fee Related CN102684367B (en) | 2012-05-16 | 2012-05-16 | High-capacity and high-efficiency magnetic suspension flywheel energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102684367B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253564A (en) * | 2016-08-12 | 2016-12-21 | 清华大学 | Packaged type flywheel energy storage unit safety preventer and manufacturing process thereof |
| CN106655611A (en) * | 2017-02-09 | 2017-05-10 | 桂林航天工业学院 | Electromagnetic suspension energy recovery type supporting braking system |
| 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 |
| CN115776193A (en) * | 2023-02-10 | 2023-03-10 | 山东天瑞重工有限公司 | Magnetic suspension flywheel battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409478A (en) * | 2007-10-10 | 2009-04-15 | 孙昊天 | Permanent magnetism levitation energy-storing flywheel system |
| CN101964564A (en) * | 2010-10-15 | 2011-02-02 | 浙江工业大学 | Vertical type magnetic suspension flywheel battery adopting thin spoke flywheel |
-
2012
- 2012-05-16 CN CN201210154944.5A patent/CN102684367B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409478A (en) * | 2007-10-10 | 2009-04-15 | 孙昊天 | Permanent magnetism levitation energy-storing flywheel system |
| CN101964564A (en) * | 2010-10-15 | 2011-02-02 | 浙江工业大学 | Vertical type magnetic suspension flywheel battery adopting thin spoke flywheel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253564A (en) * | 2016-08-12 | 2016-12-21 | 清华大学 | Packaged type flywheel energy storage unit safety preventer and manufacturing process thereof |
| CN106253564B (en) * | 2016-08-12 | 2019-02-05 | 清华大学 | Packaged type flywheel energy storage unit safety protective device and its manufacturing process |
| CN106655611A (en) * | 2017-02-09 | 2017-05-10 | 桂林航天工业学院 | Electromagnetic suspension energy recovery type supporting braking system |
| 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 |
| CN115776193A (en) * | 2023-02-10 | 2023-03-10 | 山东天瑞重工有限公司 | Magnetic suspension flywheel battery |
| CN115776193B (en) * | 2023-02-10 | 2023-04-07 | 山东天瑞重工有限公司 | Magnetic suspension flywheel battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102684367B (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101917087B (en) | Magnetic suspension flywheel energy storage device with suspension/energy storage integrated flywheel | |
| CN102684367B (en) | High-capacity and high-efficiency magnetic suspension flywheel energy storage device | |
| CN103929010B (en) | A kind of vertical hybrid magnetic suspension flywheel energy storage system | |
| CN103731068B (en) | The levitation energy-storing flywheel device of permanent-magnetism electromagnetic compound | |
| CN100381719C (en) | Energy-storing flywheel system with magnetic suspension for spacecraft | |
| CN211958962U (en) | High-power magnetic suspension energy storage flywheel system with large electric quantity | |
| CN201733169U (en) | Magnetic suspension flywheel energy storage device using suspension/energy storage integrated flywheel | |
| CN101540517A (en) | High-temperature superconducting flywheel accumulator | |
| CN105305722A (en) | Magnetic suspension energy storage power-generating vehicle wheel | |
| CN100350717C (en) | Flywheel generating, multifunctional system and manufacturing method and important component included in this system | |
| Rimpel et al. | Mechanical energy storage | |
| CN108712009A (en) | A kind of vertical permanent magnet suspending flywheel energy-storage battery | |
| CN103836080A (en) | Composite magnetic levitation protective bearing system | |
| CN202798333U (en) | Automobile transmission shaft generator | |
| US9537368B2 (en) | Magnetic power generator for hybrid vehicle and/or electric power plant | |
| CN110588319A (en) | Special vehicle propulsion system with flywheel energy storage device | |
| EP2766633B1 (en) | Electromechanical flywheel with safety features | |
| CN102122860A (en) | Flywheel energy storage device | |
| CN103023388A (en) | Energy storage battery of magnetic-suspending flywheel | |
| CN111541335B (en) | Magnetic suspension flywheel energy storage device | |
| CN204231088U (en) | A kind of have the flying wheel battery composite power source relaxing impulsive force function | |
| CN107465363B (en) | Improved planar generator using magnetic suspension system | |
| CN102122870A (en) | 5 MW direct-driven permanent magnet wind generator with dual rotors, dual stators and dual air gaps | |
| CN101667762B (en) | double-flywheel battery | |
| CN201286047Y (en) | Double fly wheel battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20170516 |