CN103199631B - Utilize rotor energy-storage system and the energy storage method of eddy energy - Google Patents
Utilize rotor energy-storage system and the energy storage method of eddy energy Download PDFInfo
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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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Abstract
<b> utilizes rotor energy-storage system and the energy storage method </b><bGreatT.Gre aT.GT of eddy energy.</b><bGreatT.Gre aT.GT current chemical cell energy storage technology also exist such as discharge and recharge number of times restriction, to the seriously polluted of environment and to problems such as operating temperature requirements are high.& lt;/ b>& lt;B>The composition of the present invention includes: & lt;/ b>& lt;B>Air compressor (& lt; / b> & lt; b> 1 & lt; / b> & lt; b>)& lt;/ b>& lt;B>, as described & lt;/ b>& lt;B>Air compressor of the electromagnetic valve (& lt; / b> & lt; b> 2 & lt; / b> & lt; b>)With industrial control computer (& lt; / b> & lt; b> 4 & lt; / b> & lt; b>)& lt;/ b>& lt;B>Connection, described & lt;/ b>& lt;B>Electromagnetic valve & lt;/ b>& lt;B>With & lt;/ b>& lt;B>Gas bearing (& lt; / b> & lt; b> 9 & lt; / b> & lt; b>)The gas bearing (& lt; / b> & lt; b> 20 & lt; / b> & lt; b>)& lt;/ b>& lt;B>Connection, described & lt;/ b>& lt;B>Industrial control computer & lt;/ b>& lt;B>With & lt;/ b>& lt;B>Data acquisition instrument (& lt; / b> & lt; b> 3 & lt; / b> & lt; b>)And the motor controller (& lt; / b> & lt; b> 5 & lt; / b> & lt; b>)& lt;/ b>& lt;B>Connection, described & lt;/ b>& lt;B>The motor controller & lt;/ b>& lt;B>With & lt;/ b>& lt;B>High speed permanent magnet motor (& lt; / b> & lt; b> 13 & lt; / b> & lt; b>)& lt;/ b>& lt;B>Connection, described & lt;/ b>& lt;B>High speed permanent magnet motor & lt;/ b>& lt;B>With & lt;/ b>& lt;B>Permanent magnetic coupling coupling (& lt; / b> & lt; b> 12 & lt; / b> & lt; b>)& lt;/ b>& lt;B>Connection, described & lt;/ b>& lt;B>Permanent magnetic coupling coupling & lt;/ b>& lt;B>With & lt;/ b>& lt;B>Axis (& lt; / b> & lt; b> 10 & lt; / b> & lt; b>)& lt;/ b>& lt;B>The connection.</b><bGreatT.Gre aT.GT the present invention is used for </b><bGreatT.Gre aT.GT and utilizes the rotor energy-storage system of eddy energy to carry out storage and the conversion </b><bGreatT.Gre aT.GT of electric energy.</b>
Description
Technical field
The present invention relates to a kind of the rotor energy-storage system and the energy storage method that utilize eddy energy.
Background technology
Along with the quick growth of China's economy, the demand of electrical power storage and conversion is improved constantly.Current chemical cell energy storage technology has developed very ripe, but chemical cell energy storage technology also exist such as discharge and recharge number of times restriction, to the seriously polluted of environment and to problems such as operating temperature requirements are high.Therefore, the novel translated version of electric energy and storage mode have become the focal issue of current energy field.Wherein, mechanical energy storage is a kind of mode wherein with applications well prospect.Mechanical energy storage comprises Compressed Gas energy storage, pumped storage, flywheel energy storage etc.
Flywheel energy storage has that energy conversion efficiency is high, discharge and recharge fast, by geographical environment restriction, can disperse nearby to place, free from environmental pollution, unit mass energy storage density is large, application prospect wide, the long-life, the advantage such as pollution-free.Flywheel energy storage technique primary structure and operation method are substantially clear and definite, mainly be in the experimental stage widely at present, small-sized model machine has been succeeded in developing and has been had and has been applied to actual example, the trend development of current forward development large-scale computer, but but there are very many difficult points, comprising there being the problem such as bearings and rotor dynamics.
One of key technology of flywheel current energy storage is bearings bearing type.Current existing support pattern is roughly divided into following a few class: electromagnetic suspension bearing, super-conductive magnetic suspension bearing, permanent-magnet suspension bearing and mechanical type bearing.Although above support pattern meets high rotating speed and the low-power consumption requirement of accumulated energy flywheel to a certain extent, but also bring comparatively distinct issues: the TT&C system of electromagnetic suspension bearing is complicated, maintenance cost is higher, in addition magnetic bearing itself also needs power supply, this reduces the integral energy conversion efficiency of flywheel energy storage system, reduce energy storage cost performance; Hts magnetic levitation bearing is still immature at present, and needs to build low temperature environment, adds operating cost significantly, causes the integral energy conversion efficiency of flywheel energy storage system to decline equally; The rejection ability that permanent-magnet suspension bearing encourages to external world is poor, depends merely on permanent-magnet suspension bearing itself and cannot realize full suspension; The frictional dissipation of machinery rolling bearing is large, and the life-span is low.
Flywheel rotor is in operation, and is often in the state of high-speed cruising.Especially along with rotor weight and structure lightened degree improve constantly, rotating speed constantly rises, cause rotor can run more than critical whirling speed, now rotor is in the motion state of flex rotor, now whirling motion is considerably beyond other factors, in some cases, whirling motion component can be also larger than single order power frequency component, becomes the major influence factors of rotor motion.In this case, whirling motion has extremely important impact for the motion of rotor-support-foundation system, stability and energy.
The impact of whirling motion comprises two aspects, and on the one hand whirling motion likely affects rotor stability work, if can not get effectively controlling or being subject to external interference, gently then can produce to touch and rub, heavy then can cause the destruction of bearing-rotor structure.On the other hand, rotor can act on the power of the various ways such as out-of-balance force, Oil-film Force, external excitation power, these power are all the factors causing whirling motion to occur.Some power can evoke the forced vibration of rotor, but not such as, to rotor motion input energy, out-of-balance force.Such as, but some power, the oil-film force in sliding bearing can, to the continuous input motion energy of rotor, make rotor energy constantly change between power frequency and whirling motion in any case, thus changes the relations of distribution of energy between rotor power frequency and whirling motion.
For whirling motion, people often see its for the disadvantageous one side of rotor operation, normally adopt the mode increasing damping structure or install film damper additional, to weaken the impact of whirling motion on rotor-support-foundation system as far as possible from vibration suppression angle, this way has its definite meaning from stability angle, but from vortex mechanism, not deep goes excavation whirling motion on the impact of rotor-support-foundation system especially high speed rotor energy-storage system, this way is in High Speed Flexible Rotor situation, suppress the motion effect of whirling motion simply, result greatly reduces energy utilization efficiency, have impact on power conversion and the utilization of energy-storage system, add structural complexity, thus affect the performance of energy-storage system.
For above problem, set out with the actual needs of rotor energy storage, by the research and analysis to whirling motion characteristic, grasp its Influencing Mechanism, just according to the ruuning situation of rotor, the effective control to whirling motion can be realized, and then make full use of the rotor dynamics of whirling motion, positive performance whirling motion, to the advantageous effect of rotor energy-storage system, makes full use of the eddy energy in rotor energy storage device, avoids whirling motion to the adverse effect of rotor energy-storage system itself.
Summary of the invention:
The object of this invention is to provide a kind of the rotor energy-storage system and the energy storage method that utilize eddy energy, there is the features such as volume is little, lightweight, efficiency is high, controllability is strong.
Above-mentioned object is realized by following technical scheme:
A kind of rotor energy-storage system utilizing eddy energy, its composition comprises: air compressor, the solenoid electric valve of described air compressor is connected with industrial computer, described solenoid electric valve is connected with air-bearing (9) and air-bearing (20), described industrial computer is connected with data collecting instrument and electric machine controller, described electric machine controller is connected with high-speed permanent magnet motor, described high-speed permanent magnet motor is connected with permanent-magnet Pole Coupling, and described permanent-magnet Pole Coupling is connected with rotating shaft.
The described rotor energy-storage system utilizing eddy energy, the rotating shaft of the energy storage rotor of described rotor energy-storage system is connected with described air-bearing (9) and air-bearing (20), the key phase current vortex sensor of described rotor energy-storage system is connected with described data collecting instrument, X-direction shaft vibration displacement measurement current vortex sensor (6) is connected with described data collecting instrument with X-direction shaft vibration displacement measurement current vortex sensor (18), described Y-direction shaft vibration displacement measurement current vortex sensor (7) is connected with described data collecting instrument with Y-direction shaft vibration displacement measurement current vortex sensor (19).
The described rotor energy-storage system utilizing eddy energy, described permanent-magnet Pole Coupling comprises generator conductor rotor, permanent magnet rotor, described generator conductor rotor is connected with motor shaft, described permanent magnet rotor is connected with bearing axle, the described permanent-magnet Pole Coupling induced field passed through between the conductor of motor one end and the permanent magnet of load one end interacts and produces torque, just can control the torque of transmitting by regulating the gap between permanent magnet and conductor, thus realize loading speed adjustment.
The described rotor energy-storage system utilizing eddy energy, the air-bearing described in the rotating shaft of described rotor energy-storage system and the structure of energy storage rotor adopt is as lubrication supporting form, and described air-bearing adopts static pressure, dynamic pressure and hybrid structure.
A kind of rotor energy-storage system energy storage method utilizing eddy energy, utilize the rotor energy-storage system energy storage method of eddy energy, the compressed air of the air compressor output of described rotor energy-storage system is after solenoid electric valve, pass into the air-bearing of energy storage rotor-support-foundation system, for bearing provides source of the gas, when motor is as motor, driven by motor rotor rotates, owing to adopting air-bearing, rotor high-speed is rotated, electric energy conversion kinetic energy mechanical energy during low ebb, when peak of power consumption by kinetic energy mechanical energy--rotational kinetic energy during flywheel turns is converted into electric energy and uses, energy storage rotor-support-foundation system is connected with high-speed permanent magnet motor by shaft coupling, the rotating shaft of energy storage rotor is provided with transducer, be used for measuring the motion conditions of rotating shaft, and the signal of collection is sent into industrial computer by data collecting instrument, pass through industrial computer, according to rotating shaft whirling motion situation, motor power stores and conversion requirement, control solenoid electric valve and electric machine controller, thus the motor behavior of adjustment whirling motion and energy, to meet load variations requirement, according to the conversion between energy storage rotor power frequency and eddy energy, realize the control of energy storage rotor energy, thus reduce rotor kinetic energy loss, improve energy conversion efficiency, based on stability distinguishing and the control technology of plain bearing rotor system, by setting up bearing rotor control system, measure Rotor-Bearing System whirling motion situation, send it to computer for controlling, carry out whirling motion assessment of scenario, according to energy storage rotor-support-foundation system energy hole demand, to be transmitted control signal control solenoid valve by computer for controlling, by solenoid electric valve adjustment air-bearing supply gas pressure and flow, thus change rotor-bearing system natural frequency and gas film stiffness, the coupled relation of frequency of vortex motion and natural frequency can be changed, thus control the relations of distribution of whirling motion and power frequency energy, realize the control between energy storage rotor power frequency and eddy energy and conversion.
When energy storage, electric energy is run by electric power converter conversion rear drive motor, and driven by motor rotor accelerates to rotate, and rotor gets up energy storage with the form of kinetic energy, complete the storage power process that electric energy is changed to mechanical energy, energy storage is in the rotor of High Rotation Speed; Afterwards, motor maintains a constant rotating speed, until receive an exergonic control signal; When releasing energy, the rotor dragging motor generating of High Rotation Speed, exports the electric current and the voltage that are applicable to load, completes the process that releases energy that mechanical energy is changed to electric energy through electric power converter.Whole energy-storage system achieves the input of electric energy, storage and output procedure;
The described rotor energy-storage system energy storage method utilizing eddy energy, changing between described rotor energy-storage system mechanical energy and electric energy realizes into core with electric motor and controller, motor is by integrated for motor/generator parts, when energy storage, as motor running, by extraneous electrical energy drive motor, rotor driven accelerates to rotate a certain rotating speed to setting; When releasing energy, motor, again as generator operation, outwards exports electric energy, and now rotor speed constantly declines.
Beneficial effect:
1. controllability of the present invention is strong, volume is little, lightweight, efficiency is high, can be widely used in energy source and power, vehicular traffic, spitkit, Aero-Space and other there is the occasion of electrical power storage and conversion requirements, there is good economy and social benefit.
2. the permanent-magnet Pole Coupling that the present invention relates to solves the centering of load system, soft start, damping, the problem such as speed governing and overload protection, and the power-actuated transmission efficiency of permanent-magnet magnetic is improved greatly, can reach 98.5%.Not only can reduce maintenance cost, increase the practicality of device procedures, also can improve the stability of system, reduce use cost.
3. permanent-magnet electric/generator mutual-inverse type two-way integral the motor of the present invention's employing, structurally abandoned brush and commutator, thus the life-span is long, uses reliable, eliminates the noise and electromagnetic interference that contact and commutate and bring; The Nd-Fe-B permanent magnetic magnet selected makes the volume of motor/generator, weight reduces greatly.
4. the air-bearing body that the present invention relates to adopts the material (as materials such as carbon graphite alloy, carbon fiber, boron nitride) of wear-resisting, high strength and self-lubricating solid performance as air-bearing inner surface material.According to the design feature of air-bearing and axle journal sound parts, at dynamic and static gaps runner place, power that fluid pressurized and outside supply gas pressure coupling produce makes its axle suspension float to utilize axle journal to rotarily drive.Adopt the damping technology measures such as elastic rubber ring, metal-rubber and elastic composite, improve the stability of air-bearing Inhaul operation further.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of rotor energy-storage system of the present invention.
Accompanying drawing 2 is schematic diagrams of permanent-magnet Pole Coupling of the present invention.
Embodiment:
Embodiment 1:
A kind of rotor energy-storage system utilizing eddy energy, its composition comprises: air compressor 1, the solenoid electric valve 2 of described air compressor is connected with industrial computer 4, described solenoid electric valve is connected with air-bearing 9 and air-bearing 20, described industrial computer is connected with data collecting instrument 3 and electric machine controller 5, described electric machine controller is connected with high-speed permanent magnet motor 13, described high-speed permanent magnet motor is connected with permanent-magnet Pole Coupling 12, and described permanent-magnet Pole Coupling is connected with rotating shaft 10.
Embodiment 2:
The rotor energy-storage system utilizing eddy energy according to embodiment 1, the energy storage rotor 11 of described rotor energy-storage system is connected with described rotating shaft 10, described rotating shaft 10 is connected with described air-bearing 9 and air-bearing 20, the key phase current vortex sensor 8 of described rotor energy-storage system is connected with described data collecting instrument 3, the X-direction shaft vibration displacement measurement current vortex sensor 6 of described rotor energy-storage system is connected with described data collecting instrument 3 with X-direction shaft vibration displacement measurement current vortex sensor 18, described Y-direction shaft vibration displacement measurement current vortex sensor 7 is connected with described data collecting instrument 3 with Y-direction shaft vibration displacement measurement current vortex sensor 19.
Embodiment 3:
The rotor energy-storage system utilizing eddy energy according to embodiment 1 or 2, described permanent-magnet Pole Coupling comprises generator conductor rotor 15, permanent magnet rotor 16, described generator conductor rotor is connected with motor shaft 14, described permanent magnet rotor is connected with bearing axle 17, the described permanent-magnet Pole Coupling induced field passed through between the conductor of motor one end and the permanent magnet of load one end interacts and produces torque, just can control the torque of transmitting by regulating the gap between permanent magnet and conductor, thus realize loading speed adjustment.
Embodiment 4:
The rotor energy-storage system utilizing eddy energy according to embodiment 1 or 2 or 3, air-bearing described in the rotating shaft of described rotor energy-storage system and the structure of energy storage rotor adopt is as lubrication supporting form, and described air-bearing adopts static pressure, dynamic pressure and hybrid structure.
Embodiment 5:
The above-mentioned rotor energy-storage system energy storage method utilizing eddy energy, the compressed air of the air compressor output of described rotor energy-storage system is after solenoid electric valve, pass into the air-bearing of energy storage rotor-support-foundation system, for bearing provides source of the gas, when motor is as motor, driven by motor rotor rotates, owing to adopting air-bearing, rotor high-speed is rotated, electric energy conversion kinetic energy mechanical energy during low ebb; When peak of power consumption by kinetic energy mechanical energy--rotational kinetic energy during flywheel turns transforms electric energy and uses; Energy storage rotor-support-foundation system is connected with high-speed permanent magnet motor by shaft coupling, the rotating shaft of drive rotor is provided with transducer, be used for measuring the motion conditions of rotating shaft, and the signal of collection is sent into industrial computer by data collecting instrument, pass through industrial computer, store and conversion requirement according to rotating shaft whirling motion situation, motor power, control solenoid electric valve and electric machine controller, thus the motor behavior of adjustment whirling motion and energy, to meet load variations requirement, according to the conversion between energy storage rotor power frequency and eddy energy, real
The control of existing energy storage rotor energy, thus reduce rotor kinetic energy loss, improve energy conversion efficiency;
Based on stability distinguishing and the control technology of plain bearing rotor system, by setting up bearing rotor control system, measure Rotor-Bearing System whirling motion situation, send it to computer for controlling, carry out whirling motion assessment of scenario, according to energy storage rotor-support-foundation system energy hole demand, to be transmitted control signal control solenoid valve by computer for controlling, by solenoid electric valve adjustment air-bearing supply gas pressure and flow, thus change rotor-bearing system natural frequency and gas film stiffness, the coupled relation of frequency of vortex motion and natural frequency can be changed, thus control the relations of distribution of whirling motion and power frequency energy, realize the control between energy storage rotor power frequency and eddy energy and conversion.
Embodiment 6:
The above-mentioned rotor energy-storage system energy storage method utilizing eddy energy, changing between described rotor energy-storage system mechanical energy and electric energy realizes into core with motor and controller, motor is by integrated for motor/generator parts, when energy storage, as motor running, by extraneous electrical energy drive motor, rotor driven accelerates to rotate a certain rotating speed to setting; When releasing energy, motor, again as generator operation, outwards exports electric energy, and now rotor speed constantly declines.
Embodiment 7:
The above-mentioned rotor energy-storage system energy storage method utilizing eddy energy, described energy storage rotor-support-foundation system is that a kind of energy storage device of energy converting between mechanical is by electronic/generating mutual-inverse type either-rotation motor, mutual conversion between electric energy and the energy storage rotor mechanical kinetic energy run up and storage, and by frequency modulation, rectification, constant voltage and dissimilar loading interfaces.
When energy storage, electric energy is run by electric power converter conversion rear drive motor, and driven by motor rotor accelerates to rotate, and rotor gets up energy storage with the form of kinetic energy, complete the storage power process that electric energy is changed to mechanical energy, energy storage is in the rotor of High Rotation Speed; Afterwards, motor maintains a constant rotating speed, until receive an exergonic control signal; When releasing energy, the rotor dragging motor generating of High Rotation Speed, exports the electric current and the voltage that are applicable to load, completes the process that releases energy that mechanical energy is changed to electric energy through electric power converter.Whole energy-storage system achieves the input of electric energy, storage and output procedure.
In order to system configuration and reduction power consumption, adopt permanent-magnet electric/generator mutual-inverse type two-way integral motor.Structurally abandoned brush and commutator, thus the life-span is long, uses reliable, eliminates the noise and electromagnetic interference that contact and commutate and bring.Because power consumption also depends on armature resistance, eddy current and magnetic hysteresis loss, therefore select that Nd-Fe-B permanent magnetic magnet makes the volume of motor/generator, weight reduces greatly.
Air-bearing body can adopt static pressure, dynamic pressure or hybrid three kinds of versions.Adopt the material (as materials such as carbon graphite alloy, carbon fiber, boron nitride) of wear-resisting, high strength and self-lubricating solid performance as air-bearing inner surface material.According to the design feature of air-bearing and axle journal sound parts, at dynamic and static gaps runner place, power that fluid pressurized and outside supply gas pressure coupling produce makes its rotating shaft suspend to utilize axle journal to rotarily drive.The damping technology measures such as elastic rubber ring, metal-rubber and elastic composite can be adopted, improve the stability of air-bearing Inhaul operation further.
Permanent-magnet Pole Coupling is realized by the torque transfer of motor (generator) to load by the magnetic couple effect between conductor and permanent magnet, thus achieve in driving and linked by the mechanical of driving side.Its operation principle is that the induced field interaction between the conductor of motor one end and the permanent magnet of load one end produces torque, just can control the torque of transmitting, thus realize loading speed adjustment by regulating the gap between permanent magnet and conductor.This shaft coupling solves the centering of load system, soft start, damping, the problem such as speed governing and overload protection, and the power-actuated transmission efficiency of permanent-magnet magnetic is improved greatly, can reach 98.5%.Not only can reduce maintenance cost, increase the practicality of device procedures, also can improve the stability of system, reduce use cost.
Whirling motion can occupy a part of rotation function, and this portion of energy can not be directly output as shaft work.Along with whirling motion amplitude increases, eddy energy gathers increase.If can not be regulated, subharmonic vibration energy is increased to certain level, eddy energy will be made excessive, cause amplitude to exceed standard, and causes to touch and rubs; Meanwhile, for the high speed energy storage rotor-support-foundation system utilizing eddy energy, wish again conversion and the distribution that effectively can control whirling motion and power frequency energy, realize the efficiency utilization that energy storage rotor energy utilizes.In order to achieve this end, in whirling motion control, need to solve two problems.One is whirling motion control strategy problem, two is that concrete work is in control strategy, based on the patent of invention of Yang Jinfu " plain bearing rotor system stability distinguishing and control technology " (patent No.: CN200410101458.2), adopt whirling motion coupling exciting and the analytical method of Non-linear coupling vibration displacement limit cycle, the outer disturbance parameter of effective coherent system, between structural parameters and physical parameter relation on the impact of bearing rotor system motor behavior; The whirling motion angular speed d φ/dt of Reasonable adjustment axle journal angular velocity of rotation ω 0, axle journal and the coupled motions characteristic of eccentricity pace of change d ε/dt, guarantee conservation equation Θ+ξ+Ψ-ω >=1 of the Conversion of Energy of bearing fluid-solid coupled motion form, realize motion and the energy hole of whirling motion.
In the Project Realization controlled, by setting up bearing rotor control system, measure Rotor-Bearing System whirling motion situation, send it to computer for controlling, carry out whirling motion assessment of scenario, according to energy storage rotor-support-foundation system energy hole demand, to be transmitted control signal control solenoid valve by computer for controlling, to adjust bearing supply gas pressure and flow, by adjustment air-bearing supply gas pressure and flow, system frequency, gas film stiffness and damping can be changed, thus change the coupled relation of frequency of vortex motion and natural frequency; Effective control whirling motion and power frequency energy, both avoided low frequency energy capture and occur touching unstability of rubbing, and can control again whirling motion and power frequency energy distribution relation.Meanwhile, by the feedback signal input control computer of electric machine controller, as the reference frame regulated.
Claims (1)
1. one kind utilizes the rotor energy-storage system of eddy energy, its composition comprises: air compressor, it is characterized in that: the solenoid electric valve of described air compressor is connected with industrial computer, described solenoid electric valve is connected with air-bearing, described industrial computer is connected with data collecting instrument and electric machine controller, described electric machine controller is connected with high-speed permanent magnet motor, described high-speed permanent magnet motor is connected with permanent-magnet Pole Coupling, and described permanent-magnet Pole Coupling is connected with rotating shaft;
The rotating shaft of the energy storage rotor of described rotor energy-storage system is connected with described air-bearing, the key phase current vortex sensor of described rotor energy-storage system is connected with described data collecting instrument, X-direction shaft vibration displacement measurement current vortex sensor is connected with described data collecting instrument, and Y-direction shaft vibration displacement measurement current vortex sensor is connected with described data collecting instrument;
Described permanent-magnet Pole Coupling comprises generator conductor rotor, permanent magnet rotor, described generator conductor rotor is connected with motor shaft, described permanent magnet rotor is connected with bearing axle, the described permanent-magnet Pole Coupling induced field passed through between the conductor of motor one end and the permanent magnet of load one end interacts and produces torque, just can control the torque of transmitting by regulating the gap between permanent magnet and conductor, thus realize loading speed adjustment;
Air-bearing described in the rotating shaft of described rotor energy-storage system and the structure of energy storage rotor adopt is as lubrication supporting form, and described air-bearing adopts static pressure, dynamic pressure and hybrid structure;
The compressed air of the air compressor output of described rotor energy-storage system is after solenoid electric valve, pass into the air-bearing of energy storage rotor-support-foundation system, for bearing provides source of the gas, when motor is as motor, driven by motor rotor rotates, owing to adopting air-bearing, rotor high-speed is rotated, electric energy conversion kinetic energy mechanical energy during low ebb, transform electric energy when peak of power consumption by rotational kinetic energy during kinetic energy mechanical energy-flywheel turns to use, energy storage rotor-support-foundation system is connected with high-speed permanent magnet motor by shaft coupling, the rotating shaft of energy storage rotor is provided with transducer, be used for measuring the motion conditions of rotating shaft, and the signal of collection is sent into industrial computer by data collecting instrument, pass through industrial computer, according to rotating shaft whirling motion situation, motor power stores and conversion requirement, control solenoid electric valve and electric machine controller, thus the motor behavior of adjustment whirling motion and energy, to meet load variations requirement, according to the conversion between energy storage rotor power frequency and eddy energy, realize the control of energy storage rotor energy, thus reduce rotor kinetic energy loss, improve energy conversion efficiency,
When energy storage, electric energy is run by electric power converter conversion rear drive motor, and driven by motor rotor accelerates to rotate, and rotor gets up energy storage with the form of kinetic energy, complete the storage power process that electric energy is changed to mechanical energy, energy storage is in the rotor of High Rotation Speed; Afterwards, motor maintains a constant rotating speed, until receive an exergonic control signal; When releasing energy, the rotor dragging motor generating of High Rotation Speed, exports the electric current and the voltage that are applicable to load, completes the process that releases energy that mechanical energy is changed to electric energy through electric power converter; Whole energy-storage system achieves the input of electric energy, storage and output procedure;
By setting up bearing rotor control system, measure Rotor-Bearing System whirling motion situation, send it to industrial computer, carry out whirling motion assessment of scenario, according to energy storage rotor-support-foundation system energy hole demand, to be transmitted control signal control solenoid electric valve by industrial computer, to adjust bearing supply gas pressure and flow, by adjustment air-bearing supply gas pressure and flow, system frequency, gas film stiffness and damping can be changed, thus change the coupled relation of frequency of vortex motion and natural frequency; Effective control whirling motion and power frequency energy, both avoided low frequency energy capture and occur touching unstability of rubbing, and can control again whirling motion and power frequency energy distribution relation; Meanwhile, by the feedback signal of electric machine controller input industrial computer, as the reference frame regulated;
Based on stability distinguishing and the control technology of plain bearing rotor system, by solenoid electric valve adjustment air-bearing supply gas pressure and flow, thus change rotor-bearing system natural frequency and gas film stiffness, the coupled relation of frequency of vortex motion and natural frequency can be changed, thus control the relations of distribution of whirling motion and power frequency energy, realize the control between energy storage rotor power frequency and eddy energy and conversion;
Changing between described rotor energy-storage system mechanical energy and electric energy realizes into core with motor and controller, motor is by integrated for motor/generator parts, when energy storage, as motor running, by extraneous electrical energy drive motor, rotor driven accelerates to rotate a certain rotating speed to setting; When releasing energy, motor, again as generator operation, outwards exports electric energy, and now rotor speed constantly declines;
Adopt permanent-magnet electric/generator mutual-inverse type two-way integral motor, because power consumption also depends on armature resistance, eddy current and magnetic hysteresis loss, therefore select that Nd-Fe-B permanent magnetic magnet makes the volume of motor/generator, weight reduces greatly.
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