377 results about "Flywheel energy storage" patented technology

The invention discloses a distributed light storage and charging integrated system, which comprises a photovoltaic power generation unit, an energy storage unit, a charging unit, a power grid interface unit, an energy management controller and a direct current bus, the photovoltaic power generation unit comprises a DC / DC converter, and the photovoltaic power generation unit is connected with the DC bus through the DC / DC converter; the energy storage unit comprises a lithium ion battery pack, a flywheel energy storage device, a bidirectional DC converter and a flywheel controller. The lithium ion battery pack and the flywheel energy storage device are connected to the DC bus through the bidirectional DC converter and the flywheel controller respectively. The charging unit comprises at least one direct-current quick charging pile, at least one alternating-current slow charging pile and a DC / AC inverter, the direct-current quick charging pile is directly connected with the direct-current bus, and the alternating-current slow charging pile is connected with the direct-current bus through the DC / AC inverter; the power grid interface unit comprises an AC / DC converter and is connected with the DC bus through the AC / DC converter. According to the invention, through collaborative design of a modular hardware architecture and an intelligent time-sharing strategy, comprehensive improvement of economy, reliability and functionality of the system is realized.

The invention relates to the technical field of flywheel energy storage equipment, in particular to a flywheel rotor dynamic balance self-adaptive adjusting method and system based on magnetorheological fluid. The method comprises the steps that the sealing state of a magnetorheological fluid cavity is detected through a pressure sensor, and it is ensured that the pressure in the cavity is stable and free of leakage; the non-contact displacement sensor executes zero calibration, and output signal fluctuation is controlled within a preset range; carrying out no-load test on a current output port of the self-adaptive control module; when the rotating speed rises from a static state to a preset rotating speed value, a sensor of the real-time monitoring module synchronously collects a radial vibration signal of the rotor, decomposes a fundamental frequency vibration component with the same frequency as the rotating speed, and calculates the amplitude and the phase of the unbalance; when the rotating speed is stabilized in a preset rotating speed interval, the self-adaptive control module enters a closed-loop adjusting state, and when an unbalanced phase is calculated according to detection, a corresponding compensation quadrant fan-shaped cavity is locked, and the current of an electromagnetic coil is adjusted; the problem of traditional adjustment lag is solved, and over-compensation and under-compensation under variable working conditions are avoided.

The invention provides an intelligent power distribution method of an energy storage system, which comprises the steps of acquiring power grid real-time frequency data, load demand power data and energy storage unit state data, and the energy storage system comprises a lithium battery energy storage unit, a super capacitor energy storage unit and a flywheel energy storage unit which are connected to a power grid bus through a power converter. Calculating a power deviation value according to the power grid frequency and the load power data, and determining the power distribution weight of each energy storage unit based on the deviation value and the energy storage unit state data; and generating power instructions of each energy storage unit, and executing the instructions through a power converter to complete power dynamic adjustment. And storing the power deviation value, the power allocation weight of each energy storage unit and the power instruction in a database as logs. The overall performance of the energy storage system can be improved, the frequency stability and the load response capability of the power grid are enhanced, the service life of the energy storage unit is prolonged, and the operation safety of the system is improved.

The invention provides a flywheel coupling fused salt energy storage thermal power peak regulation power generation system and an operation method. The method comprises the steps that the operation state of the power generation system is obtained; and according to the operation state, determining a power grid power supply main body and a supplementary power supply main body from the thermal power generating unit, the fused salt energy storage module and the flywheel energy storage module so as to perform peak regulation of the power generation system. According to the method, through multi-dimensional complementation of high frequency-low frequency, short time-long time and power type-energy type of a flywheel energy storage module and a fused salt energy storage module, the seesaw trapping of single energy storage in response speed and duration is broken, the peak regulation rate, depth and safety of a thermal power generating unit are remarkably improved, and meanwhile peak regulation coal consumption and carbon emission are greatly reduced; the collaborative architecture of flywheel stabilization fluctuation, fused salt energy translation and thermal power stable support provides an innovative paradigm for constructing a thermal power peak regulation system with high elasticity, low cost and long service life, and powerfully supports a power grid to consume fluctuating renewable energy sources and realizes dynamic balance of source grid load storage.

The invention discloses an island micro-grid frequency coordination control method based on flywheel and battery hybrid energy storage, and provides a hybrid energy storage coordination control method for solving the problem that a diesel generator in an island micro-grid is low in inherent response speed and difficult to deal with rapid load disturbance in time. The method combines the advantages of a flywheel energy storage system (FESS) and a battery energy storage system (BESS) to construct a multi-time-scale frequency regulation mechanism: the FESS is responsible for absorbing or releasing a high-frequency power component and quickly responding to instantaneous fluctuation; the BESS bears an intermediate-frequency power component and realizes medium-term energy regulation; and the diesel generator compensates the low-frequency power component and maintains long-term steady-state operation. Through the multi-unit collaborative hierarchical control, the frequency stability and the operation reliability of the island micro-grid are remarkably improved, the dynamic regulation pressure of the diesel engine is reduced, and the frequent charge-discharge cycle of the battery is reduced, so that the service life of the energy storage system is prolonged.

The invention relates to the technical field of hybrid energy storage systems, and particularly discloses a net-forming type flywheel and electrochemistry hybrid energy storage system and a cooperative control method thereof. The net-forming type flywheel and electrochemical hybrid energy storage system comprises an alternating current bus, a direct current bus, a brake unit, a first energy storage converter, a plurality of second energy storage converters, a plurality of flywheel energy storage units, a plurality of electrochemical energy storage units and a controller. The first energy storage converter is used for constructing an independently operated alternating current power grid in a network construction operation mode; the controller is used for carrying out power distribution on the flywheel energy storage units and the electrochemical energy storage units based on the instantaneous frequency change rate, so that power support is provided for the first energy storage converter through the direct-current bus, and the stability of the alternating-current power grid is maintained. According to the invention, the dynamic supporting capability and the operation reliability of the net-forming type flywheel and electrochemical hybrid energy storage system can be comprehensively improved.

The invention discloses a charging and discharging control method and system for flywheel energy storage, and belongs to the technical field of flywheels. Wherein the state data comprises power grid parameters, flywheel parameters and electrical parameters; constructing a dynamic loss prediction model of flywheel energy storage based on the state data; grading is carried out according to the emergency degree of power grid power shortage, and a corresponding flywheel control target is matched; and obtaining an optimal charging and discharging power instruction based on the dynamic loss prediction model and the power shortage of the power grid. Through the processing scheme disclosed by the invention, the economical efficiency and reliability of the flywheel energy storage system are remarkably improved while the stability of the frequency of the power grid is ensured, and a key technical support is provided for safe operation of the power grid under high-proportion access of new energy.

The invention provides a frequency modulation switching method, device, equipment and system for hybrid energy storage, and relates to the technical field of power grid frequency modulation. The method comprises the steps of obtaining a real-time SOC value of the flywheel energy storage device in a power grid frequency modulation process of the flywheel energy storage device; determining the remaining available time of the flywheel energy storage device based on the real-time SOC value; when the remaining available time reaches a set time threshold value, the battery energy storage device is controlled to start participating in power grid frequency modulation; and correspondingly reducing the real-time flywheel frequency modulation power of the flywheel energy storage device based on the real-time battery frequency modulation power of the battery energy storage device until the real-time battery frequency modulation power of the battery energy storage device reaches the frequency modulation power required by the current power grid. According to the invention, seamless switching between the flywheel energy storage device and the battery energy storage device can be realized.

The invention discloses a cooperative control method and system based on a flywheel energy storage converter and an electrochemical energy storage converter. The cooperative control method comprises the steps of collecting real-time operation data of a power grid, and judging the strength grade of the power grid according to the real-time operation data of the power grid; controlling a flywheel energy storage converter and an electrochemical energy storage converter to be switched into corresponding control modes according to the judgment result of the strength grade of the power grid; when power grid disturbance is detected, a corresponding control instruction is issued according to the real-time power state of the flywheel energy storage converter and the battery SOC of the electrochemical energy storage converter, and cooperative response of the two energy storage converters is achieved; after the power grid disturbance is eliminated, the flywheel energy storage converter is controlled to stop responding and enter an energy storage recovery state, and meanwhile the electrochemical energy storage converter is controlled to be adjusted to a floating charge or standby state according to the current battery SOC state. The advantages of flywheel energy storage and electrochemical energy storage are fused, and efficient and stable operation of the power grid is achieved through cooperative control of the converter.

The invention relates to the technical field of intelligent power grids, in particular to a data center flywheel energy storage optimization control system. According to the method, frequency transition characteristics are extracted through real-time identification of energy consumption curve frequency spectrum distribution, and dynamic response association between the rotating speed and the voltage is established immediately at the initial stage of energy storage release, so that nonlinear threshold adjustment and rotating speed slope fine setting of an energy storage release path are realized; an asymmetry index is formed by combining uplink and downlink difference analysis of a periodic power curve, an energy release time sequence and a response priority are further optimized, a voltage regulation parameter and an energy storage release path are promoted to form a coupling linkage mechanism, a flywheel can output electric energy in a mode of better fitting a load change rhythm in an acceleration stage, and the energy release efficiency is improved. Finally, fine dynamic regulation and control of the multi-stage rotating speed slope and the trigger delay in the output process are achieved, the matching degree of the power supply stability and the energy response is remarkably improved, and the adaptability of the system to load fluctuation and power supply switching is enhanced.

The invention relates to the technical field of flywheel energy storage devices, and discloses a magnetic suspension flywheel energy storage device, which comprises a motor stator, a flywheel rotor and a magnetic bearing, and is characterized in that the flywheel rotor comprises a conical part and a main body part which are coaxially arranged, and the main body part is rotatably connected to the motor stator; the magnetic bearing comprises two bearing stators which are sequentially arranged in the first direction, a plurality of radial stator teeth of the bearing stators are uniformly and symmetrically distributed in the circumferential direction of a conical part, air gaps exist between the radial stator teeth and the flywheel rotor, the radial stator teeth are connected with yoke parts, and a first permanent magnet is connected between the yoke parts of the two bearing stators; the side, away from the first permanent magnet, of the yoke part of one bearing stator is connected with multiple axial stator teeth, the multiple axial stator teeth are evenly and symmetrically distributed in the circumferential direction of the conical part, and air gaps exist between the axial stator teeth and the flywheel rotor. According to the magnetic suspension flywheel energy storage device, larger axial force can be generated, more gravity loads borne by a system can be counteracted, and the suspension stability of the system is improved.

The invention discloses a composite energy storage offline dynamic test system and test method. The system comprises a flywheel energy storage unit, a compressed air energy storage unit, an energy management and cooperative control unit and a data acquisition and analysis unit. The flywheel energy storage unit is used for simulating dynamic working conditions of a power grid; the compressed air energy storage unit is used for executing charging and discharging and multi-mode operation under the dynamic power grid working condition simulated by the flywheel energy storage unit; the energy management and cooperative control unit is used for coordinately controlling energy interaction and operation modes of the flywheel energy storage unit and the compressed air energy storage unit according to a preset test target and working condition data; and the data acquisition and analysis unit is used for acquiring and synchronously recording key operation parameters of the energy storage unit in the test process in real time, and performing anomaly detection to generate a performance test report. A flywheel energy storage unit is used as a programmable virtual power grid, and an energy management and control algorithm is combined, so that high-precision off-line testing of a compressed air energy storage unit under a complex dynamic working condition is realized.

The invention relates to the technical field of motors, and discloses a flywheel energy storage motor stator-rotor structure and an optimization method thereof, and the flywheel energy storage motor stator-rotor structure comprises a stator body, a rotor body and a motor air gap. The method further comprises the following steps: step 1, designing an air-gap magnetic field: by adjusting the shape and the arrangement mode of a motor air gap or a permanent magnet, enabling a flux density waveform to be close to a sine wave when the motor air gap is in a no-load state so as to suppress harmonic waves; step 2, slot-pole matching design: a stator winding adopts a fractional slot concentrated winding form, a high fundamental wave winding factor is obtained by adjusting the matching relation between stator slots and permanent magnet pole numbers, and specific subharmonics are suppressed from a winding magnetomotive force level; 3, magnetic circuit and structure design: magnetic circuit saturation is suppressed by adjusting the geometric dimensions of stator teeth and a yoke part; according to the invention, the comprehensive performance targets of high torque density, high efficiency and low torque pulsation of the flywheel motor can be realized at the same time.

The invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage motor and a vacuum operation device.The flywheel energy storage motor comprises a vacuum protection shell, a heat dissipation chamber is fixedly connected to the bottom of the outer side of the vacuum protection shell, a motor chamber is fixedly connected to the top of the outer side of the vacuum protection shell, and a fixing ring is fixedly connected to the interior of the motor chamber; according to the Roots vacuum pump, the flywheel energy storage assembly and the vibration reduction and noise elimination mechanism are used, when a small amount of gas permeates into the vacuum cavity, the gas in the vacuum cavity is exhausted through cooperation of the flow guide cavity, the spiral line and the impeller, long-term operation of the Roots vacuum pump is not needed, energy consumption is reduced, and cost is saved; meanwhile, the Roots vacuum pump is separated from the vacuum cavity, and the silencing cavity is formed between the Roots vacuum pump and the vacuum cavity, so that the influence of vibration and noise generated in the working process of the Roots vacuum pump on operation of parts in the vacuum cavity is further reduced, and the use practicability and reliability of the device are improved.

The invention belongs to the field of flywheel energy storage devices, and particularly relates to a magnetic coupling transmission flywheel energy storage device and a working method thereof.The magnetic coupling transmission flywheel energy storage device comprises a motor shell and a flywheel shell, the top end of the motor shell is detachably and fixedly connected and communicated with the bottom end of the flywheel shell, and a flywheel energy storage assembly is installed between the motor shell and the flywheel shell through a magnetic coupling transmission assembly; the top of the motor shell is provided with an air blowing heat dissipation assembly, the flywheel shell is provided with a vacuumizing assembly and a flywheel cleaning assembly, and the motor shell is provided with an air exhaust assembly. The device has the beneficial effects that the device has the function of driving the flywheel to rotate and store energy through magnetic coupling transmission, meanwhile, after the device releases energy for one time, the motor can be conveniently and rapidly cooled, regular brushing and cleaning operation can be conveniently conducted on the surface of the flywheel, the service life of the device is prolonged, and the device is suitable for popularization.

The invention discloses a through-flow cooling structure and system in a hollow shaft of a flywheel energy storage rotor. The structure comprises a closed oil discharge pool located at the bottom of a vacuum sealing shell and a heat exchange coil communicated with an external cold source. The inner wall of the motor rotor hollow shaft is axially stacked with slotted stacked discs, and the slotted stacked discs are staggered to form a spiral stepped flow channel from top to bottom; the in-shell vertical vacuum oil pump lifts oil to the top of the hollow shaft through the oil supply pipe, the oil is evenly distributed to flow into the spiral flow channel under the action of the dynamic seal and the oil receiving annular structure, and after heat exchange, the oil flows back to the oil discharge pool through the oil discharge annular structure and an annular gap in the outer side of the oil supply pipe. During working, oil returns into a channel through the top, flows through from top to bottom and exchanges heat with the hollow shaft / stacked disc in an enhanced manner, and return oil exchanges heat with an external cold source in an oil discharge pool to form closed circulation. The rotor temperature rise and thermal gradient can be remarkably reduced while vacuum integrity is kept, the pressure drop is reduced, the operation reliability is improved, and the rotor structure is suitable for a high-rotating-speed and high-energy-density flywheel system.

The invention discloses a flywheel energy storage active phase modulation control method, system and device and a medium, and the method comprises the following steps: collecting multi-source power data of a power grid, and obtaining preprocessed phasor data; inputting the preprocessed phasor data into a first network model, and predicting a voltage phasor trajectory, a power angle trajectory and a frequency trajectory in a future preset time window; respectively carrying out corresponding evaluation and analysis, and outputting corresponding evaluation and analysis results; and respectively calculating an active power injection instruction in a power angle support mode, a reactive power injection instruction in a voltage phase correction mode or an anti-phase power injection instruction in an oscillation suppression mode according to an evaluation analysis result, and controlling the flywheel body to output power. According to the method, the power grid phasor trajectory is predicted, risks can be pre-judged and control measures can be actively taken before instability occurs, the defect of traditional afterward response is changed, passive is changed into active, and the timeliness and effectiveness of control are improved.

The invention relates to the technical field of flywheel energy storage control, in particular to a flywheel energy storage array charging and discharging control method based on distributed coordination, which comprises the following steps: acquiring real-time rotating speed and capacity of a flywheel energy storage unit, detecting rotating speed difference and marking abnormity, adjusting a charging and discharging instruction to remove abnormity, and updating an energy distribution snapshot. And counting the dependency sequence to generate a priority list, judging overtime adjustment priority, and updating the control view to output a control instruction. According to the method, the rotating speed and the residual capacity of the energy storage units in the flywheel energy storage array are monitored in real time, imbalance in the charging and discharging process is effectively recognized and processed, charging and discharging task distribution of the energy storage units is optimized through the updated energy distribution logic and the cooperative control priority sequence, and the operation stability and efficiency of the array are improved; the capability of the flywheel energy storage array to cope with abnormal conditions is enhanced, potential risks are avoided, the charging and discharging efficiency is improved, the long-term stability and safety of equipment are guaranteed, and resource allocation and energy conversion are optimized.

The application discloses a metro flywheel energy storage system with a direct current ice melting function, which comprises a medium voltage looped network, a contact network, a running rail and positive and negative bus lines, and further comprises a metro rectification module and a flywheel energy storage module; the metro rectification module is connected with the positive and negative bus lines; the positive bus line is connected with the contact network, and the negative bus line is connected with the running rail; the flywheel energy storage module is connected with the positive bus line, the negative bus line and the running rail respectively; the flywheel energy storage module is further connected with the contact network through a circuit breaker QF, and the contact network and the running rail are connected through a remote short-circuit switch K3. The application further discloses an ice melting and energy storage method using the metro flywheel energy storage system with the direct current ice melting function. The application has both the direct current ice melting function and the flywheel energy storage charging and discharging function, the two functions are time-multiplexed through switch control, efficient utilization of the equipment is realized, and the performance-price ratio is improved.

The invention discloses a flywheel energy storage offline dynamic test system and test method based on compressed air energy storage. A flywheel energy storage unit is used for executing charging and discharging operation under the simulated power grid working condition and receiving a dynamic performance test; the compressed air energy storage unit is used for providing the power supply / absorption capability of the simulated power grid for the flywheel energy storage unit in the test process; the energy management and cooperative control unit is used for cooperatively controlling energy flow between the compressed air energy storage unit and the flywheel energy storage unit according to a preset long-time-history complex dynamic power grid working condition curve; the data acquisition and analysis unit is used for acquiring operation parameters of the flywheel energy storage unit and the compressed air energy storage unit in real time and feeding back abnormal conditions recognized in real time in the testing process to the energy management and cooperative control unit; the compressed air energy storage unit serves as a controllable power supply / load, performance evaluation and optimization of the flywheel energy storage unit under the simulated complex power grid working condition are achieved, and the function of flexible switching of grid-connected / off-grid modes is achieved.

The invention discloses a dynamic test platform and a dynamic test method for a composite energy storage system based on cooperative interaction. The dynamic test platform comprises a flywheel energy storage unit, a compressed air energy storage unit, an energy management and cooperative control unit, a data acquisition and analysis unit and a grid-connected / off-grid mode main switch, the energy management and cooperative control unit is used for dynamically adjusting the running states and function roles of the flywheel energy storage unit and the compressed air energy storage unit; the data acquisition and analysis unit is used for acquiring full-dimension operation state parameters of the flywheel energy storage unit and the compressed air energy storage unit in real time so as to identify abnormal working conditions and feed back analysis results to the energy management and cooperative control unit, and a control strategy is optimized; and the grid-connected / off-grid mode master switch receives a switch control signal of the energy management and cooperative control unit so as to switch the operation mode of the composite energy storage system and perform electric energy exchange. High-precision and multi-mode dynamic testing between the two large energy storage systems is achieved, system performance can be evaluated, and a collaborative operation strategy can be optimized.

The invention provides an axial magnetic flux motor convenient for generating a flywheel energy storage device and an assembling method thereof, the axial magnetic flux motor comprises a shell, a rotating shaft, a plurality of rotors and at least one stator disc, the shell comprises an upper cover, a lower cover, end cylinders arranged at two axial ends respectively and a middle cylinder arranged between adjacent stator discs, the rotating shaft is arranged along the axial direction, and the rotating shaft is arranged along the axial direction. The upper cover and the lower cover are arranged in the shell and rotationally connected to the shell through bearings arranged at the positions of the upper cover and the lower cover, the multiple rotors are arranged in the axis direction of the rotating shaft at intervals and fixed to the rotating shaft in the circumferential direction, a gap used for containing the stator disc is formed between every two adjacent rotors, and the peripheral edge of the stator disc is clamped between every two adjacent barrels; according to the axial magnetic flux motor, the problems that in the prior art, an axial magnetic flux motor is difficult to assemble, sealing is complex, heat dissipation is limited, and light weight is insufficient are solved.

The invention provides an urban rail transit traction power supply flywheel energy storage and medium-voltage energy feedback collaborative optimization configuration method, and the method comprises the steps: introducing a flywheel energy storage unit FESE and an inversion energy feedback unit IEFE into an urban rail transit power supply system at the same time, and constructing an urban rail transit AC-DC hybrid power flow analysis model; taking the daily total cost and the static recovery period as targets to construct a comprehensive cost index; the number of FESEs and the number of IEFEs are used as discrete variables, a charging voltage threshold value and a discharging voltage threshold value of the FESEs and an action voltage threshold value of an inversion energy feedback unit are used as continuous variables, a hierarchical swarm intelligent optimization method is adopted, the purpose of minimizing a comprehensive cost index is taken as a target, and on the premise that the operation constraint of a power supply system is met, the power supply system is optimized. And outputting a collaborative optimization configuration scheme including the FESE number, the IEFE number and the sum of the FESE number and the IEFE number of the traction substations.

The application discloses a flywheel energy storage device and a control method of the flywheel energy storage device. The flywheel energy storage device comprises a rotor, a detection assembly, a adjusting assembly and the like. The detection assembly is arranged outside the rotor and is used for detecting whether the axis of the rotor is deviated. The adjusting assembly is in driving cooperation with the detection assembly and can drive the detection assembly to move along the radial direction of the rotor. The adjusting assembly is in driving cooperation with the detection assembly, and the adjusting assembly can drive the detection assembly to move along the radial direction of the rotor. Therefore, the machining cost can be reduced, the machining efficiency is improved, the flywheel energy storage device has real-time posture adjusting capability, and the self-adaptive posture adjusting capability of the flywheel energy storage device is improved.

The invention relates to the technical field of power system frequency modulation and energy storage cooperative control, and discloses a multi-time-scale layered frequency regulation control method and system of a wind storage system. The method comprises the following steps: constructing a multi-rate hierarchical control structure which comprises a high-speed execution layer and a low-speed operation coordination layer; modeling the wind power-flywheel energy storage combined frequency modulation system under a fast time scale and a slow time scale respectively, constructing an equivalent discrete state space model, and obtaining a coupling relationship between a fast dynamic state and a slow dynamic state; constructing an operation layer optimization control framework, and generating optimal frequency modulation reference power; constructing a time sequence difference error, and carrying out online updating on the Q function parameter by adopting a recursive least square method; and in the fast sampling period of the basic loop layer, designing a controller to realize fast and stable tracking of the basic loop layer on the reference power of the operation layer, and adopting model prediction control to improve the response speed for a slow dynamic object. The stability of adjustment and control of the energy storage system is improved.

The invention belongs to the technical field of energy storage, and discloses a flywheel superconducting energy storage device which comprises a vacuum shell, a flywheel energy storage module, a superconducting energy storage module, a cold energy module and a cooperative control module, advantage complementation of the superconducting energy storage module and the flywheel energy storage module is achieved through the cooperative control module, and quick response and long-time power supply are both considered. The cold energy module cools the superconducting energy storage module and the flywheel energy storage module at the same time, and the utilization rate of cold energy efficiency is improved. The system has the characteristics of compact structure, stable operation and multiple functions, and is suitable for various energy storage scenes such as power grid peak regulation and emergency power supply.

The swing-arm double-gear power transmission mechanism is a type of engine that eliminates the crankshaft structure of the traditional cylinder piston connecting rod crankshaft engine, replacing it with a swing-arm double-gear power transmission mechanism. This mechanism consists of a straight rod fixed to the piston, a U-shaped gear carrier fixed to the straight rod, and two fork plates under the U-shaped gear carrier, each with a long, narrow opening in the middle. At the rear end of each fork plate, there is also a shaft hole. Between the two fork plates of the U-shaped gear carrier, a pair of meshing gears are installed. A connecting plate is installed on each side of the gears, and each connecting plate has a shaft hole corresponding to the gear shaft position, allowing for sliding fit with the gear shaft or a rolling bearing fit. After passing through the connecting plates, both ends of the gear shaft are fixed to a pair of swing arms. The other end of the upper gear's swing arm is fixed to the power output main shaft and the flywheel energy storage sub-shaft, respectively. The lower gear's swing arm... At the other end, it engages with the shaft holes or rolling bearings on the two fork plates of the U-shaped gear carrier. Driven by the engine starter, the main shaft transmits rotation to the upper gear of this structure, which in turn transmits it to the meshing lower gear. This, in turn, drives the U-shaped gear carrier to move along the direction of the cylinder piston, preparing the engine for the four-stroke power stroke. When the engine ignites and begins the power stroke, the piston drives the U-shaped gear carrier, and through the initial operating mode, the gear set, in turn, pushes the main shaft to continue rotating in the direction it began to rotate, performing power. At the end of the power stroke, the flywheel releases its stored energy, continuing to complete the other strokes of the engine, forming a continuous cycle of power delivery. Because of this continuous cycle, the main shaft continuously outputs power, eliminating all the defects of traditional crankshaft engines. This swing arm double-gear power transmission mechanism has an extremely simple structure, reliable operation, is very easy to manufacture, process, install, and maintain, has low cost, and extremely high thermal efficiency. It is suitable for all applications and equipment using traditional cylinder piston crankshaft engines.

The application discloses a flywheel energy storage-based active quick-response frequency stabilization method and system for an isolated network, and relates to the field of power grid control.The method comprises the following steps: collecting a frequency signal of an isolated power grid in real time, fitting the frequency signal, and obtaining a smooth frequency value and a frequency change rate; when the absolute value of the frequency change rate exceeds a dynamic starting threshold, acquiring frequency deviation time series data of a preset time length to generate a disturbance event analysis window; extracting a frequency deviation signal in the disturbance event analysis window, performing time-frequency conversion on the frequency deviation signal, and generating a time-frequency spectrum diagram; based on the time-frequency spectrum diagram, decomposing the frequency deviation signal into a fundamental component and at least one overtone component, extracting a morphological feature parameter, and generating a disturbance image; setting a target state and a constraint condition of frequency recovery according to the disturbance image, determining a frequency recovery trajectory; and based on the frequency recovery trajectory, cyclically executing a control strategy until the power grid frequency is stabilized in a preset frequency range.

The invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage equipment predictive dynamic balancing device and system based on photon perception. The sensing module is embedded into the end face of the rotor body; the control module is connected with the sensing module to receive transmission; the execution module is arranged along the circumference of the rotor body and is connected with the control module so as to be driven by the control module; the safety mechanism is located in an annular cavity formed in the rotor body and connected with the rotor body so as to be driven by centrifugal force. The beneficial effects of the invention are that the photonic crystal fiber network unit collects rotor vibration, displacement, stress, temperature and other data in real time and predicts the unbalance trend, the control module generates an adjustment strategy, the execution module is driven to carry out counterweight compensation and unbalance correction, and the system is kept stable.

The utility model belongs to the field of flywheel energy storage, and particularly relates to an axial magnetic flux flywheel energy storage motor. The upper end cover and the lower end cover respectively cover the upper end and the lower end of the shell; bearings are arranged on the bottom surface of the upper end cover and the top surface of the lower end cover; the flywheel rotor, the upper end cover, the lower end cover and the shell are all made of magnetic materials; the two rotating shafts are respectively connected with the bearings of the upper end cover and the lower end cover; the stator core is arranged on the top surface of the lower end cover; the armature winding is arranged on the stator iron core; the outer magnetic ring and the inner magnetic ring are fixed on the bottom surface of the upper end cover, and the outer magnetic ring is sleeved on the outer circle of the outer magnetic ring; and the excitation winding is sleeved outside the flywheel rotor and is fixed on the inner wall of the shell. According to the utility model, the flywheel rotor is subjected to an axially upward electromagnetic force, the axial electromagnetic force on the flywheel rotor is kept unchanged during charging and discharging operation, only a pair of mechanical bearings is needed for positioning, and the motor is simple and compact in overall structure, low in cost and convenient to process.