41results about How to "Stable power" patented technology

The invention discloses a network construction type energy storage transient performance improving method and system, and the method comprises the steps: dividing a maximum current threshold value of an energy storage current converter in a transient state into a current under a dq coordinate system, calculating the total impedance required by current limiting through combining the component of the A-phase current output by the energy storage current converter on a d axis and the voltage difference between the two ends, setting the virtual impedance, and carrying out the current limiting through the virtual impedance. Virtual impedance is introduced into a current control link to realize over-current limitation; and the current control link outputs voltage, and the output voltage acts on the VSG power control link to realize power angle control. The system comprises a current control module and a power control module. According to the invention, through adaptive adjustment of the virtual impedance and correction of the active power instruction value, the overcurrent is effectively suppressed in the low voltage ride through process, and the power angle of the system is maintained to be stable, so that the transient performance of the network-forming type energy storage system is improved.

The invention discloses a frequency doubling laser power stabilizing system. Comprising a seed light source, a first polarization-maintaining 1 # imgabs0 # 2 optical fiber coupler, a first semiconductor pumping source, a first polarization-maintaining beam combiner, a first polarization-maintaining doped optical fiber, a second semiconductor pumping source, a second polarization-maintaining beam combiner, a second polarization-maintaining doped optical fiber, a polarization-maintaining 2 # imgabs1 # 1 optical fiber coupler, a periodic lithium niobate waveguide, a temperature control system, a second polarization-maintaining 1 # imgabs2 # 2 optical fiber coupler and a photoelectric detector. After being amplified by two paths of lasers, the seed laser is converted into frequency-doubled laser through a temperature-controlled frequency-doubling crystal, a part of frequency-doubled laser is acquired and is collected by a photoelectric detector for feedback, on one hand, the frequency-doubled laser is fed back to a second semiconductor pumping source for adjusting the laser amplification power, and on the other hand, the frequency-doubled laser is fed back to a frequency-doubled temperature control circuit for adjusting the laser amplification power. The method is used for adjusting frequency-doubled output power and realizing closed-loop stability of laser power. The output power stability of the frequency-doubled laser is improved, and the frequency-doubled laser is suitable for high-precision application scenes.

A super capacitor power grid current stabilization system comprises an AC bus, a medium-voltage transformer, a bidirectional converter, a bidirectional DC-DC, a super capacitor, a signal acquisition module and a signal processing module, the super capacitor is connected with the AC bus through the bidirectional DC-DC, the bidirectional converter and the medium-voltage transformer in sequence, the signal acquisition module is connected with the AC bus, and the signal processing module is connected with the signal acquisition module. And the signal processing module is connected with the bidirectional converter image. The system is used for adjusting AC bus power fluctuation suppression caused by IT load changes, the effect of power stabilization of a computing power data center power grid is achieved, and safe and stable operation of a power system is achieved.

The utility model relates to the technical field of electric power, in particular to an MPPT (Maximum Power Point Tracking) control system, which comprises a charging module, a detection module and a control module, the charging module comprises a solar panel and a battery pack, and an electronic switch is configured between the solar panel and the battery pack; the detection module is electrically connected to the two ends of the electronic switch, is provided with a voltage control unit and is used for monitoring the input voltage and the output voltage of the charging module in real time; one terminal of the control module is electrically connected to the electronic switch, the other terminal of the control module is electrically connected to the voltage control unit, and the control module is used for sending an input voltage value limiting command to the voltage control unit when it is detected that the input voltage drops; the detection module is provided with a current control unit, and the current control unit is electrically connected to the control module and used for enabling the voltage control unit and the current control unit to compensate the control module when the control module collects the input voltage. According to the utility model, the stability is improved, and the output power is maintained at the maximum value.

The application belongs to the field of vehicle-mounted refrigerators, and discloses a dual-temperature cooperative acquisition circuit, an intelligent temperature measurement method and a vehicle-mounted refrigerator, which comprise: a synchronous acquisition unit, which is used for synchronously acquiring temperature signals of at least two target regions of the vehicle-mounted refrigerator and outputting corresponding temperature analog signals; an anti-interference processing unit, which is connected with the output end of the synchronous acquisition unit and is used for filtering various interference signals in the vehicle-mounted environment; an adaptive signal conditioning unit, which is connected with the output end of the anti-interference processing unit and is used for adaptively amplifying, filtering and linearizing the temperature analog signals; a main control unit, which is connected with the output end of the adaptive signal conditioning unit and is used for digitizing the temperature signals, performing algorithm operation and logical control; and a wide-adaptive power supply unit, which is connected with the synchronous acquisition unit, the anti-interference processing unit, the adaptive signal conditioning unit and the main control unit and is used for providing a stable working voltage that is adapted to the vehicle-mounted power supply.

The invention relates to the technical field of power system load management, and discloses a multi-element load collaborative optimization regulation and control method, which comprises the following steps: acquiring multi-element load data through a monitoring and data acquisition device, and representing a multi-element load nonlinear regulation behavior; a core optimization variable is determined by adopting a quasi-inverse Harris eagle optimization algorithm, a regulation and control scheme on that day is updated in combination with a historical scheme, real-time data, electricity price and load prediction, and the QOHHO algorithm gives consideration to nonlinear characteristics of multiple loads and communication delay; a single-step improved QOHHO algorithm is adopted to generate a day-ahead regulation and control plan; and in consideration of the power exchange penalty cost caused by the load deviation, modeling communication delay by adopting a preset method, and compensating a load adjustment dead zone and a rate constraint deviation through the optimized TDOF controller. The method is applied to the power distribution network containing high-proportion renewable energy sources, collaborative optimization scheduling of industrial, commercial and resident multi-element loads is achieved, and the power balance capacity, the renewable energy source consumption rate and the operation economy of the power grid are improved.

The invention discloses an overheating protection early warning device and a high-low voltage power distribution cabinet, and the device comprises a housing, a plurality of second conductors and third conductors, interfaces disposed at the two ends of the housing, a first conductor connected with the interfaces at the two ends, an execution assembly fixedly connected with the first conductor, and an adjustment assembly for driving the second conductors and the third conductors to move. The second conductors are arranged on one side of the first conductor at intervals, the third conductors are arranged on the other side of the first conductor at intervals, and the execution assembly drives the adjusting assembly to enable the second conductors and the third conductors to approach the first conductor simultaneously. The executing assembly drives the adjusting assembly according to the temperature of the first conductor, when the temperature rises, the first conductor makes contact with the second conductor and the third conductor, the current circulation cross section is increased, resistance is reduced, heat production is reduced, and safety accidents such as equipment damage and fire disasters caused by overheating are effectively prevented.

The utility model relates to the technical field of myopia treatment, in particular to a myopia prevention and control therapeutic apparatus. The two ends of the bidirectional screw rod are respectively provided with a mounting seat, the mounting seats are in threaded connection with the bidirectional screw rod, and each mounting seat is detachably connected with an optical module; the guide piece is connected with the supporting frame, and the guide piece is used for enabling the mounting base to move in the axial direction of the two-way screw; and the driving mechanism is connected with the two-way screw and used for driving the two-way screw to rotate around the axial direction of the two-way screw. The two optical modules are driven to get close to or get away from each other in the axial direction of the two-way screw rod by rotating the two-way screw rod, so that the distance between the two optical modules is adjusted to adapt to different pupil distances, in the adjusting process, the optical modules move linearly, the distance between the optical modules and pupils can be kept unchanged, and therefore the distance between the optical modules and the pupils can be adjusted. Therefore, the size of a light spot generated by the optical module and the in-eye power can be kept stable.

An optimization method for stabilizing photovoltaic (PV) power generation fluctuations using distributed energy storage based on scenario sets is proposed. This method establishes a dispatchable capacity model for distributed energy storage based on its physical characteristics; establishes node voltage constraints and branch transmission capacity constraints for the distribution network; introduces reactive power regulation equipment to establish a dispatchable reactive power support range; and maintains power and voltage stability through distributed energy storage and various reactive power regulation devices while considering branch transmission capacity constraints. Finally, a coordinated optimization model for distributed energy storage based on PV power generation prediction scenarios is established. This invention prioritizes the basic safety of the distribution network and can be well applied to cities with abundant solar resources. By equipping distributed energy storage and certain reactive power regulation devices, it alleviates power and voltage fluctuations caused by intermittent PV power generation, thereby improving grid operational stability, reducing economic costs, and conserving resources.

The utility model discloses a motor load simulation device. The device comprises a shielding darkroom; the torque rotating speed sensor is arranged in the shielding darkroom; the left half coupling and the right half coupling are respectively provided with a through hole, the left half coupling is connected with the torque rotating speed sensor, and the right half coupling is used for connecting a power shaft of a motor to be tested; column bodies are arranged on the two sides of the disc-shaped transmission part, and the column bodies are inserted into the through holes of the left half coupling and the right half coupling respectively; the dynamometer is arranged in the shielding darkroom; the dynamometer and the torque rotating speed sensor are connected through a second coupler. And the torque rotating speed power measuring instrument is connected with the torque rotating speed sensor and is arranged outside the shielding darkroom. In the device, a disc-shaped transmission part is arranged between the left half coupling and the right half coupling of the first coupling, so that electromagnetic signals generated by the dynamometer and the torque rotating speed sensor are physically isolated from the motor to be tested, and the electromagnetic compatibility test result of the motor is prevented from being influenced.

The application discloses a floating offshore wind power device, which comprises a wind power mechanism and a floating foundation platform; wherein the floating foundation platform comprises a central column and a plurality of side columns which are arranged around the outer side of the circumference of the central column, and the central column and the side columns are fixedly connected through connecting assemblies; the wind power mechanism is fixedly connected to the upper end of the central column, and is used for converting offshore wind energy into electric energy; the lower end of each side column is fixedly connected with two heave plates which are arranged in an up-down mode, and the two heave plates have a preset distance in the vertical direction. The application can effectively reduce the motion response amplitude of the floating foundation platform, so as to ensure that the wind power mechanism can maintain stable wind power generation power and structural safety.

The invention discloses an ultrasonic welding machine control system, a control method and welding equipment, and the control system is connected with an output circuit and an ultrasonic welding machine; the control system is used for controlling an input electric signal of the ultrasonic welding machine and the air pressure proportional valve and comprises a first detection module, a second detection module and a control module, the second detection module is used for detecting a first electric signal of the output circuit; and the control module is used for dynamically adjusting the input electric signal and adjusting the opening degree of the air pressure proportional valve according to the first pressure and the first electric signal, so that the input electric signal is kept at a constant value, and the opening degree is kept at a constant value. According to the method, the welding workpiece is welded through the constant input electric signal and the opening degree of the air pressure proportional valve, the stability of the welding power and the welding pressure during ultrasonic welding can be kept, and the welding quality can be improved. The method can be widely applied to the technical field of welding.

This invention discloses a fast dynamic tracking method and system for radio frequency power supply frequency tuning. The method includes: S1 generating a frequency-modulated signal based on the carrier frequency and the modulation signal frequency; S2 coupling and sampling the radio frequency signal after power amplification of the frequency-modulated signal to extract three frequency components: a first frequency component, a second frequency component, and a third frequency component; S3 calculating the reflection coefficient amplitude values ​​at the corresponding frequency points of the three frequency components; S4 calculating the slope using the first and third reflection coefficient amplitude values; S5 calculating the frequency tuning step using the slope and the second reflection coefficient amplitude value; S6 tuning the carrier frequency based on the frequency tuning step to obtain the tuned carrier frequency; and S7 cyclically executing steps S1-S6 to output the optimal frequency. This invention provides accurate tuning direction determination, adaptive and adjustable step size, fast convergence speed, high frequency resolution, and the ability to rapidly and dynamically track changes in plasma load.

The invention discloses an intelligent electromagnetic balance energy-saving system, and relates to the technical field of intelligent power grids. According to the system, power grid operation data are collected and preprocessed into per unit values, equivalent reactance and the total reactive power vacancy of the system are calculated according to the per unit values, then the rated capacity of a reactive compensation device is combined, the reactive power vacancy of an inverter is calculated, inverter operation data and current collection line parameters are obtained, and first reactive power and second reactive power are obtained through preset operation; and finally, the bus voltage and the system power factor of the transformer after control are collected again, and an adjusting instruction is judged and generated according to the bus voltage and the system power factor. Reactive power compensation of the inverter is realized, output of the inverter is controlled to be optimal, influence of electromagnetism on a power grid is reduced, stability of voltage and power factors of the power grid is ensured, a control strategy can be automatically adjusted according to closed-loop design, and stability of the power grid and operation efficiency of the inverter are improved.

The invention relates to the field of laser processing, and discloses a gain optical fiber with low numerical aperture and stable absorptivity, an optical fiber laser and laser processing equipment, the gain optical fiber comprises a gain fiber core, a step layer and a cladding, the refractive index of the gain fiber core, the refractive index of the step layer and the refractive index of the cladding are sequentially reduced, the gain optical fiber has stable pump light absorptivity at the wave band of 900-1000 nm, and the step layer and the gain fiber core form a low numerical aperture structure. The gain optical fiber with low numerical aperture and stable absorptivity has high absorptivity for pump light in a wide wavelength range, the influence of the fluctuation of the central wavelength of the pump light on the light output power of the gain optical fiber is reduced, and the stability of the power output by the gain optical fiber is improved; the step layer is arranged between the cladding and the gain fiber core, so that the numerical aperture of the gain fiber core is reduced, the laser output with high beam quality is maintained, the unstable power threshold of a transverse mode is increased, and the optical coupling efficiency and the stability of the transverse mode output by the gain fiber are improved.

The present invention discloses an energy collection and vehicle fault monitoring system for active vibration reduction. In the present invention, the slide bar fixed on the upper pressure plate and the lower slide groove constitute a sliding pair; the slide bar is sleeved with a vibration reduction spring; one end of the left and right wing support plates are respectively hinged to the two sides of the lower slide groove; the left ratchet is hinged to the other end of the left wing support plate and connected through a left torsion spring; the right ratchet is hinged to the other end of the right wing support plate and connected through a right torsion spring; the middle of the left and right wing support plates are connected through a balance spring; the ratchet is fixed on the input shaft of a micro-generator; the power output end of the micro-generator is connected to an energy storage battery; the monitoring system collects the electrical signal output by the micro-generator, and monitors and analyzes vehicle faults. The present invention can collect vibration energy within half a cycle of vibration of the vehicle's entire suspension system, has a high energy conversion rate, and has an active vibration reduction effect, can provide a stable output voltage, and can perform fault detection of the vertical stiffness of the suspension without detecting the suspension system.

The application discloses a kind of radio frequency power frequency tuning fast dynamic tracking method and system.The method comprises the following steps: S1 generates frequency modulation signal based on carrier frequency and modulation signal frequency;S2 is coupled and sampled to the radio frequency signal after the power amplification of the frequency modulation signal, and three frequency components, namely first frequency component, second frequency component and third frequency component, are extracted;S3 respectively calculates the reflection coefficient amplitude value at the corresponding frequency point of the three frequency components;S4 calculates the slope using the first reflection coefficient amplitude value and the third reflection coefficient amplitude value;S5 calculates the frequency tuning step using the slope and the second reflection coefficient amplitude value;S6 tunes the carrier frequency based on the frequency tuning step to obtain the tuned carrier frequency;S7 cyclically executes steps S1-S6, and outputs the optimal frequency.The application is accurate in tuning direction judgment, adaptive in step, fast in convergence speed, high in frequency resolution, and can quickly and dynamically track the change of plasma load.

The invention discloses a power buffering system and method for high-power bidirectional wireless charging equipment, and relates to the technical field of wireless power transmission. According to the device, a super capacitor module and a power optimization controller are integrated on a receiving side, a high-power energy transfer buffer algorithm is carried, a super capacitor serves as an electric energy buffer of an energy storage battery of the device, the electric quantity of the battery and the charging and discharging power are stabilized, and high-power electric energy interaction between global power grids is achieved. And a DCDC output path is improved and designed, so that the problem of insufficient voltage of the super capacitor in a low-electric-quantity working condition is solved. According to the equipment, the problem that the battery is damaged by high-power charging when the battery is fully charged and high-power discharging when the battery is low can be solved, and the damage to the battery caused by over-charging, over-discharging, high-power charging and discharging and the like is reduced.

The invention relates to the technical field of wireless power transmission, and particularly discloses a static wireless charging system power regulation method and system, aiming at system output voltage fluctuation, a buck circuit is designed, system output voltage is detected in real time and further compared with reference output voltage, and the duty ratio of an MOS tube in the buck circuit is dynamically controlled in cooperation with a voltage loop, so that the static wireless charging system power regulation is realized. Dynamic constant-voltage regulation of the system output voltage is realized, so that the system output power is stable. Besides, on the basis of fluctuation of the inverter voltage of the transmitting end, voltage loop and current loop control is carried out by detecting high-frequency inverter output voltage and current in real time, stable output of the inverter voltage of the transmitting end is achieved, and further stabilization of the output power of the system is facilitated. A comparison result shows that the method and the system for adjusting the power of the static wireless charging system provided by the invention can quickly stabilize the output power of the static wireless charging system.

The invention discloses a virtual synchronous machine comprehensive control method based on optimal power compensation and inertia damping self-adaption, and belongs to the technical field of virtual synchronous machine control in a micro-grid. The method comprises the following steps: firstly, establishing a mathematical model of a virtual synchronous machine (VSG), analyzing the influence of parameters such as virtual inertia and virtual damping on system stability, and realizing online adaptive adjustment of virtual parameters based on a radial basis function neural network (RBF); and then, constructing a discretization prediction model according to an active-frequency relation of the VSG, setting an optimization target based on angular frequency deviation and output active power, designing a corresponding cost function, and solving an optimal power compensation amount through quadratic programming so as to adjust an active reference value of the VSG in real time. Compared with the prior art, overshoot and oscillation of power and frequency can be effectively restrained, the frequency change rate and deviation are reduced, and the power frequency response speed is increased.

A variable-pitch seawave power generation device and method. The seawave power generation device comprises an impeller (1) and a variable-pitch control system. The impeller (1) rotates about a vertical axis. The impeller (1) comprises a plurality of blade units distributed divergently from the center of the impeller (1), and the blade units extend radially. The variable-pitch control system can control blades (13) in the blade units to rotate along a horizontal axis to adjust a variable-pitch angle. The power generation device performs energy transfer with few steps, such that the energy loss can be reduced, and the energy utilization rate can be improved. The blades (13) of the impeller (1) can adjust their own pitch angle according to different seawave features to obtain the optimal power generation efficiency under a corresponding seawave condition.

This invention relates to the field of integrated layout and environmental safety control technology for electrochemical energy storage systems, proposing an all-vanadium redox flow battery system for underground space deployment and its environmental control method. The system includes modular cabin units, comprising a fuel cell stack cabin, an electrical cabin, and a liquid storage chamber. The fuel cell stack cabin connects the main exhaust channel (exhaust fan, anti-backflow components) to the controlled gas supply channel (filter assembly, electrically adjustable gas supply valve, pressure stabilizer), and is equipped with a pressure relief channel and a pressure release valve. A differential pressure measurement unit and a constant current sampling unit are configured to output the static pressure difference between the inside and outside of the cabin, gas concentration, and sampling validity. The main controller identifies disturbance conditions based on sampling validity and differential pressure change rate, and switches between pressure stabilization closed-loop and graded linkage control. Through gas path decoupling, reliable sampling, and coordinated anti-disturbance control, the system can reduce pressure difference and concentration distortion caused by ventilation / supply air disturbances in underground parking garages, reduce false triggering, missed triggering, and frequent oscillations, and improve system operational safety and control stability.

The utility model provides a thermal field structure and a single crystal furnace, and relates to the technical field of crystal preparation equipment. The thermal field structure comprises a base, a first separator, a heat preservation cylinder, a first heater and a crucible; the first separator is arranged on the base; the insulating cylinder is arranged at one end of the first separator away from the base; the first heater is arranged in the heat preservation cylinder; one end of the first heater away from the base has a heating part; the crucible is arranged in the first heater and corresponds to the heating part. The single crystal furnace comprises a thermal field structure. According to the thermal field structure, sparking caused by the fact that the distance between the first heater and the heat preservation barrel is too close or material blocking occurs between the first heater and the heat preservation barrel can be reduced.

This invention relates to the field of coal-to-methanol production equipment technology, and more particularly to a distillation column for separating crude methanol by-products from coal-to-methanol production. The column includes a pre-distillation column, a pressurized distillation column, and an atmospheric distillation column. An energy-saving control device is installed between the pressurized and atmospheric distillation columns. The power control device controls the steam output of the pressurized distillation column, and then valve two controls the liquid phase distribution to the atmospheric distillation column, thereby achieving equilibrium and effectively saving energy. A temperature compensation device is installed between the pressurized distillation column and the reboiler. This device includes a heat storage body installed on pipeline two, with an insulation layer outside the heat storage body. A temperature sensor is installed near the end of the heat storage body. The heat storage body can store heat when the steam flow is high, thus stabilizing the power of the reboiler and providing a buffer time for delayed feedback control, ensuring stable operation of the three columns.

The utility model discloses a high pressure spraying equipment of wet type dust removal belongs to spraying dust removal technical field, and its technical scheme main points include bottom plate, both sides of bottom plate top rear side all have the fixed block of shuanchang, the inside of fixed block is provided with telescopic link, the top of telescopic link is provided with angle regulation spraying assembly, the top of bottom plate is provided with constant pressure stabilization subassembly, angle regulation spraying assembly includes two mounting plates, and the bottom of two mounting plates respectively with corresponding telescopic link top shuanchang, has solved the existing spraying dust removal equipment mostly fixed installation, faces different height's spraying dust removal, cannot nimblely apply, on the other hand, the angle of spraying is mostly fixed and cannot very good angle adjustment of dust removal spraying for the source of dust, also cannot swing back and forth through the spraying head and increase the area of dust removal water mist, and when facing the problem that the water pressure of spraying is not stable, cannot carry out effective adjustment.

The invention relates to the technical field of air conditioners, and provides an oil return control method and device of a solar air conditioner and an air conditioning system.The method comprises the steps that when the solar air conditioner is in a low-frequency running state, whether a preset oil return triggering condition is met or not is judged; when conditions are met, the current oil temperature of refrigerant oil is obtained; when the oil temperature is smaller than a preset oil return temperature threshold value, a stepped frequency increasing strategy for the compressor to enter an oil return mode is determined, and the compressor is controlled to operate according to the stepped frequency increasing strategy; and if the solar power supply system does not meet the power required for maintaining the operation of the stepped frequency raising strategy, triggering the multi-energy complementary machine. The compressor is controlled to gradually increase the frequency according to the stepped frequency increasing strategy, so that the frequency of the compressor is in smooth transition, transient load impact in the oil return process is buffered, stable operation of the compressor is guaranteed, and the service life of an air conditioning system is prolonged; and auxiliary energy is introduced through a multi-energy complementary mechanism for power compensation, stable power supply in the oil return process is guaranteed, and then the operation reliability of the system is improved.

This disclosure relates to a method, device, medium, and vehicle for monitoring boost charging power. The method includes: acquiring real-time power during continuous charging; determining power fluctuations based on the real-time power; determining whether a single power fluctuation exceeds a preset power fluctuation value and the number of consecutive occurrences exceeds a first preset number of occurrences based on the power fluctuations; and identifying the maximum available power when a single power fluctuation exceeds the preset power fluctuation value and the number of consecutive occurrences exceeds the first preset number of occurrences. Based on this, a method for identifying power oscillations during boost charging is provided, enabling the identification of potential power oscillations during charging, thereby facilitating further power stabilization, mitigating the impact of power oscillations on the charging system, and extending the service life of the charging pile.

The present invention relates to a shore-based variable frequency power supply micro-power consumption full-power test method and system under weak power grid conditions, wherein the power supply variable frequency power supply V1 includes a frequency converter VFP1, the shore-based variable frequency power supply V2 includes a frequency converter VFP2, the energy-feeding load power supply V3 includes a frequency converter VFP3, the input end of the frequency converter VFP1 is connected to the shore-based high-voltage power supply, the output end of the frequency converter VFP1 is connected to the input end of the frequency converter VFP2, the output end of the frequency converter VFP2 is connected to the input end of the frequency converter VFP3, and the output end of the frequency converter VFP3 is respectively connected to the output end of the frequency converter VFP1 and the input end of the frequency converter VFP2; the energy-feeding load power supply V3 is used as a simulated load to test the shore-based variable frequency power supply V2, and after the shore-based variable frequency power supply V2 is tested, the shore-based variable frequency power supply V2 is put into use. The advantages of the present invention are: after the test loop forms a loop, no actual work is required, only the current needs to be increased to a predetermined test value, the energy consumption is small, and the power grid does not need to provide a large capacity.

The application provides a device and method for removing residual adhesive layer of a flat wire stator of a vehicle. The device comprises a control processing module, a carbon dioxide laser, a beam splitter, a beam expander, a galvanometer and a field lens connected in sequence. The method comprises the following steps: clamping and fixing the flat wire stator at a predetermined position; starting the carbon dioxide laser to emit carbon dioxide laser with a center wavelength of 10.6 microns, which sequentially passes through the beam splitter, the beam expander, the galvanometer and the field lens, and is incident on the end face of the flat wire stator at an oblique angle to gasify the residual adhesive layer; operating the galvanometer to remove the residual adhesive layer; and removing the flat wire stator. The application can avoid damage to silicon steel sheets caused by manual removal of the residual adhesive layer and burning of the trace two-dimensional code during removal of the residual adhesive layer, and realizes efficient removal of the residual adhesive layer and stable laser power.

The invention discloses a transient unbalance high-voltage ride-through method and device for a direct-drive permanent magnet wind generating set, and relates to the technical field of safe and stable operation of wind power generation in new energy, and the method comprises the steps: constructing a virtual synchronous generator model of an inverter; based on the virtual synchronous generator model of the inverter, performing unbalance analysis on a grid-connected point of the direct-driven permanent magnet synchronous generator set by using an instantaneous symmetric component method and Clark coordinate change, and determining complex power; constructing a positive and negative sequence voltage-current double closed-loop control strategy; a current inner loop in the positive and negative sequence voltage-current double closed-loop control strategy is optimized into sliding mode control, and a positive and negative sequence voltage-current double closed-loop sliding mode control strategy is obtained; executing a positive and negative sequence voltage-current double closed-loop sliding mode control strategy based on a maximum torque control mode; according to the invention, a positive and negative sequence voltage-current double closed-loop control strategy is constructed. While the high-voltage fault ride-through capability of the wind generating set is improved, the frequency stability capability is maintained.