49results about How to "Suppress fluctuations" patented technology

The invention provides a control method of a high-gain image sensor, which is characterized in that a column bias current source and a column PMOS (P-channel Metal Oxide Semiconductor) amplifier tube are arranged in a column signal reading unit, the column bias current source is connected with a current output connecting line shared by a column, and a drain electrode of the column PMOS amplifier tube is connected with a current input connecting line shared by the column; the grid electrode of the column PMOS amplifier tube is connected with the common current output connecting line of the column directly or through a capacitor, and an amplified signal of a floating diffusion region of a read-out pixel unit can be obtained on the common current input connecting line of the column, so that the ultrahigh conversion gain is realized, and the dynamic range in a dark light scene is expanded; the size of a device structure in the column signal reading unit can be far larger than that of a transistor in a pixel, the process consistency is better, and the conversion gain can be adjusted more flexibly; the switching between the SHCG mode and the STD mode is realized by driving the switch module in the column signal reading unit, the impact on a power supply and the ground is smaller during operation, and the circuit stability is improved.

The invention discloses a method for realizing re-identification of a clothes changing person based on interference factor isolation, and relates to the technical field of intelligent image processing, and the method comprises the steps: obtaining a to-be-queried image and an image library image set; inputting a to-be-queried image into the trained clothes changing model to obtain a to-be-queried feature vector, and inputting the image library image set into the trained clothes changing model to obtain a screening result feature vector set; respectively calculating the distance between the to-be-queried feature vector and each screening result feature vector in the screening result feature vector set to obtain a plurality of distance sets; determining a minimum value in the plurality of distance sets, and determining a screening result feature vector corresponding to the minimum value; determining an image library image set image corresponding to the to-be-queried image according to the screening result feature vector; the extracted features can neglect the difference between the clothes and the camera, so that whether the two images belong to the same pedestrian or not is effectively distinguished.

The invention relates to ore pulp mother liquor separation equipment, and belongs to the technical field of ore pulp treatment. Comprising an equipment body which forms a cavity; the flow stabilizing assembly is arranged in the cavity in a sliding mode; the cavity is divided into a first cavity body and a second cavity body which are independent from each other by the flow stabilizing assembly; the first cavity is connected with a liquid inlet assembly; the flow stabilizing assembly floats along the axis of the equipment body under the control of the liquid level height of the mother liquid in the first cavity; the second cavity is provided with an air pressure control assembly, the air pressure control assembly is configured to release air in the second cavity, and the air release flow Q is in negative correlation with the pressure P in the second cavity; and the ultrasonic assembly is arranged at the bottom of the equipment body. Under the condition of high liquid level, the flow stabilizing assembly can more effectively inhibit the fluctuation of the liquid level, so that the mother liquor separation process is stable and efficient, and the problem of poor separation effect caused by the fluctuation of the liquid level due to ultrasonic waves in the prior art is solved.

The embodiment of the invention discloses a peak clipping and valley filling photovoltaic energy storage system in a general alternating current power supply scene, which relates to the technical field of electronic power and comprises a peak and valley energy storage system, a photovoltaic system, a mains supply and an original power supply system, the peak-valley energy storage system comprises an energy storage battery unit, a bidirectional DC / DC converter and a bidirectional inverter. The energy storage battery unit is connected with the bidirectional DC / DC converter; the direct current side of the bidirectional inverter is connected with the photovoltaic system and the bidirectional DC / DC converter, the alternating current side of the bidirectional inverter is connected with the mains supply and the original power supply system, and when power generation of the photovoltaic system is excessive, the photovoltaic system can charge the energy storage battery unit through the bidirectional DC / DC converter; when the photovoltaic system is insufficient in power generation, the energy storage battery unit can supply power to the original power supply system through the bidirectional DC / DC converter and the bidirectional inverter, so that the disposal rate of the photovoltaic system can be effectively reduced, and the problem of dislocation of new energy and power utilization peak is solved.

The invention provides a dead zone compensation method based on three-phase current estimation, and the method comprises the following steps: carrying out the preprocessing and estimation of three-phase current: filtering harmonic components of three-phase current ia, b and c, and obtaining three-phase current ia, b and cBase only containing a fundamental component; calculating the three-phase current ia, b and cT0 at the starting moment and the three-phase current ia, b and cT1 at the ending moment of the next control period by using ia, b and cBase; current polarity judgment: according to ia, b, cT0 and ia, b, cT1, utilizing a sign function to judge the polarity of the three-phase current; compensation mode selection and calculation: selecting a dead-zone voltage compensation mode or a dead-zone duty ratio compensation mode through a dead-zone compensation mode selector according to requirements, and calculating a voltage compensation value or a duty ratio compensation value; and taking the obtained voltage compensation value or duty ratio compensation value as the input of ia, b and cBase. Through filtering harmonic current, on the basis of estimating three-phase current values at the starting moment and the ending moment of the next control period, accurate determination of phase current polarity is realized, and accurate compensation of a dead zone effect can be further realized.

The invention relates to the technical field of offshore wind power, in particular to a truss type offshore floating type wind power foundation platform which comprises a bottom frame, a wind turbine generator set, a floating type foundation and a three-dimensional truss structure, the three-dimensional truss structure comprises a truss body, floating boxes, a bottom box, a mooring turret and a mooring system, the floating boxes are fixed to two vertex angles of the bottom frame, and the bottom box is fixed to the bottom box. The mooring turret is fixedly connected to the other vertex angle, the bottom box is fixedly connected with the three vertex angles of the bottom frame, and the truss body is fixedly installed on the upper surface of the buoyancy tank. Large heave damping is formed through the floating type foundation and disturbance of surrounding seawater, fluctuation and swaying of the floating type foundation under the influence of environmental loads are restrained, a mooring system is arranged to passively and coaxially rotate around a mooring single point under the action of wind power, wind wheels of draught fans are kept to face the wind all the time, and by independently adjusting the output power of the two draught fans and the resistance of the wind wheels, the wind power generation efficiency is improved. The passive yaw function is actively intervened, and the maximum power generation efficiency is obtained through the maximum wind sweeping area.

The invention discloses an NLADRC voltage control method of a high-efficiency power converter for an electric vehicle, and relates to the technical field of NLADRC voltage control of the high-efficiency power converter for the electric vehicle, and the method comprises the steps: building a CLLLC resonant converter equivalent model based on a fundamental wave analysis method; solving a voltage gain by adopting a linear circuit solving method through an FHA equivalent model of the CLLLC resonant converter; and an improved anti-integral saturation NLADRC voltage control strategy is established. According to the method disclosed by the invention, the anti-interference capability and the stability are remarkably improved by applying an improved anti-integral saturation nonlinear active-disturbance-rejection control strategy. By using a nonlinear filtering function, the strategy effectively suppresses fluctuation in response, accelerates the stabilization speed, and improves the stability and robustness of overall control.

The invention discloses a liquid crystal display circuit, a display panel and display equipment, and relates to the technical field of display, the circuit comprises a pixel array, the pixel array comprises column pixel units taking columns as units and row pixel units taking rows as units; each data signal line provides a data signal for the corresponding column pixel unit, and the polarities of the data signals provided by the adjacent data signal lines are opposite; a plurality of first gate lines, wherein each first gate line provides a first gate driving voltage for the pixel points connected with the first data signals in the corresponding row of pixel units for charging; a plurality of second gate lines, wherein each second gate line provides a second gate driving voltage for the pixel points connected with the second data signals in the corresponding row of pixel units for charging; wherein the polarity of the first data signal is opposite to that of the second data signal, and the liquid crystal display circuit aims at improving the display quality of an LCD product applied to the liquid crystal display circuit.

The invention relates to the field of position sensors, in particular to a linear position sensor. The device comprises a shell and a support connected to the shell. The middle of the support is provided with a PCB, the bottom is provided with a magnet and a chip, and the top is provided with a metal terminal. The middle of the magnet is hollowed out, and a groove is formed in one side of the magnet for mounting the sensing unit of the chip; the chip is connected with one end of the PCB; and the metal terminal is connected with the other end of the PCB. Through collaborative innovation of a magnetic circuit, a circuit and a mechanical structure, comprehensive performance improvement of high precision, high reliability, strong anti-interference capability and wide environment adaptability is realized.

The invention relates to the technical field of aircraft control, and particularly discloses a disc-shaped fire extinguishing aircraft attitude control method based on visual localization, and the method comprises the steps: carrying out the analysis of the dense smoke distribution type in an edge precise region in the fire extinguishing process of the edge precise region of a forest fire through a fire extinguishing aircraft, and obtaining a fire extinguishing result; and when the dense smoke distribution type of the region is determined to be non-uniform distribution, carrying out high-temperature thermal distortion analysis on the edge precision sub-regions divided in the edge precision region, and screening out the high-concentration thermal distortion sub-regions and the low-concentration thermal distortion sub-regions, so that regions which have relatively large threats on visual positioning and flight safety of the aircraft can be accurately positioned, and the accuracy of the aircraft visual positioning and the flight safety can be improved. An aircraft operator or an intelligent control system can clearly know the danger distribution condition of a fire scene, and in the process that the aircraft enters the high-concentration thermal distortion subarea from the low-concentration thermal distortion subarea, data support can be provided for early warning of aircraft flight attitude adjustment.

The application discloses a left-right double-head laser automatic welding jig system and a welding method, relates to the technical field of laser welding, and is suitable for automatically loading two sheet metal bending pieces in a left-right balanced arrangement mode, and then performing laser welding on the left-right corner joint seams of the sheet metal bending pieces in the jig. The system comprises a jig body, an opening and closing mechanism, a seam-reducing and pressing mechanism, left-right double laser welding heads, a detection interlocking unit and a control unit. The jig body is provided with a bearing platform, a fixed reference piece and a center limiting piece. The sheet metal bending pieces are sleeved on the fixed reference piece. The center limiting piece is located between the two sheet metal bending pieces and presses the two sheet metal bending pieces outward in an elastic sliding mode. When the in-place state of the opening and closing mechanism and / or the seam-reducing and pressing mechanism and the gap value of the corner joint seam meet the preset welding conditions, the control unit triggers the left-right double laser welding heads to perform synchronous welding, and when the conditions are not met, the control unit implements ignition interlocking. Therefore, the stability of the corner joint seam and the welding quality consistency are improved.

The invention provides a transformer bushing partial discharge mode identification method and system, and relates to the technical field of power system fault diagnosis. Comprising the steps of obtaining transformer bushing partial discharge signals and extracting original features; carrying out dimension reduction processing on the extracted original features to obtain features after dimension reduction; a radial basis function SVM model is constructed, and parameters of the radial basis function SVM model are optimized through a GTO algorithm optimized by the chimpanzee troops; and inputting the dimensionality-reduced features into a parameter-optimized radial basis function SVM model for classification to obtain a classification identification result. According to the method, the KPCA algorithm and the GTO-SVM algorithm are combined, KPCA dimension reduction processing is carried out on high-frequency signal features, data redundancy is reduced, SVM parameter selection is optimized through the GTO algorithm, the classification and recognition performance is remarkably improved, the high recognition rate is shown in partial discharge fault diagnosis, and particularly the method has remarkable advantages in the aspect of processing complex fault modes.

Object Provided is a power generation function-equipped secondary battery that can achieve stable power generation. Solution A power generation function-equipped secondary battery 100 using a thermoelectric element 1 includes the thermoelectric element 1 that is in contact with a heat medium 3 indicating a temperature equal to or higher than a temperature of outside air and does not require a temperature difference between electrodes, and a secondary battery 2 electrically connected to the thermoelectric element 1, in which the thermoelectric element 1 includes a pair of electrodes 11 and 12 having work functions different from each other. For example, the thermoelectric element 1 includes an intermediate portion provided between the pair of electrodes 11 and 12 and including a non-conductor layer containing fine particles, and the non-conductor layer supports the pair of electrodes 11 and 12.

The embodiment of the application provides a visual object recognition method and system. The visual object recognition method comprises: acquiring an image to be recognized; generating a plurality of enhanced views based on the image to be recognized; inputting each enhanced view into a corresponding visual recognition sub-model respectively to obtain a recognition result of the visual recognition sub-model; and performing fusion processing on the recognition result of the visual recognition sub-model to output a category recognition result of a target object in the image to be recognized. The embodiment of the application trains a plurality of differentiated sub-models through cross-validation combined with multiple random seeds, thereby reducing the dependence on single data division and random initialization. During inference, a plurality of enhanced views of the same image are recognized and the results are fused, thereby enhancing the adaptability of the model to view changes, improving the generalization under data distribution difference, and suppressing the fluctuation caused by training randomness, so that the stability of the recognition precision is improved.

The invention relates to a compact railway energy regulation and control complex and a control method thereof, the compact railway energy regulation and control complex comprises a converter unit with an intermediate frequency transformer as a core, and a magnetic field hedging decoupling inductor of the intermediate frequency transformer and a filter capacitor form a secondary harmonic filter branch on the direct current side of the converter unit. And second harmonic components at the direct current side of each current conversion unit in the single-phase current conversion system are filtered out. The compact railway energy regulation and control complex uses control methods such as double-phase displacement control and passive control, can accurately control power flow distribution of two power supply arms, realizes primary side three-phase current balance control of a traction transformer, and uses a control method based on an integral linear secondary regulator LQRI to carry out comprehensive regulation and control of energy. The voltage fluctuation of the feeder line side can be effectively inhibited, and the comprehensive energy utilization rate and the new energy consumption rate of the electric railway system are improved. Due to the existence of the intermediate frequency transformer, compared with an electric energy regulation and control device taking a traditional railway power regulator as a basic topology, the compact railway energy regulation and control complex has higher integration level.

The present invention proposes an intelligent anti-interference wireless charging school bus control system and method based on AI large model analysis, which belongs to the field of wireless charging control, including: a wireless charging control unit, which is configured to use a constant voltage filter cascade self-anti-interference control strategy to wirelessly charge the school bus; a data acquisition and transmission unit, which is configured to collect school bus operation data in real time, and transmit the school bus operation data to a central data processing platform for data processing; an artificial intelligence analysis unit, which is configured to perform multi-dimensional analysis on the school bus operation data after data processing based on the AI ​​large model, and generate an intelligent scheduling strategy; a cloud application interface, which is configured to transmit the intelligent scheduling strategy and the school bus operation data after data processing to a mobile terminal, and the operator performs real-time query and use through the mobile terminal; an intelligent scheduling execution unit, which is configured to transmit the intelligent scheduling strategy to the school bus driver, and the school bus driver allocates resources according to the intelligent scheduling strategy. This application effectively suppresses interference and fluctuations during the charging process, and performs intelligent analysis on the school bus operation data, realizes real-time dynamic scheduling, improves the school bus operation efficiency, and optimizes resource allocation.

The present invention relates to the technical field of air conditioning temperature control, and in particular to a temperature control method, electronic device and storage medium based on heat load compensation. The method of the present invention first obtains multiple set values; then determines multiple short-term target values ​​according to the multiple set values ​​and multiple measured values; then determines multiple external disturbance estimation values ​​and multiple time delay characteristic values ​​according to the multiple measured values ​​and multiple actual action values; finally, determines multiple first action values ​​and multiple action compensation values ​​according to the multiple short-term target values, multiple measured values, multiple time delay characteristic values ​​and the multiple external disturbance estimation values, and determines the output of the central air conditioner according to the multiple first action values ​​and the multiple action compensation values. The embodiment of the present invention determines the time delay characteristics and external disturbance estimation through correlation analysis based on the measured values ​​and the actual action values. When controlling based on the time delay characteristic values, overshoot can be suppressed, and compensation based on the external disturbance estimation can speed up the response speed.

The invention discloses a narrow-linewidth single-longitudinal-mode seed laser system and a generation method. The narrow-linewidth single-longitudinal-mode seed laser system comprises a VCSEL laser, a polarization-maintaining beam splitter, a reflector and a half-wave plate. A light beam emitted by a VCSEL laser is firstly divided into a TM mode light beam and a TE mode light beam through a polarization-maintaining beam splitter. A plurality of reflectors are arranged on the propagation path of the TM mode light beam and the TE mode light beam, and the design of the reflectors enables the light beams of the two modes to form an annular loop. And a half-wave plate is arranged on the annular loop so as to regulate and control the polarization state of the light beam. Through the arrangement of the system, narrow-linewidth (about 1MHZ) single-longitudinal-mode seed laser can be generated, and a high-quality light source is provided for the fields of optical communication, spectral analysis and the like; meanwhile, the structure is simple, implementation is easy, and implementation complexity and cost of the narrow-linewidth single-longitudinal-mode seed laser are reduced.

The invention belongs to the technical field of high-speed aircraft structure thermal tests, and particularly relates to a high-speed aircraft structure thermal test heating system which comprises a quartz lamp tube, a silicon controlled rectifier, a controller, a first thermocouple and a second thermocouple. A plurality of quartz lamp tubes are arranged side by side and are arranged close to the test piece; the first thermocouple is arranged on the test piece; the second thermocouple is suspended between the quartz lamp tube and the test piece; the thyristor is connected with the quartz lamp tube; the controller is connected with the first thermocouple, the second thermocouple and the quartz lamp tube; the controller, the first thermocouple and the quartz lamp tube form outer ring indirect negative feedback control for controlling the temperature of the test piece; the controller, the second thermocouple and the quartz lamp tube form inner ring direct negative feedback control for controlling the temperature of a suspension point; the outer loop indirect negative feedback control takes the target temperature of the test piece as a control target value, and the inner loop direct negative feedback control takes the output value of the outer loop indirect negative feedback control as a control target value.

The invention provides a fluctuation suppression method and device applied to a direct-current brushless servo motor. The method comprises the following steps: executing the following cycle operation until a cycle termination condition is met: reading a current phase zero parameter currently used by the servo control system and taking the current phase zero parameter as a first parameter; obtaining an operation fluctuation level of the motor in a preset time window; judging whether the operation fluctuation level meets a preset stability requirement condition or not; and when the operation fluctuation level does not meet the stability requirement condition, replacing a current phase zero point parameter used by the servo control system from a first parameter to a second parameter. Wherein the current phase zero point parameters used by the servo control system have 2N selectable parameters, and N is the number of magnetic pole pairs of the direct current brushless servo motor; the cycle termination condition comprises that the operation fluctuation level meets the stability requirement condition, or the unused current phase zero point parameter does not exist in the 2N selectable parameters.

The present invention addresses the problem of providing a monitoring device and a monitoring method capable of suppressing fluctuation of molten metal or gas entrainment into the molten metal by monitoring the shake of the molten metal in a plunger sleeve during a low-speed injection period at the initial injection stage of an injection molding machine and controlling the injection speed on the basis of the monitoring result. A monitoring device according to the present invention is provided with: an acquisition unit that acquires acceleration information of a plunger during an injection operation; a determination unit that determines the shake of the molten metal in the plunger sleeve on the basis of information relating to the acceleration in the direction of travel of the plunger from the start of injection of the molten metal in the plunger sleeve by the plunger to a predetermined period among the acceleration information; and an output unit that outputs the determination result of the shake of the molten metal.

The invention relates to the crossing field of mechanical engineering and process control, and discloses a dynamic dry-steaming calcination temperature self-adaptive control method for gypsum production. The method comprises the following steps: collecting material temperature, furnace body total mass, waste gas humidity and flow and heating power data in real time; the real-time equivalent specific heat capacity and the dehydration degree of the gypsum are estimated on line based on multi-source data; constructing and updating a dynamic thermodynamics prediction model; solving an optimal heating power sequence by adopting a model predictive control algorithm so as to accurately track a target temperature curve; and taking the condition that the real-time dehydration degree reaches a preset threshold value as a calcination end point criterion. According to the technical scheme, self-adaptive response to material thermal characteristic changes is achieved, and the temperature control precision, the energy efficiency and the product quality stability are improved.

A light emission unit 20 that condenses and emits a laser beam to a specific region in a subject portion Mp0, the specific region being present in skin located on the reverse side of a living body OB from a skin surface on a side of the living body facing a main surface 10a of a base 10, a photodetector 30 that, on the main surface-side of the base, receives signal light having lower light intensity than the laser beam in some wavelengths and detects an intensity thereof, a lens 40 that is disposed in a position where a focused image of the signal light from a laser-beam condensing region FA can be formed on the photodetector, and a measurement controller 60 that measures a concentration of a substance in blood based on the intensity of the signal light are provided. An angle A formed by a normal to the surface of the skin of the subject portion and an optical path of the laser beam L1 is different from an angle B formed by the normal and an optical path of the signal light L2 from the laser-beam condensing region to the photodetector. A focused image is formed on a light receiving surface of the photodetector by the lens from an image of the signal light from a blood-vessel region Mp overlapping the laser-beam condensing region.

The present invention proposes a reactive voltage control method and system for rapidly suppressing transient voltage, the method comprising: the wind farm AVC calculates the reactive power to be adjusted by the wind farm according to the received target voltage command, generates a reactive power command and sends it to the wind turbine group, and calculates the voltage value of the low-voltage side of the main transformer of the reactive compensation device according to the main transformer parameters of the wind farm, generates a voltage command and sends it to the reactive compensation device; the reactive compensation device performs reactive adjustment according to the voltage command, tracks and controls the grid connection point voltage, and adjusts and suppresses when transient voltage occurs; the wind turbine group performs reactive adjustment according to the reactive command, performs reactive replacement of the reactive compensation device during the reactive adjustment process of the wind turbine group, and maintains a certain reactive margin of the reactive compensation device. The method and system can ensure that the wind farm has the tracking and adjustment capability in steady state, and can also perform rapid tracking and adjustment when transient fluctuations occur in the system voltage, so as to stabilize the grid voltage.

This invention discloses an automated control method and system for the production of spandex spinning oil. The method uses a DCS (Distributed Control System) to detect and self-check the tank level, utilities, and pump / valve status. Upon successful self-check, production access is unlocked; otherwise, it is locked and an alarm is triggered. After unlocking, process parameters from the formula library are retrieved. Material is weighed via a variable frequency pump PID controller linked to a weighing sensor, and the feed flow rate is controlled by fuzzy PID, following the feeding sequence and timer intervals. The DCS issues a grinding command, collecting particle size data in real time; if the particle size does not meet the standard, the grinding time is extended until it does. Heating and stirring are initiated based on the mixing tank level signal, with timed temperature increases to the set value and then maintained. After the two processes are completed, the ground material is fed into the mixing tank for secondary stirring. Successful sampling triggers filling, with fuzzy PID controlling the filling flow rate. Once the liquid level is reached, the valve is closed, and a delayed cleaning process is initiated. After filling is complete, the entire line is shut down. This invention solves the problems of fixed PID control parameters and insufficient interlocking of all processes in traditional PID control methods.

The invention discloses an indoor positioning method combining a base station screening strategy and a neural network, and the method comprises the steps: judging whether there is an NLOS base station of which the signal propagation is blocked due to the obstruction of an obstacle or not through a rapid detection algorithm link; in the base station screening algorithm link, the base stations are divided into a plurality of subsets, the estimated positions of the rss subsets of the base stations without NLOS tend to form dense clusters, the estimated positions of the RSS subsets are grouped according to the clusters, the dense clusters are detected, and the centroid positions of the dense clusters are returned to determine reliable positioning results; the NLoS base station is identified by calculating the frequencies of all the base stations appearing in the reliable result; in the step of optimizing the BP neural network distance measurement by using the crown porcupine algorithm, a CPO-BP neural network is established to construct a distance measurement model by using the advantage that the neural network can effectively capture a nonlinear relationship, so that the relationship between the RSSI and the distance in a complex environment is accurately captured, and the positioning precision is effectively improved.

The application discloses a heterogeneous network communication link determination method, a device network configuration method, device and system, and belongs to the communication field. The target matching degree of the available path is determined based on the evaluation indexes of signal strength, response time delay and power consumption, and the communication link with the highest target matching degree is taken as the target communication link. The weight is obtained by calculating the proportion and entropy value of the standard signal strength, standard time delay and standard power consumption respectively, the optimal value and the worst value are determined for the weighted index, the positive ideal solution distance and the negative ideal solution distance are calculated accordingly, and the closeness at the current moment is smoothed to obtain the smoothed closeness as the target matching degree, so as to suppress the fluctuation and make the link selection more stable. When the device is configured, whether it is the same type of device and the once configured device is judged according to the local historical network configuration record, if so, the latest network configuration record is directly used to speed up the access; after the network configuration is completed, the characteristics of the message are extracted, the protocol type is automatically identified, and the device access efficiency is improved.

The application discloses a kind of inhibiting to send air automatic control system and method of unit disturbance of powder feeder lower powder not smooth, including total air volume reference instruction formation loop, RB air volume reference instruction formation loop, total air volume reference instruction disturbanceless switching loop, oxygen amount correction loop, corrected total air volume instruction formation loop, modified variable load feedforward formation loop, limit before total air volume instruction formation loop and total air volume instruction formation loop.The application can reduce the fluctuation of furnace pressure, main steam temperature, reheater temperature and other parameters;Air supply control can be fully invested in automatic operation mode, greatly reducing the amount of operation personnel operation;When unit RB acts, it can quickly switch to the small value of RB target air volume instruction S6 and total air volume reference instruction S1, meet the air volume demand of RB process, while ensuring that air volume has no possibility of up-regulation;Avoid total air volume instruction to cause total air volume instruction to decrease too slowly due to RB process actual load drop too slowly, unstable combustion and other serious threats to safe operation of unit phenomenon.

The invention discloses an improved C-dump converter energy and signal simultaneous transmission strategy. In order to solve the problem that energy in a follow current stage of a traditional C-dump converter can only be fed back to an excitation power supply and power generation energy output cannot be realized, a follow current loop suitable for a power generation state is constructed by adjusting the connection position of an energy storage capacitor in a circuit, so that the control independence of each phase is maintained and the use of devices is not increased; and effective output of power generation energy is realized. The flyback converter is adopted to widen the voltage output range and reduce the output voltage fluctuation at the same time. In order to realize synchronous transmission of energy and signals, a frequency shift keying modulation method is used, and ripple signals containing communication data are embedded in output voltage; and a receiving end performs information demodulation by using fast Fourier transform, so that an information transmission system is simplified. According to the scheme, the system complexity is remarkably reduced, and the output electric energy quality of the switched reluctance generator is effectively improved.

This invention discloses a method and system for improving the stability of vehicle-mounted three-phase AC variable-speed constant-frequency power generation. First, the engine drives a permanent magnet synchronous generator (PMSG) to rotate, and the PMSG outputs variable-frequency and variable-voltage three-phase AC power. Simultaneously, a rotary transformer is used to detect the rotor position of the PMSG, obtaining first detection data. This first detection data is then decoded and fed back to the rectifier control unit. This invention decouples the three-phase active current i from the three-phase load current by using a transformation from a three-phase stationary to a two-phase rotating coordinate system in the phase angle of the three-phase command voltage on the inverter side. dfac With three-phase reactive current i qfac Then, both are fed back to the i in the rectifier-side SVPWM control. d and i q In the loop, a current loop feedforward is constructed on the rectifier side, thereby suppressing the fluctuation of DC side voltage when the AC load current changes abruptly, thus improving the stability of the DC bus voltage on the rectifier side, preventing inverter failure of the power generation system, and making it suitable for widespread promotion and use.