535 results about "Deadband" patented technology

Disclosed in the present invention are a method and system for full-range participation of energy storage charging and discharging in power grid frequency regulation. The method comprises: collecting operating power and frequency data of a power grid, so as to construct a full-range droop coefficient; setting constraints for an upper limit value and a lower limit value of a frequency dead band; obtaining an actual output power instruction value by means of a constraint function constructed on the basis of a theoretical power instruction value and a charging / generated power rated value, and controlling the power grid to operate on the basis of the actual output power instruction value; setting a hysteresis range on a power instruction of an energy storage system, and when a power demand of the power grid exceeds an upper limit threshold value of the hysteresis range, switching the energy storage system from a charging mode to a discharging mode; and when the power demand of the power grid is lower than a lower limit threshold value of the hysteresis range, switching the energy storage system from the discharging mode to the charging mode. In the present invention, when the frequency of the power grid is increased, generated power is reduced until power is absorbed from the power grid, and when the frequency of the power grid is reduced, the absorption of power from the power grid is reduced until electrical power is delivered to the power grid, thus achieving full-range participation of energy storage in power grid frequency regulation control, and satisfying regulation requirements of power grids.

The invention relates to the technical field of servo control, in particular to a high-precision current closed-loop control system and method for a servo driver, and the method comprises the steps: collecting three-phase current, rotor position, winding temperature and bus voltage, and constructing a state data set; constructing a parameter identification model fusing physical prior and an attention mechanism, deducing inductance and flux linkage parameters influenced by temperature, saturation and cross coupling, and correcting a motor model in real time; the correction parameters are injected into an FOC decoupling and feedforward link, and a self-adaptive PI regulator is linked to set the gain of a current loop on line; calculating a d-q axis voltage command according to the update model to respectively control excitation and torque components; an extended state observer is introduced to estimate load abrupt change and parameter disturbance, feed-forward compensation is carried out, and three-phase PWM is generated through anti-Parker and SVPWM; and an inverter nonlinear compensation model of a dead zone and switch delay is constructed, PWM is pre-distorted and output to a power device, and robust and low-ripple current closed-loop control of the servo motor is realized.

The invention discloses a preset performance asymptotic control method for a hydraulic servo system with control signal unknown dead zone compensation. The preset performance asymptotic control method comprises modeling of the hydraulic servo system with the control signal unknown dead zone and the preset performance asymptotic control method with the dead zone compensation. Firstly, in order to weaken the influence of an unknown dead zone, a smooth inverse dead zone model is introduced, and parameterization processing is carried out to facilitate control design; secondly, a decreasing constraint is applied to the tracking error by defining a preset performance function; a parameter adaptive law is further designed, and in combination with a robust technology based on interference upper bound estimation, it is ensured that the system has presettable performance and asymptotic stability under bounded time-varying disturbance. According to the control method, the preset performance and the asymptotic stability of the hydraulic servo system containing the control signal unknown dead zone under the time-varying interference are achieved for the first time.

The present invention belongs to the technical field of wind farm active power control and discloses a wind farm frequency modulation power distribution method that takes into account the historical fatigue load of the unit. The method comprises the following steps: collecting the frequency data of the wind farm grid connection point; when the frequency change exceeds the frequency modulation dead zone, calculating the wind farm active power change reference value ΔP farm ; Match the station active power change reference value ΔP in the formed scenario strategy set farm The corresponding optimized active power distribution results of the units. This distribution method is compared with the traditional proportional distribution scheme. While meeting the system frequency response requirements, the present invention improves the problems of sudden increase in fatigue load in wind farms and large differences in fatigue accumulation between units, and verifies the effectiveness of the proposed method.

The invention relates to the technical field of reactive power compensation of a power system, and discloses an active filter harmonic suppression and dynamic compensation system based on IGBT (Insulated Gate Bipolar Translator) multi-mode regulation and control. The system comprises a control module; the high-frequency harmonic detection module is electrically connected with the control module and is configured to detect a power grid harmonic signal in real time at a sampling rate of 200kHz and transmit the power grid harmonic signal to the control module; the IGBT gate driving compensation circuit is electrically connected with the control module and a preset IGBT module, and the control module dynamically adjusts the dead time and the switching frequency of the IGBT module through the IGBT gate driving compensation circuit; the IGBT junction temperature observer is electrically connected with the IGBT module and the control module and is configured to monitor the junction temperature of the IGBT module in real time and trigger the control module to start a derating protection mechanism when the junction temperature exceeds 125 DEG C; wherein the control module generates a PWM (Pulse Width Modulation) compensation waveform through a model prediction control algorithm unit based on a detection signal of the high-frequency harmonic detection module, so as to drive the IGBT module to execute harmonic compensation through the IGBT gate driving compensation circuit.

The invention discloses a dead zone compensation control method, electronic equipment, a storage medium and a product, relates to the technical field of motor control, is applied to a motor control system, and comprises the following steps: obtaining an original duty ratio of the motor control system through space vector pulse width modulation, and calculating a compensation duty ratio for dead zone compensation in the motor control system; determining a first partition threshold value according to the minimum pulse width duty ratio of the motor control system, and determining a second partition threshold value according to the minimum pulse width duty ratio and the dead zone duty ratio of the motor control system; according to the first partition threshold value and the second partition threshold value, the duty ratio value interval is divided, and compensation subintervals are obtained; and determining a target compensation subinterval of the original duty ratio in each compensation subinterval, and executing a duty ratio compensation strategy of the target compensation subinterval to obtain a target duty ratio. The technical problem of unstable compensation control is solved.

The invention discloses a dual-mode TDC implementation method and system based on an FPGA, and relates to the technical field of electronic circuits, and the technical key points are as follows: after a dual-mode signal generation circuit receives each STOP pulse, a logic sequence opposite to the last time is immediately output as an effective delay signal, the reset of the last time signal in a time delay chain (TDL) is not required, and the time delay time is shortened; when the logic signal propagated last time does not completely fade, the new reverse logic signal can be independently propagated in the TDL, and the new reverse logic signal and the new reverse logic signal do not interfere with each other; meanwhile, the rising edge of the system clock only updates the state of the main trigger to serve as the logic reference of the next trigger, and an additional reset process is not needed, so that the dead zone time of single measurement is strictly controlled to be a single period corresponding to the system clock, and compared with a double-period dead zone in an existing scheme, the dead zone time is remarkably shortened, and the measurement rate is synchronously doubled; in a high-frequency pulse measurement scene, pulse loss caused by an overlong dead zone can be effectively avoided, and the measurement efficiency is remarkably improved.

A method and circuit for controlling a bidirectional resonant direct-current converter are provided. The method includes obtaining an input and / or output electrical parameter of the converter; determining respective delay time periods of bridge arms in the secondary circuit based on the input and / or output electrical parameter and a desired gain of the converter; determining a switching frequency to be greater than a resonant frequency of the resonant tank based on the input and / or output electrical parameter and a preset reference signal; and turning off, in response to a secondary resonant current of the converter reaching zero, corresponding switching transistors of the switching transistors in the secondary circuit immediately after the respective delay time periods starting from a zero-crossing point; and turning on other switching transistors complementary to the turned-off switching transistors in the secondary circuit immediately after a dead time.

The invention discloses a three-phase uninterruptible power supply device and a control method thereof. The control method comprises the following steps: acquiring an input current of a three-phase alternating current power supply and a load voltage and a load current of an output end of an inverter circuit; carrying out harmonic separation on the collected input current, and determining a total harmonic distortion rate; when the total harmonic distortion rate is greater than a preset total harmonic distortion rate threshold value, generating a harmonic compensation signal; calculating load variation and voltage deviation based on load voltage and load current, dynamically adjusting proportional gain and integral time in real time, and generating a fundamental voltage control signal; superposing the fundamental wave voltage control signal and the harmonic compensation signal to generate a preliminary modulation wave; dynamically adjusting the dead zone time of the PWM wave, and combining the dead zone time with the preliminary modulation wave to generate the PWM wave; according to the control method, the three-phase alternating current is converted into the alternating current meeting the load requirement through the PWM waves, the response capacity to voltage sag, voltage fluctuation and harmonic disturbance is improved, and the output electric energy quality is improved.

The invention discloses a narrow pulse suppression method and device for dynamic adjustment of dead time, a medium and a controller, and the method comprises the steps: presetting the dead time of M periods in the future according to the real-time state of a motor and the dead time and current change rate of the first N periods, and outputting a working condition label at the same time, N and M being positive integers; determining target dead zone time Td according to the working condition label and the dead zone time of the M periods in the future; determining a dead zone time ratio Dd according to the target dead zone time Td, constructing an interval section of a PWM signal according to the dead zone time ratio Dd and a narrow pulse time ratio Dp, and constructing an upper bridge arm duty ratio function Dt and a lower bridge arm duty ratio function Db corresponding to each interval section according to the dead zone time ratio Dd and a duty ratio instruction Dm of the PWM signal; according to the interval section where the duty ratio instruction Dm of the PWM signal is located, a duty ratio function of the corresponding interval section is called, and a target PWM signal is output.

The invention discloses a complex wave-based permanent magnet synchronous motor all-electrical parameter online identification method and device. The method comprises the following steps: analyzing the influence of a voltage error caused by dead zone time on parameter identification, and performing corresponding dead zone compensation; a bias complex wave with a certain amplitude and frequency is injected into the d-axis current, so that the d-axis current meets a parameter identification continuous excitation condition; constructing three groups of effective current slopes through four groups of different input data stored in the steady state of the motor, and identifying three groups of parameters of resistance, direct-axis inductance and quadrature-axis inductance by referring to a d-axis voltage equation and adopting a least square method with a forgetting factor; and finally, updating the identified three groups of parameters as known quantities in a q-axis voltage equation in real time, storing two groups of different input data to construct a group of effective current slopes, and identifying flux linkage parameters by adopting a least square method with a forgetting factor. According to the method, the under-rank problem of all-electrical parameter identification of the motor is solved, the identification precision is high, and the identification error of each parameter is about 3%.

The invention discloses a data calibration compensation method for an off-axis magnetic encoder, and the method comprises the following steps: S1, calibration initialization: carrying out the initialization of used peripherals, calibration parameters and an encoder chip, and making preparations for calibration; s2, forcibly dragging the motor to align: forcibly dragging a motor rotor to rotate to a position 0 of a nearest electrical angle by adopting a non-inductive control mode, and recording a calibration initial position; s3, calculating calibration data by rotating the motor: recording a data compensation result of the encoder by taking the original data of the encoder as an index; the calibration method does not need other equipment to drive the motor to coaxially rotate for calibration, the stator magnetic field is directly utilized to calibrate the motor, system errors caused by external equipment are avoided, the accurate relative position relation between the electron magnetic field and the rotor magnetic field can be obtained, the driving efficiency is higher, the driving dead zone is smaller, and the calibration precision is higher. And various coaxiality and roundness error data of the off-axis magnetic encoder can be improved.

The invention relates to the field of power system frequency control, in particular to a non-linear power system model-free load frequency control method based on deep reinforcement learning. Constructing a dual-network architecture, and optimizing actuator network parameters according to the dual-network architecture; initializing the actuator network based on pre-trained PID network parameters, generating exploration noise through random disturbance to perform control space exploration, and iteratively optimizing the actuator network parameters to convergence based on an experience playback mechanism to obtain a trained actuator network; and generating a frequency control instruction. According to the method, the deep network gradient anomaly problem is solved through symmetric difference estimation, the gradient disappearance or explosion problem caused by a complex network structure in a traditional gradient descent-based method is avoided, and the stability and reliability of intelligent agent parameter updating are ensured; and finally, an empirical playback mechanism is adopted to iteratively optimize actuator network parameters, and model-free frequency control of the power system under nonlinear characteristics of a speed regulator dead zone, power generation rate constraint and the like is realized.

The invention discloses a method and a system for improving the control precision of a control lever based on a configurable dead zone, and relates to the field of electronic control and signal processing, and the method comprises the following steps: carrying out median calibration sampling, precisely obtaining an electrical median value, and temporarily storing a calculation result; boundary calibration sampling is carried out, a rocker is pushed to the limit position in sequence, and the maximum value and the minimum value of an original ADC are monitored and updated in real time; calculating and storing calibration parameters, calculating proportionality coefficients and offset key parameters of an X axis and a Y axis by utilizing the temporarily stored median value and boundary value in combination with a target output range, and generating and solidifying mapping parameters; and writing the parameters into FLASH: permanently storing the finally calculated calibration parameters into a nonvolatile memory FLASH. According to the control lever control precision improving method and system based on the configurable dead zone, the output data of the control lever caused by abrasion and aging can be stabilized within the range specified by a standard protocol again without disassembling equipment and special tools, the full-stroke control capability of the control lever is recovered, and control hidden dangers are eliminated.

The invention relates to the technical field of new energy, in particular to an efficiency optimization method of a DAB converter, electronic equipment and a storage medium. The method comprises the following steps: calculating a staggered ratio coefficient and a first phase shift parameter in a heavy load mode and a first phase shift parameter in a light load mode according to an output power reference value, a battery side voltage sampling value and a bus side voltage sampling value; determining a second phase shift parameter and a switching frequency in the heavy load mode according to the staggered proportion coefficient and the first phase shift parameter in the heavy load mode, and determining a second phase shift parameter in the light load mode according to the first phase shift parameter in the light load mode; and determining a current working mode based on the staggered proportion coefficient in the heavy load mode and a preset dead zone proportion, and generating a driving signal of each power switch based on the first phase shift parameter, the second phase shift parameter and the switching frequency corresponding to the current working mode. According to the method, the overall efficiency of the DAB converter under different load conditions is improved.

The invention discloses an optimized virtual vector modulation strategy of a T-type three-level inverter, which is characterized in that a sector is re-divided based on the virtual vector modulation strategy, a synthesis mode of a virtual vector is optimized, a low-amplitude common-mode voltage vector is adopted to synthesize the virtual vector, on one hand, common-mode voltage generated by the inverter can be inhibited, and on the other hand, the common-mode voltage generated by the inverter can be inhibited; and on the other hand, the optimized modulation method does not influence the neutral point potential, the smoothness of the direct output voltage of the inverter is improved, the voltage quality is improved, and the method has the advantages of low harmonic content of the output current and the like. In addition, the method solves the problems of inverter output voltage distortion, common-mode voltage spike and the like caused by a dead zone effect through a voltage vector compensation method, and has guiding significance for improving the reliability of a photovoltaic system and a micro-grid system.

The invention discloses a radio frequency matching method, a radio frequency matcher and a storage medium, which are used for solving the problems of matching dead zone and overlong time. Load impedance is detected through a load state sensor, input impedance is adjusted through an impedance adjusting network, and the impedance adjusting network comprises adjustable capacitors C1 and C2; and constructing a loss function L based on the modulus square of the reflection coefficient gamma, calculating the gradient and iteratively adjusting the capacitance parameter. The main control module drives the vacuum capacitor to continuously adjust, dynamic optimization is carried out in combination with a gradient descent algorithm, discrete limitation and dead zones of a traditional table look-up method are eliminated, pulse mode microsecond-level rapid matching is adapted, and radio frequency overshoot is restrained. The method improves the matching precision and speed under a dynamic load (such as plasma), gives consideration to the stability of a complex process, and is suitable for the technical processes of semiconductor etching and the like.

An error correction method for a successive approximation register analog-to-digital converter and a successive approximation register analog-to-digital converter (SAR ADC) are disclosed, which relate to integrated circuit technology. The successive approximation register analog-to-digital converter error correction method includes the following steps: a. detecting whether a comparator completes a data comparison within a specified time; if so, performing step b; if not, performing step c; b. after the comparator outputs data, starting a next data comparison cycle, and returning to step a; and c. interrupting the conversion, waiting for a signal to start a next conversion, starting the next data comparison cycle, and returning to step a. The method and SAR ADC can effectively prevent problems relating to (1) slow comparator speed caused by dead voltage and (2) burr interference.

The invention provides a dead zone optimization method and device for a servo motor, equipment and a storage medium, and the method comprises the steps: carrying out the multi-frequency-domain excitation of the servo motor, and obtaining a dead zone threshold value and a dead zone slope; detecting the position error, the speed error, the rotating speed and the acceleration of the servo motor at the current position; performing disturbance compensation amount calculation on the position error and the speed error according to the dead zone threshold and the dead zone slope to obtain a compensation gain; determining a compensation coefficient according to the compensation gain, the rotating speed and the acceleration; and according to the compensation coefficient, the original control signal of the servo motor is superposed to obtain a correction control signal, and the servo motor is controlled based on the correction control signal.

The invention discloses a motor phase current sampling method and device, a chip and a motor controller, and the method comprises the steps: obtaining the duty ratio of a multi-phase bridge arm in a pulse modulation period; determining a to-be-sampled bridge arm according to the duty ratio; sampling a motor phase voltage corresponding to the to-be-sampled bridge arm in a target sampling time period corresponding to the to-be-sampled bridge arm, and determining a corresponding motor neutral point voltage; wherein the target sampling time period is a time period from the start of a dead zone corresponding to the to-be-sampled bridge arm to the completion of follow current; and determining a motor phase current corresponding to the to-be-sampled bridge arm according to the motor phase voltage corresponding to the to-be-sampled bridge arm and the corresponding motor neutral point voltage. According to the method, the sampling function of the motor phase current can be realized without phase shift and sampling point calculation, the algorithm is simple, harmonic waves are not generated, and the phase current sampling cost is relatively low.

The invention discloses a current prediction control method and device for a permanent magnet motor, and the method achieves the real-time prediction of a voltage error caused by a dead zone and other non-ideal factors through the powerful nonlinear fitting capability of a feedforward neural network in combination with the learning of historical current time sequence characteristics. And the prediction error is further fed forward and compensated to a future current prediction model to improve the accuracy of current prediction, so that the cost function evaluation is more accurate, the optimal voltage vector is selected, and the steady-state current error and the low-speed torque ripple are effectively inhibited. In this way, precise control over the current of the motor is achieved, and the control precision and operation stability of the driving system are comprehensively improved.

The invention discloses a two-phase cold plate liquid cooling dryness real-time measurement method and system based on data fusion, and relates to the technical field of liquid cooling data processing, and the method comprises the following steps: S1, collecting multi-mode liquid cooling working condition data in real time, carrying out the data preprocessing, carrying out the fusion of original dryness according to three types of dryness signals, and evaluating the health degree of signal fusion; s2, dynamically distributing adaptive signal weights for each type of dryness signals to obtain high-precision fusion dryness, and performing anomaly diagnosis; s3, the high-precision fusion dryness is optimized, flow adjustment is carried out, meanwhile, dead zone compensation of flow adjustment is carried out, and flow compensation correction is carried out; and S4, monitoring a flow regulation process and abnormal information in real time, and performing high-precision visual feedback and operation and maintenance optimization of the fusion dryness. The problems that an existing two-phase cold plate liquid cooling system generally adopts a single dryness detection mode and is prone to being interfered by the environment and lagging in response, so that the dryness measurement precision is insufficient, and the reliability and the heat dissipation efficiency of cooling capacity adjustment are affected are solved.

The invention provides a coordination control method and device for an energy storage power station, electronic equipment and a storage medium, and belongs to the field of energy storage. Under the condition that the difference between the current frequency of the grid-connected point and the system frequency dead zone of the energy storage power station is greater than or equal to a preset frequency deviation threshold value, superimposing a primary frequency modulation instruction and a virtual inertia support instruction so as to doubly suppress the frequency change amplitude and the frequency change rate; the primary frequency modulation power is determined according to the SOC of the energy storage power station; when the system frequency fluctuates and deviates from the rated frequency, and the difference value between the current frequency of the grid connection point and the system frequency dead zone is smaller than a preset frequency deviation threshold value, or when the system frequency gradually approaches the rated frequency, a primary frequency modulation instruction is executed. The method can solve the problems that the energy storage power station is poor in frequency quick response performance and large in frequency steady-state deviation, and the service life of a battery is prolonged.

The invention provides a high-power electric heating fused salt heat storage control system which comprises a fused salt electric heating and electric heat tracing device and a central control unit, and the central control unit is directly connected with a core control system for electric heating power dynamic adjustment, fused salt temperature gradient control, electric heat tracing pipeline safety protection and the like. The method comprises the following steps: firstly, based on power grid frequency deviation, generating an electric heating power instruction through droop control and a dead zone link; secondly, establishing a fused salt temperature-flow-power kinetic equation, and identifying a nonlinear surge excitation source; and finally, designing a flexible voltage source type converter control law of the electric heat tracing power supply by adopting an all-drive control theory, directly counteracting a nonlinear term of the system, and converting an original equation into a linear stable system. According to the method, the influence of nonlinear factors on surge and other phenomena is eliminated, the surge problem of small-mass and small-flow fused salt is effectively solved, and the energy efficiency and reliability of the system are improved.

The invention discloses an inverter adaptive power distribution method and system based on environmental perception, and relates to the technical field of inverter reactive voltage regulation. The method comprises the steps of collecting operation state data of a power distribution network in real time, including node voltage of each inverter access bus, and performing preprocessing to obtain environment characteristic data; inputting the parameter into a pre-trained first intelligent agent, and outputting dead zone parameters of each inverter; generating second environment characteristic data in combination with the dead zone parameter, and inputting the second environment characteristic data into a second agent to obtain a droop control parameter; and determining the reactive power of the inverter according to the node voltage and the dead zone parameters. According to the method, control parameters can be dynamically adjusted in real time, self-adaptive optimization is achieved, reactive power distribution of multiple inverters is coordinated, oscillation is avoided, and the voltage stability, reliability and intelligent level are improved.

The invention discloses a hierarchical control method considering participation of a wind-storage system in short-time frequency support and computer equipment, and relates to the technical field of stable operation and control of a power grid, the method comprises the following steps: determining operation state information and frequency data of the power grid at the current stage, the frequency data comprising a system frequency deviation and a system frequency change rate; and when the system frequency deviation exceeds a frequency modulation dead zone, starting frequency stabilization hierarchical control, calculating a second instruction variable quantity and a third instruction variable quantity, and starting fan rotor rotating speed recovery control when the second instruction variable quantity and the third instruction variable quantity are equal to zero, so that the fan rotor rotating speed is quickly recovered to a numerical value before disturbance occurs. Otherwise, the second instruction variable quantity is sent to the fan unit, the third instruction variable quantity is sent to the energy storage unit, 1 is added to the current stage, and the step of determining the operation state information and the frequency data of the power grid at the current stage is returned. The problem of optimal utilization of frequency modulation energy of the wind-storage system can be solved.

The invention discloses a water turbine primary frequency modulation method adopting feedforward double fuzzy control and adapting to working condition changes, which comprises the following steps of: firstly, inputting a frequency deviation into a PID (Proportion Integration Differentiation) controller when the frequency deviation exceeds a primary frequency modulation dead zone, inputting a water head signal and a power signal into a fuzzy controller I, and outputting PID controller parameter Kp, Ki and Kd values after fuzzification, fuzzy reasoning and defuzzification; the PID output and the feed-forward signal are added and then converted into a hydraulic signal through an electro-hydraulic converter; and then the opening degree deviation signal and the derivative of the signal are input into a fuzzy controller II, an input electric signal of an electro-hydraulic converter is output, a movable guide vane is operated through a hydraulic execution mechanism to control the output of the water turbine, and a primary frequency modulation action is completed. According to the method, adaptability improvement is carried out on different working conditions of the water turbine governor based on fuzzy logic, meanwhile, in order to limit the water hammer effect, the second fuzzy controller is added in front of the electro-hydraulic converter, and the adaptability, quickness and stability of the primary frequency modulation process are effectively improved.

A harmonic modeling method of a power amplifier solves the problem that a traditional modeling method is not suitable for harmonic modeling analysis of a high-switching-frequency topological structure, and comprises the following steps: obtaining baseband harmonic and sideband harmonic caused by modulation nonlinearity according to the number of parallel half bridges, a modulation wave function and a carrier function in the power amplifier; according to the topological structure of the power amplifier, obtaining a circuit equation of the topological structure in the dead-zone time period; calculating the current amplitude envelope of the resonant inductor; and calculating a voltage error caused by the dead-zone time period according to the calculated current amplitude envelope in combination with a circuit equation of the dead-zone time period, performing Fourier decomposition on the voltage error to obtain distortion harmonics caused by the dead-zone time period of the power amplifier, and obtaining total harmonics in combination with the obtained baseband harmonics and sideband harmonics. According to the invention, the switching frequency when the total harmonic distortion is the lowest can be obtained through modeling.

A method for coordinated control of wind-storage joint primary frequency regulation, considering rotational speed and SOC, within the field of power system frequency regulation, includes: determining if the grid frequency deviation exceeds the primary frequency regulation dead zone; if exceeded, calculating the system's frequency regulation demand power based on the deviation; assessing the available frequency regulation power from wind turbines using their rotational speed; formulating a frequency regulation strategy based on the demand and available power; and executing the strategy. This approach effectively addresses the delay caused by wind speed variations, which hinders wind turbines from promptly adjusting output power to meet primary frequency regulation demands. The method enhances the stability of power system operation.

The invention belongs to the technical field of power management, and particularly relates to a high-precision double-edge zero dead zone control circuit for a GaN half bridge. The circuit comprises a sampling interface circuit, a falling edge dead zone control circuit and a rising edge dead zone control circuit, the sampling interface circuit is connected with an SW node of a GaN half bridge and samples the voltage of the SW node, the sampling interface circuit samples the node voltage to obtain a clamping voltage Vclamp and a negative voltage Vsen, the Vsen is input into the falling edge dead zone control circuit, and the Vclamp is connected with the rising edge dead zone control circuit. The Vsen is input to a rising edge dead zone control circuit; the falling edge dead zone control circuit is used for controlling the GaN half bridge according to the Vclamp; and the rising edge dead zone control circuit controls the GaN half bridge according to the Vsen. Noise interference can be effectively avoided, and finally high-precision and low-power-consumption zero dead zone control is achieved.