382 results about "Generator control" patented technology

The invention discloses a synchronous generator excitation method based on mathematical modeling and gain scheduling, and relates to the technical field of synchronous generator control, and the method comprises the steps: building a synchronous generator global dynamic mathematical model comprising the electromagnetic dynamic characteristics of a stator winding, a rotor winding and a damping winding through a modeling module; a discretization simulation platform is constructed in a Matlab / Simulink environment by utilizing a simulation module, model parameters are corrected, dynamic adjustment is realized through a gain scheduling excitation controller, an automatic voltage regulator (AVR) adopts PID (Proportion Integration Differentiation) control and comprises a voltage deviation integral separation strategy, and a power system stabilizer (PSS) dynamically adjusts parameters of a lead-lag compensator based on active power. According to the method, the deviation between a model and an actual system can be reduced by more than 30%, the electromechanical oscillation damping ratio within the rated power range of 10%-150% is increased by 25%-40%, the harmonic content of exciting current is reduced to be lower than 5%, the stability of an electric power system and the electric energy quality are remarkably improved, the engineering practicability is high, and the method is easy to transform and upgrade on an existing synchronous generator.

The invention discloses a short-circuit current limiting and short-circuit recovery transient voltage control device and method for an aviation three-stage power generation system, and the device comprises a three-stage power generator, a power generator controller, a current sensor, a voltage and current collection module, and an asymmetric half-bridge excitation control circuit. Collecting the output current iL and voltage UL of the generator through a digital processor of the generator controller; when short circuit occurs, the given voltage USet of the voltage regulating loop is linearly reduced in a piecewise mode according to the relation between the iL and a preset threshold value, so that the generator works in a constant power interval; and when the short circuit is recovered, closing the upper / lower power tubes of the asymmetric half-bridge excitation control circuit according to the relationship between UL and a preset threshold value in a grading manner, and triggering a negative-pressure follow-current mode of a main excitation winding of the generator controller to quickly extinguish the field. The method can adapt to different generators without adjusting hardware circuit parameters, has no motor ablation risk during short circuit, has transient voltage less than 350V after short circuit recovery, has no power supply interruption in the whole process, has response delay less than 1ms, and greatly improves the safety and robustness of an aviation power supply and distribution system.

The invention relates to the technical field of wind driven generator control, in particular to a thermal management system and method for a wind driven generator, and the system comprises a data collection layer, a prediction module, a digital twin model, an intelligent control and diagnosis engine, and a heat dissipation execution mechanism. In the prior art, an open-loop or simple feedback control scheme based on a real-time temperature threshold value is mainly adopted, the problem of response lag exists, and all heat dissipation parts always work independently and lack cooperation, so that the energy efficiency is low; according to the invention, a closed-loop intelligent thermal management scheme based on a digital twin model is adopted, and real-time simulation and future state prediction are carried out by constructing virtual mapping of a generator thermal system, so that a control system can actively and cooperatively manage all heat dissipation resources according to a simulation result; the method has the core advantage of converting passive into active, and can intervene in advance before excessive accumulation of heat, so that collaborative optimal control of all parts of the system is realized, and the accuracy, timeliness and overall energy efficiency of heat management are remarkably improved.

The invention provides a range extender anti-reverse control method, device and system, a medium and a program product, and relates to the technical field of new energy vehicles. The method comprises the steps that a power generation power request sent by a vehicle control unit is received; determining a rotating speed instruction and a torque instruction according to the generated power request; the rotating speed instruction is sent to an engine controller to control the rotating speed of an engine, and the torque in the torque instruction and the smaller value in the external characteristic torque, corresponding to the rotating speed in the rotating speed instruction, of the engine are sent to a generator controller to control the torque of a generator; and according to the load percentage, fed back by the engine controller, of the engine at the current rotating speed, torque amplitude limiting control is conducted on the generator.

The invention provides a digital twin modeling method and device for a wind turbine generator control system, and relates to the technical field of new energy, and the method comprises the steps: constructing a multi-physical field mechanism model of the wind turbine generator control system according to obtained aerodynamic characteristic parameters, mechanical characteristic parameters and electrical characteristic parameters; performing comparative analysis based on the multi-physics field mechanism model and the preprocessed operation data to generate deviation data; if the deviation data is greater than a preset first threshold value, performing deviation prediction through a pre-trained deviation prediction model based on the preprocessed operation data, and generating a deviation correction value; and correcting a simulation result of the multi-physics field mechanism model by using the deviation correction value to form a data-mechanism dual-driven digital twinborn model. According to the digital twinning modeling method and device for the wind turbine generator control system, the output precision and environmental adaptability of the wind turbine generator digital twinning system under various working conditions are effectively improved, and the fitting ability and continuous stability of the model to the actual operation state are enhanced.

The invention relates to the technical field of process control, in particular to an in-cylinder direct injection methanol generator combustion system control method based on multi-objective optimization, which comprises the following steps: acquiring multi-source sensor data of a methanol generator, performing feature extraction and evaluation on the multi-source sensor data, and generating a control weight distribution matrix; performing weighted fusion by using the control weight distribution matrix to obtain a fusion control vector; the method comprises the following steps: constructing an in-cylinder process control model, adaptively adjusting model parameters in combination with physicochemical characteristics of methanol fuel and in-cylinder combustion characteristics, comprehensively evaluating energy conversion efficiency, emission level and operation stability by adopting a multi-objective optimization algorithm based on the process control model and in combination with real-time working condition data, and carrying out iterative search on a Pareto optimal solution set. Dynamically generating adaptive control parameters; and generating a control instruction according to the self-adaptive control parameters, and adjusting the operation parameters of the methanol generator in real time. Accurate control over the combustion system is achieved by dynamically adjusting the control parameters of the methanol generator.

The invention discloses a dynamic power generation control method and system for a generator, and belongs to the technical field of generator control, and the method comprises the steps: receiving a generator output parameter collected in real time and an operation parameter of first equipment, predicting the load demand of the generator, and obtaining the predicted load power of a period of time in the future; establishing a composite control strategy, taking the predicted load power as the input of feed-forward control, forming a composite control loop with the output power feedback of the generator, and generating an execution instruction; the generator is controlled to operate according to the execution instruction, and self-adaptive fusion execution is carried out; and carrying out statistical analysis on the prediction error sequence and the control response characteristics. In the implementation process of the technical scheme, the prediction load power is obtained, the execution instruction is generated based on the prediction load power, and then adaptive fusion execution is performed in a credibility prediction mode, so that the prediction process participates in the execution process, and the control response speed of the generator is improved.

The invention relates to the technical field of generator control, and discloses an intelligent vehicle-mounted high-power self-generating control method and system. The method comprises the following steps: acquiring operating parameters of a generator set, performing high-precision digital processing, realizing constant-rotating-speed control through cooperation of multiple controllers based on a rotating-speed fluctuation characteristic value, performing power factor correction through coordinate transformation and active rectification to obtain a direct-current bus voltage, performing precise voltage stabilization by adopting a multi-phase interleaving converter, and outputting the direct-current bus voltage. And finally, outputting a high-quality three-phase alternating-current power supply through space vector modulation and closed-loop feedback control. The technical problems in the prior art that the power supply quality control capability is insufficient, the intelligent level is low, the environmental adaptability is poor, the load adaptability is limited, and the maneuverability is limited are solved.

The present invention relates to the technical field of wind turbine control. Disclosed are a state-of-health diagnosis and control method and system for a backup power supply, and a device and a medium. The method comprises the following steps: S1, detecting in real time detection instructions for a backup power supply during the normal operation of a variable-pitch system, wherein the detection instructions comprise an external detection instruction and a self-detection instruction; S2, after the variable-pitch system receives the detection instructions, triggering a blade detection condition, starting to monitor system parameters of the variable-pitch system, and calculating the real-time output of the backup power supply; and S3, on the basis of the system parameters obtained from monitoring, and a calculation result, evaluating the health diagnosis type of the backup power supply and the battery state-of-health of same, and issuing a control instruction for the variable-pitch system. In the present invention, by means of dynamically detecting the operation of a blade, the state of health of a backup power supply for a variable-pitch system is evaluated more directly and effectively, thereby effectively ensuring the safety of a wind turbine in an abnormal power supply situation and thus making detection more accurate and reliable.

The invention discloses a new energy fracturing truck pump flow control system and method and a fracturing truck, and belongs to the technical field of new energy petroleum equipment.The new energy fracturing truck pump flow control method comprises the steps that pump target flow parameters and an engine mode are received; calculating the target rotating speed of the pump motor, and sending the target rotating speed of the pump motor to a pump main motor controller; the feedback real-time torque value and real-time rotating speed are received and sent to the pump slave motor controller; calculating the total input target power of the pump motor; calculating a generator output target total power based on the pump motor input target total power; determining a generator target speed based on the engine mode and the generator output target total power; based on the generator output target total power, calculating generator input target total power; and calculating a generator target torque based on the generator input target total power and the generator target speed, and sending the generator target torque to a generator controller. According to the invention, pump flow multi-mode control or / and stepless real-time intelligent flow regulation is realized.

The invention provides a wind turbine generator master control system software and hardware security and credibility mutual recognition measurement mechanism and method, and relates to the field of wind turbine generator control, and the method comprises the following steps: carrying out the hierarchical division of a wind turbine generator master control system, and carrying out the behavior measurement of all hierarchies according to the division result; the method comprises the following steps of: performing hierarchical bidirectional authentication on each hierarchy of a main control system of a wind turbine generator by combining a data link layer encryption technology on the basis of a cross-hierarchy credible mutual recognition mechanism; based on a cross-equipment-level credible mutual recognition mechanism, carrying out equipment-level identity bidirectional authentication between a main control system and a peripheral system of the wind turbine generator; and the change conditions of the behavior measurement result, the hierarchical authentication result and the equipment-level authentication result are tracked in real time, the credible state of the main control system of the wind turbine generator is evaluated, and a response strategy is dynamically executed according to the evaluation result. According to the method, the security problems of hardware tampering, software malicious injection, cross-device communication hijacking and the like can be solved, and meanwhile, the industrial control requirements of real-time performance and low resource occupation are met.

The invention discloses a generator control system operation reliability analysis method based on RCM, and belongs to the technical field of power equipment reliability management, and the method comprises the steps: determining the boundary of a generator control system based on the performance standard of functional elements, and dividing functional subsystems; identifying a failure mode type of each functional subsystem through FMEA, and generating a minimum failure set in combination with a redundancy check strategy; performing risk scoring on the failure mode of each functional subsystem based on multiple influence dimensions by using the minimum failure set, and generating a risk priority matrix in combination with historical shutdown loss data; dividing risk levels according to the risk priority matrix, and matching the risk levels with a repair strategy of a failure mode type; and integrating real-time state data of the equipment, verifying a repair strategy through Monte Carlo simulation, and iteratively correcting a minimum failure set and a risk score.

The invention discloses a generator control method and system based on bionic eddy current regulation and control and magnetic variable pitch. The generator control method based on bionic vortex regulation and control and magnetic variable pitch comprises the steps that the wind speed is obtained, a variable geometric vortex generator is regulated and controlled according to the wind speed, when the wind speed is smaller than a first preset wind speed, the height of a fin of the variable geometric vortex generator is increased, and when the wind speed is larger than a second preset wind speed, the height of the fin is reduced. The first preset wind speed is smaller than the second preset wind speed; pressure distribution on the surface of the blade is obtained, when the pressure distribution on the surface of the blade is abnormal, the deformation area is positioned, and the bionic self-adaptive deformation structure is controlled to conduct self-adaptive deformation in the deformation area so as to guide airflow attachment; according to the wind speed and the pressure distribution on the surfaces of the blades, the magnetostriction variable pitch system is controlled to drive the blades to change the angles and the lengths, and according to the embodiment of the invention, the environmental adaptability, the reliability and the working efficiency of the wind driven generator can be effectively improved.

The embodiment of the invention provides an offshore wind field simulation and wind turbine generator control system and method and a wind turbine generator, and the system comprises a data preprocessing module which is used for carrying out format conversion, projection transformation and quality control on multi-source heterogeneous meteorological data; the data fusion module is used for performing intelligent fusion on the preprocessed multi-source heterogeneous meteorological data to generate three-dimensional fusion field data; the mode adjusting module is used for dynamically optimizing a data fusion strategy based on the sea condition change; the resolution conversion module is used for performing temporal-spatial resolution conversion on the three-dimensional fusion field data to generate refined three-dimensional wind field data; and the zone control module is used for performing zone division on the wind field based on the refined three-dimensional wind field data, generating differential yaw control strategies of the corresponding zones according to related data and zone characteristics of each zone, and driving a unit to execute the yaw control strategies. The wind field simulation precision and the adaptability to complex sea conditions are improved, and wind energy capture and equipment loads are balanced through a differential yaw strategy.

The invention provides a blade root load calibration data monitoring method, system and device and a medium, and belongs to the technical field of wind turbine generator control, and the method comprises the steps: carrying out the iteration of a generator set load according to a wind resource parameter and an IEC load calculation standard, and obtaining a maximum design value of the blade root load of the generator set; carrying out coordinate transformation on the load and carrying out moving mean filtering processing on the load signal; the mean value of the blade root loads of the three blades and the difference between the blade root load of each blade and the mean value of the blade root loads of the three blades are calculated; comparing and judging the difference value with a theoretical maximum value of the blade root flapping direction load, and judging whether the difference value is greater than a load deviation alarm threshold value or not; if yes, a fan fault alarm is given out, and variable pitch optimization action is executed according to the load deviation checking pitch angle limit table. According to the method, the blade root load calibration data can be monitored, the running state of the fan can be continuously optimized, the load deviation is reduced, and the safety and stability of the fan are improved.

The invention provides a wind turbine generator control method based on wind conditions. The wind turbine generator control method comprises the steps that operation data and wind condition data of a wind turbine generator are obtained; preprocessing the operation data and the wind regime data; performing feature extraction on the preprocessed operation data and wind regime data to obtain operation feature data and wind regime feature data; identifying a wind regime type represented by the wind regime feature data; when the wind regime characteristic data represents that the current wind regime is a preset wind regime type, a corresponding unit control rule is selected in combination with the preset wind regime type and the operation characteristic data; the wind turbine generator is controlled based on the generator set control rule, the adaptive capacity of the wind turbine generator under the complex wind condition can be effectively improved, through dynamic feature recognition and self-adaptive control strategy selection, the operation safety of the generator set is guaranteed, the power generation efficiency is maintained, the technical defects of response lag and single strategy are avoided, and the method is suitable for large-scale popularization and application. And intelligentization and refinement of the control strategy of the wind turbine generator are realized.

The invention relates to the technical field of wind turbine generator management, in particular to a wind turbine generator control method and system based on component interaction influence analysis, and the method comprises the steps: collecting the multi-source operation data of a wind turbine generator impeller system and a gear box system and the turbulence intensity of a wind field in real time; based on the multi-source operation data, calculating a dynamic interaction influence index between the impeller and the gearbox; according to the dynamic interaction influence index and the turbulence intensity of the wind field, judging whether the wind turbine is in a low-interaction influence working condition or a high-interaction influence working condition currently; when it is judged that the working condition is the low-interaction-influence working condition, a first control strategy based on historical optimal parameters is adopted to control the wind turbine; when it is judged that the working condition is the high-interaction-influence working condition, a second control strategy based on the prediction model is adopted to control the wind turbine; the dynamic interaction influence of the impeller and the gearbox can be evaluated in real time, and grading self-adaptive control is achieved accordingly.

The embodiment of the invention relates to the technical field of wind turbine generator control, and provides a dynamic compensation control method and system for a rotor voltage of a wind turbine generator, and the method comprises the steps: decomposing a power grid voltage and a rotor current into a positive-sequence component and a negative-sequence component in real time through constructing a self-adaptive decoupling control architecture based on a dual-synchronous coordinate system; a positive-sequence channel is responsible for accurately tracking active and reactive power instructions and guaranteeing a power generation task, and a negative-sequence channel is responsible for accurately tracking a positive-sequence channel and a negative-sequence channel; the negative sequence channel aims at eliminating negative sequence current and suppresses second harmonic pulsation; a dynamic compensation gain mechanism is further introduced, the fault severity is evaluated by quantifying the unbalance degree of a power grid in real time, and the intensity of negative sequence compensation is adaptively adjusted, so that the control strategy can maximally suppress pulsation when a slight fault occurs, and the safety of the converter is preferentially guaranteed and the overcurrent risk is avoided when a serious fault occurs.

The invention relates to the technical field of wind driven generator control, in particular to a wind driven generator blade electric pulse deicing device thyristor control method, which comprises the following steps of: acquiring multi-dimensional data and fusing the multi-dimensional data into a blade working condition sensing data set to provide a rich and comprehensive information basis; the method comprises the following steps: acquiring blade surface icing thickness distribution data by acquiring a multi-time-sequence data training model and combining calibration data; differentiated division of energy demands is realized by dividing pulse energy demand levels and outputting a distribution matrix; the accuracy of the control parameters is improved by calculating the thyristor conduction angle adjusting quantity and the pulse width modulation parameters; low-temperature compensation correction is performed on the thyristor, so that the reliability of a trigger pulse sequence in a low-temperature environment is ensured; by executing differential electric pulse deicing operation, the deicing efficiency and pertinence are improved; the self-adaptive optimization control of the deicing process is realized by acquiring the deicing completion degree in real time and dynamically updating the regional energy density distribution matrix.

The utility model discloses a generator control device, a gas generator system and an aircraft, the generator control device comprises an automatic control unit, a sensing unit and a rectification unit, the generator is connected with a turbine of a turbojet engine through a main shaft, and the generator is connected with electric equipment. The automatic control unit is connected with an oil pump of the turbojet engine, electric equipment, the sensing unit and the rectifying unit, the sensing unit comprises a rotating speed sensor connected with a main shaft, the rectifying unit comprises a diode rectifier bridge and a buck-boost converter, the generator is connected with the diode rectifier bridge, and the diode rectifier bridge is connected with the buck-boost converter. And the buck-boost converter is connected with electric equipment. The power supply can stably output electric energy according to the requirements of electric equipment, ensures that the output voltage is stable, and meets the requirements of the electric equipment.

The application discloses a kind of pneumatic-hydraulic hybrid wave energy device energy conversion systems, including nozzle, impulse turbine, torque output shaft, shaft coupling, rotational speed sensor, variable displacement pump, energy accumulator, manual reversing valve, first electromagnetic ball valve, second electromagnetic ball valve, hydraulic motor, permanent magnet generator, PID control module, hydraulic oil tank, oil pressure sensor, first hysteresis comparator, second hysteresis comparator, air pressure sensor and overflow valve.The application realizes an innovative pneumatic-hydraulic energy conversion mode by combining air turbine and hydraulic conversion system.

The invention belongs to the technical field of generator controller ground maintenance, and particularly relates to a communication method between a unified loading upper computer and a generator controller. The method comprises the following steps: S1, acquiring a communication parameter configuration file written by a user according to the model of a generator controller, an interaction state configuration file and a software upgrading program file for generator control; s2, the upper computer sends a serial loading instruction through serial port communication; s3, after the generator controller is reset, running a serial loading program; s4, sending the software upgrading program file to a serial loading program of the generator controller through a serial port; s5, verifying the received software upgrading program file, and writing the software upgrading program file into Flash of the generator controller after verification is successful; and S6, the upper computer sends an instruction for clearing the serial loading mark, and the generator controller clears the serial loading mark. The maintenance cost is remarkably reduced, and the overall working efficiency is improved.

This invention provides a battery heating system and method for an electric vehicle superstructure, relating to the field of battery preheating technology. The system includes: an electric vehicle superstructure comprising a drive motor controller, a generator, a generator controller, a DC-DC converter, a low-voltage battery, a power battery, a hybrid controller, an integrated capacitor, a superstructure load, and a drive motor; the generator is connected to the vehicle chassis engine; the power battery has a built-in battery distribution module; the battery management unit includes a positive contactor, an integrated capacitor, a negative contactor, and a charge / discharge current meter connected in series, wherein a resistor R1 and a pre-charge contactor are connected in parallel to the positive contactor, and the drive motor controller and the generator controller are connected in parallel to the integrated capacitor; the battery management unit also includes a heating contactor, a heating current meter, and a PTC thermistor pair connected in series, wherein the heating contactor is connected to the positive terminal of the power battery, and the PTC thermistor pair is connected to the negative contactor.

The application discloses a wind turbine generator control method for hydrogen production, comprising the following steps: collecting real-time parameters of the wind turbine generator, judging whether the wind turbine generator is in a limited power operation state; if yes, keeping the output power of the grid-side inverter unchanged, and calculating the pitch angle target value of the wind turbine generator when the hydrogen production electrolytic cell is in a rated operation, otherwise, calculating the wind power generation benefit and the hydrogen production benefit respectively; judging whether the wind power generation benefit is greater than the hydrogen production benefit; if yes, the hydrogen production electrolytic cell is operated at minimum power, and the pitch angle target value of the wind turbine generator is the optimal pitch angle, otherwise, the grid-side inverter is output at minimum power, and the pitch angle target value of the wind turbine generator when the hydrogen production electrolytic cell is in a rated operation is calculated. According to the real-time state of the wind turbine generator, the pitch angle target value of the wind turbine generator is dynamically adjusted to ensure the continuous operation of the hydrogen production electrolytic cell, improve the utilization rate of electric energy, and improve the benefit of the wind power hydrogen production system.

The present invention discloses an emergency power generation system and method for an electric vertical take-off and landing aircraft, comprising a folding impulse turbine, a permanent magnet generator, a control module, a folding fairing, a connecting mechanism, a pneumatic release mechanism, and a rectifier tail cone. The control module is provided with a connecting mechanism at the top, which is provided with an electrical interface for connecting to a power unit. The control module is electrically connected to the permanent magnet generator at the bottom. The folding impulse turbine includes multiple blades and a turbine. The blade roots are hinged to the turbine hub. When the blades are in the stowed state, they fold circumferentially toward the turbine axis, enclosing the control module within the blades. The folding impulse turbine is connected to the permanent magnet generator. The folding fairing is used to store the folding impulse turbine and unfolds synchronously with the blades. The folding fairing is connected to the pneumatic release mechanism, which is connected to the control module to receive a release signal. The rectifier tail cone is located below the permanent magnet generator. The present invention meets the emergency power generation needs of an aircraft in the event of low-voltage power failure while the aircraft is in a hovering state.

The invention belongs to the field of wind power generation, and particularly relates to a matrix double-helix wind generating set control system which comprises an energy capture and conversion module, a direct-current bus voltage stabilization and protection module, an intelligent power management module, a grid-connected inversion module and an intelligent monitoring and data interaction module which are electrically connected in sequence. The energy capture and conversion module comprises a wide-range high-efficiency rectification and active voltage stabilization unit, and the wide-range high-efficiency rectification and active voltage stabilization unit comprises a three-phase full-bridge rectification module and a super capacitor module. Three-phase alternating current output by the generator is converted into direct current through the three-phase full-bridge rectifier module, and the output end of the three-phase full-bridge rectifier module is connected with the super capacitor module in parallel. And the direct current bus voltage stabilization and protection module comprises a multi-protection and intelligent switching unit. The matrix double-helix wind generating set control system integrates wide-area energy management, active safety protection and intelligent state monitoring.

The invention discloses a yaw control method based on data driving and multi-objective optimization, and the method comprises the steps: dividing a wind speed interval: according to the wind resource characteristics, yaw behavior, wind direction distribution characteristics, wind speed frequency distribution, turbulence intensity in different wind speed intervals, and the influence of a yaw deviation angle on output power in different wind speed intervals of a mountain wind power plant, determining the wind speed interval of the mountain wind power plant; the wind speed range below the rated wind speed is divided into a low-speed stable interval of 3-6 m / s, a medium-speed optimization interval of 6-8 m / s and a high-speed balance interval of 8-11 m / s. A data driving and multi-objective optimization algorithm is adopted, so that the yaw system can flexibly adjust yaw control parameters in real time according to dynamic changes of the wind speed, the wind direction and the turbulence intensity. No matter whether the wind direction changes suddenly or the turbulence intensity fluctuates, the yaw system can make a response rapidly, and it is ensured that the wind turbine generator is in the best windward state all the time.

This invention discloses a piston-type wind turbine generator set, including a disc, a nacelle, a tower, a linear reciprocating mechanism, a gearbox, a generator, and a control cabinet. The nacelle is mounted on the tower. The linear reciprocating mechanism is located inside the nacelle and extends outwards, connecting to the disc. The linear reciprocating mechanism is connected to the input shaft of the gearbox, and the output shaft of the gearbox is connected to the generator. The generator is connected to the control cabinet. When the disc is subjected to the thrust of horizontal wind, it performs a reciprocating translational motion, driving the generator through the gearbox. This invention can reduce the rotational load on the plane perpendicular to the wind direction, reduce airflow, achieve higher aerodynamic efficiency, and improve power generation efficiency.