704 results about "Generator control" patented technology

The invention discloses a motor intelligent control method and system based on a self-adaptive control algorithm, and the method comprises the steps: obtaining motor operation parameters, and determining an overall control target according to the motor operation parameters; on the basis of the overall control target and the current working condition information, initial control parameters are calculated through a self-adaptive control algorithm; monitoring interaction parameters between the motor and the load; the initial control parameters are dynamically adjusted, and the running state of the motor is optimized; in a preset motor prediction model, based on the historical operation data and the current real-time data of the motor, predicting the operation state change of the motor, obtaining a motor prediction result, formulating an adjustment control strategy, and triggering a motor control instruction; the actual operation state of the motor is collected, and a state difference value is calculated; if the state difference value exceeds the threshold range, triggering a generator exception processing instruction; adjusting control parameters are obtained; triggering an adjustment instruction based on the adjustment control parameter; the control effect and the self-adaptive capability of the motor control system are improved.

The invention relates to the technical field of generator control, and particularly discloses an SVG static var generator control method and system, and the method comprises the steps: constructing a reactive-voltage sensitivity matrix containing a node sensitivity weight based on the real-time measurement data of a power grid, and obtaining a node sensitivity matrix; a dynamic sorting strategy of device priority grading is generated, a distributed compensation priority queue of all devices is obtained, and the devices comprise an SVG cluster and a photovoltaic inverter cluster; executing reactive power distribution under a capacity constraint condition based on the distributed compensation priority queue, and generating a target reactive power compensation amount with the capacity constraint condition; generating a hierarchical coordination control instruction of the SVG and the inverter according to the target reactive compensation amount, and obtaining a hierarchical control instruction set; executing the distributed cooperative compensation driven by the hierarchical control instruction set, and completing the dynamic regulation of the power grid voltage; the reactive power regulation capability of different devices in a power grid can be fully utilized, the accuracy and response speed of reactive power distribution are improved, and resource waste and excessive compensation are avoided.

The invention discloses a cooperative control method for conversion of torque control and rotating speed control of an engine and a generator and a medium. The method comprises the following steps: calculating available recovery torque of a generator, and requesting an engine to load reserve torque by a vehicle control unit; activating an engine rotation speed control flag bit, an engine control rotation speed mode and a generator control torque mode; determining a target rotating speed and a target torque, further determining a generator torque filtering rate, and respectively controlling and adjusting the rotating speed and the torque; and exiting the engine rotation speed control flag bit, the engine control torque mode and the generator control rotation speed mode. By increasing the reserve torque of the engine, the torque adjusting capacity of the engine is improved, the engine and the generator are cooperatively controlled, and engine speed fluctuation is reduced.

The invention provides a network source coordination control system and method for an offshore wind power flexible direct current transmission system, and the system comprises a receiving end converter control module which controls the output frequency of a receiving end converter through a power ring by simulating the synchronous operation mechanism of a virtual synchronous generator; the voltage loop controls the output voltage of the receiving end converter; the current reference value of the current loop is output and given through the voltage loop, and current tracking is realized through PI control; the sending-end converter control module is used for reflecting the active demand information of the system on the frequency of the sending-end offshore wind power collection alternating-current system to realize active support control of the offshore wind turbine generator to the flexible direct-current power transmission system; and the offshore wind turbine generator control module is used for participating in system frequency modulation control through the wind turbine generator when the wind turbine generator runs in a deloading mode under the normal condition and the power is unbalanced based on the variable-speed wind turbine generator control strategy.

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 an adaptive power control method for a duplex-winding induction generator system, and belongs to the technical field of generator control. The double-winding induction generator system is composed of a double-winding induction generator, an energy storage unit, a static excitation converter and a diesel engine. According to the self-adaptive power control method, control winding current is decoupled into excitation control and electromagnetic torque control through coordinate transformation based on rotor flux linkage orientation, independent adjustment of output power of the generator is achieved, passive regulation and control of power of an energy storage unit are achieved through control of electromagnetic torque of the generator, and the self-adaptive power control method is achieved. The problem that the control freedom degree of a single converter system is insufficient is solved. Besides, according to the control method adopted by the invention, a dynamic planning-based generator / energy storage unit power distribution strategy with minimum fuel loss as a target is adopted, so that the generator is ensured to always work in a high-efficiency interval of the diesel engine within a wide load change range, and the power generation cost is remarkably reduced.

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 belongs to the technical field of electric power output control of motors, and particularly discloses a mute permanent magnet generator control system, which comprises the following steps of: defining information entropy of a motor load data set by acquiring a bearing working condition of a motor in a historical cycle operation process; accordingly, the corresponding complexity and uncertainty of the load change in the operation process of the motor are reflected, and then the power output demand of the generator in future periodic operation is predicted and evaluated; proper control modes of power output are selected according to actual requirements, including vector control and direct torque control, so that accurate matching of the power output of the generator and load power requirements is ensured; by detecting the influence state of each variable factor of motor operation in the vector control module and performing precision correction control on the voltage component in the corresponding voltage equation of the d-q rotating coordinate system, the precision control on each variable in the motor can be realized, and the efficiency and the stability of the generator can be 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.

An excavator has a lower frame with a blade movably mounted to the lower frame. The excavator also has dig components such as a boom, an arm, and an attachment. The positions of the dig components are identified and a control signal generator controls movement of the dig component to avoid a collision between the boom or attachment and the blade.

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 discloses a test bed for an aviation hybrid power turbine power generation system. The test bed comprises a rack system, an emergency load system, a load absorption system, a test system, an electrical control system, a lubricating oil system, a fuel oil system and an exhaust system. According to the invention, the problems of the existing eddy current system during the test are well solved, the test risk is effectively reduced, the test reliability is improved, and the method can be used for the complete machine test of the aviation hybrid power eddy current system; according to the invention, the special protection setting of the engine controller is utilized, the brake and the emergency load system avoid the galloping risk caused by load loss during the test of the high-rotating-speed and high-power eddy current system from the three aspects of fuel control, mechanical braking and emergency load switching, and multiple safety protection measures guarantee each other and act at the same time; requirements of lubricating cooling of the generator, cooling of the generator controller and the like during an eddy current system test are met by means of the independently arranged lubricating oil system, and correct and safe operation of the test bed is guaranteed.

The invention discloses a gas generator frequent starting system without a starting motor and an implementation method, and belongs to the technical field of generator control. The gas generator frequent starting system comprises a charging and discharging circuit, a charging control circuit and a discharging control circuit; the storage battery is connected with an inverter and a plurality of super capacitors through a normally open contact of the relay, each super capacitor is connected with a coil of a solid-state relay, the storage battery is further connected with a rectification voltage stabilizer, the inverter and the rectification voltage stabilizer are connected with a coil of a gas generator, the coil of the gas generator is further connected with a coil KMC-0 of an 8 # relay, and the coil KMC-0 of the 8 # relay is connected with the storage battery. A starting mode of directly driving a generator coil is adopted, an external starting motor is not needed, and therefore the problems that a conventional starter slips, cannot be separated and is abraded are solved.

The embodiment of the invention provides a power generation control method of an electric loading system of a mixer truck and the electric loading system. The power generation control method is used for solving the problem that in the prior art, oil consumption is high during power generation driving. The mixer truck comprises a chassis and an electric loading system, the chassis comprises an engine, the electric loading system comprises a generator, a generator controller, a driving motor, a driving motor controller and a battery unit, the battery unit is electrically connected with the generator and the driving motor, and the driving motor is used for driving a stirring device. The method comprises the steps that when it is determined that the mixer truck is in a running working condition, the rotating speed of an engine and the load of the engine are obtained; when the rotating speed of the engine and the load of the engine meet efficient power generation conditions, the generator controller controls the generator to generate power; wherein the efficient power generation condition is that the engine rotating speed is larger than the first set rotating speed and smaller than the second set rotating speed, and the engine load is larger than the first set load and smaller than the second set load.

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 provides a thermal management control method, device and system, a storage medium and a vehicle control unit. The device comprises a first three-way valve and a second three-way valve. A generator controller and a generator; the pipeline system comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline; the generator controller is connected in series between the first three-way valve and the second three-way valve, is connected with the first three-way valve through a first pipeline, and is connected with the second three-way valve through a second pipeline; the generator is connected in series between the first three-way valve and the second three-way valve, connected with the first three-way valve through a third pipeline and connected with the second three-way valve through a fourth pipeline; and the generator controller is connected with the generator through a fifth pipeline. According to the device and the method provided by the invention, independent cooling and graded cooling of the generator controller and the generator can be realized, the working efficiency of the cooling system is improved, and the energy consumption is reduced.

Powertrains of hybrid electric vehicles, control systems for controlling the powertrains, and methods for controlling the powertrains are disclosed. The powertrain includes an engine, a motor / generator, a battery and a DC bus. The control system is configured to: operate the motor / generator in a first mode when the battery is connected to the DC bus; operate the motor / generator in a second mode when the battery is disconnected from the DC bus, wherein the second mode is a voltage control mode in which the motor / generator controls a voltage of the DC bus; and adjust at least one parameter of the powertrain to assist the motor / generator in controlling the voltage of the DC bus in the second mode.

The invention relates to the technical field of temperature control, in particular to an electric heating steam generator control system and a using method, and the system comprises an operation state monitoring module, a dynamic power distribution module, a temperature pressure compensation module, an abnormity monitoring and early warning module and an operation control optimization module. According to the method, by comprehensively mastering the multi-dimensional operation data of the steam system, the over-limit value of the steam temperature adjustment rate is effectively screened, the heating power requirement is accurately evaluated, adjustment lag is avoided, the dynamic compensation power interval adjustment ensures the steam supply stability, heat loss compensation is optimized, and the heat supply quality is improved; the efficient early warning system recognizes pipeline blockage and pressure abnormity, safety is improved, steam flow distribution is optimized, operation efficiency is improved, and reasonable utilization of energy is achieved.

The invention belongs to the technical field of generator control, and particularly relates to a starting and charging control method for a parking generator system, which comprises the following steps: a generator performs self-starting or hand-pulling starting according to the voltage of a storage battery; when the generator is self-started, the stepping motor opens the accelerator and adjusts the air door and the accelerator according to the environment temperature to complete self-starting; when the generator is started by hand pulling, ignition action is carried out, after the generator is ignited, the stepping motor gradually accelerates the opening speed of the air door according to the environment temperature from low to high, and starting is completed; after the generator is started, entering a constant-current charging mode to charge an accumulator jar, converting into a constant-voltage charging mode after the voltage of the accumulator jar exceeds a preset voltage, and automatically closing the generator when the vehicle is started or the charging current is lower than a preset current in the charging process; by means of the method, the parking generator can be rapidly and automatically started, and more energy is saved in the charging process.

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 provides an aircraft generator controller equivalent closed-loop test platform and test method, and belongs to the field of generator controller test, and the platform comprises an upper computer which is used for generating a generator equivalent model and deploying the generator equivalent model on a lower computer for operation; the lower computer comprises a controller and a multifunctional data board card, the controller is used for operating the generator equivalent model, and the multifunctional data board card is used for obtaining the excitation voltage output by the generator controller and outputting the voltage of the voltage regulating point to the generator controller; the signal conditioning equipment comprises a voltage sensor and a power amplifier, the voltage sensor is used for processing the excitation voltage output by the generator controller, and the power amplifier is used for amplifying the voltage of the voltage regulating point output by the multifunctional data board card; the external power supply comprises a direct-current power supply and a three-phase alternating-current power supply, the direct-current power supply is used for externally supplying power to the generator controller, and the three-phase alternating-current power supply is used for simulating three-phase voltage of the permanent magnet generator.

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 invention relates to the technical field of generator control, and discloses an emergency control method, device and equipment for a generator set controller and a medium, the same generator set at least comprises two generator controllers, the method is applied to any current generator controller in the generator set, and the method comprises the following steps: determining whether a target generator controller has a fault or not; the target generator controller is another generator controller in the generator set; if the target generator controller breaks down, power supply of the target generator controller is cut off, and input of a first current and voltage signal and output of a control signal based on a target generator are conducted; and accessing the first current and voltage signal, and carrying out parallel operation control on the target generator and the current generator. According to the invention, the generator controlled by the faulty generator controller can be restarted to solve related faults caused by the faulty generator controller, and the normal generator controller automatically carries out parallel operation control on all generators without manpower, so that the operation reliability of the system is improved.

The invention discloses an extended-range vehicle-to-vehicle charging system and method, a discharging vehicle and a charging vehicle, and belongs to the technical field of vehicle charging. A vehicle-to-vehicle charging wire harness in the system is used for connecting a first direct-current charging socket and a second direct-current charging socket; a main negative contactor in the system is used for disconnecting a rechargeable energy storage module from a charging vehicle; a generator controller in the system is connected with a range extender through a high-voltage three-phase wire harness and used for converting three-phase alternating current output by the range extender into direct current; a fast charging contactor in the system is used for transmitting charging current output by a range extender to a second direct current charging socket through a vehicle-to-vehicle charging wire harness connected with a first direct current charging socket. By adopting the system, direct-current charging can be directly carried out on the vehicle through the range extender, and the charging efficiency is improved.

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 multi-directional deep learning-based network construction type wind turbine generator control method and system. The method comprises the following steps: S1, obtaining parameters of a network construction type wind turbine generator; s2, establishing a linearized state space model of the network construction type wind turbine generator according to the parameters of the network construction type wind turbine generator; s3, constructing a multi-directional gating circulation unit neural network, training the multi-directional gating circulation unit neural network, and outputting a model compensation amount to correct the linearized state space model of the network construction type wind turbine generator; and S4, establishing a quadratic programming cost function by minimizing the output frequency deviation and the reactive power deviation of the network construction type wind turbine generator, and obtaining an optimal control instruction of the network construction type wind turbine generator by solving an optimal solution of a quadratic programming problem and performing rolling optimization based on the corrected linearized state space model of the network construction type wind turbine generator. The method has the advantages of improving control precision and dynamic response speed and the like.

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 virtual synchronous generator low voltage ride through control method based on adaptive power compensation. The self-adaptive power compensation-based virtual synchronous generator low-voltage ride-through control method comprises the following steps of establishing a virtual generator control equation of an energy storage converter; a self-adaptive power compensation controller is constructed, and a virtual synchronous generator control equation based on self-adaptive power compensation is obtained; a compensation amount calculation equation of self-adaptive active power and self-adaptive reactive power is obtained through calculation of a self-adaptive power compensation controller; and during low voltage ride-through, calculating the compensation amounts of the adaptive active power and the adaptive reactive power, compensating the compensation amounts to the virtual synchronous generator control equation based on adaptive power compensation, and adjusting the energy storage converter to output the active power and the reactive power. The invention provides a virtual synchronous generator low-voltage ride-through control method based on adaptive power compensation. The output overcurrent of a converter can be effectively reduced during low-voltage ride-through.