221results about "Generator control details" patented technology

The invention provides a method for constructing a digital twinborn body of a wind turbine generator, and belongs to the technical field of wind power generation, and the method comprises the steps: constructing a refined mechanism model, converting a historical meteorological data sequence into a physical field parameter sequence, inputting the physical field parameter sequence into the refined mechanism model, and outputting a simulation output sequence; acquiring a simulation output sequence and an actual operation output sequence of the wind turbine generator, and calculating a derivative dynamic time warping distance between the simulation output sequence and the actual operation output sequence; sparsification processing is carried out on parameter vectors of the refined mechanism model, and a key parameter subset influencing the derivative dynamic time warping distance is screened out; taking a minimum derivative dynamic time warping distance as a target function, and adopting a moss optimization algorithm to carry out optimization solution on the key parameter subset to obtain an optimal parameter combination; and backfilling the optimal parameter combination into corresponding parameters of the constructed refined mechanism model to obtain the digital twin model of the wind turbine generator. And the model precision is improved.

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.

Provided in the present application are a motor zero position angle calibration method, a vehicle and a storage medium. The method is applied to the field of vehicles, and the method comprises: if an obtained control signal sent by a vehicle control unit is a calibration mode setting signal, reading a reserved bit value of the calibration mode setting signal; if the reserved bit value is a preset calibration value, performing zero position angle calibration processing on a vehicle motor on the basis of the calibration mode setting signal, so as to obtain a calibrated zero position angle; and updating the motor zero position angle on the basis of the calibrated zero position angle, and using the updated motor zero position angle to control the vehicle motor to operate. The method can again determine whether the reserved bit value meets the preset calibration value after reception of the calibration mode setting signal, and uses an idle reserved bit as an identification bit, such that the vehicle motor is prevented from mistakenly entering the calibration mode under signal interference, thereby improving the accuracy of zero position angle calibration, and further ensuring the normal operation of the vehicle motor.

The invention discloses an energy-saving control method and system for a servo hydraulic motor, and the method comprises the steps: detecting and obtaining the initial state of a load, and determining the initial flow and initial pressure required by the servo hydraulic motor; the initial rotating speed and the initial torque of the servo hydraulic motor are set, the power needed by the servo hydraulic motor is calculated, and therefore the servo hydraulic motor is driven to operate; real-time data of the servo hydraulic motor in the operation stage are obtained, the deviation of the servo hydraulic motor is calculated according to the real-time data, and the operation rotating speed and the operation torque of the servo hydraulic motor are adjusted in real time according to the deviation; when the servo hydraulic motor is in the operation stage, the temperature of hydraulic oil is monitored in real time, when the temperature of the hydraulic oil exceeds a set threshold value, heat of the servo hydraulic motor is recovered through a heat recovery device, and the recovered heat is stored through a phase change material; when the servo hydraulic motor is in the braking stage, electricity is generated through reverse rotation of the servo hydraulic motor, and electric energy generated by electricity generation is stored in the energy storage device.

The invention provides a wind turbine generator control parameter identification method and system based on subsynchronous oscillation characteristics, and the method comprises the steps: carrying out the phase margin sensitivity analysis based on the main oscillation mode of a wind turbine generator grid-connected system, and determining a to-be-identified control parameter; constructing a simulation model of the wind turbine generator, determining an initial value of a to-be-identified control parameter, and determining a to-be-identified control parameter-active output parameter group; performing analog simulation on the simulation model of the wind turbine generator, and determining oscillation characteristics; performing model training on a preset neural network model according to the to-be-identified control parameter-active output parameter group and the oscillation characteristics, and determining the neural network model after model training is completed; and inputting the actual oscillation characteristics and the actual active power output into the neural network model which completes model training, and determining an actual to-be-identified control parameter identification result. According to the method and the device, the key control parameter identification of the wind turbine generator is realized by adopting the finite oscillation data, the calculation amount is small, and the identification efficiency is high.

Electrical apparatus (20) includes an inverter (24) having input terminals for receiving DC input power and output terminals for coupling to an AC power grid. A pulse-width modulation (PWM) generator and drivers (26) drive the switches so as to control respective amplitudes, frequencies, and phases of the output current waveforms of the inverter. Control circuitry (28) receives measurements of respective time-varying voltages and currents on the input and output terminals, computes a model (40) that includes three virtual currents flowing in a synchronous machine that is emulated by the apparatus, wherein the three virtual currents are associated respectively with the three output current waveforms, and controls the PWM generator and drivers responsively to the three virtual currents so as to synchronize the amplitudes, frequencies, and phases of the three output current waveforms of the inverter with the three phases of the AC power grid.

The present invention provides a control system for a power generation system, comprising a generator coupled to a turbine via a shaft. The control system includes a memory storing instructions. The control system also includes a processor coupled to the memory and configured to execute the instructions. When the instructions are executed, the processor receives a direct current (DC) bus voltage from an automatic voltage regulator (AVR), wherein the AVR is configured to control the voltage characteristics of the generator and determine the speed of the generator based on the DC bus voltage.

The invention discloses multipurpose electrotherapy equipment, and relates to the technical field of medical instruments, in particular to the multipurpose electrotherapy equipment which comprises a box body, a motor in the box body, a rotating head driven by the motor, a connecting column, a supporting rod, a connector, a piston rod and a power generation plate. After the motor works, the piston rod is driven by the transmission mechanism to reciprocate to impact the power generation plate to generate current. Generated current is transmitted to a current distributor through a current transmitter and a first wire, the current distributor can steplessly adjust output voltage between 6 volts and 25 volts through a current adjusting button according to pathological types, and the current is transmitted to application ends such as a foot pedal through a second wire to be used for electrotherapy. The device is provided with a display screen for monitoring electrical parameters in real time and ensuring treatment safety. The equipment is stable in power generation, the output current can be finely adjusted according to the adaptation period of a patient, the operation is simple and convenient, and electrotherapy requirements of various pathologies can be effectively met.

The invention discloses an integrated control method for an aircraft power supply system. The method comprises the following steps: directly and electrically connecting an engine controller with a generator output contactor, a transformer output contactor, a storage battery output contactor, a transformer rectifier and a storage battery; the engine controller receives the temperature signal, the output voltage signal and the output current signal of the transformer rectifier in real time, judges the working state of the transformer rectifier, and carries out output control and fault protection on the transformer rectifier according to the working state of the transformer rectifier; and the generator controller receives the temperature signal, the voltage signal and the current signal of the storage battery in real time, judges the working state of the storage battery, and performs output control and fault protection on the storage battery according to the working state of the storage battery. The types and the number of airborne equipment are reduced, three different types of controllers, namely a generator controller, a direct current control protector and a storage battery controller, are combined into a whole, and the economical efficiency of a development stage and an external field use and maintenance stage is improved.

A power generation system for supplying power to at least one electrical grid of an aircraft, the power generation system comprising a control device configured to receive a universal operational setpoint and to output a first parameterized setpoint (PCONS1) of a first converter (C1) and a second parameterized setpoint (PCONS2) of a second converter (C2), each parameterized setpoint (PCONS1, PCONS2) being a power supply for switching between the converters (C1, C2) and the first converter (C1) and the second converter (C2). The control device is controlled by a voltage regulation setpoint (RegU) of the distribution voltage or an auxiliary regulation setpoint (RegA) for the turbine, the control device being configured to output a parameterized setpoint with a stable delay with respect to the parameterized setpoint of the voltage conversion (TransU) for the auxiliary conversion (TransA) such that the voltage regulation (RegU) is extended during the auxiliary conversion (TransA).

A solar power system which includes an electric engine power generator assembly to produce and store electrical energy as needed, when solar energy is not available or the level of solar energy is insufficient, to maintain a full or substantially full stored power charge level.

An electrical generation system for supplying at least one electrical network of an aircraft. The electrical generation system includes a control device configured to receive a general operating setpoint and to output a first parameterization setpoint for the first converter and a second parameterization setpoint for the second converter. Each parameterization setpoint being either a voltage regulation setpoint for slaving the converter to a distribution voltage or an auxiliary regulation setpoint for the turbomachine. The control device being configured to output a parameterization setpoint in relation to an auxiliary transition with a stabilization delay relative to a parameterization setpoint in relation to a voltage transition so that the voltage regulation is extended during an auxiliary transition.

The application provides a wind turbine digital twin construction method, belonging to the technical field of wind power generation. The method comprises: constructing a refined mechanism model, inputting a historical meteorological data sequence into the refined mechanism model after converting the sequence into a physical field parameter sequence, and outputting a simulation output sequence; obtaining the simulation output sequence and the actual operation output sequence of the wind turbine, and calculating the derivative dynamic time warping distance of the two sequences; performing sparse processing on the parameter vector of the refined mechanism model, and screening out a key parameter subset affecting the derivative dynamic time warping distance; taking the minimization of the derivative dynamic time warping distance as an objective function, and using a moss optimization algorithm to optimize and solve the key parameter subset to obtain an optimal parameter combination; and backfilling the optimal parameter combination into the corresponding parameters of the constructed refined mechanism model to obtain a wind turbine digital twin model. The model precision is improved.

A method for a power system is disclosed. The method includes receiving signals, activating switches to pass a current from a power source to an apparatus. The method also includes deactivating switches and bypassing the power source. The power source may be a photovoltaic power source. The signals may be power line communication (PLC) signals.

An automobile double-motor power generation system comprises a power generator, a special power generator, a secondary gear train, a primary gear train and an engine, the power generator is mounted at the upper left corner of the engine, the special power generator is mounted at the lower left corner of the engine and connected through the secondary gear train, the power generators are connected through the primary gear train, and the power generator is mounted at the lower left corner of the engine. A flywheel is arranged on the lower portion of the engine and connected with a power output shaft of the engine, the engine transmits power to the flywheel through the power output shaft by doing work and drives the flywheel to rotate, and a belt installed on the flywheel is driven by the flywheel to move. And the generator and the special motor are finally driven to rotate and generate electricity through the movement of each wheel disc on the engine. According to the utility model, the special generator and the generator are integrated on one engine, so that the utilization space of the whole vehicle can be saved, two different power supply modes are provided for the whole vehicle, and a larger operation space is provided for the arrangement of the whole vehicle.

An aircraft turbomachine (T) comprising an electric machine 1 connected to a transmission line 2 and a control device 3 to determine the current in the electric machine so that it provides an electric

Disclosed are a control method and a control device for a permanent magnet motor, wherein the control method comprises: determining active current reference initial values and reactive current reference initial values of the permanent magnet motor in a current control period; searching for optimal active current reference values and reactive current reference values in the current control period based on the active current reference initial values and the reactive current reference initial values, with the maximum torque current ratio in the current control period as the target; and controlling the permanent magnet motor to operate based on the optimal active current reference values and the reactive current reference values; wherein the torque current ratio is calculated based on a torque instruction value received by the permanent magnet motor from a fan main controller and an output current value of the permanent magnet motor. The technical solution of the disclosure can avoid the influence of parameter changes of the permanent magnet motor on the maximum torque current ratio control, thereby realizing accurate optimal torque current ratio control.

The invention belongs to the technical field of power grid automatic control, and discloses an interconnected synchronous generator safety control method based on game processing spoofing attacks, which constructs a multi-party dynamic game framework including spoofing attacks, optimal control input and an optimal event triggering mechanism, and converts a safety control problem into a multi-subject non-cooperative game; a Hamiltonian equation is solved on line by designing a dynamic optimal event triggering condition and combining a reinforcement learning algorithm with fixed time convergence, and an optimal control strategy of an interconnected synchronous generator system model is generated. According to the method, rapid recovery of state variables such as a power angle and a rotating speed can be ensured when the cheating attack is suffered, meanwhile, the number of times of communication triggering is remarkably reduced, the security and the resource utilization efficiency of the system are effectively improved, and the problems of stable operation and communication resource optimization of the interconnected synchronous generator under the cheating attack are solved.

The application discloses a double-fed induction generator rotor speed estimation method based on maximum cross-correlation entropy weighting, and belongs to the field of motor control. The method creatively applies cross-correlation entropy theory to noise covariance estimation of EKF, and designs a complete algorithm system containing dynamic weighting, adaptive kernel bandwidth, mixed robust weighting and numerical reinforcement. The progressiveness is reflected in that the method comprehensively solves the shortcomings of traditional methods in response speed, parameter disturbance resistance and non-Gaussian noise resistance. Theoretical proof and comprehensive simulation experiments prove that the method has better estimation accuracy, robustness and reliability in complex industrial environments such as wind power generation.

The invention relates to the technical field of generator set controllers and storage battery detection, in particular to a generator set controller with a storage battery aging detection function, which comprises a microprocessor, and a storage battery voltage acquisition module and a starting motor control module which are connected with the microprocessor. The battery voltage acquisition module continuously samples the voltage of the storage battery for multiple times before the starting motor is started, continuously samples the voltage of the storage battery for multiple times again in the process that the starting motor keeps starting, and accurately captures characteristic values of two key parameters, namely the voltage before starting and the large-current discharge voltage; and the aging degree percentage of the storage battery is calculated based on the two parameters in combination with a preset formula. Quantitative evaluation of the health condition of the storage battery can be achieved by expanding a small number of hardware circuits on the basis of an existing generator set controller, the reliability of the generator set is improved, no extra testing equipment is needed, detection can be completed only through internal modules of the system, and the method has the advantages of being non-invasive, high in real-time performance, easy and convenient to operate and the like.

The invention discloses a power assembly and a preparation method thereof, a power module and equipment comprising the power module, and relates to the field of vehicle motor control equipment, and the power assembly comprises the power module and a capacitor assembly which are stacked; the capacitor assembly is connected with a first terminal and a second terminal; the power module comprises a plurality of sub power modules; the power module comprises at least one third terminal and at least one fourth terminal; at least two sub power modules are connected with a third terminal and a fourth terminal; the first terminal is connected with the third terminal, and the second terminal is connected with the fourth terminal. According to the technical scheme, the power module and the capacitor assembly are arranged in the stacked mode, compared with a conventional scheme that the power module and the capacitor assembly are connected in a coplanar mode, the layout area of the power assembly can be reduced, and miniaturization design of the power assembly is facilitated; and the at least two sub-power modules share the third terminal and the fourth terminal, so that the number of terminals and series inductance can be reduced.

An apparatus comprising a signal transformer coupled to a power line and a signal transmission, reception, or detection circuit. A sensor is configured to be responsive to the power line current or magnetic flux generated in a ferrite core of the signal transformer. When the sensor indicates that the flux generated by the power line current mat cause an attenuation of the signal strength, a second circuit generates a current through a flux cancelling winding that cancels at least some of the flux generated by the power line current.

The invention relates to a self-adaptive voltage regulation railway vehicle axle end power generation power supply, and belongs to the technical field of railway vehicle axle end power generation. A voltage conversion module and a current limiting protection module can cope with complex and changeable operation conditions of a railway wagon, and a boost-buck chip is matched with an efficient conversion circuit composed of an MOS tube and an energy storage inductor to form a high-efficiency conversion circuit; according to the invention, wide input voltage range regulation and control can be realized, stable output voltage can be output, and the problems of insufficient power supply at a low speed and energy waste at a high speed in the prior art are solved; meanwhile, a segmented current-limiting protection mechanism based on a sampling resistor can dynamically adjust a protection threshold value according to load requirements, so that equipment is prevented from being damaged by overcurrent, and the power generation potential is exerted to the maximum extent.

The installation (100) comprises: - a continuous bus (116) to which at least one electrical load (120A, 120B) is intended to be connected; - several electrical sources (110) connected to the continuous bus (116), these electrical sources (110) including a turbomachine electrical source (110BP, 110HP, 110APU); - for each electrical source (110), a local controller (124) designed to control the electrical source (110) in question by implementing drastic control based on a drastic gain associated with the electrical source (110) in question; and - a central controller (122); Each local controller (124) is designed to implement a dead zone with a variable height, depending on a command received from the central controller (122), this height (H) being able to be zero;and the central controller (122) is designed to control: • selectively any of the local controllers (110), including that of the turbomachine power source (110BP, 110HP, 110APU), so that its dead zone has a non-zero height, and • at least one other local controller (110) so that its dead zone has a different height. Figure for the abstract: Fig. 1;

The utility model relates to the technical field of automobiles, and discloses an automobile generator voltage regulation control module which comprises a module circuit board, four fixing sleeves are installed on the upper surface of the module circuit board in a rectangular array mode, and the lower ends of the four fixing sleeves all penetrate through the lower surface of the module circuit board. L-shaped mounting plates are welded to the left end and the right end of the upper surface of the module circuit board, T-shaped grooves are formed in the upper ends of vertical plates of the two L-shaped mounting plates, the auxiliary stabilizing mechanism is arranged in the two L-shaped mounting plates, the auxiliary stabilizing mechanism comprises a trapezoidal stabilizing plate and a push plate, the trapezoidal stabilizing plate is slidably mounted in the T-shaped groove in the left side, and the push plate is slidably mounted in the trapezoidal stabilizing plate. Two adjusting bolts are rotated, so that two push plates push two trapezoidal stabilizing plates, the two trapezoidal stabilizing plates are lifted, the two trapezoidal stabilizing plates move upwards and abut against the inner wall of an ECU box, four screws are assisted to stabilize a module circuit board, and therefore the safety of the module in the using process is improved; and the use efficiency of the module is improved.

A method for controlling an electric bicycle comprises: detecting a pedal speed and a wheel speed; generating a wheel torque command by applying a wheel speed parameter to a difference between a wheel speed command generated by multiplying the pedal speed by a gear ratio and the wheel speed; generating a pedal torque command by applying a pedal speed parameter to the difference between the wheel speed command and the wheel speed; controlling a motor based on the wheel torque command; and controlling a generator based on the pedal torque command.

A method for controlling a generator (1) comprising an inverter (2) and an electric energy source (3), the generator (1) being configured to deliver an output electrical value (V S ) to an electricity distribution grid, the inverter (2) being controlled by a control law (5) comprising a set of fixed values of parameters (p ref ) used to model the operation of a synchronous virtual generator, such that the control law (5) is configured to determine at least one target output value (V S,target ) that must be delivered by said generator (1) to the electricity distribution grid.

An electrically operated agricultural planting appliance (110, 202) is used with an agricultural vehicle (100, 204). The planting appliance (110) may include a generator (130) for generating electrical power to power electronic components (123, 203) located on row units (118) of the planting appliance (110), and to power other functions of the planting appliance (110), such as lifting and / or pivoting. Operating the planting appliance (110) via electric power instead of hydraulic power eliminates the need (12) for hydraulic conduits. A wireless data communication and control system is used with an agricultural planting appliance (110, 202) and an agricultural vehicle (100, 204). The system provides bidirectional data communication and control between a control unit (206) and the planting appliance (110). The system eliminates the need (12) for wiring, and also provides the ability to remotely communicate with and control the planting implement (110). A user may wirelessly and remotely control the planting appliance (110) by inputting a command into the control unit (206).