134results 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.

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 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 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.

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 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.

A method for controlling a wind turbine connected to a power grid is provided. The method includes generating a turbine control reference signal and a power grid control reference signal. The turbine control reference signal is provided to a machine-side unit of a power or torque control system of the turbine to control the amount of energy generated by the turbine. The power grid control reference signal is provided to a line-side unit of the power or torque control system to control the amount of energy transmitted to the power grid based on the power grid control reference signal.

An electrical converter includes an inverter configured to provide at least one input AC voltage from an input DC voltage. The electrical converter further includes an AC-to-AC voltage converter configured to provide an output AC voltage from the at least one input AC voltage such that the output AC voltage has an amplitude that depends on a frequency of the at least one input AC voltage. A rectifier designed is configured to provide an output DC voltage from the output AC voltage.

A controller for an e-machine of a turbomachine including a support structure, a printed circuit board, and a fastener arrangement that retains the printed circuit board on the support structure, the fastener arrangement including a resilient member that resiliently biases the printed circuit board towards the support structure.

The invention relates to a method for controlling a drive system (M) comprising a turbine engine (TM) coupled to an electric machine (MET), an electronic control unit (20) for controlling the drive system, the electronic control unit being connected to a power converter (12), and a driver for selectively driving the electric machine in an engine mode and a generator mode in accordance with a reference torque filtered in an adaptive manner in order to exclude an excitation frequency range of at least one torsional mode of the drive system in accordance with a stator phase current of the electric machine. The invention also relates to a corresponding drive system and to an aircraft comprising such a drive system.

The utility model discloses a laminated motor controller structure and a starting motor controller, the structure comprises a main control board, a driving board and a power supply board, the driving board, the main control board and the power supply board are sequentially arranged from top to bottom, the driving board and the power supply board are split and are arranged on two mutually independent circuit boards, and the laminated motor controller structure further comprises a shielding cover, and the shielding case is arranged between the two mutually independent circuit boards. According to the utility model, on one hand, space is saved, and on the other hand, working performance of the generator controller is improved. The invention further provides a starting generator controller for the aerospace equipment.

The utility model belongs to the technical field, and particularly relates to a multifunctional automatic voltage regulator for a direct-current generator, which comprises a casing, a control circuit board and a generator, the control circuit board is fixedly connected onto the casing and electrically connected with the generator, and the casing is fixedly connected with the casing. The control circuit board comprises a voltage regulation module circuit and a multifunctional module circuit, the voltage regulation module circuit is electrically connected with the multifunctional module circuit, the multifunctional module circuit is electrically connected with the generator, and the voltage regulation module circuit is electrically connected with the generator. According to the utility model, the voltage regulation control circuit and the multifunctional module circuit are designed on one circuit board, so that the integration level of equipment is improved, and the system structure is simplified.

The invention provides an efficient power generation system for a low wind speed section of a doubly-fed generator, and the system comprises a stator short-circuit contactor which is connected between a stator of the doubly-fed generator and a stator grid-connected contactor. When the wind speed is low and the rotating speed of the generator is lower than a doubly-fed power generation range, a motor stator is short-circuited through a stator short-circuit contactor, and a unit is grid-connected to generate power in an asynchronous motor mode. And when the wind speed is high and the rotating speed of the generator enters a doubly-fed power generation range, the stator short-circuit contactor is disconnected, and the unit performs grid-connected power generation in a doubly-fed motor mode. The stator short-circuit contactor is connected between the stator of the doubly-fed generator and the stator grid-connected contactor, when the rotating speed of the low-wind-speed generator is lower than the doubly-fed power generation range, the stator of the motor is short-circuited through the stator short-circuit contactor, and the unit is in grid-connected power generation in an asynchronous motor mode. The power generation capacity of the wind turbine generator set under the low-wind-speed condition can be fully released, the overall power generation benefit of a wind power plant is improved, and efficient and stable operation of the wind turbine generator set under the low-wind-speed condition is achieved.

A direct-current control circuit integrated with an ignition function relates to the technical field of generator control, a high-voltage pack of an igniter is directly integrated on an engine, the igniter is directly driven by electric energy generated by a generator by improving the control circuit, an ignition winding in the generator is removed, and the power generation efficiency of the generator is improved. The production cost of the generator is reduced; comprising a generator and an engine, a high-voltage pack is integrated on the engine, the output end of the engine is connected with the input end of the generator, the output end of the generator is connected with a rectifier bridge unit, and the output end of the rectifier bridge unit is connected with an isolation voltage division unit. The isolation voltage division unit is used for carrying out voltage reduction and voltage division output on the direct current output by the rectifier bridge unit, the isolation voltage division unit comprises at least one output end, one output end of the isolation voltage division unit is electrically connected with the ignition circuit unit, and the output end of the ignition circuit unit is electrically connected with the high-voltage pack.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, The control unit (22) may further be configured to sequentially select the contributions of the LP generators (14, 16, 18) through the LP generators (14, 16, 18), in particular each pulse sequence may start with a different LP generator (14, 16, 18).

An electric machine controller arranged to direct a power converter to cause a pulsed operation of an electric machine in selected operational ranges to deliver a desired output and to cause a continuous operation of the electric machine in selected operational ranges is provided. A ramp generator is adapted to provide a ramping between the pulsed operation and the continuous operation. In some embodiments, the ramp generator utilizes a quadratic, cubic or higher order ramping function. In some embodiments, during a first portion of the transitional period, the ramp generator causes pulsing between a first ramped transitional torque level and a second ramped transitional torque level that is lower than the first transitional torque level, and during a second portion of the transitional period, the ramp generator causes the electric machine to generate substantially zero torque in intervals between transitional pulses while ramping the first ramped transitional torque level.

A method for calibrating a control system of a generator (106) with a rotor (110) and a stator (112), comprising the following steps: Supplying a source current to the stator (112); Determining a relative rotor speed based on a sensor signal provided by a rotor speed sensor (130); Determining a relative rotor position associated with the relative rotor speed; Determining an absolute rotor position based on the sensor signal and phase currents, featuring: Applying a phase control loop to one or more of the phase currents of the stator (112), Transforming the phase currents into two DC signals, Control one of the two DC signals to zero, and Determining the absolute rotor position based at least partially on a phase of the DC signals; and Calibrating the sensor signal based on an offset between the relative rotor position and the absolute rotor position.

This invention discloses an adaptive load-based method and system for temperature regulation of a hydro-generator, relating to the field of hydropower control technology. It involves real-time acquisition of multi-source operating data, time alignment, and feature fusion. The fusion result is input into a physically constrained thermal state prediction model to obtain the generator's predicted thermal state and instantaneous heat generation information, generating an advanced cooling regulation amount based on the heat generation mechanism. The system employs a control architecture that parallels baseline safety versions and candidate strategy versions. Candidate strategies are updated online in the background, and control commands to be verified are output. Before issuance, all control commands undergo an online safety verification mechanism to assess command consistency and condensation risk. If the verification fails, the system automatically blocks and triggers strategy rollback or switches to a degraded control mode. This invention overcomes the temperature regulation lag problem caused by thermal inertia, balancing regulation advancement, model physical consistency, and operational safety under complex operating conditions, and is suitable for the safe operation of large hydro-generator units.