505results about "Generator control details" patented technology

The invention relates to the technical field of new energy automobile generator performance detection, and discloses an automobile generator performance detection method and device. The method comprises the steps of collecting working condition data such as voltage, current, rotating speed and internal temperature of a generator in real time through a multi-source sensor, establishing a correlation model among the voltage, the current, the rotating speed and the internal temperature based on a regression analysis method, and dynamically adjusting safety thresholds of the voltage and the current according to the model. Compared with the prior art that monitoring depends on a fixed threshold value, especially under complex working conditions such as high load, rapid acceleration and high temperature conditions, the technical problem that working condition changes cannot be adapted in real time is solved, real-time monitoring is achieved by dynamically adjusting the voltage and current threshold values and combining the rotating speed and the internal temperature change rate, and the real-time monitoring efficiency is improved. The stable operation of the generator under the multi-dimensional working condition is ensured, so that the problem of equipment damage caused by overload is avoided, the safety of the system is improved, and the service life of the system is prolonged.

The invention relates to a method for controlling a power generating unit. The method includes determining a virtual impedance value, determining a virtual grid power based on the virtual resistance value and the grid current, determining a virtual synchronous machine rotational speed and / or a synchronous machine angle of a virtual synchronous generator, and determining a voltage reference for controlling a line side converter to generate the desired reactive power based on the virtual synchronous machine rotational speed or angle, a virtual voltage and the voltage magnitude reference.

The present disclosure provides a control method and control apparatus for a voltage source-type wind turbine. The control method comprises: performing a proportional-integral-derivative operation on a deviation between a DC bus voltage measurement value and DC bus voltage reference value of a wind turbine to obtain an active power deviation; determining a virtual angular frequency deviation on the basis of the active power deviation; determining a virtual internal potential phase on the basis of the virtual angular frequency deviation; obtaining a d-axis virtual impedance output and an q-axis virtual impedance output by means of inputting a grid-connected current in a dq coordinate system to a virtual impedance module; on the basis of the virtual angular frequency deviation, a reactive power setting value and reactive power measurement value of the wind turbine, a rated voltage amplitude of a grid, the d-axis virtual impedance output and the q-axis virtual impedance output, determining a d-axis component and q-axis component of a modulation voltage; and controlling an injection voltage of a grid-connected point of the wind turbine according to the virtual internal potential phase and the d-axis component and q-axis component of the modulation voltage.

Systems, method, and computer readable medium are provided for a controller for a generator. The system includes a rectifier for converting a first AC signal generated by the generator to a first DC signal; a first DC-DC associated with energy storage and a first mode; a second DC-DC associated with an inverter and a second mode; a switch for alternately toggling between the first DC-DC and the second DC-DC, wherein the first mode prevents output to the electrical grid, and the second mode enables inversion of the second DC signal to a second AC signal via the inverter; and a processor that uses the indicator to operate the switch to operate the generator in the first mode when a connection to the grid does not conform with a parameter, and operate the generator in the second mode when the connection to the grid conforms with the parameter.

The invention relates to the technical field of generator set control, in particular to an emergency generator set control method and system, and the method comprises the steps: collecting load power data and rotating speed data of an emergency generator set; calculating a power fluctuation coefficient and a load dramatic change significance of each time period; obtaining a generator set fluctuation coefficient of each time period; calculating a rotating speed peak steep coefficient and a rotating speed peak ordered coefficient of each time period; obtaining an interference obvious coefficient of each time period; obtaining a rotating speed disorder fluctuation value of the emergency generator set; and controlling the emergency generator set based on the unordered fluctuation value of the rotating speed in combination with a PID control algorithm. According to the invention, the defect of poor anti-interference capability of the generator set in the control process is overcome.

A method for operating an electromagnetic power generator for a wheel and to a power generator for a wheel, in particular of a vehicle. The power generator comprises a rotatably mounted stator, which is held in an equilibrium position by virtue of the eccentric mass center of gravity of the stator, and a rotor, which rotates in the stator and is driven by the wheel. In order to realign a stator which is rotating in an undesired manner and is overrunning during a malfunction produced by shocks for example, the stator is supplied with a current.

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.

A wind turbine and energy storage combined inertia response method and a wind turbine and energy storage combined inertia response apparatus are disclosed. The wind turbine and energy storage combined inertia response method includes: determining, in response to detecting a change in a power grid frequency, an inertia response demand power of a wind turbine and energy storage combined system, wherein the wind turbine and energy storage combined system comprises a wind turbine and an energy storage apparatus connected to the wind turbine; and controlling, based on the determined inertia response demand power and by a mixed feedforward and feedback control manner, the energy storage apparatus and a rotor of the wind turbine to generate a power increment.

The invention relates to an aircraft turbine engine (T) comprising an electric machine (1) connected to a transmission line (2) and a control device (3) configured to determine the currents flowing through the electric machine (1) so that it provides an electric machine torque in accordance with a control torque, wherein the control device (3) comprises a correction module (4) configured to correct the torsional mode (Mt) of the transmission line (2), wherein the correction module (4) is configured to determine a time measurement of a torque parameter of the rotor (12) of the electric machine (1) over a monitoring range, calculate a correction torque from the time measurement over the monitoring range, and calculate the control torque from a reference torque (TRQcons) and the correction torque.

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, - A balancing circuit containing components that allow current to flow in only one direction, in particular a diode (D) or a component acting like a diode, is connected between the two LP generators (14, 16, 18).

A method for controlling operation of a generator for a wind turbine is disclosed. At least one amplitude of a harmonic in the gearbox vibrations is determined. A torque modulating signal for the generator is generated. A phase angle and the amplitude are adjusted during operation of the generator, until a minimum in amplitude of a resultant vibration is reached, thereby obtaining an adjusted torque modulating signal. The adjusted torque modulating signal is injected into the generator, resulting in the resultant vibration of vibrations of the gearbox and vibrations of the generator, corresponding to the harmonic in the gearbox vibrations, being reduced.

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 LP generator (14, 16, 18) includes an energy storage component (C1, L1), and in use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; each LP generator (14, 16, 18) when in use provides at its output an LP generator value corresponding to the value of an energy storage component (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18); Several low power (LP) generators (14, 16, 18); - 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, At least one, preferably several and most preferably all LP generators (14, 16, 18) comprise an LP generator value limiting circuit (151), e.g. a voltage limiting circuit or a current limiting circuit.

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: a plurality of 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) Multiple 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 at least a plurality of states of the HP generator (10) in use; - 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) furthermore determines the contribution of the LP generators (14, 16, 18) according to the following characteristics: The output of the coupling (20) and / or the output of the HP generator (10) is a stepped waveform, particularly at the rising and / or falling edges of a pulse and / or during that pulse. The method is configured to select one or some combination of the above to be achieved.

The invention discloses a doubly-fed fan parameter identification method based on an improved sparrow algorithm, and the method comprises the steps: analyzing the sensitivity of doubly-fed fan parameters, selecting key control parameters, building a doubly-fed fan low-voltage ride-through transient model in a PSCAD (Power System Computer Aided Design), obtaining a plurality of groups of output data through adjusting the key control parameters, and carrying out the identification of the doubly-fed fan parameters. Constructing a multi-target error function of the original model and the identification model; the improved sparrow algorithm is adopted to optimize and solve the established multi-target error function based on the key control parameters and the output data, the identification result of the to-be-identified control parameters of the doubly-fed fan is obtained, an identification model obtained through identification and an original model are compared and verified, the key control parameters in the transient model of the doubly-fed fan can be accurately and reliably identified, and the identification accuracy of the to-be-identified control parameters of the doubly-fed fan is improved. The problems that a traditional doubly-fed fan parameter identification method is low in identification precision, poor in adaptability to extreme working conditions and low in consistency of multiple identification results are effectively solved.

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.

A high power (HP) generator includes a plurality of low power (LP) generators, a coupling in which the LP generators are electrically connected, and a control unit. During operation, a coupling-value at an output of the coupling is higher than an LP-generator-value at an output of one of the LP generators. The control unit is configured to select a contribution of each LP generator in order to generate a rise and / or a decay of a pulse at the output of the coupling. At least one LP generator includes an LP-generator-value limiting circuit. The LP-generator-value limiting circuit includes at least one of (i) a series circuit of a diode and a capacitor configured to clamp an overvoltage present at ends thereof, and a discharge circuit to discharge the capacitor, or (ii) a resistor and a switching element, or (iii) a variable electrically controllable impedance with a power dissipating part.

The utility model discloses a generator frequency converter module, and relates to the technical field of motor frequency converters. The frequency converter comprises a frequency converter body and a shell installed outside the frequency converter body. The bottom of the housing is provided with supporting legs which are in spacing plugging cooperation with four corners of a terminal box at the top of the permanent magnet synchronous generator, and the upper part of the support is provided with a baffle plate which is used for abutting against a top cover of the terminal box after the support is plugged so as to realize spacing. According to the utility model, the generator frequency converter module and the permanent magnet synchronous generator which are originally arranged at intervals in a scattered manner are combined to form a detachable whole, thereby greatly shortening the wiring distance, facilitating the installation and disassembly, and reducing the occupied space; due to the design of the heat dissipation air outlet groove with the downward groove opening, dust adhesion is reduced, and the dustproof effect is greatly improved; and adaptability is good, practicability is excellent, and market application and popularization are facilitated.

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.

A method for controlling a power generating asset having a generator with a stator operably coupled to a transformer and a rotor operably coupled to the transformer via a power converter includes using an angle of a phase-locked loop (PLL) reference signal of a PLL at a PLL reference node of the power generating asset to transform a three-phase set of signals to a two-dimensional orthogonal coordinate system of a synchronously rotating frame. The two-dimensional orthogonal coordinate system includes x and y components of at least one of voltage and current. The method also includes determining one or more dynamic decoupling factors as a function of one or more of the x and y components of at least one of voltage and current. Further, the method includes applying the one or more dynamic decoupling factors to current command calculation logic to mitigate a coupling effect of one or more current command components.

The invention relates to a wireless power transmission-based synchronous motor excitation system for an aero-engine, which belongs to the technical field of wireless power transmission synchronous motor excitation, and comprises a power supply, an inversion module, a metal eddy current resonance compensation network, a passive rectification module and an excitation module, on one hand, a synchronous motor excitation system suitable for wireless electric energy transmission of an engine rotating part is designed and arranged in an aero-engine, power transmission from a power source to a load can be completed without physical connection, the reliability problem of friction of a contact structure is solved, and the structure is simple; on the other hand, a metal eddy current resonance compensation network is introduced into a coupling mechanism of a transmitting end coil and a receiving end coil for wireless electric energy transmission, so that the excitation system of the synchronous motor is in a resonance state, and the compensation inductance and capacitance of the aero-engine under the consideration of the metal eddy current influence can be obtained; and resonance compensation under the influence of the metal eddy current is further realized.

A variable frequency starter generator (VFSG) system includes a VFSG having a start mode and a generate mode, a permanent magnet generator (PMG) and a main generator section and an exciter section. The system also includes a controller electrically connected to the VFSG. The controller flow start mode three phase electrical power from aircraft power to the exciter of the VFSG in the start mode and flows single phase electrical power to the exciter of the VFSG in the generate mode. The controller includes: an input active rectifier that receives input AC power and converts it to DC power and provides it to across a positive rail and negative rail; an output inverter coupled to an output of the input active rectifier; and one or more line inductors connected along one or both of the positive rail and negative rail between the input active rectifier and the output inverter.

The invention discloses a brushless air-core pulse generator and supercapacitor hybrid energy storage self-excitation type pulse power supply topological structure and a control method, and relates to the field of pulse power supplies. The problems that in the prior art, a storage battery is high in energy storage density, low in power density, short in large-current cycle life, low in high-voltage charging speed and high in step-up ratio, so that a step-up converter between the storage battery and a super capacitor works in a near-saturation working condition, and the charging speed and the charging linearity are seriously affected are solved. The self-excitation pulse power supply topological structure comprises a prime motor, a brushless air-core pulse generator, a self-excitation charging rectifier bridge, a pulse capacitor bank and a load. The prime motor is coaxially connected with a rotor of the brushless hollow pulse generator; the self-excitation charging rectifier bridge is connected in series with the brushless air-core pulse generator and the pulse capacitor bank; and the brushless air core pulse generator and the pulse capacitor bank discharge to a load together in a parallel connection mode. The method is also suitable for the hybrid energy storage field based on three forms of inertia, magnetic field and electric field.

According to the generator regulator disclosed by the invention, a radiator, a fixing piece and a mounting groove in a circuit unit bracket are assembled, so that when the radiator is subjected to production line assembly, an execution device can be aligned to and grasp an assembly groove I in a radiating substrate of the radiator; an extension boss on the peripheral side of the heat dissipation substrate is aligned with a limiting groove on the peripheral side of the mounting groove in the circuit unit bracket and is assembled and inserted, so that the extension boss and the limiting groove are in interference fit; the limiting side plates on the two sides of the fixed substrate are aligned to the limiting groove positions on the peripheral side of the mounting groove and are inserted into the opening side positions of the mounting groove, the limiting side plates and the mounting groove are in interference fit, and at the moment, the pressing plate on the fixed substrate is tightly pressed on the extending boss of the heat dissipation substrate, so that the heat dissipation substrate is assembled more stably; according to the design, the assembly process of the radiator is simple, the installation process is relatively short in time consumption, the single-time assembly takt time is short, and the overall production efficiency is improved.

This disclosure describes many innovations including but not limited to systems, methods, and non-transitory computer readable media for controlling an energy generator. A system for controlling an energy generator includes a detector for sensing an indicator of electrical energy generated by the generator; an energy storage component configured, in a first mode of operation, to store energy generated during operation at a sub-threshold level insufficient for real-time supply to an electrical energy sink; an energy converter configured, in a second mode of operation, to provide energy generated during operation above the threshold level for real-time supply of energy to the electrical energy sink; and a controllable switch, electrically associated with the detector, and configured to alternately toggle between the first mode of operation and the second mode of operation based on the indicator to thereby permit energy generated at the sub-threshold level to be collected and intermittently used.

Systems, method, and computer readable medium are provided for producing a DC output, comprising: a turbine for generating a variable AC from a variable flow; a rectifier for converting the variable AC to a variable first DC; a first DC-DC associated with a storage component; a second DC-DC associated with an inverter; a dual mode circuit for alternately toggling between the first DC-DC and the second DC-DC; and a controller for: operating the circuit to store the first DC in the storage component when the first DC is below a target level, and release energy at the target level using the first DC-DC when the energy reaches the target level; operating the circuit to convert the variable DC to the target level using the second DC-DC when the variable DC is above the target level; and output a target level DC including the released energy or the second DC.

Systems, method, and computer readable medium are provided for a controller for a generator. The system includes a rectifier for converting a first AC signal generated by the generator to a first DC signal; a first DC-DC associated with energy storage and a first mode; a second DC-DC associated with an inverter and a second mode; a switch for alternately toggling between the first DC-DC and the second DC-DC, wherein the first mode prevents output to the electrical grid, and the second mode enables inversion of the second DC signal to a second AC signal via the inverter; and a processor that uses the indicator to operate the switch to operate the generator in the first mode when a connection to the grid does not conform with a parameter, and operate the generator in the second mode when the connection to the grid conforms with the parameter.

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 discloses a wind generating set for hydrogen production, a hydrogen production system, a control method of the hydrogen production system and a controller, and relates to the field of wind power generation. The wind generating set for hydrogen production comprises a generator; the hydrogen production power supply comprises a rectifier and a direct current chopper which are electrically connected, the input of the rectifier is electrically connected with the output of the generator, and the output of the direct current chopper is configured to be electrically connected with hydrogen production equipment; the direct-current energy storage module comprises a direct-current converter and a battery unit which are electrically connected, and the direct-current converter is electrically connected with the direct-current bus between the rectifier and the direct-current chopper; and the standby power module is electrically connected with the output of the generator and is used for generating electric energy to charge the direct-current energy storage module through the rectifier under the condition that the electric energy stored by the direct-current energy storage module is not enough to start the wind generating set for hydrogen production. According to the embodiment of the invention, the electric energy loss of the wind generating set for hydrogen production can be reduced, and the electric energy transmission efficiency is improved.