19results about How to "Avoid Voltage Fluctuations" patented technology

The utility model discloses a switch direct-current power supply with a filtering anti-burning circuit, which mainly solves the problem that the existing switch power supply is easy to short-circuit and cannot be used normally. The switch direct-current power supply comprises a full-bridge rectifier D connected in series with the input end of an alternating-current power supply, a power-on protection circuit connected with the input end of the alternating-current power supply, a surge protection circuit connected with the full-bridge rectifier D, a filtering anti-burning circuit connected with the surge protection circuit, and a short-circuit protection circuit connected with the filtering anti-burning circuit, and the direct-current output end is connected with the short-circuit protection circuit. Through the above design, the switch DC power supply effectively solves various unstable factors, such as voltage fluctuation, short circuit and surge, possibly encountered by a traditional DC power supply in a complex line and a severe environment through the accurately designed circuit assembly, thereby substantially improving the operation stability and safety of electronic equipment.

The application provides a DC bus stable control method and system for bilateral power grid coupling, and relates to the technical field of power grid control. The method comprises the following steps: collecting real-time data of the bilateral power grid to obtain a plurality of power grid information, including voltage information and power information; performing phase-locked loop processing to generate power grid phase parameters, performing coupling interaction analysis, and constructing a DC bus voltage control model; performing inner and outer loop control to generate bilateral power reference values, performing regulation and control analysis on the bilateral power grid to generate initial regulation and control signals; performing bidirectional regulation, performing incremental learning, generating bilateral power reference optimization values, dynamically correcting the initial regulation and control signals, and constructing a power grid control scheme. The application solves the technical problem that the prior art mostly uses fixed reference values for DC bus control, fails to dynamically adjust according to the actual operation state of the power grid, and reduces the regulation accuracy of the power grid, thereby affecting stability and reliability.

The utility model provides an intelligent robot emergency stop circuit, including power supply, emergency stop trigger source module is used for triggering emergency stop signal, emergency stop trigger source module includes at least one emergency stop button and at least one anti -collision strip sensor interface, and emergency stop button, anti -collision strip sensor interface are connected with power supply, a plurality of signal processing modules, and each signal processing module includes first photoelectric coupler, and the input of first photoelectric coupler is connected with emergency stop button or anti -collision strip sensor interface, and the output is connected with MCU, self -locking control module respectively, self -locking control module includes self -locking circuit, and the input of self -locking circuit is connected with a plurality of signal processing modules respectively, and the output is connected with motor control module, and motor control module is used for receiving the emergency stop signal of handled and control motor stop movement, the utility model has realized the effective integration to multiple emergency stop signal source, and its self -locking function can maintain the emergency stop state automatically after triggering.

This utility model relates to the field of electric vehicle instruments, specifically to an intelligent digital instrument circuit for electric vehicles, including a power conversion module and a backlight module. The power conversion module includes a conversion chip. The positive terminal of the power supply is connected to the conversion chip after passing through a first filter circuit. The conversion chip outputs a first voltage after passing through a voltage regulation circuit and a second filter circuit. The output terminal of the second filter circuit is also connected to a voltage divider circuit. The output terminal of the voltage divider circuit outputs a second voltage after passing through a third filter circuit. The power conversion module is used to step down the voltage and output power to the main chip and driver chip. The voltage regulation circuit is used to adjust the voltage and outputs the first voltage after stabilization by the second filter circuit. The output terminal of the second filter circuit is connected to a voltage divider circuit, which further divides and reduces the voltage before outputting the second voltage. That is, the circuit of this application can output a first voltage and a second voltage with different voltage values, thereby reducing energy loss and extending battery life.

This invention discloses a method for regulating and controlling a gas-fired range extender power generation system and a SOFC power generation system based on load changes. This method is applied to a collaborative power supply system comprising an SOFC fuel cell, a gas-fired range extender power generation system, an energy storage battery, and an EMS control unit. The method collects load power data using a multi-function meter and calculates the predicted power demand based on a sliding window weighted prediction model. By comparing the energy storage battery's state of charge value with multi-level thresholds and the relationship between the predicted power demand and the SOFC's rated power, three operating modes are determined: independent SOFC power supply, collaborative power supply, and emergency charging. A power request command is sent to the gas-fired range extender power generation system via CAN communication. The range extender selects the optimal efficiency operating point within the high-efficiency operating range of the universal characteristic graph to perform variable-speed power generation, achieving power-following closed-loop control. Mode-smooth switching is achieved through continuous cyclic adjustment and preset stability judgment conditions. This invention solves the problems of high gas consumption and slow passive response in power regulation during fixed-speed operation of traditional generator sets.

The application relates to the technical field of voltage compensation control, in particular to a power distribution line dynamic compensation adjustment method for preventing voltage fluctuation. The method comprises the following steps: acquiring voltage deviation degrees and reactive power variation synchronization degrees between each trunk node and each compensation point at each moment; acquiring limit coefficients of each trunk node, and dividing an alternating current power grid area into reactive power compensation coverage sub-areas dominated by each compensation point; calculating line losses of trunk lines in each reactive power compensation coverage sub-area, and acquiring multi-time scale estimation information; acquiring compensation parameters of reactive power compensation devices in each reactive power compensation coverage sub-area, and then correcting compensation capacities of the reactive power compensation devices to dynamically compensate the power distribution line. The application aims to reduce active power loss and voltage drop and improve overall power quality.

The application relates to the technical field of micro-grid energy management, and discloses a micro-grid dynamic coordination control method for distributed energy. The method acquires a data set of multiple monitoring nodes of a micro-grid in a historical operation interval; performs multi-resolution fluctuation analysis on an energy output data set, an energy demand data set and a system frequency data set to generate an output fluctuation index, a demand fluctuation index and a frequency fluctuation index; takes the fluctuation index as a guide variable, adopts a group optimization algorithm to explore in a micro-grid control parameter space, and locates an optimal control interval; periodically adjusts distributed power generation units and load units in the micro-grid according to the optimal control interval, generates a regulation and control instruction set and executes the regulation and control instruction set to achieve dynamic coordination control. The application realizes accurate interval positioning and efficient coordinated operation of micro-grid control, and effectively improves the stability and regulation and control efficiency of a distributed energy system.

The application discloses a hydrogen exhaust and water exhaust valve control method based on hydrogen fuel cell inspection statistical data, and comprises the following steps: collecting the working voltage of a hydrogen fuel cell stack through a CVM inspection controller, and transmitting the working voltage to an FCCU controller through a channel; the FCCU controller calculates the range and variance of a single piece of the stack according to the working voltage of the stack; and the opening and closing state of the hydrogen exhaust and water exhaust valve is controlled according to the range and variance of the single piece of the stack. The application has the beneficial effects of preventing the voltage fluctuation, efficiency reduction and single piece of battery damage caused by the water accumulation of the stack.

This application provides a hybrid electric vehicle, a dual-motor controller, and a control method thereof. The control method first determines whether the first drive circuit connected to the generator's power connection terminal is operating in a voltage closed-loop control mode. When the first drive circuit is operating in voltage closed-loop control mode, it indicates a fault in the high-voltage power battery and that the contactor connected to the DC bus is disconnected. At this time, based on the hybrid electric vehicle's limp-drive mode, and with the goal of stabilizing the DC bus voltage, the operating mode or power limit of the second drive circuit is determined. That is, through the coordinated control of the first and second drive circuits, the voltage on the DC bus is maintained stably, avoiding the DC bus voltage fluctuation problem that easily occurs when relying solely on the first drive circuit to control the DC bus voltage.

The invention discloses a voltage control circuit and system of a bipolar electrostatic chuck. The voltage control circuit comprises a reference circuit, a voltage output circuit, a positive sampling adjustment circuit, a negative sampling adjustment circuit and a selection control circuit, and the positive sampling adjustment circuit samples a positive output voltage to generate a first sampling voltage and generates a first adjustment signal when the sum of the first sampling voltage and the reference voltage is not equal to zero. The negative sampling adjustment circuit samples the negative output voltage to generate a second sampling voltage, and generates a second adjustment signal when the sum of the second sampling voltage and the reference voltage is not equal to zero. The selection control circuit selects the first adjustment signal and the second adjustment signal to output a target adjustment signal, so that the voltage output circuit adjusts the positive output voltage or the negative output voltage based on the target adjustment signal. According to the voltage control circuit, through closed-loop control of sampling, comparison and adjustment, the stability of the output voltage is improved, and therefore the adsorption effect of the bipolar electrostatic chuck is improved.

The present application belongs to the technical field of energy station regulation and control, and specifically discloses an energy station control system, method, device and medium. A hierarchical control module is used to obtain environment data and user instructions of each energy station, and generate an intelligent control scheme according to the environment data and user instructions; a communication module is used to obtain energy station data and the intelligent control scheme, and optimize the intelligent control scheme according to the energy station data, and then issue the optimized intelligent control scheme to each energy station; and a voltage stabilization module is used to obtain a voltage stability index and the intelligent control scheme, thereby controlling the voltage of each bidirectional converter. The hierarchical control module is used to optimize user instructions to generate an intelligent control scheme, and the communication module is used to optimize the intelligent control scheme again, so as to adapt to a multi-energy flow coupling environment, efficiently process complex data from different sources, and effectively improve the operation efficiency of the energy system. The voltage fluctuation caused by the hierarchical control module is effectively solved by setting the voltage stabilization module.

The invention belongs to the technical field of power supply dispatching, and particularly relates to an intelligent regulation and control method for UPS centralized power supply for an underground alternating current charging pile, which comprises the following steps: acquiring vehicle charge state and travel end point information, and calculating theoretical residual electric quantity; candidate charging parking spaces are screened along the driving path, the UPS releasable power and the load rate are obtained, and environment data, the bus voltage distortion rate and the load level are collected; calculating the charging duration and the charging quantity, screening the charging piles which meet the constraint conditions and are safe in environment, and determining a target charging pile; performing charging power prediction in combination with the input power of a vehicle charger, determining an inversion module scheduling strategy and bus parameters according to the available capacity and redundancy capacity of the UPS, and forming a pre-scheduling scheme; when the vehicle approaches, the inversion module is started, parallel operation synchronization is completed, and a pre-output power supply state is formed; after the vehicle is connected, BMS feedback is obtained and matched with the preset scheme for judgment, charging is executed when conditions are met, otherwise, the charging is executed after adjustment, and therefore the power supply stability and the charging efficiency are improved.

The application discloses a kind of port low voltage ride through control system and method.The application includes photovoltaic module carries out photoelectric conversion, is carried out three-phase interleaved boost by voltage conversion module, energy storage control module stores energy, by grid module detects grid fluctuation degree, when voltage fluctuation degree reaches first fluctuation threshold or when the time length reaching second fluctuation threshold exceeds timing time, energy storage control module discharges and by voltage conversion module carries out inverter frequency conversion, for the power supply of connected port load, according to the voltage size of the electric energy output by photovoltaic module and first voltage threshold, second voltage threshold and third voltage threshold, the electric energy superposition degree of control output conversion module.The application can carry out electric energy compensation processing to grid module, avoid voltage fluctuation of grid module, realize uninterrupted power supply, according to photoelectric state, carry out branch power supply, improve electric energy utilization.

The application relates to the technical field of automobile body electronic control, in particular to a body domain control dynamic power consumption scheduling method and device, a vehicle and a medium, the method comprising the following steps: acquiring context perception information, user individualization information and vehicle energy information of a current vehicle, and identifying a current running scene according to the context perception information; determining a load priority ranking result in the current running scene based on the current running scene and the user individualization information; calculating a total power consumption quota that can be allocated to the body domain according to the vehicle energy information, and allocating a corresponding power consumption quota to each load based on the load priority ranking result and the total power consumption quota. Therefore, the problems of rigid body domain power consumption scheduling strategy, lack of scene perception, fixed priority and inability to optimize in related technologies are solved, dynamic, intelligent and individualized scheduling of body domain power consumption is realized, the body power consumption is maximally reduced on the premise of guaranteeing the driving and riding experience, and the cruising range of a new energy vehicle is improved.

The invention relates to an optical storage all-in-one machine technology, and discloses an optical storage all-in-one machine control method and an optical storage all-in-one machine, through arranging a grounding relay, opening and closing of the grounding relay are controlled according to a power grid side state, a grounding mode can be flexibly adjusted, faults of equipment and a power grid are effectively isolated, the risk of equipment damage is reduced, and the safety of a system is enhanced. Meanwhile, the four contactors are arranged as the power grid contactors, so that the N line can be disconnected by using the contactors as required, and the method is safer and more reliable compared with the method of directly using a thyristor to control the on-off of the N line; and the thyristor and the power grid contactor are simultaneously arranged on one side, connected to the power grid, of the grid-connected and off-grid circuit, so that the switching speed of the thyristor is relatively high when grid-connected switching to off-grid switching is needed, and the system can be rapidly switched to off-grid power supply through the thyristor when the power grid is suddenly powered off, thereby avoiding load power failure caused by relatively low switching speed of the contactor. The invention aims to improve the electrical safety and the system stability in the use process of the optical storage all-in-one machine.

This invention discloses a zoned control method and system applicable to LLC resonant converters with a wide operating range. The method determines the operating range of the converter by real-time acquisition and analysis of the converter's operating state parameters and adaptively selects a matching control strategy. The operating range includes a loss reduction control state, a steady-state regulation control state, and a voltage equalization enhancement control state. In the loss reduction control state, an intermittent resonant excitation mechanism is introduced to reduce the equivalent switching frequency; in the steady-state regulation control state, continuous modulation is used to achieve stable output voltage regulation; in the voltage equalization enhancement control state, voltage equalization control is superimposed on steady-state regulation. This invention can balance system efficiency, output stability, and operational reliability over a wide load range, and has good engineering application value.

This invention provides a multi-source collaborative emergency power supply scheduling optimization method for coal mines based on supercapacitors, belonging to the field of coal mine safe power supply technology. The method includes acquiring real-time operating parameters of the power supply system to construct a node state feature matrix, decomposing and extracting dynamic features to construct a node priority system, generating power supply path scores and performing global optimization, determining equipment switching strategies and synchronous switching methods, and establishing a supercapacitor transitional power supply mechanism. This invention achieves rapid and reliable switching of coal mine power supply systems, ensures power supply continuity, and improves emergency response capabilities.

The application belongs to the field of ocean monitoring equipment energy supply and buoy adaptation working condition, and discloses a self-powered buoy based on fluid-induced vibration fluid kinetic energy capture and a working method. The buoy cooperates with the depth of the energy supply system and the float-sink system: on the one hand, the flow-induced vibration technology is deeply integrated with the buoy, the circumferential uniform arrangement of the cylindrical vibrator responds to the sea current in different directions, the vortex shedding effect is used when the sea current flows through the vibrator to drive the deformation of the piezoelectric sheet, the mechanical energy is converted into electrical energy, no additional driving device is needed and the starting flow rate is low, and the problem of single vibrator direction limitation is solved; on the other hand, the float-sink regulation system dynamically adjusts the draft depth based on sensor monitoring data, and realizes intelligent switching of the working state and the charging state. The application has strong sea condition adaptability and low maintenance cost, can ensure long-term stable energy supply and reliable monitoring of the buoy, and effectively overcomes the defects of insufficient energy supply of the traditional buoy, disconnection of the float-sink and energy supply system and limited energy capture direction.

The application discloses a kind of photovoltaic power plant distributed energy collaborative control method and device, it is related to intelligent power grid control technical field.This kind of photovoltaic power plant distributed energy collaborative control method and device, comprising: S1, collection inverter working data, and pre-processing is executed to inverter working data, obtain the inverter working data after pre-processing;S2, construct the inverter set to be classified, extract reference sample, assess the risk of withdrawal from network, output the withdrawal state label of inverter to be classified;S3, identify power intervention candidate area, extract inverter that has not withdrawn from network and construct power compensation resource set, screen out power regulation target, and assess the regulation priority of power regulation target;S4, calculate the power regulation step of power regulation target, carry out power adjustment, adjust after constructing feeder regulation database, realize the closed-loop adaptive optimization of power control.The problem that inverter withdrawal failure misjudgment caused by feeder end voltage drop anomaly not being identified is solved.