1059 results about "Hydrogen technologies" patented technology

The invention discloses a DC bus voltage fluctuation suppression method of a renewable energy hydrogen production system, and relates to the technical field of renewable energy electrolysis hydrogen production. The method comprises the following steps: collecting system operation parameters in real time; bus voltage disturbance power is estimated based on a disturbance observer, and frequency decomposition is carried out; fusing the ARIMA model and the LSTM model to predict the load power, and calculating a prediction deviation; dynamically setting upper and lower limits of a bus voltage control interval according to the predicted deviation and the operation state; a multi-objective optimization function is constructed, bus voltage disturbance power, prediction deviation and a control limit value are comprehensively considered, and power regulation instructions of battery energy storage, a fuel cell and an electrolytic cell are solved; and executing power regulation control to realize bus voltage stabilization. The method can improve the grading response capability of voltage disturbance, the prediction accuracy of load power change, the adaptability of the control boundary and the overall operation stability of the system, and is suitable for the electric energy quality control of the hydrogen production system in a multi-source fluctuation scene.

The invention relates to the technical field of electrolytic hydrogen production, and discloses a PEM electrolytic cell energy-economy collaborative optimization method based on digital twinning, which comprises the following steps: S1, calibrating parameters of a membrane electrode mathematical model by using a standard test for a single cell of a PEM electrolytic cell, and establishing a high-precision physical simulation model; s2, constructing a high-precision digital twin system based on the high-precision physical simulation model; s3, inputting multi-dimensional data of electricity price fluctuation, hydrogen demand prediction and equipment state, and performing collaborative optimization analysis through an optimization decision algorithm; s4, forming a PEM electrolytic cell control optimization instruction; and S5, the physical entity PEM electrolytic bath executes the instruction. According to the method, the'electricity price-demand-equipment 'dynamic relation is planned as a whole from the global perspective, the process steps cover data-driven modeling, multi-target decision, digital twinning cooperation and closed-loop feedback, balance needs to be achieved among algorithm efficiency, model precision and engineering feasibility, and energy-economy-life multi-target cooperation is achieved.

The invention provides a novel adjustable partition type alkaline electrolytic cell technology and a matched electrolysis cell structure, and belongs to the technical field of alkaline water electrolysis hydrogen production. According to the technology, a flow channel of an alkaline water electrolysis device is changed to be four-in and four-out and is divided into four areas, and the flow of each area is independently adjusted; a hydrogen molecule detector is arranged on the gas outlet side, the opening degree of a liquid inlet adjusting valve is controlled according to a detection result, dynamic adjustment is achieved, and flow balance is guaranteed; the small electrolysis chamber comprises a pole frame, a pole plate, a diaphragm and an electrode net, the pole frame is in four-partition design, and a vertical partition plate is added to enhance the rigidity; the pole plate is divided into three phases and the mastoid structure is optimized; the diaphragm is designed in a split manner; the electrode net is optimized according to the polar plate. The process and the structure are optimized, the electrolysis efficiency is improved, the structural safety is enhanced, the energy consumption is reduced, and good application prospects are achieved in the field of hydrogen production through alkaline electrolysis of water.

The invention relates to the technical field of hydrogen storage, in particular to a hydrogen storage tank hydrogen absorption and desorption simulation analysis method based on a JMAK model, and is mainly used for optimizing evaluation and improvement of performance of a hydrogen storage tank in the hydrogen adsorption and release process. Compared with a traditional simulation method, the method has the advantages that the physical model of the hydrogen storage tank is constructed, thermodynamic and dynamic characteristics in the hydrogen absorption and desorption process are combined, particularly, a PCT result curve obtained through a PCT performance test of a hydrogen storage material is utilized, a JMAK model is combined, and experimental data are subjected to fitting processing through origin drawing software; and on the basis of data measured by an experiment, a COMSOL simulation software is used for carrying out detailed modeling and analysis on the absorption and release process of the hydrogen, so that the simulation precision of the hydrogen storage and release process is optimized, and the dynamic behavior and thermodynamic behavior of the hydrogen in the hydrogen storage tank are captured. According to the invention, accurate simulation of key factors such as hydrogen absorption and release rate, temperature distribution, pressure change and the like in the hydrogen storage tank can be realized.

The invention provides a fault diagnosis method and system for a water electrolysis hydrogen production system based on a graph neural network, and belongs to the technical field of water electrolysis hydrogen production, and the method comprises the steps: obtaining key operation parameters of the water electrolysis hydrogen production system; constructing a time-varying dynamic adjacency matrix based on the key operation parameters, wherein the time-varying dynamic adjacency matrix is obtained by weighting and fusing physical topological structure data and multivariate time sequence data through arbitration parameters; inputting the multivariate time sequence data into a time feature extraction module, and extracting time dependent features; inputting the dynamic adjacency matrix into spatial feature extraction module spatial dependency features based on the time dependency features; fusing the time dependency feature and the spatial dependency feature by adopting a time-space gating fusion mechanism to obtain a fused spatial-temporal feature; and a fault classification module is adopted to identify whether the water electrolysis hydrogen production system has a fault and a fault type based on the fusion features. The diagnosis method is high in accuracy and fast in response.

The invention relates to the technical field of PSA (Pressure Swing Adsorption) hydrogen extraction, in particular to a hydrogen purification process based on a PSA device, which comprises the following steps: raw material gas is firstly decompressed and enters the PSA device, a product hydrogen after impurity removal is sent to the outside, desorbed gas of the PSA device is pressurized by a desorbed gas compressor and is sent to a first-section shift converter, the raw material gas enters an adsorption tower in an adsorption state, and the desorbed gas enters a second-section shift converter; under the action of a special adsorbent, CO, N2, CH4O, CH4, AR and other components in the raw material gas are adsorbed, and high-purity H2 flows out of the tower top, is subjected to pressure stabilization metering through a regulating valve and then is sent out. According to the hydrogen purification process based on the PSA device, residual impurities can be deeply removed by using two-stage pressure swing adsorption, additionally arranging a two-stage adsorption tower and performing post-treatment detection on hydrogen, the impurity content required by high-purity hydrogen needs to be controlled at a ppm level, the purity of the hydrogen can stably rise to 99.99% or even higher through two-stage PSA, and the purity of the hydrogen is greatly improved. The use standard of ultra-high-purity hydrogen in the production of semiconductors and photovoltaic cells is met, and the process stability and the yield of products are guaranteed.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses a method and system for evaluating the operation performance of an alkaline water electrolysis hydrogen production device, and the method comprises the steps: 1, deploying a distributed sensor network, collecting the operation data of an electrolytic cell, building a multi-physical field coupling model, and calibrating a model parameter matrix; and step 2, constructing an electrode damage evolution model based on the model parameter matrix, processing acoustic emission signals acquired by the sensor network, extracting crack characteristic parameters, calculating real-time damage degree, and generating graded early warning signals. According to the technical scheme, the distributed sensor network is adopted to collect the multi-physical field data, and the coupling model is established to calibrate the parameter matrix, so that the technical effect of a multi-dimensional parameter dynamic coupling relation is achieved; the defects of large energy efficiency evaluation deviation and low reliability caused by neglecting of multi-field interaction in a traditional method are overcome.

The invention belongs to the technical field of solid hydrogen storage, and provides a solid alloy hydrogen storage device with high heat transfer performance and application thereof, and is characterized in that the device comprises a hydrogen storage container, a hydrogen storage alloy and a heat exchange structure assembly; a fin structure and a layering partition plate are arranged in the hydrogen storage container, by optimizing the layering partition plate and the fin structure, displacement and agglomeration of hydrogen storage alloy in a moving or vibrating environment are effectively prevented, the mass transfer and heat transfer performance in the hydrogen storage tank is remarkably improved, hydrogen and heat can be rapidly transferred to the hydrogen storage alloy, and the hydrogen storage effect is improved. Therefore, the hydrogen absorption and desorption efficiency is improved. The method is suitable for AB2 type alloys, AB5 type alloys, BCC type alloys, superlattice hydrogen storage alloys and the like, the hydrogen absorption and desorption process can be efficiently completed at a certain temperature and pressure, and the high efficiency and stability of the hydrogen absorption and desorption process are ensured. And the catalyst can be widely applied to various scenes such as traffic, hydrogen refueling stations, industrial processes and hydrogen energy storage.

The invention belongs to the technical field of ocean engineering and water electrolysis hydrogen production. In order to solve the problems that a traditional water cooling system is large in size and low in heat dissipation efficiency, a multi-scale thermal sensing network is deployed to collect data; establishing a multi-phase-change cross-scale heat transfer model; constructing a two-stage gradient composite cooling module; constructing and optimizing a cooling decision algorithm; designing a cooperative control loop; deep reinforcement learning control is implemented; creating a functional surface; and constructing a dynamic optimization system. The characteristics of part of the steps are limited, efficient heat management can be achieved, and stable operation of the floating type offshore hydrogen production platform cooling system is guaranteed.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to a closed modular electrolytic cell for water electrolysis hydrogen production, which comprises an electrolytic hydrogen production cell, a partition structure, an electrolysis module and a second lifting structure, the electrolytic hydrogen production tank comprises a tank body and a cover body; the partition structure comprises an ion diaphragm, and the ion diaphragm divides the internal space of the tank body into a cathode chamber and an anode chamber; the electrolysis module comprises a hoisting plate, an electrolysis piece assembly, a plurality of clamping structures and a first lifting structure, the lower end of the hoisting plate abuts against the upper end of the ion diaphragm, the electrolysis piece assembly comprises a plurality of cathode pieces and a plurality of anode pieces, the clamping structures are arranged on the hoisting plate, and the first lifting structure is arranged between the cathode pieces and the anode pieces. The clamping structure clamps the cathode plate and the anode plate on the hoisting plate, and the first lifting structure is used for changing the height of the hoisting plate in the tank body; the second lifting structure is used for opening and closing the tank body and the cover body; according to the invention, the hoisting plate, the electrolytic sheet assembly, the clamping structure and the first lifting structure are arranged, so that the electrolysis efficiency is maintained.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses a water quality control method and device, electronic equipment, a medium and a water electrolysis hydrogen production system.According to the scheme, dynamic data of the water electrolysis hydrogen production system are input into a prediction model, and the prediction model determines the conductivity of water according to the change rule of the conductivity of water along with dynamic influence factors; the change trend of the conductivity of the water in the water storage unit is predicted, and the path switching threshold value is determined based on the predicted change trend of the conductivity, so that the path switching threshold value is dynamically adjusted, and the change of the conductivity caused by power supply fluctuation, temperature change and the like of the PEM electrolytic cell can be coped with; and the switching frequency of the waterway switching unit is reduced while the standard-reaching rate of the water quality is improved. Moreover, the prediction model is obtained through training based on the output constraint condition, the condition that the conductivity of water in the water storage unit meets the preset water quality requirement and the switching frequency of the waterway switching unit is minimized, higher robustness is achieved for complex working conditions, and the accuracy of the conductivity change trend prediction result is improved.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses an electrolytic bath outlet temperature control method and system, a medium and a program product, a flow control valve is arranged at an inlet of an electrolytic bath, the electrolyte input flow is converted into a core regulation variable directly influencing the outlet temperature, and active control over the outlet temperature is achieved. Furthermore, the flow control valve is directly connected with the control device, the opening degree signal can be received in real time, the flow can be adjusted, it is ensured that the temperature control instruction can be rapidly converted into the actual flow change, and the response speed to power fluctuation is increased. Furthermore, through a real-time operation state parameter set and a real-time temperature monitoring parameter set, it is ensured that a control signal is generated based on a real working condition, and the temperature control stability under fluctuating power is improved. Furthermore, through the synergistic effect of an electrolyte flow feedforward control signal and an electrolyte flow rear-end control signal, frequent current change caused by wind-solar power fluctuation can be effectively handled, and the fluctuation amplitude of the outlet temperature is reduced.

The invention belongs to the technical field of ocean engineering and water electrolysis hydrogen production. In order to solve the problem that a traditional model is difficult to deal with dynamic sea conditions, a platform-environment coupling digital twin model is constructed, multi-source monitoring data is fused, and platform motion response is predicted through deep reinforcement learning. And generating anti-storm strategies such as ballast water regulation based on a prediction result, and realizing real-time optimization. According to the method, the evaluation accuracy is improved by 25%, and the strategy response time is lt; under the conditions of 8-level wind and 1.2 m wave height, the motion amplitude of the platform is reduced by 28%, the shutdown frequency of a hydrogen production system is reduced by 75%, and operation and maintenance of the floating platform are promoted to be upgraded to intelligent.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to a self-supporting hollow carbon membrane electrode and a preparation method and application thereof.The preparation method comprises the following steps that a self-supporting hollow carbon nanofiber membrane with metal M and metal M compound heterojunction is prepared through a coaxial electrostatic spinning technology; the self-supporting electrode with a high specific surface area and a rapid mass transfer channel is formed by regulating and controlling the flow rate of the spinning solution of the outer layer and the inner layer and a high-temperature carbonization process, the metal M is selected from one of iron, cobalt, nickel, manganese and molybdenum, and the metal M compound is one of oxide, hydroxide, carbide, nitride, phosphide and chalcogenide. Compared with the prior art, the self-supporting hollow carbon membrane electrode disclosed by the invention has good mechanical stability, good hydrophilic and hydrophobic properties and excellent HER and OER bifunctional catalytic activity, and can be used for efficiently and completely decomposing water.

The invention relates to a water electrolysis hydrogen production technology, and aims to provide a super-hydrophilic nickel-based electrode with a two-stage array structure and a preparation method of the super-hydrophilic nickel-based electrode. According to the nickel-based electrode, a three-dimensional net-shaped nickel felt made of micron-sized pure nickel fibers serves as a base material, and micron-sized second-stage array structures are periodically arranged on the first-stage surface of the nickel felt; the secondary array structure is any one or two of a ridge-shaped array or a square column array formed on the surface of the nickel felt by using a femtosecond laser etching process. The preparation method of the electrode is simple in preparation step, has super-hydrophilic and super-aerophobic characteristics, is excellent in electrochemical performance and low in cost, and is very suitable for industrial production and application; a femtosecond laser one-step method is used for processing, subsequent treatment is not needed, and the method is simple, easy to operate and suitable for being amplified to an industrial production scale; the surface wettability of the electrode is greatly enhanced, the hydrophilic and aerophobic properties are excellent, and water transmission and bubble desorption in the electrolysis process are facilitated.

The present invention discloses a Ni‑Se‑C hydrogen evolution electrode and a preparation method thereof, belonging to the technical field of electrocatalytic hydrogen evolution. The Ni‑Se‑C hydrogen evolution electrode is composed of a conductive substrate and a Ni‑Se‑C coating electroplated on the surface of the conductive substrate. First, the conductive substrate is pretreated in the present invention; then, Ni, Se, and C elements are deposited on the pretreated conductive substrate by electroplating to form a Ni‑Se‑C hydrogen evolution electrode with excellent hydrogen evolution performance. The synthesis method of the present invention is simple and the catalytic layer structure is stable. The synthesized Ni‑Se‑C hydrogen evolution electrode can be widely applied to the industrial production of hydrogen by electrolyzing water, and has significant practical value and economic value.

The invention relates to the technical field of hydrogenation, and discloses a hydrogenation system and method suitable for small solid hydrogen storage, and the hydrogenation system comprises an emergency cut-off system, a scram button, an emergency switch-off system and a control system, the emergency cut-off valve is electrically connected with the emergency stop button and the PLC control system and is used for cutting off a hydrogen passage when an abnormality occurs; and the PLC control system is electrically connected with the emergency cut-off system, is electrically connected with the hydrogen leakage and flame detection system and the process equipment system, and is used for receiving signals and controlling the operation of each module. According to the invention, hydrogenation is carried out on a large batch of small solid hydrogen storage tanks in the form of a hydrogenation tank changing machine. The machine is connected with the solid hydrogen storage tank in a quick-plug connector mode, when hydrogenation is needed, the empty tank only needs to be inserted into equipment, plug-and-play is achieved, and the empty tank is pulled out after being filled up. The problem of filling efficiency of a large batch of solid hydrogen storage tanks can be solved, the service efficiency of a hydrogen refueling station is improved, the requirements for the working conditions and the number of operators are not high, human intervention is little, and the automation degree is higher.

The invention belongs to the technical field of functional sugar alcohol hydrogenation, and particularly relates to a system and a method for intelligently controlling a reaction kettle in a functional sugar alcohol hydrogenation process. Comprising a temperature sensor TT, a pressure sensor PT, a liquid level sensor LT, a hydrogen concentration sensor TZT and a spectrum sensor, and the sensor networks are arranged on a reaction kettle body, a feeding pipeline, a condenser and a hydrogen recovery device. The device is used for collecting temperature, pressure, liquid level and hydrogen concentration in the reaction kettle and spectral data of an outlet sugar alcohol product in real time. The control execution layer comprises a PLC (Programmable Logic Controller), a dynamic valve controller, temperature control equipment and a stirrer speed regulation module; and the dynamic valve controller is connected to the hydrogen supply pipeline and the feeding pump. The hydrogen flow, the temperature and the stirring speed are adjusted in real time through AI dynamic optimization, the sugar alcohol conversion rate is increased to 5%, and the conversion rate fluctuation range is reduced to + / -0.5%.

The invention relates to the technical field of new energy hydrogen production, and discloses a method for measuring and calculating new energy consumption in a hydrogen production process by combining real-time data. The method comprises the steps that hydrogen production system operation parameters and new energy power generation data are obtained, the hydrogen production system operation parameters comprise an electrolytic cell voltage fluctuation curve and a hydrogen purity detection value, and the new energy power generation data comprise a wind power prediction deviation rate and a photovoltaic actual output curve; establishing a new energy consumption evaluation model, performing time sequence alignment on the voltage fluctuation curve of the electrolytic cell and the wind power prediction deviation rate, and generating a dynamic matching degree index set; based on the set, a multi-scale feature extraction network is called to analyze a photovoltaic actual output curve, and a fusion analysis result containing output stability and absorption potential features is obtained; and inputting a result into the absorption amount optimization model for adaptive weight distribution, outputting a new energy absorption amount measurement value containing a time dimension absorption efficiency sequence and a hydrogen production equipment response parameter, and adapting to new energy absorption evaluation and scheduling requirements in hydrogen production.

The utility model discloses an inerting and discharging combined safety protection device for a solid hydrogen storage tank, and belongs to the technical field of hydrogen storage and supply. The device comprises a solid hydrogen storage tank main body, a pressure and temperature sensing module, an inert gas injection system, a flameless relief device and a hydrogen treatment unit, the pressure and temperature sensing module monitors parameters in the tank in real time, when the parameters exceed a preset threshold value, the inert gas injection system injects inert gas from the lower portion of the tank body at constant pressure, the air pressure is stabilized through flow control, and meanwhile hydrogen is pumped out of an opening in the upper portion of the tank body to the processing unit; and a discharge port is formed in the side surface of the tank body and is linked with the flameless discharge device. According to the device, through the design of inerting inhibition and safe release, the potential safety hazard of overtemperature and overpressure in the solid hydrogen storage process is solved, the stability and safety of a hydrogen storage system are improved, and the device is convenient to operate and adapts to transformation of an existing solid hydrogen storage tank.

The invention belongs to the technical field of solid hydrogen storage, and particularly relates to a Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy high in volume capacity and easy to activate and a preparation method of the Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy, the specific composition of the hydrogen storage alloy is Ti < 1 > Fe < 0.9 > Mn < 0.1 > Ce < x > Zr < y >, x is any one of 0.02, 0.04 and 0.06, and y is any one of 0.02 and 0.06. By optimizing alloy components, transition elements Mn and Zr and a rare earth element Ce are added into the AB type hydrogen storage alloy TiFe, the rare earth element Ce exists in the form of an independent phase, and the transition elements Zr and Mn partially replace elements on the A side and the B side respectively, so that second phases Ce, CeO and ZrMn2 appear in a TiFe matrix, and the activation performance of the Ti-Fe-based alloy is remarkably improved.

The invention belongs to the technical field of underground hydrogen storage, and particularly relates to a method for improving underground hydrogen storage capacity by stabilizing hydrogen foam through a porous carbon material, which comprises the following steps: step 1, preparing a hydrophobic modified porous carbon material: preparing the porous carbon material by using biomass waste as a raw material through a carbonization-activation process; carrying out hydrophobic modification treatment on the porous carbon material to enable the water contact angle of the material to reach more than 90 degrees; step 2, preparing a surfactant solution; step 3, preparing a porous carbon-surfactant composite system; and fourthly, hydrogen foam is generated and injected, wherein hydrogen and the porous carbon-surfactant composite system are fully mixed according to the gas-liquid volume ratio of 1: 1-10: 1, and then the mixture is injected into the stratum. By means of the method, the stability of hydrogen foam can be remarkably improved, the hydrogen storage efficiency and the hydrogen recovery rate are improved, and therefore the underground hydrogen storage amount is greatly increased.

The invention discloses a static rectifying device for a large-diameter hydrogen-doped natural gas pipeline, and relates to the technical field of hydrogen doping of natural gas. The left end of the natural gas pipe body is a natural gas inlet and the right end is a mixed gas outlet; the hydrogen injection pipe is a bent pipe, is of an inverted-L-shaped leftward-bent structure and extends into the natural gas pipe body, the part is coaxial with the natural gas pipe body, and three rows of hydrogen injection holes are distributed in the circumference of the tail end of the hydrogen injection pipe, so that hydrogen is injected into the natural gas pipe body more sufficiently and is pre-mixed with natural gas. Mixed gas is continuously divided, shunted, collided and overlapped through the mandrel, the turbulent flow blades and the turbulent flow rods in the turbulent flow pipe, and the mixing uniformity of natural gas and hydrogen is enhanced. Compared with the prior art, the problem that a traditional SK type mixer is poor in mixing uniformity can be effectively solved, and the vacancy of a large-diameter natural gas pipeline hydrogen-doped mixing device is filled up.

The invention belongs to the technical field of water electrolysis hydrogen production, and discloses a PEM electrolytic bath temperature control method based on feed-forward compensation and a related device, and the method comprises the steps: collecting the input power of an electrolytic bath and the outlet temperature of the electrolytic bath at the current moment; calculating the voltage and current of the electrolytic cell based on the outlet temperature and the input power of the electrolytic cell, and obtaining the heat production power of the electrolytic cell based on the current voltage and current of the electrolytic cell; based on the heat production power of the electrolytic cell and the outlet temperature of the electrolytic cell, constructing a mapping relation between the input power of the electrolytic cell and the outlet temperature of the electrolytic cell and the circulating water flow; and feed-forward compensation of the circulating water flow is carried out based on the mapping relation. According to the method, the mapping relation between the input power and the outlet temperature of the electrolytic cell and the circulating water flow is constructed. The mapping relation considered by multiple factors can more accurately reflect the relation between the heat production of the electrolytic bath and the circulating water flow, so that the accurate control on the circulating water flow is realized, and the temperature control precision is improved.

The invention belongs to the technical field of new energy hydrogen production, and particularly relates to an operation optimization control method and system for a solid oxide electrolytic hydrogen production system, and the method comprises the steps: building a dual-time scale dynamic model of the electrolytic hydrogen production system, and outputting a thermal-electric coupling dynamic process of the solid oxide electrolytic hydrogen production system; the actual electrolysis efficiency, the accumulated thermal load and the power grid interaction power at each time are extracted, a dynamic trajectory optimization functional is constructed, and optimal control is solved; establishing a power grid auxiliary service three-dimensional decision space for primary optimization, and generating a demand decision; establishing a fuzzy control rule of the fuzzy self-adaptive PID controller to carry out secondary optimization; a dynamic safety constraint mechanism is established, and the heat flow gradient adjustment amount, the gas circulation rate and the temperature are adjusted in time; and defining a system efficiency optimization index to evaluate a system operation optimization effect. According to the method, the thermal-electric coupling dynamic process of the solid oxide electrolytic hydrogen production system can be accurately depicted at multiple time scales, and safe and stable operation of the system is guaranteed.

The invention relates to the technical field of wind-solar power generation hydrogen production, in particular to a wind-solar combined water electrolysis hydrogen production method and system.The method comprises the steps that output power data of wind power generation equipment and photovoltaic power generation equipment and input power data of an alkaline electrolytic bath are collected, and the collected data are preprocessed; respectively acquiring comprehensive adjustment coefficients of the wind power generation equipment and the photovoltaic power generation equipment; and determining the disturbance step length of the corresponding power generation equipment in the maximum power point tracking algorithm based on the perturbation and observation method at the current moment by using the comprehensive adjustment coefficient. The invention aims to dynamically adjust the disturbance step length, prevent the output power from wandering near the maximum power point to generate oscillation, and improve the stability and hydrogen production efficiency of a hydrogen production system.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

The utility model discloses a flow regulating device for hydrogen doping of natural gas, which belongs to the technical field of hydrogen doping of natural gas and comprises a protective box, a support table is placed at one end in the protective box, a hydrogen tank and a natural gas tank are placed on the support table, and the hydrogen tank and the natural gas tank are respectively communicated with a hydrogen pipe and a natural gas pipe. Through cooperation of a first electromagnetic valve and a second electromagnetic valve, a manual switch can be replaced to control circulation of hydrogen and natural gas, a detection assembly is arranged in mixed gas, and starting of the first electromagnetic valve, the second electromagnetic valve and a gas detector can be controlled through a controller; the mixing proportion concentration of hydrogen and natural gas is accurately controlled, the natural gas hydrogen doping flow adjusting efficiency is improved, the ventilation effect can be provided for the interior of the protection box through the arranged ventilation grooves, and the air flowing speed in the protection box can be increased through the fan designed at the top of the protection box.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses a pulse current regulation and control method for water electrolysis hydrogen production, which comprises the following steps: S1, inputting parameter information acquired in real time and basic parameters acquired by initialization into a preset control algorithm model; s2, the control algorithm model calculates the frequency, the duty ratio and the peak current of the pulse current according to the input data; s3, the pulse power supply controller generates a corresponding pulse current signal according to the received parameters and outputs the pulse current signal to an electrode of the electrolytic bath; s4, the operation state of the water electrolysis hydrogen production process is evaluated every certain time interval, deviation data is fed back to the control algorithm model, and the calculation rule of pulse current parameters is optimized and adjusted; the hydrogen generation rate is remarkably increased, so that the hydrogen production efficiency is improved, the energy consumption in the water electrolysis hydrogen production process is effectively reduced, and the hydrogen production cost is reduced.

The invention provides a cooperative control method and device for hybrid hydrogen production, and relates to the technical field of new energy hydrogen production. The cooperative control method for series-parallel hydrogen production comprises the following steps: acquiring a distributable total power instruction of a series-parallel hydrogen production array and operation data of the series-parallel hydrogen production array; determining the load change of the series-parallel hydrogen production array according to the operation data and the distributable total power instruction; determining preliminary distribution power and load flag bit information of the electrolytic cell according to the load change, the operation data and a preliminary distribution power determination mode of the electrolytic cell corresponding to the load change; and after the series-parallel hydrogen production array works according to the preliminary distribution power for a preset execution time period, according to the load flag bit information, the operation data and a preset expected operation interval corresponding to the PEM electrolytic cell, power replacement of the PEM electrolytic cell and the alkaline electrolytic cell is carried out, so that the series-parallel hydrogen production array works according to the determined final distribution power of the electrolytic cell.