检索结果-南通市图书馆

Optimization of Adaptive Fuzzy Controller for Maximum Power Point Tracking Using Whale Algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第12期73卷 5041-5061页

The advantage of fuzzy controllers in working with inaccurate and nonlinear inputs is that there is no need for an accurate mathematical model and fast convergence and minimal fluctuations in the maximum power point *** capability of online fuzzy tracking systems is maximum power,resistance to radiation and temperature changes,and no need for external sensors to measure radiation intensity and ***,the most important issue is the constant changes in the amount of sunlight that cause the maximum power point to be constantly *** controller used in the maximum power point tracking(MPPT)circuit must be able to adapt to the new radiation ***,in this paper,to more accurately track the maximumpower point of the solar system and receive more electrical power at its output,an adaptive fuzzy control was proposed,the parameters of which are optimized by the whale *** studies have repeated under different irradiation conditions and the proposed controller performance has been compared with perturb and observe algorithm(P&O)method,which is a practical and high-performance *** evaluate the performance of the proposed algorithm,the particle swarm algorithm optimized the adaptive fuzzy *** simulation results show that the adaptive fuzzy control system performs better than the P&O tracking *** accuracy and consequently more production power at the output of the solar panel is one of the salient features of the proposed control method,which distinguishes it from other *** the other hand,the adaptive fuzzy controller optimized by the whale algorithm has been able to perform relatively better than the controller designed by the particle swarm algorithm,which confirms the higher accuracy of the proposed algorithm.

关键词： Maximum power tracking photovoltaic system adaptive fuzzy control whale optimization algorithm particle swarm optimization

Control of Distributed Generation Using Non-Sinusoidal Pulse Width Modulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第2期74卷 4149-4164页

作者： mehrdad ahmadi kamarposhti Phatiphat Thounthong Ilhami Colak Kei Eguchi Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybar***Iran Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbul34398Turkey Department of Information Electronics Fukuoka Institute of TechnologyFukuoka811-0295Japan

The islanded mode is one of the connection modes of the grid distributed generation *** this study,a distributed generation resource is connected to linear and nonlinear loads via a three-phase inverter where a control method needing no current sensors or compensator elements is applied to the distribute generation system in the islanded *** control method has two main loops in each *** first loop controls the voltage control loops that adjust the three-phase point of common coupling,the amplitude of the non-sinusoidal reference waveform and the near-state pulse width modulation(NSPWM)*** next loop compensates the harmonic compensator loop that calculates the voltage harmonics of the point of common coupling in each phase,and injects them to compensate the non-sinusoidal reference waveforms of each *** simulation results in MATLAB/SIMULINK show that this method can generate balanced threephase sinusoidal voltage with an acceptable total harmonic distortion(THD)at the joint connection point.

关键词： Islanded mode distributed generation resource the point of common coupling voltage total harmonic distortion

Modeling and Simulation of DVR and D-STATCOM in Presence of Wind Energy System

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第2期74卷 4547-4570页

作者： mehrdad ahmadi kamarposhti Ilhami Colak Phatiphat Thounthong Kei Eguchi Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand Department of Information Electronics Fukuoka Institute of TechnologyFukuokaJapan

The present study suggests that series voltage injection is more effective than parallel current injection to improve voltage quality on the load *** line voltage can be accurately symmetrized at the connection point by creating and controlling a series voltage component in each *** is more reliable and effective than parallel current injection.A dynamic voltage restorer(DVR)and a distribution static synchronous compensator(DSTATCOM)were utilized to provide the required *** DVR is an effective andmodern device utilized in parallel within the grid and can protect sensitive loads from voltage problems in the grid by injecting *** DVR and D-STATCOM were used to improve voltage stability in faults.A standard 13-bus system was studied in the presence of a wind *** simulation results demonstrated that single and three-phase overloads dramatically altered the voltage of the system,making it necessary to use compensators to improve voltage *** DVR and D-STATCOM showed similar performance under normal conditions and somewhat improved grid voltage ***,the DVR outperformed D-STATCOM under asymmetric faults conditions and led to lower voltage variations.

关键词： Power quality distribution system DVR D-STATCOM wind turbine

A New Framework for Employing Responsive End-Users Using FAHP and PSO Algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第1期74卷 951-964页

作者： Reza Etemad Mohammad Sadegh Ghazizadeh mehrdad ahmadi kamarposhti Ilhami Colak Kei Eguchi Faculty of Electrical Engineering Shahid Beheshti UniversityA.C.TehranIran Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Department of Information Electronics Fukuoka Institute of TechnologyFukuokaJapan

The capacitor bank and synchronous condenser have been the only available sources of reactive ***,most of the appliances use a power electronic interface for their *** a power electronic interface addsmany features to these *** of the promising features is their capability to interact with Volt-VAR *** this paper was investigated the reactive power interaction of the end-user *** this purpose,the distribution network buses are ranked based on their effectiveness,followed by studying their interaction in the Volt-VAR *** be able to consider the uncertainties,Probability Density Function(PDF)curve was discretized to represent different scenarios,and the reduction method was utilized to reduce the situations.

关键词： End-user FAHP load uncertainty reactive power smart grid voltage profile

Optimal Allocation of STATCOM to Enhance Transient Stability Using Imperialist Competitive Algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第6期36卷 3425-3446页

作者： Ayman Amer Firas MMakahleh Jafar Ababneh Hani Attar Ahmed Amin Ahmed Solyman mehrdad ahmadi kamarposhti Phatiphat Thounthong Department of Energy Zarqa UniversityZarqa13133Jordan Department of Mechanical Engineering Al-Zaytoonah University of JordanAmman11733Jordan Abdul Aziz Al Ghurair School of Advanced Computing(ASAC) Luminus Technical University CollegeJordan Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand

With the daily expansion of global energy consumption,developing the power grids is of uttermost ***,building a new trans-mission line is costly and time-consuming,so utilizing the same lines with possible higher transmission capacity is very *** this regard,to increase the capacity of the transmission lines,the flexible alternating current transmission system(FACTS)has been widely used in power grids in recent years by industrialized *** of the essential topics in electrical power systems is the reactive power compensation,and the FACTS plays a significant role in controlling the reactive power current in the power grid and the system voltage oscillations and *** a static synchronous compensator(STATCOM)is embedded in a power system to increase the bus voltage,a supplementary damping controller can be designed to enhance the system oscillation *** the expansion of the grids in the power system,the complexity of their optimization and the extraordinary ability of the imperialist competitive algorithm(ICA)for solving such problems,in this paper,the ICA has been used to determine the optimal position and size of the FACTS devices.

关键词： STATCOM FACTS optimization transient stability imperialist competitive algorithm

Optimal Management of Energy Storage Systems for Peak Shaving in a Smart Grid

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第5期75卷 3317-3337页

作者： Firas M.Makahleh Ayman Amer Ahmad A.Manasrah Hani Attar Ahmed A.A.Solyman mehrdad ahmadi kamarposhti Phatiphat Thounthong Department of Mechanical Engineering Al-Zaytoonah University of JordanAmman11733Jordan Department of Energy Engineering Zarqa UniversityZarqa13133Jordan Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbul34398Turkey Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand

In this paper,the installation of energy storage systems(EES)and their role in grid peak load shaving in two echelons,their distribution and generation are ***,the optimal placement and capacity of the energy storage is taken into consideration,then,the charge-discharge strategy for this equipment is ***,Genetic Algorithm(GA)and Particle Swarm Optimization(PSO)are used to calculate the minimum and maximum load in the network with the presence of energy storage *** energy storage systems were utilized in a distribution system with the aid of a peak load shaving ***,the battery charge-discharge is managed at any time during the day,considering the load consumption at each *** results depict that the load curve reached a constant state by managing charge-discharge with no significant *** shows the significance of such matters in terms of economy and technicality.

关键词： Cost energy storage particle swarm optimization(PSO) peak load smart grid

Quantum dense coding with gravitational cat states

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第3期76卷 84-90页

作者： Saeed Haddadi mehrdad Ghominejad Artur Czerwinski Faculty of Physics Semnan UniversityP.O.Box 35195-363SemnanIran Centre for Quantum Optical Technologies Centre of New TechnologiesUniversity of WarsawBanacha 2c02-097 WarszawaPoland

A protocol of quantum dense coding with gravitational cat states is *** explore the effects of temperature and system parameters on dense coding capacity and provide an efficient strategy to preserve the quantum advantage of dense coding for these *** results may open new opportunities for secure communication and insights into the fundamental nature of gravity in the context of quantum information processing.

关键词： quantum dense coding gravitational cat states quantum advantage

Optimal Operation of Distributed Generations Considering Demand Response in a Microgrid Using GWO Algorithm

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2023年第10期47卷 809-822页

作者： Hassan Shokouhandeh mehrdad ahmadi kamarposhti William Holderbaum Ilhami Colak Phatiphat Thounthong Department of Electrical Engineering Semnan UniversitySemnanIran Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran School of Science Engineering and EnvironmentUniversity of SalfordSalfordUK Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand

The widespread penetration of distributed energy sources and the use of load response programs,especially in a microgrid,have caused many power system issues,such as control and operation of these networks,to be *** control and operation of many small-distributed generation units with different performance characteristics create another challenge for the safe and efficient operation of the *** this paper,the optimum operation of distributed generation resources and heat and power storage in a microgrid,was performed based on real-time pricing through the proposed gray wolf optimization(GWO)algorithm to reduce the energy supply cost with the *** generation resources such as solar panels,diesel generators with battery storage,and boiler thermal resources with thermal storage were used in the studied ***,a combined heat and power(CHP)unit was used to produce thermal and electrical energy *** the simulations,in addition to the gray wolf algorithm,some optimization algorithms have also been *** the results of 20 runs for each algorithm confirmed the high accuracy of the proposed GWO *** results of the simulations indicated that the CHP energy resources must be managed to have a minimum cost of energy supply in the microgrid,considering the demand response program.

关键词： Microgrid demand response program cost reduction gray wolf optimization algorithm

Synergistic effect of adsorption and photocatalytic degradation of oilfield-produced water by electrospun photocatalytic fibers of Polystyrene/Nanorod-Graphitic carbon nitride

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第7期141卷 287-303页

作者： Parisa Azmoon mehrdad Farhadian Alireza Pendashteh Amir H.Navarchian Department of Chemical Engineering Faculty of EngineeringUniversity of IsfahanIsfahanIran Department of Chemical Engineering Faculty of EngineeringUniversity of GuilanRashtIran Department of Water and Environmental Engineering Caspian Sea Basin Research CenterUniversity of GuilanRashtIran

Graphitic carbon nitride with nanorod structure(Nr-GCN)was synthesized using melamine as a precursor without any other reagents by hydrothermal pretreatment ***,FTIR,SEM,N_(2)adsorption-desorption from BET,UV-Vis DRS spectroscopy,and photoluminescence were used to characterize the prepared ***,the photoelectrochemical behavior of nanoparticles was studied by photocurrent transient response and cyclic voltammetry ***(PS)fibrous mat was fabricated by electrospinning technique and used as a support for the stabilization of the *** performance of the synthesized nanoparticles and photocatalytic fibers(PS/Nr-GCN)was evaluated in oilfield-produced water treatment under visible light *** this process,oil contaminants were adsorbed by hydrophobic polystyrene fibers and simultaneously degraded by *** removal efficiency of chemical oxygen demand(COD)has been obtained 96.6%and 98.4%by Nr-GCN and PS/Nr-GCN,respectively,at the optimum conditions of pH4,photocatalyst dosage 0.5 g/L,COD initial concentration 550 mg/L,and illumination time 150 *** gas chromatography-mass spectroscopy analysis results showed 99.3%removal of total petroleum hydrocarbons using photocatalytic fibers of PS/*** results demonstrated that the GCN has outstanding features like controllable morphology,visible-light-driven,and showing high potential in oily wastewater ***,the synergistic effect of adsorption and photocatalytic degradation is an effective technique in oilfield-produced water treatment.

关键词： Graphitic carbon nitride(GCN) Nanorod structure Polystyrene fibrous mat Photocatalytic fibers Oilfield-produced water(OPW)