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Techno-economic-environmental feasibility study of a photovoltaic system in northern part of Iran including a two-stage multi-string inverter with DC-DC ZETA converter and a modified P&O algorithm

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Clean Energy 2022年第1期6卷 127-140页

作者： Sina Semeskandeh Mehrdad Hojjat mohamad hosseini abardeh Department of Electrical and Computer Engineering Shahrood BranchIslamic Azad UniversityShahroodIran

Inverters play a significant role in the configuration of grid-connected photovoltaic(PV)systems.The perturb-and-observe(P&O)algorithm is a common method to derive the maximum power from grid-connected inverters;however,the possibility of losing maximum power due to sudden changes in radiation is a significant drawback of this control strategy.To overcome this barrier,the two-stage multi-string inverter using the ZETA DC-DC converter and a novel P&O algorithm has been proposed to increase the efficiency of these systems.The proposed inverter has been simulated in MATLAB/SIMULINK software.To investigate the performance of the proposed inverter,technical,environmental and economic feasibility studies have been performed for the construction of a 5-kW PV power plant in a northern city of Iran(Sari)using the RETScreen software developed by Natural Resources Canada.On the other hand,most feasibility studies for power-plant construction are based on the concept of inverter peak efficiency,which leads to non-optimal system design due to the short operation duration of the inverter at this value.However,the weighted European efficiency has been used in the feasibility study for more accurate computations.Moreover,the performance of the proposed inverter is compared to that of a two-stage multi-string inverter using a conventional P&O algorithm and the single-stage(central)inverter.The simulation results indicated that the proposed inverter injects 7.6 MW of power into the grid per year.Moreover,it prevents the emission of 88 tons of CO_(2)(over 20 years),which is equivalent to saving 1883.5 litres of gasoline per year.

关键词： photovoltaic environmental inverter grid-connected feasibility P&O algorithm

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Techno-economic-environmental comparison of floating photovoltaic plant with conventional solar photovoltaic plant in northern Iran

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Clean Energy 2022年第2期6卷 353-361页

作者： Sina Semeskandeh Mehrdad Hojjat mohamad hosseini abardeh Department of Electrical and Computer Engineering Shahrood BranchIslamic Azad UniversityShahroodIran

Photovoltaic(PV)systems can be used to generate electricity due to the potential for solar energy in Iran.Applying floating photovol-taic(FPV)systems is a new approach to utilizing PV systems in water.Most of Iran’s energy consumption is supplied from fossil fuels,especially oil and gas.In recent years,Iran has faced environmental problems and air pollution.Electricity generation using fossil fuels has led to increased environmental pollution.Accordingly,PV systems can be used to generate electricity due to the potential for solar energy in Iran.The interest in predicting the energy production of PV power plants has increased in recent years.In this regard,the techno-economic-environmental study of constructing PV power plants is a basic process to encourage people to use solar energy.A techno-economic-environmental feasibility study has been performed to construct a 5-kW FPV and ground PV(GPV)power plant in a northern city of Iran.Also,the FPV system is compared with the ground PV system using MATLAB^(■)Simulink and RETScreen^(■)software.In this study,the effects of wind and water temperature have been considered.Also,a sensitivity analysis was performed due to the uncertainty in climatic conditions and the amount of PV energy generation.The simulation results show that due to the cooling effect for panels in the FPV system,the production capacity and panels’efficiency are respectively 19.47%and 27.98%higher than the those of the GPV system.In addition,the FPV system was found to have a 16.96%increase in the annual performance ratio.Overall,using the FPV system reduces the equity payback to 6.3 years(a 22.2%reduction compared to the GPV power plant).

关键词： photovoltaic solar energy floating feasibility environmental

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Multi-objective energy management of island microgrids with D-FACTS devices considering clean energy, storage systems and electric vehicles

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Clean Energy 2023年第5期7卷 1046-1057页

作者： Mahyar Moradi mohamad Hoseini abardeh Mojtaba Vahedi Nasrin Salehi Azita Azarfar Department of Electrical Engineering Shahrood BranchIslamic Azad UniversityShahroodIran Department of Basic Sciences Shahrood BranchIslamic Azad UniversityShahroodIran

The development of microgrids is progressing due to intelligent load demands,clean energy,batteries and electric vehicles.The presence of such systems in microgrids causes power balance inconsistency,leading to increased power losses and deviation in voltage.In this pa-per,a mixed-integer non-linear programming model is proposed for modelling island microgrid energy management considering smart loads,clean energy resources,electric vehicles and batteries.Similarly,a flexible distributed AC transmission system device is proposed to prevent voltage deviation and reduce power losses.A scenario-based multi-objective function has been proposed to decrease energy losses and voltage deviations and energy outages of clean energy resources,reduce emissions from fossil-fired distributed generation and finally decrease load outages to reduce the vulnerability of the islanded microgrid.Regarding the proposed mixed-integer non-linear model and the high number of variables and constraints,a modified evolutionary algorithm based on particle swarm optimization has been proposed to solve the proposed model,which can be more efficient than other algorithms to achieve global optimal solutions.The model presented is implemented on a 33-node island microgrid and the results illustrate that the proposed algorithm and model are effective in reducing energy losses and voltage deviation,as well as reducing the vulnerability of the microgrid.The simulation results demonstrate that the proposed approach can lead to significant improvements in the performance of the microgrid.Specifically,the ap-proach can result in a 27%reduction in losses,a 6%reduction in pollution and a 31%improvement in voltage.Additionally,the approach allows maximum utilization of renewable energy sources,making it a promising solution for sustainable energy management.

关键词： microgrid D-FACTS clean energy battery electric vehicles evolutionary algorithm

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A generalized set of correlations for plus fraction characterization

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Petroleum Science 2012年第3期9卷 370-378页

作者： JAMIALAHMADI mohamad ZANGENEH Hossein hosseini Seyed Sajad Petroleum Engineering Department Petroleum University of Technology Chemical & Petroleum Engineering Department Sharif University of Technology

The importance of accurate determination of the critical properties of plus fractions in prediction of phase behaviour of hydrocarbon mixtures by equations of state is well known in the petroleum industry. It has been stated in various papers （Elsharkawy, 2001） that using the plus fraction as a single group in equation of state calculations reduces the accuracy of the results. However in this work it has been shown that using the proper values of critical temperature and pressure for the plus fraction group can estimate the properties of hydrocarbon mixtures, and they are accurate enough to be used in reservoir engineering and enhanced oil recovery calculations. In this paper, a new method is proposed for calculating the critical properties of plus fractions of petroleum fluids. One can use this method either in predicting critical pressure and temperature of single carbon numbers （SCNs） after the splitting process or in predicting critical pressure and temperature of the plus fraction as a single group. A comparison study is performed against Riazi-Daubert correlation （Riazi and Daubert, 1987） and Sancet correlations （Sancet, 2007） for 25 oil samples taken from 14 fields from southwest Iran. The results indicate the superiority of the proposed method to the Riazi-Daubert and Sancet correlations.

关键词： Plus fraction critical properties correlation single carbon number bubble point calculations

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Au Nanoparticle-Doped TiO2 Nanotubes Catalysts Prepared by Anodizing and Electroplating Methods and Its Application for Nitrite Detection

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材料科学与工程（中英文B版） 2012年第1期2卷 16-23页

作者： Mir Ghasem hosseini mohamad Mohsen Momeni Solmaz Zeynali Electrochemistry Research Laboratory Department of Physical Chemistry Chemistry Faculty University of Tabriz Iran

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