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Modeling, Control &Fault Management of Microgrids

Smart Grid and Renewable Energy 2013年第1期4卷 99-112页

作者： Mehdi Moradian faramarz mahdavi tabatabaei Sajad Moradian Department of Electrical Engineering Iran University of Science and Technology Tehran Iran. Department of Electrical Engineering Sahand University of Technology Tabriz Iran Saman Gostar Company (Distributor of SANTERNO Italy) Tehran Iran

In this paper, modeling and decentralize control principles of a MicroGrid (MG) whom equipped with three Distributed Generation (DG) systems (consist of: Solar Cell System (SCS), MicroTurbine System (MTS) and Wind Energy Conversion System (WECS)) is simulated. Three arrangement of load changing have investigated for the system. In first one the system doesn’t have transfer of power between MG and grid. In other two arrangements system have transfer of power between MG and utility grid. Of course in third case transfer of power between DG resources is considerable. Case study system is equipped by energy storage devices (battery bank) for each DG’s separately by means of increasing the MG reliability. For WECS and SCS, MPPT control and for MTS, voltage and frequency (V&F) controller has designed. The purpose of this paper is load respond in MG and storage process of surplus energy by consider of load changing. MATLAB/Simulink and its libraries (mainly the Sim Power Systems toolbox) were employed in order to develop a simulation platform suitable for identifying MG control requirements. This paper reported a control and op- eration of MG in network tension by applying a three phase fault.

关键词： Microgrid Decentralize Control Wind Energy Conversion System Microturbine Solar Cell

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Hexagonal connectivity maps for Digital Earth

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International Journal of Digital Earth 2015年第9期8卷 750-769页

作者： Ali mahdavi-Amiri Erika Harrison faramarz Samavati Department of Computer Science University of CalgaryCalgaryABCanada

Geospatial data are gathered through a variety of different *** integration and handling of such datasets within a Digital Earth framework are very important in many aspects of science and *** means of addressing these tasks is to use a Discrete Global Grid System and map points of the Earth’s surface to *** indexing mechanism is needed to access the data and handle data queries within these *** this paper,we present a general hierarchical indexing mechanism for hexagonal cells resulting from the refinement of triangular spherical polyhedra representing the *** this work,we establish a 2D hexagonal coordinate system and diamond-based hierarchies for hexagonal cells that enables efficient determination of hierarchical relationships for various hexagonal refinements and demonstrate its usefulness in Digital Earth frameworks.

关键词： Digital Earth framework hexagonal subdivision indexing triangulation hierarchy multiresolution

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Application of digital techniques to identify aquifer artificial recharge sites in GIS environment

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International Journal of Digital Earth 2013年第6期6卷 589-609页

作者： A.mahdavi S.H.tabatabaei R.mahdavi M.R.Nouri Emamzadei Department of Water Engineering Shahrekord UniversityShahrekordIran Department of Natural Resources Engineering Hormozgan UniversityBandar AbbasIran

Because the groundwater is considered as the major source of 99%of all retrievable fresh water,optimization of its usage would be very ***water artificial recharge(GAR)using surface water is the recommended solution because that increases the aquifer *** of aquifer storage site is the first step in designing GAR *** main objective of this research is the identification of suitable GAR sites scattered in the Shahrekord plain,Chaharmahal-va-Bakhtiari province of Iran,using Boolean and Fuzzy *** affecting GAR including ground surface slope,soil infiltration rate,vadoze zone thickness,electrical conductivity of the surface water,land-use,and stream network were *** provision of digital maps,they were classified,weighted,and integrated through Boolean and Fuzzy *** result revealed almost 4.25%of the whole plain area is appropriate for GAR based on ***,4.79 and 17.94%of the plain area are suitable and rather favorable,respectively,based on ***,34 locations were introduced with priorities A,B,and AB as being potentially suitable for *** relationship between geomorphology and suitable areas for GAR based on Boolean and Fuzzy method indicated that the majority of these areas were located on colluvial fans units.

关键词： groundwater artificial recharge Fuzzy and Boolean logic geomorphology Shahrekord plain

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Synthesis of the 1,3-oxathiolanes using asymmetrically oxiranes

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Chinese Chemical Letters 2011年第10期22卷 1143-1146页

作者： faramarz Rostami-Charati Zinatossadat Hossaini Bita Mohtat Mehdi Shahraki Mohammad R.Hosseini-tabatabaei Department of Chemistry Facualty of ScienceGonbad Kavous UniversityP.O.Box 163GonbadIran Department of Chemistry Qaemshahr BranchIslamic Azad University QaemshahrIran Department of Chemistry Islamic Azad UniversityKaraj BranchKarajIran Islamic Azad University Zahedan BranchZahedanIran

An efficient synthesis of 1,3-oxathiolane-2-imin derivatives is described via one-pot reaction between arylisothiocyanats, asymmetrically substituted oxiranes and catalytic amount of *** mild reaction conditions and h... 详细信息

关键词： 1 3-Oxathiolane-2-imine Oxirane Methanol One-pot reactions Arylisothiocyanats

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