نتایج جستجو برای: wind energy

تعداد نتایج: 731968  

Journal: :energy equipment and systems 0
pedram hanafizadeh center of excellence in design and optimization of energy systems, school of mechanical engineering, college of engineering, university of tehran, tehran, iran, p. o. box: 11155-4563 amirmohammad sattari center of excellence in design and optimization of energy systems, school of mechanical engineering, college of engineering, university of tehran, tehran, iran, p. o. box: 11155-4563 seyed erfan hosseinidoost center of excellence in design and optimization of energy systems, school of mechanical engineering, college of engineering, university of tehran, tehran, iran, p. o. box: 11155-4563 ashkan irannezhad center of excellence in design and optimization of energy systems, school of mechanical engineering, college of engineering, university of tehran, tehran, iran, p. o. box: 11155-4563 pouria ahmadi fuel cell research lab (fcrel), mechatronic system engineering, simon fraser university, vancouver, canada

in this research paper, a 10 minute period measured wind speed data at 10 m, 30 m, and 40 m heights are presented for one of the major provinces of iran. four stations in khuzestan- abadan, hosseyneh, mahshahr, and shushtar- are analyzed to determine the potential of wind power generation in this province. from the primary evaluation and by determining mean wind speed and also the weibull funct...

D. Yu L. Hongjun L. Junnan L. Yalei X. Dapeng X. Lixiong Y. Zhanxin Z. Fang

For economic benefit of wind power generation, the equivalent conversion relationships and models between the different “quality” energy are studied deeply in the conversion processes of wind energy. Considering the effect of load demand characteristics and energy supply price on the wind energy utilization mode comprehensively, the multi-objective trans-utilization optimization model of wind e...

Journal: :international journal of environmental research 0
t.l. graham department of geography and environmental science program, university of north texas 1155 :union: circle #305279, denton, tx 76203-5279, usa p.f. hudak department of geography and environmental science program, university of north texas 1155 :union: circle #305279, denton, tx 76203-5279, usa

the purpose of this study was to estimate relative potential hazards to birds and bats from wind developments in texas. we compiled lists of rare, threatened, or endangered species, along with their respective ranges in texas. using a geographic information system (gis), we calculated a potential hazard index (phi) for 31 bird and ten bat species based upon the percentage of known or observed s...

Journal: :energy equipment and systems 0
hamid moradtabrizi school of mechanical engineering, college of engineering, university of tehran, tehran, iran edris bagheri school of mechanical engineering, college of engineering, university of tehran, tehran, iran amir nejat school of mechanical engineering, college of engineering, university of tehran, tehran, iran hamid kaviani school of mechanical engineering, college of engineering, university of tehran, tehran, iran

wind power has been widely considered in recent years as an available and a clean renewable energy source. the cost of wind energy production is currently the main issue, and increasing the size of wind turbines can reduce wind energy production costs. hence, megawatt wind turbines are being rapidly developed in recent years. in this paper, an aerodynamic analysis of the nrel 5mw turbine is car...

Journal: :international journal of smart electrical engineering 2013
mohammad sarvi mohammad parpaei

nowadays the position of the renewable energy is so important because of the environment pollution and the limitation of fossil fuels in the world. energy can be generated more and more by the renewable sources, but the fossil fuels are non-renewable. one of the most important renewable sources is the wind energy. the wind energy is an appropriate alternative source of fossil fuel. the replacem...

ژورنال: انرژی ایران 2019

With population growth and progress of human society and human life needs to energy sources and also environmental pollution caused by fossil fuels, many countries are looking to use clean energy sources. Wind energy is one of them. In this paper was to evaluate the potential of wind energy in Yazd city. After review and analysis of meteorological data from 2011 to 2014 by software, the annual ...

Journal: :مهندسی برق و الکترونیک ایران 0
s. ghassem zadeh s. h. hosseini g.b. gharehpetian

a detailed model of wind power station, including double fed induction generator, dfig is presented in this paper. two control mechanisms are included in the model. the inner control system uses stator flux oriented control for the rotor side converter and grid voltage vector control for the grid side converter. the outer control system is used for wind turbine pitch angle. pscad/emtdc is used ...

Journal: :پژوهش های جغرافیای طبیعی 0
مجید رضایی بنفشه دانشیار گروه جغرافیای طبیعی، دانشکدۀ جغرافیا و برنامه‎یزی، دانشگاه تبریز، ایران سعید جهانبخش استاد گروه جغرافیای طبیعی، دانشکدۀ جغرافیا و برنامه‎ریزی، دانشگاه تبریز، ایران یعقوب دین پژوه دانشیار گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، ایران مرضیه اسمعیل پور دکتری تخصصی اقلیم‎شناسی در برنامه‎ریزی محیطی، دانشکدۀ جغرافیا و برنامه‎ریزی، دانشگاه تبریز، ایران

introductionin comparison with fossil fuels which pollute the lower layer of the atmosphere, use of windenergy has many environmental and economic advantages. wind is a clean and renewableenergy resource and use of the energy in the recent decades has been welcomed so much in theworld. energy plays an important role in the development of each society. all differentactivities including housing, ...

Journal: :energy equipment and systems 0
seyed-hadi mozafarpoor-khoshrodi electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran ghazanfar shahgholian electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran

one of the main problems in wind energy conversion system (wecs) is how to achieve maxim­u­m output power in different wind speeds. maximum methods for maximum power point tracking in wind energy conversion syst­e­ms require the knowledge of system characteristics and mechanic sensors. so, using these methods practically will follow with high price and an abundant difficulties. in this paper, n...

Journal: :international journal of environmental research 2011
t.l. graham p.f. hudak

the purpose of this study was to estimate relative potential hazards to birds and bats from wind developments in texas. we compiled lists of rare, threatened, or endangered species, along with their respective ranges in texas. using a geographic information system (gis), we calculated a potential hazard index (phi) for 31 bird and ten bat species based upon the percentage of known or observed ...

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