نتایج جستجو برای: wind power

تعداد نتایج: 554233  

2002
Sampo Soimakallio Ilkka Savolainen

Wind power, as a renewable source of energy, reduces the greenhouse gas emissions. For Finland, the technology also brings business opportunities, as the Finnish industry already has a position in the global, fast growing wind power market. The wind energy project within the Climtech Programme focused on the technology export potential of Finnish industry in wind power markets, and on the reduc...

2016
Yeonho Ok Jaewon Lee Jaeho Choi

Abstract: Wind power systems are being integrated increasingly into the power grid because of their large capacity and easy access to the transmission grid. The reliability of wind power plants is very important and the elimination of protective relay’s malfunctions is essential to the mitigation of power quality problems due to the frequent starts and stops of high capacity wind generators. In...

2003
J. L. RUEDA

This paper surveys the impact of large scale wind power integration on the small signal stability performance of the power systems. For this purpose, different factors concerning wind power generation such as wind power integration levels and wind power plant location are considered in the small signal stability assessment of a weak power system via modal analysis. The changes in the modal char...

2005
S. Shiraishi T. Nagai H. Hayashi K. Nishi H. Kume

The amount of wind power generation aims for three millions kWh by 2010 in Japan. It is very few offshore construction in Japan compared with European countries. It is generally said that offshore wind energy is greater than in land area, and few disturbance. In Japan, suitable construction sites for wind power generation in land are decreasing, then, the construction of wind power generation i...

2015
Osvaldo Rodríguez Jesús A. del Río Oscar A. Jaramillo Manuel Martínez Juan A Añel

Estimating the power output is one of the elements that determine the techno-economic feasibility of a renewable project. At present, there is a need to develop reliable methods that achieve this goal, thereby contributing to wind power penetration. In this study, we propose a method for wind power error estimation based on the wind speed measurement error, probability density function, and win...

2013
Ying-Yi Hong Ching-Yun Liu

Operation of wind power generation in a large farm is quite challenging in a smart grid owing to uncertain weather conditions. Consequently, operators must accurately forecast wind speed/power in the dispatch center to carry out unit commitment, real power scheduling and economic dispatch. This work presents a novel method based on the integration of empirical mode decomposition (EMD) with arti...

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...

In recent years, there has been a fast growth in wind energy conversion system (WECS). There are two general types of wind turbines in WECS: fixed speed wind turbines and varying speed wind turbines.Permanent magnet synchronous generator (PMSG) is one of the most attractive generators for the varying speed turbine WECS.In this paper, a fuzzy controller is proposed to control the current source ...

Journal: :journal of computational applied mechanics 0
mohammad ali ardekani associate professor, iranian research organization for science and technology (irost), tehran, iran foad farhani assistant professor, iranian research organization for science and technology (irost), tehran, iran mohsen mazidi instructor, iranian research organization for science and technology (irost), tehran, iran

in a steam power plant, the temperature of the cooling water leaving the condenser for recyclingshould decrease. this is achieved in a cooling tower. the heller cooling tower does not require waterfor operation, thus, it is a suitable system for use in thermal power plants throughout iran. wind is anenvironmental factor that unfavorably affects the performance of a cooling tower. previous studi...

2011
R. Bharanikumar A. C. Yazhini A. Nirmal Kumar

This paper presents Maximum Power Point Control for variable speed wind turbine driven permanentmagnet generator. The wind turbine generator is operated such that the rotor speed varies according to wind speed to adjust the duty cycle of power converter and maximizes Wind Energy Conversion System (WECS) efficiency. The maximum power point for each speed value is traced using Maximum Power Point...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید