نتایج جستجو برای: renewable energy sources

تعداد نتایج: 929768  

2012
Orhan Ekren Banu Yetkin Ekren

Energy is an important fact for a country for both its socio-economic development and economic growth. Main energy source on earth is the fossil fuels. However, the usage of fossil fuels causes global warming whose negative effects have recently been felt by all over the world. Also, because it is limited on earth, increased energy demand and high energy prices increase concerns on fossil fuels...

2016
Bo Sun Pavlo Krokhmal BO SUN Andrew Kusiak Amaury Lendasse Raghuraman Mudumbai Maciej Rysz Alexander Vinel Yana Morenko Dmitri Chernikov Nathaniel Richmond Huan Yu Yuxing Hou Baosheng He

The need for effective energy harvesting from renewable resources becomes increasingly important, especially in the light of the inevitable depletion of the fossil fuel energy sources. Among renewable energy sources, wind energy represents one of the most attractive alternatives. In this thesis, we construct several stochastic optimization models, including the traditional risk-neutral expectat...

Parisa Raeisi Mahdi Abadi R. Sharifi Shabnam Vahdati Daneshmand,

High costs, unreliable resources for long term use and extensive negative impact on our environment are such problems associated with traditional sources of energy and fossil fuels which make us move toward implementation of renewable sources of energy. Fossil fuel pollution and reserve depletion in oil producing countries caused by increasing demands, make wind energy an attractive source of e...

A. Shahmoradi M. Kalantar

This paper presents a formulation of unit commitment for thermal units integrated with wind and solar energy systems and electrical vehicles with emphasizing on Mixed Integer Nonlinear Programming (MINLP). The renewable energy resources are included in this model due to their low electricity cost and positive effect on environment. As well as, coordinated charging strategy of electrical vehicle...

2016
A. Gürhan Kök Kevin Shang Şafak Yücel

There is an ongoing debate among energy experts on how providing a subsidy for one energy source affects the investment in other sources. To explore this issue, we study capacity investments of a utility firm in renewable and conventional sources. Specifically, conventional sources are categorized into two groups as inflexible (e.g., nuclear and coal-fired plants) and flexible (e.g., natural ga...

Microgrid and smart electrical grids are among the new concepts in power systems that support new technologies within themselves. Electric cars are some advanced technologies that their optimized use can increase grid efficiency. The modern electric cars sometimes, through the necessary infrastructure and proper management, can serve as an energy source to supply grid loads. This study was cond...

2009
Pragya Nema Saroj Rangnekar

The wind and solar energy are omnipresent, freely available, and environmental friendly. The wind energy systems may not be technically viable at all sites because of low wind speeds and being more unpredictable than solar energy. The combined utilization of these renewable energy sources are therefore becoming increasingly attractive and are being widely used as alternative of oil-produced ene...

2017
Jiefeng Zhu Jianguo Guerrero Josep M

The exploitation of renewable energy and the development of intelligent electricity network have become the main concerns worldwide. This paper aims to integrate renewable energy sources, local loads, and energy storage devices into smart microgrids. It proposes a new microgrid configuration required to realise high-performance of distributed generations and will realise innovative control tech...

2017
Y. Naveen

This paper presented a closed loop control of asymmetrical PWM full bridge converter; Renewable energy and distributed generation are getting more and more popular, wind turbines, and fuel cells. The renewable energy sources need the power electronics interface to the utility grid because of different characteristics between the sources and the grid. No matter what renewable energy source is ut...

2016
P. Sushma Devi Venu Gopala Rao

Abstract:This paper presents the planning of an optimal Energy Management System (EMS) supported by a fuzzy logic Controller (FLC) for a residential grid-connected micro grid with hybrid renewable generation (Wind & Photo Voltaic) and storage system. Modelling hybrid system includes Renewable Energy Sources given at intermittent supply conditions and dynamic energy demand, and to make conceptua...

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