نتایج جستجو برای: electric power generation

تعداد نتایج: 914627  

2011
Mark A. Delucchi Mark Z. Jacobson

This is Part II of two papers evaluating the feasibility of providing all energy for all purposes (electric power, transportation, and heating/cooling), everywhere in the world, from wind, water, and the sun (WWS). In Part I, we described the prominent renewable energy plans that have been proposed and discussed the characteristics of WWS energy systems, the global demand for and availability o...

Journal: :Annals OR 2004
Laura A. Schaefer Andrew J. Schaefer

Hybrid gas turbine-solid oxide fuel cell power generation has the potential to create a positive economic and environmental impact. Annually, the U.S. spends over $235 billion on electricity, and electric utilities emit 550 million metric tons of carbon. The integration of distributed hybrid generation can reduce these emissions and costs through increased efficiencies. In this paper, a model i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1386

سیستم های هایبرید از چندین منبع انرژی جهت تامین بار یک منطقه استفاده می نمایند. این سیستم ها عموما مجهز به سیستم های ذخیره ساز بوده و در مواردی هم می توانند به شبکه اصلی متصل شوند. درهر حالتی محاسبه قدرت اجزاء، مهمترین مساله در طراحی این سیستم ها می باشد. برای دستیابی به این هدف اطلاعات جغرافیایی مانند سرعت وزش باد و میزان تابش خورشید در ساعات مختلف روز و همچنین اطلاعات اقتصادی مانند هزینه های ...

2013
MA LILI XIA JIAKUAN HE XIN

How to deal with and use of electricity efficiently from the thermoacoustic power generation system, including the rectifier, inverter, storage, are another question faced with. The reason was analyzed based on thermal acoustic instability and the oscillation amplitude difference. The idea was put forward how to solve thermoacoustic wave instability or oscillatory amplitude difference. If power...

2013
Sharad W. Mohod Mohan V. Aware

The aim of the electric power system is to produce and deliver to the consumer’s electric energy of defined parameters, where the main quantities describing the electric energy are the voltage and frequency. During normal operation of system the frequency varies as a result of the variation of the real power generated and consumed. At the same time, because of voltage drops in the transmission ...

2013
Anja Ohsenbrügge

The nuclear phase-out and the increased share of renewable distributed generation implicate new challenges for transforming the electric power system into an environmentally sustainable, reliable and cost-efficient system. An important component in transforming the electric power system is the reliable substitution of large controllable power plants by small generation units (photovoltaic syste...

2012
Marcelo Gustavo Molina

In general, a large percentage of the electric power produced is generated in huge generation centres far from the consumption, and with centralized transmission and distribution systems, where the weak point of this scheme is the efficiency with high energy losses in the form of heat. This problem has been increased in the last years due to the significant growth of electric energy demand and ...

Journal: :رادار 0
محمد علی ملکوتیان مرتضی فتحی پور

the possibility of terahertz generation has been investigated from a photoconductive switch based on gaas, gated by a femtosecond laser. the emission properties of photoconductive antenna (pca) with low-temperature-grown (lt) gaas have been studied. in such gaas materials presence of the charged defects induces a redistribution of the electric field between the antenna electrodes. this effect h...

2012
Le Xie Yingzhong Gu Ali Eskandari Mehrdad Ehsani

In this paper, a model predictive control (MPC)-based coordinated scheduling framework for variable wind generation and battery energy storage systems (BESSs) is presented. On the basis of the short-term forecast of available wind generation and price information, a joint look-ahead optimization is performed by the wind farm and storage system to determine their net power injection to the elect...

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