Photovoltaic energy generation in Brazil – Cost analysis using coal-fired power plants as comparison

2013 ◽  
Vol 52 ◽  
pp. 183-189 ◽  
Author(s):  
Corrado Lacchini ◽  
João Carlos V. Dos Santos
2021 ◽  
Vol 34 (1) ◽  
pp. 106882
Author(s):  
Mahdi Khodayar ◽  
Mohammad E. Khodayar ◽  
Seyed Mohammad Jafar Jalali

Smart Grids ◽  
2017 ◽  
pp. 275-309
Author(s):  
Ayman Blorfan ◽  
Damien Flieller ◽  
Patrice Wira ◽  
Guy Sturtzer ◽  
Jean Mercklé

2021 ◽  
Author(s):  
HENRIQUE JAHNKE HOCH ◽  
TIAGO MIGUEL KLEIN FAISTEL ◽  
ADEMIR TOEBE ◽  
ANTóNIO MANUEL SANTOS SPENCER ANDRADE

High step-up DC-DC converters are necessary in photovoltaic energy generation, due the low voltage of the panels source. This article propose the Doubler Output Coupled Inductor converter. This converter is based in boost converter and utilize switched capacitors and a coupled inductor to maximize the static voltage gain. The converter achieve a high voltage gain with low turns ratio in the coupled inductor and an acceptable duty cycle. Can highlight the converter utilize low number of components and have low voltage and current stresses in semiconductors. To validate and evaluate the operation of the converter a 200W prototype is simulated.


2018 ◽  
Author(s):  
Vaibhav Yadav ◽  
Jason K. Hansen ◽  
Shawn W. St. Germain ◽  
Robby Christian

Energy ◽  
2016 ◽  
Vol 112 ◽  
pp. 774-787 ◽  
Author(s):  
Juan José Cartelle Barros ◽  
Manuel Lara Coira ◽  
María Pilar de la Cruz López ◽  
Alfredo del Caño Gochi

2020 ◽  
Vol 144 ◽  
pp. 134-141
Author(s):  
Konstantin K. Il'kovskii ◽  
◽  
Fedor Yu. Lukovtsev ◽  
Guzel' R. Akhmetshina ◽  
◽  
...  

The article dwells on technological and environmental effects of implementing a comprehensive program for optimizing local energy, reducing CO2 emissions from energy generation at diesel power plants. The possibility of using “green” finance as an investment tool is also addressed.


Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 645
Author(s):  
Gary Ampuño ◽  
Juan Lata-Garcia ◽  
Francisco Jurado

The increase of renewable energy generation to change the productivity of a country and electrify isolated sectors are some of the priorities that several governments have imposed in the medium term. Research centers are looking for new technologies to optimize the use of renewable energies and incorporate them into hybrid generation systems. In the present work, the modeling of a solar thermal energy generation plant is being carried out. The climatic data used belong to two coastal cities and one island of Ecuador. The contribution of this work is to simulate a complete model of SCF and PCS, in which the variables of outlet temperature and oil flow are involved at the same time. Previously investigations use only outlet temperature for evaluating power plants. The model of the solar thermal plant is composed of a field of solar collectors, a storage tank, and an energy conversion system. As a result, we obtain a model of a thermosolar plant that will allow us to make decisions when considering the incorporation of micronetworks in systems isolated from the electrical network. The use of thermosolar technology allows the reduction in the risk of spills by the transport of fossil fuels in ships. The study of the CO2 emission factor in Ecuador from 2011 to 2018 is also carried out.


2020 ◽  
Vol 54 (10) ◽  
pp. 6272-6280 ◽  
Author(s):  
Peter Psarras ◽  
Jiajun He ◽  
Hélène Pilorgé ◽  
Noah McQueen ◽  
Alexander Jensen-Fellows ◽  
...  

2015 ◽  
Vol 4 (1) ◽  
pp. 11-19
Author(s):  
Mevlan Qafleshi ◽  
Driton R. Kryeziu ◽  
Lulezime Aliko

The energy generation in Albania is completely from the hydropower plants. In terms of GHG emissions this is 100% green. In Kosovo 97% of energy is generated from lignite fired power plants. Apart the energy generation, the combustion process emits around 8000 ktCO2/yr and 1.5 Mt of ash in the form of fly and bottom ash. In both countries there is no MWh power generated from wind energy, i.e. this energy source is not utilized. Here, a proposed project for five locations in Albania and Kosovo has been analyzed in detail with the aim of installing a 1kW wind turbine off-grid. The method of study is based on the application of RETScreen International program software. This proposed model is intended to replace a base case- a diesel generator with installed capacity 7kW.  The locations are selected three in Albania: Vlora, Korça and Elbasan, and two in Kosovo: Prishtina and Prizren. All are in different altitudes. By the calculation of RETScreen program, it has been analyzed the feasibility of the proposed projects by installing a wind turbine at hub’s height 20m. The climate data for each location were retrieved by the RETScreen program from NASA. Generally, the calculation of financial parameters for the investments came out to be positive, the impact of GHG reduction very significant. A 5500 USD investment for the implementation of proposed case showed an equity payback time of 2-3 yrs and GHG reduction of 2.2 tCO2/yr. The electricity delivery to load only from this 1 KW wind turbine resulted to be between 1.6-17 MWh/yr.


Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5605 ◽  
Author(s):  
Matteo Fermeglia ◽  
Paolo Bevilacqua ◽  
Claudia Cafaro ◽  
Paolo Ceci ◽  
Antonio Fardelli

This contribution aims to provide an in-depth outlook of the phase-out of coal-fired energy generation in Italy. In particular, this article analyzes the state-of-the-art with regard to both the current role of coal generation and the performance of the main legal and regulatory tools as implemented in Italy thus far to ensure the closure of all coal power plants by 2025 as announced in the Italian National Climate and Energy Plan. Based on existing data and scenarios on both electricity production and demand trends, this article unfolds the marginal role played by coal-fired generation in the Italian energy mix. In addition, this paper aims to highlight the outstanding technical uncertainties and regulatory hurdles in the way towards de-carbonization of energy generation in Italy. This paper argues that several remarkable improvements are needed in order to avoid over-generation (especially through natural gas), to upscale the penetration of renewable energy sources, and develop the necessary infrastructures to adequately deliver on the full phasing-out of coal within the expected timeframes.


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