Search

Copyright of Revista de Estudios de la Administración Local y Autonómica is the property of Instituto Nacional de Administracion Publica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article analyzes the Supreme Court ruling of July 11, 2024 on maritime spatial planning in Spain. The controversy between fishing and offshore wind energy in the zoning of these plans is highlighted. The Court considers that the plans do not violate the principle of legality and supports the compatibility between both sectors, seeking sustainable development and the good environmental status of the marine environment. The importance of the coexistence of uses and activities in maritime space is emphasized. [Extracted from the article]

This article underscores the importance of accurate wind speed measurements and highlights the necessity of standardizing anemometers using robust mathematical models to ensure reliable data across a range of fields, including meteorology, wind energy, aviation, and civil engineering. Two classical mathematical modeling methods--the Least Squares Method and Newton's Divided Differences Method--are presented and compared. The paper evaluates the performance of these methods in anemometer standardization, taking into account their practical applications, limitations, and accuracy under varying experimental conditions. Previous studies demonstrating the efficacy of both methods across different domains are referenced. A methodology is proposed for comparing the two approaches through a controlled wind tunnel experiment using a calibrated digital anemometer under diverse flow conditions. The results will enable researchers and practitioners to select the most appropriate method for their specific needs, thereby enhancing the precision and reliability of wind speed measurements in a wide array of applications. In conclusion, the paper aims to provide a comprehensive analysis of the advantages and limitations of the Least Squares Method and Newton's Divided Differences Method in anemometer standardization, ultimately contributing to improved measurement quality in various sectors. [ABSTRACT FROM AUTHOR]

Copyright of Ecología Política is the property of Fundacio ENT and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article in the magazine "Environmental Legal News" presents reviews of various publications related to environmental issues. Topics such as water, climate change, air pollution, environmental law, construction, wind energy, renewable energies, protected natural areas, training, liability for damages, and vehicles are addressed. The authors of the mentioned publications offer analysis and proposals to address different environmental and legal aspects. [Extracted from the article]

The permanent magnet wind turbine is the fundamental element inside small wind turbines with power ratings of less than 3MW. The operation of the internal components of wind turbines is little known by electrical engineers. This work aims to show the dynamic behavior of Permanent Magnet Synchronous Generators types with 3-stage converters. The equations that describe the dynamic behavior of each of the stages that make up the wind turbine are presented, starting with the 3-blade wind turbine, which is one of the most efficient at present, and ending with the passive filter necessary for its synchronization with the power system. Using the obtained dynamic equations, simulations of each stage are made separately and the operation of each of the parts and of the whole are demonstrated. [ABSTRACT FROM AUTHOR]

Hydrogen as an energy vector can provide energy in applications from low to large scale and contributes to the promotion of renewable energies as low-carbon emission alternatives. This paper presents a literature review on hybrid green hydrogen systems. It was found that 23% of the articles review different methodologies and comparisons of hydrogen technologies, 15% present technical, economic and environmental analyses of hydrogen-based systems and projects. Fifty-three percent of the reviewed articles focus on artificial intelligence methodologies and use of commercial software for sizing, energy management and optimization of these models on hybrid renewable energy systems with a high focus on off-grid systems. The potential for simulation models to be developed on this topic is quite large because of the decarbonization brought by hydrogen. The models should consider additional aspects of the entire hydrogen value chain to have a complete vision of its development in Colombia, taking into account the development opportunities in the framework of different energy scenarios. [ABSTRACT FROM AUTHOR]

In the face of a scenario marked by environmental degradation caused by the disorderly use of natural resources, wind energy emerges as a way to pursue development while simultaneously preserving natural resources, without compromising the well-being of current and future generations. Thus, this article aims to conduct an analysis of the evolution and generation of wind energy on a global and national scale, as well as to present the configuration of their electrical matrix, identifying the major wind energy producers. The data indicate that in recent decades, the generation of electrical energy from wind sources has shown vigorous and dynamic growth worldwide. China, in turn, leads the global wind generation scene both onshore and offshore, with Brazil ranking sixth in global production in 2022. Brazil is considered a reference globally due to renewable sources having composed its electrical matrix for many years, with wind energy strongly established in the Northeast of the country a region favored by strong and persistent winds annually. Therefore, it is evident that the wind energy sector has the potential to contribute to the energy transition, reduce socio-environmental disturbances caused by the greenhouse effect, and enhance energy security through reliance on clean energy. [ABSTRACT FROM AUTHOR]

Installing wind farms in isolated power systems can cause issues regarding frequency control. These issues are due to the variable nature of wind and the characteristics of the grid itself. This research analyzed how frequency deviation is affected by distributing multiple wind farms and how to reduce those deviations by leaving active power reserves in the wind farms. Monte Carlo simulations were used, considering various scenarios where wind penetration was gradually increased while leaving fixed and variable power reserves, using fuzzy control for the latter. The results obtained demonstrate that as wind penetration increases, frequency deviations also increase until they violate the Cuban grid code. These deviations were reduced by implementing reserves in the wind farms, with the best results achieved when using variable reserves. [ABSTRACT FROM AUTHOR]

Copyright of Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The proliferation of renewable energy sources and their impact on power systems makes it necessary to conduct studies to ensure the proper operation of the power system. This paper investigates recent research on the impact of renewable energy sources on voltage stability and new methods used to assess this stability. The effects of solar and wind power generation both individually and collectively are studied, along with other inverter models through which renewable energy sources are connected to transmission systems or distribution networks. In addition, the results are highlighted by categorizing them into a deterministic and probabilistic approach. [ABSTRACT FROM AUTHOR]

Copyright of Técnica Industrial: Revista Cuatrimestral de Ingeniería, Industria e Innovación is the property of Fundacion Tecnica Industrial and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ecología Política is the property of Fundacio ENT and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This research presents a review of existing trends in the development of electrical generators for small wind turbines. At present, wind power systems operate at variable orfixed speed, using the principale of direct current generators, induction generators using a gear box system, and synchronous generators, which operate at low wind speeds without a gear box. ,being these the most used in small comercial wind turbines. Both the strengths and weaknesses of existing configurations are discussed, emerging technologies in low-speed electric generators are investigated, and a comparative analysis of the misperformed. The objective of selecting the most suitable generatoror generators for its construction in workshops with minimal technological conditionsto be used in efficient small wind energy systems is fulfilled, and a simple of commercially available wind turbines is presented. [ABSTRACT FROM AUTHOR]

Copyright of Estudios Sociológicos is the property of El Colegio de Mexico AC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This research study proposes a methodology based on data science to estimate the technical feasibility of implementing hybrid solar-wind power systems by calculating the plant factor, also known as capacity factor (CF). Data is gathered from the NOVALYNX 110-WS-18 weather station, between the years 2018 and 2020, to determine the energetic potential available for the Candelaria campus at the La Salle University (Colombia). A k-means data clustering algorithm, developed in Matlab, is applied over the following descriptors: time, solar radiation, wind speed, and temperature. The results show that the photovoltaic and wind power systems have a CF of 36.69% and 2.15%, respectively. It is concluded that it is technically feasible to implement a photovoltaic system at the La Salle University, but not a wind power system as it does not meet the minimum CF required. [ABSTRACT FROM AUTHOR]

At present, the use of electrical generation systems through alternative energy sources is continuously increasing, due to the increase in energy demand, reducing CO2 emissions. In this work, a multilevel single-phase inverter prototype for photovoltaic applications was developed, using the H-bridge topology in cascade with independent direct current sources. Applying the Selective Harmonic Elimination (SHE) technique to determine the appropriate switching angles for the control of a multilevel inverter with low total harmonic distortion (THD). In the conditions of the state of Zacatecas, the main alternative sources of electricity generation are solar energy and wind energy, through the use of power electronic devices with DC/AC inverters (direct current - alternating current), for sources of electricity generation of small, medium and high power, that meet the efficiency, quality and safety requirements established by the Federal Electricity Commission (CFE). [ABSTRACT FROM AUTHOR]

Copyright of H-Industria: Revista de Historia de la Industria Argentina y Latinoamericana is the property of H-Industria, Revista de Historia de la Industria Argentina y Latinoamericana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Iberoamericana de Estudios de Desarrollo is the property of Revista Iberoamericana de Estudios de Desarrollo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The use of the energy potential that the environment provides to man is a challenge for the scientific society in the 21st century. Governments implement strategies to encourage the use of wind farms, photovoltaic cells in solar panels, construction of hydroelectric plants to obtain energy from water, wind energy, geothermal energy, thermosolar energy, bioenergy and marine currents to use them in the network electrical. To achieve this goal, the regulation by the States of legal bodies in the legal systems that provide economic incentives to produce energy from renewable sources with the use of scientific advances to modify the energy matrix, sustainable in harmony with the Millennium Goals for 2030, and achieve the legal paradigm of sustainable development. It is a model to be built in the public policies of the States that consider its implementation. [ABSTRACT FROM AUTHOR]

Copyright of Revista Técnica Energía is the property of Centro Nacional de Control de Energia CENACE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of DYNA - Ingeniería e Industria is the property of Publicaciones Dyna SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article discusses the concern for marine spatial planning in relation to offshore wind energy in the North Atlantic Marine Demarcation (DM NOR) in Galicia, Spain. The strategic importance of offshore wind energy and its potential for economic development and innovation are highlighted. However, the need to balance the interests of different sectors and activities at sea, and to avoid hasty decisions that may generate conflicts, is also raised. The existence of planning documents, such as the Maritime Spatial Planning (POEM) Plan, which seek to regulate the use of marine space, is mentioned, but their normative strength and their ability to adequately address the different interests at stake are questioned. [Extracted from the article]

Copyright of Muuch' Xiimbal. Caminemos Juntos is the property of Universidad La Salle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Several actions have been taken in Uruguay to reduce CO2 atmospheric emissions, including modification of the energy matrix. In recent years more than 90% of electricity was produced by renewable sources, such as wind power, hydro (run-of-river) or biomass. Despite this fact, the building, construction, and transport sectors are still great responsible of the environmental impacts produced by human activities. Moreover, several studies show advances of methodologies that allow the environmental impact calculation and the definition strategies for reduction. Life Cycle Assessment (LCA) is considered one of the most transparent and recognized method by the international scientific community. This study aims to develop a methodology based on LCA, to calculate the environmental impacts produced by timber buildings during their life cycle. The case study verification focuses on “La Casa Uruguaya”, a social single-family timber house. The proposed methodology allows obtaining the environmental impacts of the whole life cycle, from the detailed design stages of design. Results show the relevance of the use stage (energy consumption, maintenance, repair, refur-bishment and replacement) and product stage (raw material, manufacture and transport) compared to the rest of the life cycle stages included in the study. [ABSTRACT FROM AUTHOR]

The International Center for Environmental Law Studies (CIEDA) has collaborated in the publication of a book titled "Law and Renewable Energies", edited by Thomson Reuters - Aranzadi. The book includes chapters written by experts in renewable energy, climate change, and energy transition. The chapters address topics such as the legal framework for renewable energy, regional frameworks on climate change, geothermal energy, alternative and renewable fuels, among others. It also mentions another research project on the regulation of clean energy and the climate emergency, which includes chapters on energy transition, wind and photovoltaic energy, and electricity storage regulation, among other topics. [Extracted from the article]

The Superior Court of Justice of Galicia has dismissed an administrative appeal against Decree 242/2007 of the Ministry of Innovation and Industry of the Xunta de Galicia, which regulates the use of wind energy in the region. The appeal argued several reasons, such as the lack of strategic environmental assessment and the absence of an economic report on the project of the regulation. However, the Court considered that all provisions of the Decree are legal and in accordance with applicable regulations. This type of challenges are common in the wind energy sector and usually based on the lack of environmental assessment and economic report. [Extracted from the article]

Renewable energies are currently considered as a tool for mitigating climate change. Therefore, wind energy corresponds to one of the methods that provides energy in a clean way, using different models of wind turbines, allowing to identify strategic points from obtaining variables such as wind speed, location, and models, through the which can reduce the negative impact generated by conventional energies. Therefore, to properly take advantage of this type of energy it is important to identify the municipalities that meet the appropriate speed ranges, in addition to the analysis of the area that allows establishing the appropriate generators so as not to alter the balance of the ecosystem contributing to environmental mitigation, partne r - economical. [ABSTRACT FROM AUTHOR]

The search for sustainable and sustainable actions, points its efforts in the use of renewable energies. Wind energy is one of these, which are used in different parts of the world; Europe has appropriated its use by strengthening the value chain. Colombia is embarking on its implementation, but it is in the initial phase. In Quindío, there are no references for the use of wind energy. This project proposes to design and build a vertical type wind turbine to generate electrical energy in Tecnoacademia in Armenia; implement a software for the physical modeling of air flow, turbulence, heat transfer, that allow the industrial applications of the prototype, extending its usability to the business sector of the region. [ABSTRACT FROM AUTHOR]

Copyright of Ingeniería (0121-750X) is the property of Ingenieria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Études Caribéennes is the property of Etudes Caribeennes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of DYNA - Ingeniería e Industria is the property of Publicaciones Dyna SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The growing worldwide energy demand requires the design and construction of increasingly efficient generation systems. In satisfying this need, control schemes play an essential role. Having a system that allows experimental evaluation of their performance is key. In the case of wind energy, one possible control strategy is pitch regulation, which is used in variable pitch wind turbine systems. This paper presents the results of the design and construction of a testing bench for carrying out the experimental evaluation of control strategies for pitch regulated small wind turbines. Rotor operation and pitch regulation were ascertained through wind tunnel testing. Rotors start moving with winds of 3.5 m/s. PI and fuzzy controllers were implemented and tested. [ABSTRACT FROM AUTHOR]

Copyright of Revista Iberoamericana de Turismo is the property of Revista Iberoamericana de Turismo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of DYNA - Ingeniería e Industria is the property of Publicaciones Dyna SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article offers information on the offshore wind energy in the proposals of marine spatial planning in the Canary Islands. Topics discussed include new emerging sector, which had the firm support of European policies to achieve energy consumption from renewable sources; location of wind farms far from the coast benefits from stronger and more stable winds; and floating platforms reduce installation and maintenance costs, and allow wind farms to be located over depths.

We propose an analysis of the socio-economic and energy composition of Argentine households to provide information for defining solar energy development policies with an inclusive and social development perspective. To do this, we apply clustering methods and an analysis of big data (in particular k-means, two-step cluster, and an analysis of the main factors) in a database containing data from the National Institute of Statistics and Censuses, National Ministry of Energy, National Gas Regulatory Entity, Solar and Wind Energy Resource Assessment and National Renewable Energy Laboratory. As a result, households are revealed that share similar problems regarding access to energy and other fundamental rights, the impact of the cost of energy, and available solar resource. These groups have been mapped at the census tract level, the smallest geographic and analytical unit of the Argentine census. We conclude by defining action perspectives for the energetic and socially inclusive development of each of the groupings of rural and urban households. [ABSTRACT FROM AUTHOR]

Copyright of Lecturas de Economia is the property of Universidad de Antioquia, Facultad de Ciencias Economicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mexican Journal of Economics & Finance / Revista Mexicana de Economia y Finanzas is the property of Instituto Mexicano de Ejecutivos de Finanzas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The present work addresses the current situation of apparent conflict of interests between the installation of wind farms as a strategic and environmental commitment in the European Union's energy policy and the protection of environmental values in the spaces and environments of the Network Natura 2000, usual places where they are located due to the technical characteristics of wind energy. The normative evolution of the environmental assessment regime of the repercussions of wind farms in the places of the socalled European ecological network is analyzed in detail, from the Habitats Directive 92/43 / EEC until its incorporation in the current Heritage laws 42/2007 Natural and biodiversity, and 21/2013 of environmental evaluation, as well as the recent judicial pronouncements of the various instances until reaching the Supreme Court, and that have resulted in contradictory sentences on the installation of wind farms both in their doctrine and in their judicial decisions which also represent a worrying change in the application of the principles of legal certainty and technical discretion of the Administration. The Public Administrations competent in the authorizations of wind farms as well as the electricity companies promoting them are confused to the cancellation of authorizations of relevant wind farms in operation, sometimes also applying, based on an a priori trial, an erroneous doctrine related to the "fragmentation" of parks against their own environmental and electrical regulations, and without the judicial bodies clearly marking the path of how the "adequate environmental assessment" of them should be implemented in practice. The legal reason for all this is the existence of numerous "undetermined legal concepts" in the application to wind farms of the provisions of the evaluation regulations on the Natura 2000 Network, offering in the present work interpretive solutions to each of them and proposing the necessary unit of judgment of the judicial organs in order to the necessary compatibility of both constitutional assets and interests. [ABSTRACT FROM AUTHOR]

Introduction: Wind energy has grown rapidly in the last 20 years and sites to install full-scale wind farms are starting to run out. Small-scale wind turbines represent a feasible alternative, particularly in forested areas of low wind potential and high turbulence. Objective: to present a review of the aerodynamic profiles for small-scale wind turbines, to determine their possible application in wooded areas. Materials and methods: a review of smallscale horizontal axis wind turbines is carried out using the Web of Science and Scopus databases mainly on the journals: Energy, Wind Engineering and Industrial Aerodynamics, Renewable and Sustainable Energy Reviews, and Renewable Energy. A classification of three large groups is defined for the aerodynamic profiles: very frequent use, medium frequency use and low frequency use. Results: the profiles of very frequent use are the SG6043, S809 and NACA0012, the first of them is the one having the best aerodynamic performance. Despite this, other profiles such as the SH3055 are widely used in the small-scale wind turbine field. Conclusions: a suitable profile for a smallscale wind turbine for forested areas should be designed for stall regulation and have low sensitivity against changes in surface roughness. The profile with the greatest potential, according to the literature for this application, is the SG6043, being 110% y 85% more efficient than NACA002 and S809, respectively, for a Re of 2 x 105; however, more research is required on issues such as aerodynamic performance of the profiles at high levels of turbulence. [ABSTRACT FROM AUTHOR]

This paper presents a multivariate UPD estimator, family member [A,U,T] with parameters p and s, which allows to calculate simultaneously parameters of Weibull K and C at a point Pe from the measured values of these variables in several sampling points. During the 3D estimation, the spatial relationship between the data and the associated values of elevation and roughness of the terrain is taken into account; with the estimated results, a model of wind energy resources is developed, given by a 3D mesh where to each node is associated the values of K and C. Finally, a method of combinatory optimization is described to find the values of p and s such that the mesh model is feasible and optimal for the given data. [ABSTRACT FROM AUTHOR]

In order to develop strategies to maximize the utilization of wind power, it is necessary to have reliable models to simulate wind turbines' responses. Manufacturers have detailed models, though these are "black box", which makes them unusable even in new designs. Thus, so-called generic models have proliferated. Under this approach, this article presents dynamic modeling for a three-bladed rotor in a wind turbine using Euler-Lagrange formulation. For this analysis, the rotor is described as a multibody system with four degrees of freedom using simplified transformation matrices. The details of how the model was obtained and the interpretation of its three-dimensional (3D) simulation are presented using diverse conditions, which guarantees that the model's reliability can be easily verified. [ABSTRACT FROM AUTHOR]