scholarly journals Contemporary wind generators

2015 ◽  
Vol 26 (3) ◽  
pp. 116-124 ◽  
Author(s):  
Udochukwu Bola Akuru ◽  
Maarten J. Kamper
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Energy ◽  
Sustainable Energy ◽  
Research Trends ◽  
Ecological Sustainability ◽  
Rapid Rate ◽  
Employment Creation ◽  
Wind Generators ◽  
New Research

It is believed that wind energy is growing at a very rapid rate, especially in the last few years. When compared with other sources of renewable energy in the energy portfolio, it becomes evident that the bulk is wind energy-based. However, there are some backlogs to full manifestation of this technology ranging from initial high cost to performance and reliability issues, among others. But in spite of these bottlenecks, new research trends have been assertive in seeking out a sustainable solution for harnessing wind energy for power generation – especially in the design and construction of wind generators. In order to motivate and prime a sustainable energy mix among stakeholders, this paper is a shot at appraising the theory of these innovative wind generators towards ecological sustainability, economy, efficiency, and employment creation.

Comparison of Voltage Regulation of a Smart Load for 3 Bus System and 15 Bus System under High Penetration of Wind Energy System

2021 ◽  
Vol 9 (11) ◽  
pp. 1625-1635
Author(s):  
Sharmini Nakkela
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Energy ◽  
Energy System ◽  
Voltage Regulation ◽  
Energy Sources ◽  
Renewable Power ◽  
High Penetration ◽  
Renewable Power Generation ◽  
Bus System

Abstract: Modern study about utilizing energy from renewable energy sources was stimulus due to emerging oil crisis in older days due to uncontrolled use of conventional energy sources. Renewable Power Generation from wind and solar energy has become a significant proportion for the overall power generation in the grid. High penetration of Renewable Power Generation (RPG’s) effectreliable operation of bulk power system due to fluctuation of frequency and voltage of the network. The main objectives of high penetration of Renewable Power Generations in distribution system are Regulation of voltage, Mitigating voltage fluctuations due to flickers and Frequency control. The design and control of voltage regulation system using smart loads (SL’s) under large penetration of renewable energy system in distribution level is to be studied with the help of FACT devices like Static Compensator (STATCOM) and It is one of the fast active devices with accurate voltage regulation capability and most importantly for the sensitive/critical loads. Electric spring (ES) is proposed as compelling technique for guideline of framework voltage under fluctuating RPG's with next to no guide of correspondence framework [1]. It is a converter-based framework with self-commutated switches in span design, which is associated with non-basic burdens in series to go about as savvy load. These Smart Loads are controlled to direct voltage across basic burdens and hence partaking popular side administration. Expanded entrance of RPG’s, basically factor speed wind energy transformation framework is having impact on voltage and power quality [1][2]. In this paper, A contextual analysis of impact of variable speed wind energy framework on voltage is completed and which is demonstrated with fluctuating breeze speed. Execution examination of keen burdens are to be contrasted and existing receptive power compensator burdens and Improvement in voltage profile on test feeder is directed on a 3 Bus system and 15 Bus system. Keywords: Renewable energy system (RES), Electric spring (ES), STATCOM, Voltage Flicker, Smart load

Going Green to Stay in the Black: Transnational Capitalism and Renewable Energy

2011 ◽  
Vol 10 (1) ◽  
pp. 41-59 ◽  
Author(s):  
Jerry Harris
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Environmental Sustainability ◽  
Social Transformation ◽  
Energy Use ◽  
Sustainable Energy ◽  
Political Rhetoric ◽  
Fair Treatment ◽  
Green Capitalism ◽  
Global Patterns

AbstractSustainable energy use is rapidly developing, often with state support and patriotic political rhetoric. But the solar and wind energy industries are highly transnationalized and already inserted into global patterns of accumulation. While possibly solving some of the most pressing problems between capitalism and environmental sustainability, green capitalism still fails to address the contradiction between labor and capital. Therefore, any progressive strategy for social transformation must link the fair treatment of nature and labor together.

scholarly journals Power Converters in Power Electronics: Current Research Trends

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 654
Author(s):  
Minh-Khai Nguyen
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Power Electronics ◽  
Electric Vehicles ◽  
Power Converters ◽  
Energy Systems ◽  
Research Trends ◽  
Pulsed Power ◽  
Renewable Energy Systems

In recent years, power converters have played an important role in power electronics technology for different applications, such as renewable energy systems, electric vehicles, pulsed power generation, and biomedical [...]

Going green to stay in the black: transnational capitalism and renewable energy

Race & Class ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 62-78 ◽  
Author(s):  
Jerry Harris
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Environmental Sustainability ◽  
Social Transformation ◽  
Energy Use ◽  
Sustainable Energy ◽  
Political Rhetoric ◽  
Fair Treatment ◽  
Green Capitalism ◽  
Global Patterns

Sustainable energy use is rapidly developing, often accompanied by state support and patriotic political rhetoric. But the solar and wind energy industries are highly transnationalised and already inserted into global patterns of accumulation. This article argues that, while possibly resolving some of the most pressing conflicts between capitalism and environmental sustainability, green capitalism nevertheless fails to address the contradiction between labour and capital. Therefore, any progressive strategy for social transformation must link together the fair treatment of both nature and labour.

A Feasibility Study on Hybrid Use of Ocean Renewable Energy Resources Around Japan

2013 ◽  
Author(s):  
Tomoki Taniguchi ◽  
Shigesuke Ishida ◽  
Yoshimasa Minami
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Energy ◽  
Energy Resource ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Japanese Coast ◽  
Ocean Renewable Energy ◽  
Resource Needs ◽  
Sea Area

This paper addressed assessing feasibility of hybrid use of ocean renewable energy, such as wave and wind energy around Japanese coast. At first, wave and wind energy theoretical potentials were calculated and, in the second step, correlation coefficient between wave and wind energy was computed around Japanese coast. Sea area suitable for hybrid use of ocean renewable energy resources is supposed to have high potential for some types of energy resources. Furthermore, correlation of power generation between wave and wind energy resources should be low because one energy resource needs to complement another one for stabilizing power generation. Based on the assumptions, feasibility of wind and wave energy was evaluated on some sea areas where R&D project are ongoing.

scholarly journals Hybrid Solar and Wind Power Generation in Saudi Arabia

2020 ◽  
Vol 10 (2) ◽  
pp. 25
Author(s):  
Omar S. Alzaid ◽  
Basharat Salim ◽  
Jamal Orfi ◽  
Salah Khan ◽  
Hassan Alshehri
Keyword(s):  
Power Generation ◽  
Saudi Arabia ◽  
Renewable Energy ◽  
Power System ◽  
Wind Energy ◽  
Energy Systems ◽  
Energy System ◽  
Storage Devices ◽  
Hybrid Energy ◽  
Energy Flows

Solar and wind energy systems are attractive hybrid renewable energy systems suitable for various applications and most commonly for power generation. Compared to standalone wind and solar devices, hybrid systems have several advantages, including requiring lesser or no storage devices, being more reliable, damping the daily and seasonal variations and ensuring constant energy flows. This work aims to conduct a feasibility study and a performance analysis of a hybrid wind and solar photovoltaic (PV) power system in selected regions in the Kingdom of Saudi Arabia (KSA). A detailed review on the potential of PV, wind energy and hybrid energy systems in KSA, to reason out the potential areas of study, has identified two sites to be selected to carry out the investigation. A small size power system driven by solar and wind energy has been modeled and simulated for a year period in the selected locations. Various configuration schemes of integrated solar and wind with storage devices for such a small capacity system have been proposed and their respective performances have been evaluated. Techno-economic aspects have been included. The simulation results indicated that the developed model shows a promising future of implementing the renewable energy system in the eastern and southern regions of the Kingdom. 

Environmental criteria for site selection of wind power projects in South Korea

2020 ◽  
Author(s):  
Jong-Yoon Park ◽  
Young-Joon Lee
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
South Korea ◽  
Wind Energy ◽  
Wind Power ◽  
Site Selection ◽  
Large Scale ◽  
Developed Countries ◽  
Onshore Wind ◽  
Environmental Criteria

<p>Wind energy represents the leading source of renewable energy in many developed countries. South Korea has recently introduced large-scale programs to promote the transition from fossil fuels and nuclear power to renewable energy as a source of power. The Korean government has set an energy policy goal to increase the ratio of renewable energy to 20% by 2030. To this end, it is necessary to supply renewable energy facilities with a total capacity of 48.7GW including 30.8GW of photovoltaic power generation and 16.5GW of wind power generation by the target year. Accordingly, we should plan now for the regulation of the location to meet this developing need. However, in South Korea, forests cover 63% of the country's land area so that there is a limit to find a location for the installation of large-scale power generation facilities without occupying forest lands. For example, it is mainly located in forests or farmlands where land costs are relatively low, resulting in a decrease in forest resources and negative impacts on ecosystems and landscapes. Renewable energyexpansion planning should ensure that environmental criteria, of the type outlined in this study, are given appropriate considerations in onshore wind power project site selection. Many of the more problematic wind power sites are best left mountainous forest under the natural conditions, because the environmental or related social impacts are likely to be unacceptably high. Obviously, no plans are likely to be more environmentally desirable in those cases. The alternatives for onshore wind power siting considered the environmental criteria to achieve the goal of wind energy will be suggested.</p>

Climatological Analysis of the Potential of Solar and Wind Energy in Germany

2020 ◽  
Author(s):  
Jaqueline Drücke ◽  
Michael Borsche ◽  
Paul James ◽  
Frank Kaspar ◽  
Uwe Pfeifroth ◽  
...  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Solar Radiation ◽  
Wind Energy ◽  
Temporal Resolution ◽  
Wind Turbines ◽  
Energy Production ◽  
Power Production ◽  
Weather Regimes ◽  
Renewable Energy Production

<p>Renewable energies, like solar and wind energy, play an important role in current and future energy supply in Germany and Europe. The renewable energy production highly depends on weather, which leads to an increasing impact of the meteorological fluctuations on energy production.</p><p>Here, climatological datasets with high spatial and temporal resolution are used to simulate the electrical energy production from photovoltaic (PV) installations and wind turbines. For the solar radiation the CM SAF SARAH 2.1 dataset is used, which includes global and direct radiation with a temporal resolution of 30 minutes and a grid spacing of 0.05°. The data is available from 1983 to 2017. The regional reanalysis COSMO-REA6 provides hourly wind speed data from 1995 to 2015 with a spatial resolution of 6km. Based on these datasets capacity factors are calculated for PV and wind energy for Germany. Using the spatial distribution of solar panels and wind turbines as well as electrical power generation data from 2015 the simulated capacity factors were converted into (potential) hourly power generation in Germany from 1995 to 2015. </p><p>The main aim of this study is to identify weather regimes where renewable energy production from solar and wind was comparable low. Due to high power production from solar radiation, which exhibits a comparable low variability and high predictability, in summer, all low production events occur in winter. During winter, wind power is the main contributor to renewable energy production. On the basis of the hourly time series of simulated power production the weather regimes that are associated with multiple days of low renewable energy production are identified and analysed. European regions are identified that exhibit comparably high potential renewable power production for those weather regimes with low energy production in Germany.  </p>

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