...Zhiyong Li; Jiahua Pi; Yuan Cao; Xin Wang With the increasing size and scale of wind turbines, the ripple caused by wind shear may have negative effects on wind turbines, such as decreasing grid-connected power quality and increasing mechanical loss. To address this issue, a virtual dual-ripple...

...Phanisri P. Pratapa; Hieu H. Nguyen; Lance Manuel The generation of wind fields is of interest in the study of the structural performance of wind turbines in critical events, such as thunderstorm downbursts. Various methods ranging from the use of empirical data to employing computational...

... but also to well design it for specific applications without the need to install it on site, accurate computational models that reflect its real behavior should be developed. Aiming to contribute on this matter, this work presents a dynamic model for a solar-wind microgeneration system, which allows...

...Sobhy M. Ghoneam; Ahmed A. Hamada; Taha S. Sherif This article presents a comprehensive study of the dynamic behavior of small vertical-axis wind turbines (VAWTs) based on local fabricated Savonius VAWTs, which is suitable for countries that have a moderate wind speed. The merits of this design...

...Sobhy Ghoneam; Ahmed Hamada; Taha Sherif This article presents a study of modeling and optimization for the dynamic performance of wind turbine composite material blades and investigates the effects of composite material stacking sequence in addition to some design parameters such as twist angle (ɸ...

... 2020 20 06 2020 24 08 2020 swing arm turbine NACA0015 energy extraction oscillating gurney flap efficiency fluid flow wind wind turbine Compared to other natural resources, the renewable energies are able to provide clean energy with acceptable constructive effects...

...Suhil Kiwan; Elyasa Al-Gharibeh; Emad Abu-Lihia We research the investment potential of wind energy in Jordan. The capacity factor of the first large-scale wind farm in the country, Tafila Wind Farm, was found to be 33.1%, based on actual energy production during its first year of operation...

...Davide Astolfi; Francesco Castellani; Francesco Natili Multi-megawatt wind turbines are nowadays a mature technology, and therefore, there is considerable scientific and industrial attention to the opportunity of further improving the efficiency of wind kinetic energy conversion into electricity...

... and frequent power cuts. The island being economically weak, power is inaccessible to most of its residents. Thus, the per unit energy consumption of the area is low and it has led to the lowering of the human development index of the area. However, Sagar Island, owing to its location, has huge solar and wind...

...Matteo Mana; Davide Astolfi; Francesco Castellani; Cathérine Meißner The importance of accurately forecasting the power production of wind farms is boosting the development of meteorological models and their processing. This work is a discussion of different forecast configurations for predicting...

... while solar and wind are worse off. The closest to hydroelectricity is tidal power with an efficiency of 80% input to output. It is currently the foremost source of clean renewable energy, giving us 71% of it i.e., 1.064 TW installed capacity globally, China being the largest contributor (Fig. 8...

... in wind energy calculations. All simulations are solved using the open-source software openfoam v.2.4.0 with a modified k–ε turbulence closure. The forest drag effect is calculated with two models: a displacement height model and a canopy model that estimates the pressure loss due to the forest through...

...Davide Astolfi; Francesco Castellani; Ludovico Terzi The alignment of the wind turbine yaw to the wind direction is an important topic for wind turbine technology by several points of view. For example, the negative impact on power production of an undesired non-optimal yaw alignment can...

...Dara Khalid Khidhir; Soorkeu A. Atrooshi The principle of solar chimney power plant (SCPP) is based on harvesting the thermal spectrum of solar radiation and converting it to mechanical energy by the means of a collector, a wind turbine, and a chimney. In this work, a number of experiments were...

...Haris Ishaq; Osamah Siddiqui; Ibrahim Dincer A new energy system for power, hydrogen and fresh water production is proposed. The environmentally benign ocean thermal energy conversion (OTEC), wind and solar energy resources are utilized. The hybrid thermochemical CuCl cycle is used for hydrogen...

...Yaşar Ostovan; M. Tuğrul Akpolat; Oğuz Uzol This study presents an experimental investigation on the effects of winglets on the near wake flow around the tip region and on the tip vortex characteristics downstream of a 0.94 m diameter three-bladed horizontal axis wind turbine (HAWT) rotor. Phase...

...Davide Astolfi; Francesco Castellani; Andrea Lombardi; Ludovico Terzi The financial sustainability and the profitability of wind farms strongly depend on the efficiency of the conversion of wind kinetic energy. This motivates further research about the improvement of wind turbine power curve...

...David Wenzhong Gao; Xiao Wang; Jianhui Wang; Tianqi Gao; Margareta Stefanovic; Xiangjun Li Advanced and model-based control techniques have become prevalent in modern wind turbine controls in the past decade. These methods are more attractive compared to the commonly used proportional-integral...

.../result/rcn/26927_en.html [20] The Royal Netherlands Meteorological Institute, 2017, “ Wind Speed and Wind Pressure ,” KNMI, Utrechtseweg, The Netherlands, Sept. 27, 2017, http://www.knmi.nl/samenw/hydra/faq/press.html [21] Standardization Administration of the People's Republic of China, 2008...

...Hamid Khakpour Nejadkhaki; John F. Hall A modeling framework to analyze a wind turbine blade subjected to an out-of-plane transformation is presented. The framework combines aerodynamic and mechanical models to support an automated design process. The former combines the National Renewable Energy...