Now showing items 11-20 of 1141
Rastreamento do ponto de máxima potência de turbinas magnus acionando geradores elétricos
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2014-01-24)
The constant human need for electricity, as well as the increasing demand for energy causes the use of finite sources, as oil and coal. The search for alternative energy sources as wind harvesting is the motivation for ...
A composite beam finite element for multibody dynamics: Application to large wind turbine modeling
This work presents a beam finite element with multibody capabilities for modeling high aspect ratio composite wind turbine components, particularly the tower and the blades. The proposed formulation is based on an Updated ...
Erosion-fatigue of steam turbine blades
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
The premature failure of steam turbine rotor blades, manufactured in forged 12% Cr-NiMoV martensitic stainless steel, was investigated using visual inspection non-destructive testing, macro and microfractography, microstructural ...
Thermodynamic analysis and comparison of downdraft gasifiers integrated with gas turbine, spark and compression ignition engines for distributed power generation
(Elsevier B.V., 2014-05-01)
The objective of the present article is to assess and compare the performance of electricity generation systems integrated with downdraft biomass gasifiers for distributed power generation. A model for estimating the ...
High Order Recurrent Neural Control for Wind Turbine with a Permanent Magnet Synchronous Generator
(Revista Computación y Sistemas; Vol. 14 No. 2, 2010-12-15)
Abstract. In this paper, an adaptive recurrent neural control scheme is applied to a wind turbine with permanent magnet synchronous generator. Due to the variable behavior of wind currents, the angular speed of the ...
Evaluating the effects of high penetrations of roof-top wind Turbines on secondary distribution circuits
Incentives for using wind power and the increasing price of energy might generate in a relatively short time a scenario where low voltage customers opt to install roof-top wind turbines. This paper focuses on evaluating ...
Modeling and robust control of a twin wind turbines structure
(Pergamon-Elsevier Science Ltd, 2017-12)
The control of a new structure of twin wind turbines (TWT) is presented in this paper. This new concept includes two identical wind turbines ridden on the same tower, which can pivot face the wind with no additional actuator. ...
Analysis of the performance of an extraction-condensation steam turbine on a cogeneration system of a Brazilian sugar-alcohol factory
(Natl Technical Univ Athens, 2014)
Thermoeconomic functional analysis applied in cogeneration systems associated to cellulose plants
Thermoeconomic Functional Analysis is a method developed for the analysis and optimal design of improvement of thermal systems (Frangopoulos, 1984). The purpose of this work is to discuss the cogeneration system optimization ...