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Crowbar System in Doubly Fed Induction Wind Generators
(MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI, 2010)
In the last 15 years, the use of doubly fed induction machines in modern variable-speed wind turbines has increased rapidly. This development has been driven by the cost reduction as well as the low-loss generation of ...
Thermal regulation of secondary dormancy induction in Polygonum aviculare seeds: A quantitative analysis using the hydrotime model
(Cambridge University Press, 2017-09)
For seed banks showing seasonal changes in their dormancy level, the possibility of predicting temporal patterns of emergence depends on establishing a robust relationship between temperature and the rate of dormancy loss ...
Geochemical analysis of vitreous rocks exploited during the formative period in the Atacama Region, Northern Chile
(2009)
Petrographic analysis and geochemical characterization studies were carried out on vitreous dacite and/or rhyodacite artefacts from Formative period archaeological sites in the upper Salado River Basin in the Atacama Desert, ...
Use of didactic material through the application of the inductive method for the process and development of reading and writing skills of the English subject in the students from the last three years of high school, unidad educativa El Oro, Machala city, academic period 2014 - 2015.
(2015)
Actualmente, es importante aprender el lenguaje Inglés debido a que tenemos muchas posibilidades de trabajar o viajar a otras partes del mundo, por esta razón éste ha llegado a ser una herramienta importante para la ...
Factors and outcomes associated with the induction of labour in Latin America
(Wiley-blackwellHobokenEUA, 2009)
Colossoma macropomum females can reproduce more than once in the same reproductive period
(2018-09-01)
The aim of the present study was to evaluate induced reproduction in Colossoma macropomum females at the beginning of the reproductive period and 75 days after the first spawning in which reproduction was induced. The ...
A Power-Quality Index to Assess the Impact of Voltage Harmonic Distortions and Unbalance to Three-Phase Induction Motors
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
This paper discusses the need to simultaneously monitor voltage unbalance and harmonic distortions in addition to root-mean-square voltage values. An alternative way to obtain the parameters related to voltage unbalance ...
Induction Motor Driven by a CAMC Using Predictive Control
(Institute of Electrical and Electronics Engineers, 2014-08)
This work presents a control strategy for an induction motor fed by a Cascade Asymmetric Multilevel Converter (CAMC). The approach is based on the Finite-States Model Predictive Control technique and uses the dynamic motor ...