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Adaptive Sampling Frequency Synchronized Reference Generator for Grid Connected Power Converters
(Communications in Computer and Information Science, 2019)
Malhas de amostragem retangular e hexagonal na geração de mapas de fertilidade e aplicação para agricultura de precisão
(Universidade Federal de Santa MariaBRTecnologia em Agricultura de PrecisãoUFSMPrograma de Pós-Graduação em Agricultura de Precisão, 2016-09-15)
Sample grid s are essential when we want to represent the variation in chemical and physical properties of the soil, being essential to know its features. In this way, this study aimed to relate the efficiency and practicality ...
Espaçamento do grid e número de subamostras na coleta de solo com agricultura de precisão
(Universidade Tecnológica Federal do ParanáDois VizinhosBrasilManejo da Fertilidade do SoloUTFPR, 2016-12-19)
The objective of the present work was to evaluate the spacing of the sampling grid and number of subsamples in the quality of the soil collection in an area under precision agriculture. The work was carried out in the ...
Grid Impedance Detection Based On Complex Coefficient Filter and Full-order Capacitor Current Observer for Three-phase Grid-connected Inverters
(2023-02-01)
This article proposes a new grid impedance detection method incorporating the complex coefficient filter (CCF) with full-order capacitor current observer for a T-type three-level grid-connected inverter controlled by the ...
Avaliação do desempenho de recursos energético distribuídos conectados à rede sob diferentes condições de impedância de rede
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2021-12-17)
This work aims to evaluate the performance of Distributed Energy Resources of Grid-Connected Photovoltaic Systems when inserted in different grid impedance conditions. For this purpose, first a brief literature review was ...
Variable, fixed, and hybrid sampling period approach for grid synchronization
(Elsevier Science Sa, 2017-03)
Almost all synchronization methods that can be found in the literature are based on a fixed sampling period approach and implemented by the addition of filter stages to the conventional Synchronous Reference Frame Phase ...
Eficiência de grades amostrais e zonas de manejo na acertividade da correção e fertilização em área de agricultura de precisão consolidada
(Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Agronomia - Agricultura e Ambiente, 2016-02-17)
Soil samples from sampling grids is currently the leading precision farming tool used in Brazil. But it still has doubts about the economic feasibility of using grids with high density points. New technologies such as the ...
Methodology to determine the soil sampling grid for precision agriculture in a coffee field
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2017-01-01)
The objective of this study was to develop and propose a methodology to evaluate the quality of different sampling grids. In addition, it allows us to choose the sampling grid that better suits one or a set of variables. ...
Evaluation of three different osteosynthesis methods for mandibular angle fractures: Vertical load test
(2016-01-01)
The aim of this study was to evaluate the mechanical behavior of different rigid fixation methods in mandible angle fractures. Three different plates were tested: one 4-hole grid miniplate, one 8-hole curved grid miniplate, ...
Photometric Observations of Grid Giant Star Survey Candidates
(2004)
We compare variability of radial velocity (RV) and brightness for a sam-ple of red giants which were selected as candidates for the Grid Giant StarSurvey (GGSS). The purpose of the survey is to select astrometrically sta-ble ...