This work is based on the development and improvement of methodologies for the best representation of the electrical grounding under a transient analysis.
Este trabalho fundamenta-se no desenvolvimento e aprimoramento de metodologias para a melhor representação do aterramento elétrico sob uma análise transiente.
...The studies were conducted to evaluated different additives on the performance, nutrients digestibility, carcass/parts yield and intestinal morphology. The supplementation of phytase and amylase, protease and xylanase in diets with reductions of nutrients promoved increase on the performance and nutrients digestibility (dry matter, protein, digestible energy). Supplementation of betaine promoted positive birds submit...
...This work presents a proposal to represent of electrical grounding systems directly in time domain, taking into account the benefits in frequency domain modelling, without employing inverse Laplace or Fourier transforms. The time domain models are easily inserted in conventional electromagnetic transient software, where voltages and currents are better understood. The main contribution of this work is the development of a technique that can represent grounding by discrete and positive circuits elements (R-resistors...
...o pre-conditioners were used, but in their sequential version and running in the CPU, which yielded a hybrid CPU-GPU implementation. The developed computational tools were tested in the simulation of electrical grounding systems. In the case of the harmonic regime, in which the phenomenon is governed by the driven, lossy wave equation, the formulation adopted was that in two potential, the ungauged edge A-V formulati...
...a sua versão sequencial, com execução na CPU, resultando em uma implementação híbrida CPU-GPU. As ferramentas computacionais desenvolvidas foram testadas na simulação de problemas de aterramento elétrico. No caso do regime harmônico, em que o fenômeno é regido pela Equação de Onda completa com perdas e não homogênea, a formulação adotada foi aquela em dois potenciais, A-V aresta-nodal. Em todas as situações, os aplicativos desenvolvidos para GPU apresentaram speedups apreciáveis, demonst...
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