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Aplicações de controle vetorial e análise da robustez em motores de indução trifásicos com atraso no controle
(Universidade Estadual Paulista (Unesp), 2018-11-27)
O foco principal deste trabalho é a investigação de métodos de controle capazes de rejeitar perturbações, incertezas e influências degenerativas do atraso no problema referente ao controle vetorial por campo orientado do ...
Stationkeeping controllers for Earth–Moon L1 and L2 libration points halo orbits
(2021-07-01)
This paper considers the dynamics of the circular restricted three-body problem (CRTBP) for the Earth–Moon system designing stationkeeping controllers at periodic orbits. Taking into account the L1 and L2 equilibrium points ...
Optimal reconfiguration of electrical distribution systems using mathematical programming
(2014-01-01)
This paper presents a novel mixed integer nonlinear programming (MINLP) model for the reconfiguration problem of electrical distribution systems (EDS), aiming to reduce the active power losses of the system. Two linearization ...
Controle Chaveado de Sistemas Não Lineares com Incertezas utilizando Funções de Lyapunov Não Quadráticas
(Universidade Estadual Paulista (Unesp), 2021-02-12)
Esse trabalho propõe um novo método de controle chaveado robusto de sistemas não lineares com incertezas descritos por modelos fuzzy Takagi-Sugeno, que utiliza várias matrizes simétricas positivas definidas. É verificado ...
Unified AC transmission expansion planning formulation incorporating VSC-MTDC, FACTS devices, and reactive power compensation
(2023)
The main aim of the static Transmission Network Expansion Planning (TNEP) is to determine which and where new transmission equipment must be installed. The complexity added by the non-linearities leads to simplifications, ...
VAr planning using genetic algorithm and linear programming
(2001-05-01)
A combined methodology consisting of successive linear programming (SLP) and a simple genetic algorithm (SGA) solves the reactive planning problem. The problem is divided into operating and planning subproblems; the operating ...
Modeling, control and experimental validation of a novel actuator based on shape memory alloys
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
The paper presents the development of a mechanical actuator using a shape memory alloy with a cooling system based on the thermoelectric effect (Seebeck-Peltier effect). Such a method has the advantage of reduced weight ...
Nonlinear analysis of inter-area oscillations: Effect of SVC voltage support
(2007)
The optical energy gap of Ge1-x Snx alloys (x?0.14) grown on Ge substrates has been determined by performing transmittance measurements at 4 K using a fast fourier transform infrared interferometer. The direct energy gap ...