Anzeige der Dokumente 1-12 von 12

    • Optimal Control Development System for Electrical Drives 

      Găiceanu, Marian; Roşu, Emil; Păduraru, Romeo; Dache, Cristinel ("Dunarea de Jos" University of Galati, 2008)
      In this paper the optimal electrical drive development system is presented. It consists of both electrical drive types: DC and AC. In order to implement the optimal control for AC drive system an Altivar 71 inverter, a ...
    • The Appoach for Optimization of Transmission Over Power Links Using the Thyristor-Controlled Series Compensation 

      Gherbi, Fatima Zohra (The Annals of "Dunarea de Jos" University of Galati, 2008)
      The energy transportation networks can be improved by multiplying or creating new lines. This is not always the case for various reasons. The series capacities controlled by SCRs (Silicon Controlled Rectifiers) represent ...
    • Modelling and Simulation of Static Var Compensator(SVC) in Power System Studies by Matlab 

      Boudjelia, Houari; Gherbi, Fatima Zobra; Lakdja, Fatiha ("Dunarea de Jos" University of Galati, 2008)
      This paper presents the modelling and simulation of Static Var Compensator (SVC) in power system studies by MATLAB. In the first step, we have modeled mathematically with MathCAD how to analyze the rating of SVC (Boudjella, ...
    • Multivariable Intelligent Control for M.A.G. Welding Process 

      Miholcă, Constantin; Nicolau, Viorel; Munteanu, Cristian; Mihăilescu, Dănuţ ("Dunarea de Jos" University of Galati, 2008)
      A neural control technique, applied to the MAG (Metal-Active Gas) welding process, is presented in the paper. The static nonlinear model of welding process is based on experimental determinations. The geometric parameters ...
    • An Efficient DC-DC Converter with Bidirectional Power Flow 

      Rajarajeswari, N.; Thanushkodi, K. ("Dunarea de Jos" University of Galati, 2008)
      This paper introduces a Bi-directional DC-DC converter with adaptive fuzzy logic controller. Bidirectional power flow is obtained by same power components and provides a simple, efficient, and galvanically isolated ...
    • Mathematical Modeling and Simulation Photovoltaic Converter Operation When Varying Parameters 

      Constantin, Miholcă; Munteanu, Cristian; Nicolau, Viorel ("Dunarea de Jos" University of Galati, 2008)
      The paper presents a method of mathematical modelling of a solar converter using the results of full-scale testing. The advantages of analytical modelling method applied to photovoltaic systems are also presented; this ...
    • An Algorithm for Thresholding in the Context of Signal Denoising with Wavelets 

      Gogu, Anisia; Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2008)
      The problem of estimating a signal corrupted by additive noise has been of interest to many researchers for practical as well as theoretical reasons. Wavelet based methods have become increasingly popular, due to a number ...
    • Optimal Convex Controller and Model Reduction for a Dynamic System 

      Khuntia, P. S; Mitra, Debjani ("Dunarea de Jos" University of Galati, 2008)
      This paper presents analysis and design of a family of controllers based on numerical convex optimization for an aircraft pitch control system. A design method is proposed here to solve control system design problems in ...
    • Fast Acting Robust Controller for Pitch Control System 

      Khuntia, P.S.; Mitra, Debja ("Dunarea de Jos' University of Galati, 2008)
      In this paper a classical feedback controller has been designed to furnish fast acting characteristics in the face of parametric perturbation using two parameters, Generalized Time Constant and Characteristic Ratios. The ...
    • Strategies Used for Developing Micro-CCHP Structures in Residential and Public Buildings 

      Badea, Nicolae ("Dunarea de Jos" University of Galati, 2008)
      The current paper deals with the efficient use of the fossil fuels in the context of DER/DG concept through a unitary approach of the necessary electrical power and thermal energy of an urban residential quarter and ...
    • MPPT Algorithm for Small Wind Systems Based on Speed Control Strategy 

      Vlad, Ciprian; Ceangă, Emil ("Dunarea de Jos' University of Galati, 2008)
      This paper presents experimental results of an autonomous low-power wind energy conversion system (WECS), based on a permanent-magnet synchronous generator (PMSG) connected directly to the wind turbine. The purpose of ...
    • Estimation of Steel Solidified Layer Thickness, for Continuous Casting Control Purposes 

      Munteanu, Mihai; Ceangă, Emil (2008)
      An important goal in continuous casting automation process rest in establishing a proper casting speed being able to assure a compromise between machine productivity and solidified skin cracking protection on the mould ...