Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați: Recent submissions
Afișează articolele 1281-1300 of 1845
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Descriptive Mining for the QSAR Problem
("Dunarea de Jos" University of Galati, 2005)There are several approaches in trying to solve the Quantitative Structure-Activity (QSAR) problem. These approaches are based either on statistical methods or on predictive data mining using neural networks. Among the ... -
Pedagogical Knowledge Model Based on Conceptual Graphs and Ontology
("Dunarea de Jos" University of Galati, 2005)Intelligent educational systems are knowledge-based systems (KBS) they can be developed by a generic knowledge-based system development methodology. In this paper, we present an ontology-based approach for formalizing ... -
Development of a Simulink Toolbox for Friction Control Design and Compensation
("Dunarea de Jos" University of Galati, 2005)This paper focuses on the development of a MATLAB/Simulink® library for servo-systems with friction as a part of a new simulation platform dedicated to model, analysis and control design of friction. It is well known that ... -
Multilevel Inverter Based Statcom for Power Quality Enhancememt in Multi bus System
("Dunarea de Jos" University of Galati, 2010)This paper deals with simulation of STATCOM in multi bus system for power quality enhancement. The unique structure of the multi level voltage source inverter (VSI) permits it to attain high voltages with low harmonic ... -
A New Numeral Calculus Solver-Numerical Engineering Software
("Dunarea de Jos" University of Galati, 2010)The project presented in this paper, entitled Numerical Engineering Software is an integrated solution which contains a various range of numerical methods for the solving of diverse calculations and mathematical ... -
Optimal Control for Electric Vehicle Stabilization
("Dunarea de Jos" University of Galati, 2010)This main objective of the paper is to stabilize an electric vehicle in optimal manner to a step lane change maneuver. To define the mathematical model of the vehicle, the rigid body moving on a plane is taken into ... -
Computer similation of Phase Shifted series Resonant DC to DC Converter
("Dunarea de Jos" University of Galati, 2010)This paper deals with digital simulation of phase shifted series resonant DC to DC converter using Matlab Simulink. The Simulink models for open loop and closed loop systems are developed and they are used for simulation ... -
Simulation Results of Single Stage AC-AC Converter for Induction Heating
("Dunarea de Jos" University of Galati, 2010)This paper presents simulation of single stage Induction heating system with series Load Resonance. Low frequency AC is converted in to High Frequency Ac using newly developed ZVS-PWM high frequency inverter. This High ... -
A Novel Analysis of Class e Inverter Based Induction Heating System
("Dunarea de Jos" University of Galati, 2010)This paper deals with the simulation and implementation of class E inverter based induction heater system. Class E inverter is analyzed; simulated and implemented. Utility frequency AC Power is converted into high frequency ... -
Voltage Control Scheme for Three Phase SVM Inverter Fed Induction Motor Drive Systems
("Dunarea de Jos" University of Galati, 2010)This paper presents an efficient implementation scheme for the closed-loop voltage control of an induction motor incorporating ‘Space Vector Pulse Width Modulation (SVPWM)’. Voltage control is required to meet the variation ... -
Identification of a Nonlinear Pneumatic Servo System Using Modular Neural Networks
("Dunărea de Jos" University of Galati, 2010)Sometimes, in the case of highly nonlinear systems the traditional approaches of identification and control could be difficult to implement. In this case, a good alternative are the neural networks. In this paper a modular ... -
Improving the Power Factor at Unbalanced Consumers
("Dunarea de Jos" University of Galati, 2010)Unbalanced consumers have led to power quality problems. It is therefore necessary to have on hand solutions and equipment capable of improving the power quality. This paper provides a comparison on improving the power ... -
Indirect Control of a Low Power Single-Phase Active Power Filter
("Dunarea de Jos" University of Galati, 2010)This paper deals with a low power, single phase active filter used to compensate nonlinear loads. The filter uses the indirect control method and it is based on a particular connection between filter, polluting load and ... -
Dc Link Current Estimation in Wind-Double Feed Induction Genera Power Conditioning System
("Dunarea de Jos" University of Galati, 2010)In this paper the implementation of the DC link current estimator in power conditioning system of the variable speed wind turbine is shown. The wind turbine is connected to double feed induction generator (DFIG). The ... -
Adaptive Filter Used as a Dinamic Compensator in Automatic Gauge Control of Strip of Rolling Proceses
("Dunarea de Jos" University of Galati, 2010)The paper deals with a control structure of the strip thickness in a rolling mill of quarto type (AGC – Automatic Gauge Control). It performs two functions: the compensation of errors induced by unideal dynamics of the ... -
A Timel Microcontroller Based Soft Switched PWM ZVS full Bridge DC to DC Converter
("Dunarea de Jos" University of Galati, 2010)This paper deals with the simulation and implementation of soft switched PWM ZVS full bridge DC to DC converter. The 48V DC is efficiently reduced to 12V DC using a DC to DC converter. This converter has advantages like ... -
Simulation Results of Closed Loop Controlled Interline Power Flow Controller System
("Dunarea de Jos" University of Galati, 2010)The Interline Power Flow Controller (IPFC) is the latest generation of Flexible AC Transmission Systems (FACTS) devices which can be used to control power flows of multiple transmission lines. A dispatch strategy is ... -
Digital Simulation of Closed Loop ZVS-ZCS Bidirectional DC-DC Converter for Fuel Celland Battery Application
("Dunarea de Jos" University of Galati, 2010)A closed loop ZVS-ZCS bidirectional dc-dc converter is modeled and appropriate digital simulations are provided. With the ZVS-ZCS concept, the MATLAB simulation results of application to a fuel cell and battery application ... -
Simulation Results of Current Fed Interline Power Flow Controller Using Simulink
("Dunarea de Jos" University of Galati, 2010)Interline Power Flow Controllers (IPFC) have been used to enhance and optimize the use of transmission facilities, under the concept of a Flexible AC Transmission System (FACTS). The main objectives of FACTS are to ... -
Modeling and Speed Control of Induction Motor Drives Using Neural Networks
("Dunarea de Jos" University of Galati, 2010)Speed control of induction motor drives using neural networks is presented. The mathematical model of single phase induction motor is developed. A new simulink model for a neural network-controlled bidirectional chopper ...
