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Browsing Conferința Internațională SIELMEN - Sisteme Electromecanice și Energetice by Title

Browsing Conferința Internațională SIELMEN - Sisteme Electromecanice și Energetice by Title

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  • Synchronous Undermodulation Control Modes of System with Three PWM Converters 
    OLESCHUK, Valentin; GRIVA, Giovanni; DERISZADEH, Adel; BURCENCO, Victoria (Institute of Electrical and Electronics Engineers, 2017)
    This paper is focused on the operation analysis of transformer-based ac drive system with three modulated converters connected specifically to windings of power transformer. It provides multilevel voltage to induction ...
  • Synthesis and Analysis of PWM Inverter Output Voltages 
    PICA, Constantin Sorin; MAIER, Virgil; PAVEL, Sorin Gheorghe; BELEIU, Horia Gheorghe (Institute of Electrical and Electronics Engineers, 2017)
    The output voltage analysis of PWM inverter, from the photovoltaic (PV) power plant, represents the first of the objectives of this research. On the one hand, a real voltage wave is analyzed, taken by oscillography and on ...
  • Synthesis of the Control Algorithm to the Models of Objects with Inertia First Order and Second Order Astatism 
    IZVOREANU, Bartolomeu; COJUHARI, Irina; FIODOROV, Ion; SECRIERU, Adrian; MORARU, Dumitru; POTLOG, Mihail (IEEE, 2021)
    In this paper it is proposed to synthesize the control algorithm for the models of objects with inertia and second order astatism, which are described the dynamics of various technical objects and technological processes. ...
  • Synthesis of the PID Control Algorithm for the Models of Objects with Second Order Astatism 
    IZVOREANU, Bartolomeu; COJUHARI, Irina; FIODOROV, Ion; SECRIERU, Adrian; MORARU, Dumitru; POTLOG, Mihail (IEEE, 2021)
    In the paper is highlighted the industrial objects as cars, spacecraft, telescopes, plotters, lasers, elevators, etc., which are described by the mathematical model with double astatism. These models of control objects ...
  • SYSEG – Symbolic State Equation Generation 
    IORDACHE, Mihai; DELEANU, Sorin; CURTEANU, Ciprian; GALAN, Neculai; MOSCU, Atanasie (Institute of Electrical and Electronics Engineers, 2017)
    The main objective of this paper is to present an efficient method for the systematic formulation of the state equations characterizing linear and/or nonlinear, time-invariant analog circuits with elements in excess. The ...
  • Technology enhanced electrical engineering education in context of CRUNT TEMPUS project 
    ADASCALITEI, Adrian; TODOS, Petru; SECRIERU, Nicolae (Editura ALMA, 2015)
    In the CRUNT TEMPUS project, epedagogy of using ITC learning environments was used. Elearning interuniversity network of Moldova uses a virtual learning environment for training and learning process improvement dedicated ...
  • A Theoretical Result on Stabilizability of Oxygen Excess Ratio for PEM Fuel Cell 
    NIANE, Moustapha; ZERROUGUI, Mohamed; OUTBIB, Rachid (Institute of Electrical and Electronics Engineers, 2017)
    This paper is a contribution to the problem of the control of PEM Fuel Cell. More precisely, a theoretical result is proposed to prove that the oxygen excess ratio value can controlled by using a continuous state feedback. ...
  • The thermodynamic benefits of the integration of cogeneration installations in bakery ovens 
    CHELMENCIUC, Corina (Editura ALMA, 2015)
    The present work is motivated by the need to reduce the irreversibility of the process with combustion gas in bakery ovens, especially it was analyzed the process of the mixing of the obtained gases in the combustion chamber ...
  • Three Parameters Optimization of Acting Force of DC Electromagnet 
    DOLAN, Alin-Iulian (Institute of Electrical and Electronics Engineers, 2017)
    The paper proposes an optimized geometry for a DC electromagnet combining the experimental design (DOE) and FEM. The optimization problem takes into account three geometrical parameters (coil shape ratio, support thickness ...
  • Three-dimensional models’ usage in courses placed on Moodle platform 
    SHULETEA, Angela; DINTU, Sergiu; VIRLAN, Petru (Institute of Electrical and Electronics Engineers, 2017)
    One of the biggest benefits of virtual education is the ability to easily explain complex processes and principles using animations and interactive 3D models. The purpose of this study is to determine which 3D software ...
  • Three-Phase Voltage Generator for Stands in the Research Concerning Devices Models for Energy Systems Interconnection 
    POSTOLATY, Vitalie; SUVOROV, Alexandr; ANISIMOV, Vladimir (Institute of Electrical and Electronics Engineers, 2017)
    Due to with the actuality of the task of interconnection of non-synchronously operating alternating current energy systems, an experimental comparison of the interconnection devices models, which implement various methods ...
  • Time Delay Evaluation in Printed Circuit Boards based on Timed Hard Petri Nets 
    SUDACEVSCHI, Viorica; ABABII, Victor; CALUGARI, Dmitri; BORDIAN, Dimitrie (Institute of Electrical and Electronics Engineers, 2017)
    This paper presents a synthesis method for delay time evaluation in the printed circuit boards based on Timed Hard Petri Nets. For the specification and modeling of the delay time evaluation system, Timed Synchronous Petri ...
  • Trajectories in the Competence Field During Formative Assessment 
    GĂLĂŢANU, Cătălin Daniel (Institute of Electrical and Electronics Engineers, 2017)
    The issue of competence assessment in engineering is analyzed in the context of the lack of motivation for learning. The source of this lack of motivation comes from the distribution of high school students. This assignment ...
  • Unbundled Smart meters in the new smart grid era. Assessment on compatibility with European standardisation efforts 
    SANDULEAC, Mihai; TOMA, Lucian (Institute of Electrical and Electronics Engineers, 2017)
    With the new active distribution network where distributed energy resources are increasingly present and where Smart meters will become the most ubiquitous equipment in low voltage (LV) networks, we are presenting a new ...
  • Unele aspecte privind istoria MCHE din Republica Moldova 
    AMBROS, Tudor; URSATII, Nicolai (Editura ALMA, 2015)
    În lucrare este descrisă reţeauă hidrografică din Republica Moldova şi unile aspecte istorice a microcentralelor hidroelectrice (MCHE) de pe teritoriul ţării. Sunt prezentate machete de microhidrocentrale, care nu necesită ...
  • Unele aspecte privind problema de ajustare optimală a protecţiei prin relee într-un system energetic vast 
    MACOVEI, Ilie; AMBROS, Tudor; RUJANSCHI, Dumitru (Editura ALMA, 2015)
    Una dintre principalele condiţii care se pun reţelelor electrice este aceea a siguranţei în funcţionare, adică a alimentarii continue cu energie electrică a consumatorilor. Asigurarea funcţionarii fără întrerupere a ...
  • Unele aspecte privind protecția șI metoda de calcul a curenților de scurtcircuit în sistemele eoliene cu viteză variabilă 
    MACOVEI, Ilie; GROPA, Victor; RUJANSCHI, Dumitru (Editura ALMA, 2015)
    În timpul de față are loc o extindere masivă a introducerii în exploatare a surselor alternative de energie, mai cu seamă a celor eoliene. Există proiecte și în Republica Moldova. Se utilizează preponderent turbine eoliene ...
  • Using Differential Evolution Algorithms for the Analysis of Nonlinear Circuits 
    PETRESCU, Camelia; PLOPA, Olga (Institute of Electrical and Electronics Engineers, 2017)
    The paper presents the analysis of nonlinear resistive networks using a loop current formulation. The solution to the nonlinear algebraic system of equations is sought using several variants of differential evolution (DE) ...
  • Vertical Axis Wind Turbines: Open Airfoils and Plastic Blades 
    RABEI, Ivan (IEEE, 2021)
    The paper addresses two aspects of vertical axis wind turbines. In the first part, aerodynamic aspects were addressed. Two types of blade segments were tested in the wind tunnel, both defined by the NACA 0018 airfoil. One ...
  • Virtual Monitoring of Electrical Circuitry 
    DONOSE, Costel; SCHREINER, Cristina-Mihaela; PODARU, Alexandru-Constantin; PAVEL, Ionel (Institute of Electrical and Electronics Engineers, 2017)
    The use of virtual instruments has a very important role in both specialized laboratories and academic ones. Because it is a modern method, it provides increased comfort in monitoring electrical circuits in the long term, ...

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