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Conferința Internațională SIELMEN - Sisteme Electromecanice și Energetice: Recent submissions

Now showing items 61-80 of 171

Permanent Energetic Management a Solution in Rehabilitation of Small Hydropower Plants

RADULESCU, Victorita (Institute of Electrical and Electronics Engineers, 2017)

The paper presents an evaluation of the role, importance, and necessity of the rehabilitation for the main courses of small rivers, equipped with Small Hydropower Plants- SHP. The assurance of a proper management, in ...
Fuzzy Control of Cooling Water Pumps related to a Power Plant

POPESCU, Daniela; BRATU, Cristian; DINU, Radu Cristian (Institute of Electrical and Electronics Engineers, 2017)

Optimum operation of cooling water systems means minimum use of water while maintaining proper temperatures to limit algae growth and cool all equipment properly.Combined application of inverters and cooling water pumps ...
The Estimation of the Technical and Financial Indicators of Exploitation Combined Heat and Power Plants with Variable Load

BERZAN, Vladimir; POSTOLATI, Vitaly; BABICI, Vladimir; BYCOVA, Elena (Institute of Electrical and Electronics Engineers, 2017)

The paper presented the algorithm for elaboration of the phenomenological model of the generation source, which includes both the technical and financial indices of operation, as well as the costs to the primary energy ...
Analysis of the Impact of Tariff Levels on Energy and Other Services on Macroeconomic Indicators

GUTIUM, Tatiana; POSTOLATY, Vitaly; BYKOVA, Elena; CELAC, Irina (Institute of Electrical and Electronics Engineers, 2017)

Energy resources are one of the main components of the production cost. The volume of this kind of cost depends on the consumption and tariffs set by suppliers. The branches of the economy are mutually related at the stage ...
Analysis of the state and methods for increasing the efficiency of operation of district heating system in the Chisinau municipality

OCLANSCHI, Gennady; BABICH, Vladimir; BERZAN, Vladimir; POSTOLATY, Vitaly (Institute of Electrical and Electronics Engineers, 2017)

A centralized system for thermal energy supply in Chisinau (CSTES) comprises thermal energy sources, namely two Combined Heat and Power stations (CHP) - Source1 and Source2 and two Heating Plants (HP West and HP South). ...
Short-term forecasts of fuels consumption in the analysis of energy security

BICOVA, Elena; BERZAN, Vladimir; GRODETSKY, Mihail (Institute of Electrical and Electronics Engineers, 2017)

Energy security is the main goal of almost all of documents in the energy sector. The monitoring 46 indicators of energy security is based on the annually replenished database to calculate indicators. Fuel consumption ...
High-Efficiency Electronic Transformer for Powering of Individual Consumers from the Medium Voltage Grid

BERZAN, Vladimir; ERMURACHI, Iurie (Institute of Electrical and Electronics Engineers, 2017)

The proposed and argued concept for realization includes the possibility of realizing an average of the medium voltage transformer, for example, with 10 / 0.22 kV parameters. Equipment with these parameters is known as ...
Chişinău CHP-1 Retrofitting by the Proces of Installing Gas Turbines

GUŢU-CHETRUŞCA, Corina; GUŢU, Aurel (Institute of Electrical and Electronics Engineers, 2017)

Equipped with outdated installations from the nineteen-fifties and nineteen-sixties, Chisinau CHP-1, operates with an electrical efficiency below 20%. However its decommissioning encounters several problems, related to the ...
Laboratory Board for Studying the Half-Bridge Power Electronic Converters

STICEA, Daniel; ALBU, Mihai; CHIRIAC, Gabriel (Institute of Electrical and Electronics Engineers, 2017)

The paper describes a laboratory board made by the authors to study the power electronic converters whose topology is a simple half bridge structure with power transistors and recovery diodes. The board is conceived to be ...
The Drive System Optimization of Single Screw Extruder to Control Thickness of Insulation

CAZAC, Vadim (Institute of Electrical and Electronics Engineers, 2017)

The main phase in production of electric wires and cables is the isolation process. The extruder is the equipement that provides the insulation process by extruding the insulating material onto metal wire. The efficiency ...
Control Algorithm Design and Implementation for a Bidirectional PWM Boost Rectifier

SURU, Constantin Vlad; LINCA, Mihaita; PREDA, Cristina Alexandra (Institute of Electrical and Electronics Engineers, 2017)

The aim of this paper is the design and implementation of the control algorithm of a PWM boost rectifier apable to handle bidirectional energy flow. For this goal, the boost rectifier control loops must be tuned for the ...
Set-up and Implementation of a Recuperative Stand for Testing a Filtering and Regeneration System

BITOLEANU, Alexandru; POPESCU, Mihaela; SURU, Vlad Constantin; PUNCEA, Oana (Institute of Electrical and Electronics Engineers, 2017)

The paper presents the methodology and design of testing structure dedicated to one laboratory model of a filtering and regeneration system (SISFREG) developed through the project number 42/2014, type Partnerships - PCCA ...
Increasing Power Quality in a 6-pulse DC-Traction Substation

POPESCU, Mihaela; BITOLEANU, Alexandru; SURU, Vlad; DOBRICEANU, Mircea (Institute of Electrical and Electronics Engineers, 2017)

This paper presents an active DC-traction substation with six-pulse uncontrolled rectifier, whose structure and control ensure the braking energy recovery and increased power quality in both traction and regeneration ...
Interdependence between the harmonics of the output and input currents to a three phase rectifier bridge

NEACĂ, Mitică Iustinian (Institute of Electrical and Electronics Engineers, 2017)

A large number of scientific papers published recently have as their study object the emergence of voltage and current harmonics and their limitation through various methods or devices. At modern power stations equipped ...
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 ...
Development Of Induction Motor Torque Control Algorithm for Electric Vehicles on Inclined Roads

USER, Yavuz; TABANLI, Nilay (Institute of Electrical and Electronics Engineers, 2017)

Direct torque control using space vector modulation (DTC-SVM) is one of the most popular control methods of induction motor for electric vehicle (EV). This paper proposes DTC-SVM with improved deadbeat control. During ...
Comparison of Reference Current Generation Techniques for Shunt Active Power Filter

ULLAH, Ikram; ASHRAF, Muhammad; REHMAN, Abdur (Institute of Electrical and Electronics Engineers, 2017)

In this paper a comparison is made between three different control strategies for reference current generation in three-phase three-wire shunt active power filter. Two approaches are being used for this purpose; one is ...
Study of a Tiredness Identification System

MILICI, Dan Laurențiu; GRAUR, Adrian; POIENAR, Mihaela; CENUȘĂ, Mihai; BARASCU, Andrei (Institute of Electrical and Electronics Engineers, 2017)

The paper presents a designed, implemented and tested application intended to evaluate the level of attention to people who perform activities that require a high level of concentration, using a measurement system in one ...
Limits and Usability of Fast Fourier, Discrete Waveletand Wavelet Packet Transforms Applied at Signalsfrom a Primary Winding of a Locomotive Transformer

NICOLAE, Ileana-Diana; MARINESCU, Radu-Florin; NICOLAE, Petre-Marian; CRISTINA, Maria Diana (Institute of Electrical and Electronics Engineers, 2017)

Single phase currents and voltages were acquired from the primary winding of a locomotive transformer. Four operating regimes were considered (acceleration, running at constant speed, normal and respectively regenerative ...
Luminance Measurements For Light Pollution Assessment

GĂLĂŢANU, Cătălin Daniel (Institute of Electrical and Electronics Engineers, 2017)

Light pollution is a phenomenon that needs to be closely monitored. There are currently many SQMs (Sky Quality Meters) that monitor the visibility of stars, but the method has the disadvantage that it does not eliminate ...

Now showing items 61-80 of 171

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