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2017 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) & 2017 Intl Aegean Conference on Electrical Machines and Power Electronics (ACEMP)
Provides an abstract for each of the keynote presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings.
Energy conservation is extremely important for the future of mankind. Energy derived from fossil fuel has serious environmental consequences and this needs attention of researchers as well as end users. Renewable energy is attractive but at the same time, fossil fuel based energy cannot be abruptly abandoned. In addition to encouraging use of renewable energy sources, the author of this paper believes...
Power transformers are in operation in a large number in Romania and are the most important parts of the electric power system. This paper addresses issues related to the efficiency and the diagnosis of transformers which are in operation. The motivation is the fact that the power transformers are the most expensive elements of the power system. The research about reliability and efficiency will always...
The application of pulsed electric fields to biological tissue enables both ohmic heating of the material and a permeabilisation of the biological cells at ambient temperature due to electroporation. To what extend each of both mechanisms is effective can be controlled via the applied electric field strength and duration of treatment. A device for batch treatment of biological material with pulsed...
This paper presents a new approach of lifetime and loading stress level estimation for Multilayer Ceramic Capacitors (MLCCs) to design a reliable Electronic Control Unit (ECU). These components are widely used in automotive ECU to perform functions as filtering, timing, buffering or noise reduction. The lifetime estimation is concerned to define the behavior of MLCCs over their lifespan in required...
Considering the growth of distributed energy generation systems in distribution networks, quick and precise protection and at the same time low cost is very perceptible. This protection includes directional relays beside overcurrent relays. The directional relays in the network require voltage and current relays; therefore, the cost of using this type of protection in the distribution network is very...
in this paper, the authors investigated the implementation of the analysis of variance method (ANOVA) for the energy efficiency analysis of a given smart grid. In the first section of the work, technical matters such as energy optimization and saving, consumption analysis and predictions in the smart grid context are presented. In the followings, the theoretical background regarding the analysis of...
Based on recent European policies and strategic economic competitive measures the Electrical Engineering & Computers education process (EEC) in the “Transilvania” University from Brasov, Romania has undergone a profound transformation during the Romanian country access in European community. Within “Bologna Education process” the current emphases were the reinsertion of the scientific fundamentals...
The analysis of disturbances transmission is a complex process that supposes the study of disturbances' sources, propagation and magnitude. The paper presents the results obtained within a research that aimed to assess the condition of low-voltage microgrids, relating to power quality, principally harmonic distortion and imbalance. For this goal, a careful investigation of the disturbances' sources...
Increasing the energy efficiency in electric distribution networks is equivalent with making available for the distribution companies of an additional quantity of electricity resulted by reducing the energy losses. Even if the European Union took into account a series of energy efficiency measures policy in the past 10 years for loss reduction and CO2 amounts, an integrated framework to accelerate...
The wireless power transfer systems (WPTS) work at frequencies between 20 kHz – 40 MHz. Considering the system consisting of two magnetically coupled coils, used in WPTSs, as a passive linear two-port network (PL2PN) in harmonic state, this paper describes the possibility of using the scattering parameters S in generating the power gains between the two ports of these coils. The amplification (or...
This paper compares three possibilities for determining the flicker level generated by industrial customer with arc furnaces: by calculating the electromagnetic perturbations, by experimental measurements, and by simulation using specialized software. The influence of the fault level on the propagation of perturbation in the power system represents a challenging issue studied within the existing context...
Based on a previously detailed data mining about primary renewable sources concerning solar radiation and wind speed, the authors present some results related to reliability of supply using Bayesian networks (BNs). The paper focuses on how the structure and parameters of BN can be obtained from the data. A short review of learning methods, scoring function types and specific algorithms is included...
The actual energy efficiency requirements generated a large usage of the power electronic converters for driving asynchronous motors in numerous industrial facilities. The associated power quality issues of these adjustable speed drives, especially harmonic currents, adversely affect the power distribution transformers by increasing their losses and decreasing their life time expectancy. Accordingly,...
This paper presents the design and development of a portable Meter Test Equipment (MTE) that can determine the energy measurement error of single and polyphase electronic electricity meters of class indexes A & B - active energy and class 1 & 2 reactive energy. Our work is concentrated around designing the metrological 4-quadrant power supply and error calculator.
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