Sebastian Popescu

Entropy Production in a DC Plasma Diode with a Fireball on the Anode

Sebastian Popescu, Dan Gheorghe Dimitriu

One of the consequences of driving a plasma discharge away from the thermodynamic equilibrium is the appearance of one or more fireballs in front of the anode. The formation of this self-organized space charge structure marks the transformation of part of the …

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Search for nonresonant new physics signals in high-mass dilepton events produced in association with b-tagged jets in proton-proton collisions at $$\sqrt{s}=13$$ TeV

V. Chekhovsky, A. Hayrapetyan, V. Makarenko, A. Tumasyan et autres

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Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$

A. Hayrapetyan, V. Makarenko, A. Tumasyan, W. Adam et autres

Abstract This paper presents a search for new physics through the process where a massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark–antiquark pair, which is reconstructed as a …

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Observation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math> Production at the CMS Experiment

Anonymous, I. Ovtin, A. Tumasyan, W. Adam et autres

The first observation of single top quark production in association with a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>W</a:mi> </a:math> and a <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mi>Z</c:mi> </c:math> boson in proton-proton collisions is reported. The analysis uses data at center-of-mass energies of 13 and 13.6 TeV …

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Power Factor Correction and Sensorless Control of PMSM Using FOC Strategy

Claudiu-Ionel Nicola, Marcel Nicola, Sebastian Popescu, Marian Duță

This article presents the sensorless control of a PMSM based on the FOC (Field Oriented Control) strategy and on PFC (Power Factor Correction), where the rotor speed is provided by speed observers. It presents the block structure of the PFC together with …

Power Quality Analysis System Based on LabVIEW Real-Time and Reconfigurable FPGA Modules Using Wavelet Transform

Marcel Nicola, Claudiu-Ionel Nicola, Sebastian Popescu, Dumitru Sacerdoțianu et autres

This paper present a Quality (PQ) monitoring system for the purpose of detection of PQ disturbances using Wavelet Transform (WT). The proposed system is based on the real-time capabilities of the Real-Time LabVIEW operating system and on a CompactRIO type realtime computer …

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Modern Techniques for Power Quality Analysis Using LabVIEW Environment

Claudiu-Ionel Nicola, Marcel Nicola, Viorica Voicu, Maria Cristina Niţu et autres

This paper presents a case study for monitoring the quality of electric energy in an industrial manufacturer of technical rubber and reclaimed rubber products. The measurements were carried in the power supply point where the quality of the electric energy is influenced …

Quality analysis of electric energy using an interface developed in LabVIEW environment

Claudiu-Ionel Nicola, Viorica Voicu, Sebastian Popescu, Maria Cristina Nitu et autres

This paper presents a case study for monitoring the quality of electric energy in an industrial consumer. The measurements were carried in the power supply point and the data processing was achieved using LabVIEW software. It was made an interface to allow …

Analysis using virtual instrumentation of perturbations induced in the network to supply a consumer from a UPS

Maria Cristina Nitu, Claudiu-Ionel Nicola, Viorica Voicu, Sebastian Popescu et autres

This paper presents the virtual instrument used to monitor and analyze the behavior of Uninterruptible Power Supplies (UPS) system. The monitoring system includes: Hall effect sensors, data acquisition board, the LabVIEW environment and PC host. The applications enable the equipment to perform …

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The technical progress and its reflection in the construction of the medium voltage metal enclosed switchgear for secondary distribution of electricity

Ion Pătru, M.J. Duta, Sebastian Popescu, Sorin Vlase et autres

This article presents the results of the research carried out for modernization of the medium voltage metal enclosed switchgear for secondary distribution of electricity. The metal enclosed switchgear upgrading is based on the patent proposal no. A/00230/14.03.2013 for this purpose and aims …

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Local monitoring system of the permissible temperature for the medium voltage metal-enclosed switchgear and control gear

Serghie Vlase, Marian Duță, Sebastian Popescu, Cristian-Eugeniu Sălceanu et autres

It is presented a local monitoring system which act in case of permissible temperature exceeding in the contact for the electrical insulation material, power supply cables and for the metallic casing of the metal-enclosed switchgear and control gear, in order to eliminate …

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Using of the electrical-mechanical transmissions in agricultural tractors and self-propelled machines.

Sebastian Popescu, D. Cioroianu, Florin C. Loghin