Evaluation of Disturbing Electromagnetic Emissions Produced by an Electrosurgery Unit Matei-Constantin Moruz, Silviu-Constantin Vornicu, Petronela-Camelia Oprea, Andrei Sălceanu Sielmen 2025 Proceedings of the 15th International Conference on Electromechanical and Energy Systems, 2025 The paper presents the determinations done on the electric field strength generated by an electrosurgery unit (ESU) in a neurosurgery room. We made determinations for two different models of ESU equipment; however, this paper reports only the determinations made based on the “Radiocauter Altius HF 200 W ”, produced by the Romanian company MobilService. The device was set to operate in both monopolar mode (at the maximum power required by the “cut” function) and bipolar mode (at the only available power, for coagulation). To simulate the load as faithfully as possible on which the ESU works, we used a piece of turkey breast meat. To measure the values of the electromagnetic field generated, we used an affordable, mobile solution: the Spectrum Analyzer RSA306B, connected via USB to a laptop on which the Tektronix SignalVu-PCTM software is installed. To measure the values of the electric and magnetic fields, we used two sets of near-field probes, specifically sniffer-type. In this paper, we have reported only the values provided using the 904 probe, electric field sphere type, model 7405ETSLindgren. We made determinations at 32 points located in the nodes of a square grid with a side length of 50 cm, at a height of 125 cm above the floor. The results initially provided by our measurement system in dBm were converted into V/m for comparison with reference levels established by the ICNIRP guidelines. Finally, these results have also been represented (3D and/or 2D). Conclusions could be drawn, establishing future research directions that complement the formulation of some recommendations.
Considerations on Experimental Determinations of the Specific Absorption Rate Data for a Multi-Band Mobile Phone Andrei Sălceanu, Marinel Temneanu, Bogdan Giurcanu, Cătălin Lăzărescu, Silviu Vornicu, Silviu Ursache Sielmen 2025 Proceedings of the 15th International Conference on Electromechanical and Energy Systems, 2025 This paper provides a comprehensive overview of the legislative and regulatory framework governing human exposure to non-ionizing electromagnetic radiation, emphasizing the importance of adhering to these regulations to ensure public safety. The evolving landscape of wireless communications necessitates ongoing research and development of safety standards. The document highlights the role of accredited laboratories-following standards such as ISO/IEC 17025 -in ensuring compliance through rigorous testing, particularly in measuring the Specific Absorption Rate (SAR) of devices. Testing protocols, such as those outlined in EN 62209 parts 1 and 2, ensure that devices emitting more than 100 mW are adequately assessed before market release. The study conducted includes SAR tests on a recently authorized multiband smartphone <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(2 \mathrm{G}, 3 \mathrm{G}, 4 \mathrm{G})$</tex>, measuring SAR in different positions (cheek, tilt, front of the body, and back of the body) using phantom models to simulate human exposure accurately. Results indicate no clear trend correlating frequency, technology, and energy absorption, but highlight the significance of device positioning in minimizing exposure. Furthermore, the document examines SAR attenuation at a depth of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{2 0 ~ m m}$</tex>, illustrating increased attenuation with higher frequencies and highlighting the importance of positioning and frequency considerations in ensuring user safety. This detailed approach highlights the delicate balance between technological advancements and the need to maintain rigorous safety standards.
3-Axis Virtual Gaussmeter for Measurement and Advanced Characterization of the Magnetic Fields from Overhead Power Lines Eduard Lunca, Silviu Vornicu, Alexandru Salceanu Epei 2024 Proceedings of the 2024 13th IEEE International Conference and Expositions on Electric and Power Engineering, 2024 In its first part, the paper describes a 3-axis virtual gaussmeter for measuring and characterizing low level magnetic fields in the frequency range from 10 Hz to 2 kHz, mainly generated by overhead power lines and underground power cables. It consists of a 3-axis detachable probe, a data acquisition unit and LabVIEW software running on a portable computer, which features a graphical user interface with multiple functionality and advanced data visualization. In addition to RMS value, waveform and frequency-spectra measurements, the MAG-3D gaussmeter allows for magnetic field monitoring including Max and Min Hold functions, as well as automatically plotting lateral and longitudinal profiles of the resultant magnetic field (total magnetic flux density) according to the standard procedures used in human exposure studies. In the second part of the paper, lateral profiles measured for a 220-kV double circuit overhead power line are compared to similar results obtained by analytical calculation with a previously developed software tool, PowerMAG. Overall, a very good agreement between results can be observed.
Numerical and Analytical Analysis of the Low-Frequency Magnetic Fields Generated by Three-Phase Underground Power Cables with Solid Bonding Eduard Lunca, Silviu Vornicu, Alexandru Sălceanu Applied Sciences Switzerland, 2023 There is a special concern for measuring and simulating low-frequency magnetic fields generated by underground power cables, particularly in human exposure studies. In the present study, an accurate 2D finite element model for computing magnetic fields generated by three-phase underground power cables with solid bonding is proposed. The model is developed in ANSYS Maxwell 2D low-frequency electromagnetic field simulation software for a typical 12/20 kV (medium-voltage) three-phase underground power cable in both trefoil and flat formations, but it can be adapted to any cable system. Model validation is achieved by analytical computations conducted with a software tool based on the Biot–Savart law and the superposition principle. RMS magnetic flux density profiles calculated at various heights above the ground with these two methods correlate very well. This is also true for induced shield currents. The application of the finite element model to multiple three-phase power cables laid together is also considered.
Sensory System Based on Intelligent Sensors for Implementation of a Modern Weather Station Marius Branzila, Stefan-Andrei CîŞlariu, Silviu Vornicu, Carmen Brinzila 2023 International Conference on Electromechanical and Energy Systems Sielmen 2023 Proceedings, 2023 When we discuss the quick development of technology, the weather station has become an asset for those who want to enjoy a tool that can provide accurate data about temperature, pressure, and various weather data, but also an essential element in the successful operation and development of various economic branches. In this work, we have presented how to take information from the environment and use it to create predictions. Using a modular concept, we can easily connect several controllers without making significant changes to the original system, which is a great advantage over other products on the market.
Assessment of Extremely Low-Frequency Magnetic Field from Multiple High-Voltage Overhead Power Lines in Parallel Configuration Silviu Vornicu, Eduard Lunca, Bogdan Constantin Neagu, Florin Constantin Baiceanu EPE 2022 Proceedings of the 2022 12th International Conference and Exposition on Electrical and Power Engineering, 2022 The study investigates the distribution of the extremely low-frequency magnetic field around multiple highvoltage overhead power lines in parallel configuration. It is conducted using a computation approach based on the finite element method for an arrangement of five 110-kV doublecircuit lines located in a suburban area of the Iasi city, Romania. Results obtained by numerical simulation are then compared to appropriate regulations regarding human exposure to magnetic fields. The cumulative effect of the magnetic fields from multiple overhead power lines is also discussed.
Measurement and Numerical Simulation of the Low-Frequency Electric Field Generated by an Overhead Power Line Eduard Lunca, Silviu Vornicu, Ionel Pavel, Mihai Andrusca EPE 2022 Proceedings of the 2022 12th International Conference and Exposition on Electrical and Power Engineering, 2022 In this study, the low-frequency electric field generated by a 110-kV double-circuit overhead power line is comparatively assessed by measurements and numerical simulations. Measurements were performed with a selfdeveloped 5 Hz – 2 kHz electric field sensor (EFS-01) in conjunction with a portable signal analyzing device, i.e. Fluke 43 single-phase power quality analyzer, while simulations were performed using a 2D finite element model developed in ANSYS Maxwell 2D. The results obtained by the two methods are in good agreement and in line with expected exposure field levels for such types of 110-kV overhead power lines.
Study upon the Influence of Bundle Configurations on Corona Losses Alexandru Salceanu, Silviu Vornicu, Dragos Florin Bordeianu, Constantin Dan Neagu EPE 2020 Proceedings of the 2020 11th International Conference and Exposition on Electrical and Power Engineering, 2020 In the first part of our paper is presented in some details the issue of corona discharges produced in the immediate vicinity of the overhead high voltage power lines. The deterministic connection between the potential gradient at the surface of the active conductors and the initiation of corona discharges is theoretically approached. The decrease of electric field strength in the very surrounding area of the active conductors reduces the risk of corona discharges, but at the cost of increasing the electric field strength at the standard height (from the perspective of human exposure) of 1 m from the ground. We have considered a perfectly balanced 400 kV double-circuit three-phase overhead line, using suspension towers SN 400231, transmitting 1580 A (rms value) per phase in 4 distinct variants: a single conductor, respectively bundles of 2, 3 or 4 (parallel) subconductors. For each bundle, we have considered two representative types of spacer-dampers:side of 3 and 5 dm, respectively. For each case and sub-case, simulations have been performed using ANSYS and EMFACDC software, drawing the lateral profile of the electric field strength at three representative heights: 1 m from the ground, the height of the conductors (9 m) and the symmetrical height (above the conductors, 17 m from the soil). Useful conclusions have been drawn, both to reduce the risk of initiating corona discharges and to protect residential areas from electric field strength generated by the bundle-type configurations of over 220 kV overhead power lines.
Considerations on Experimental Determinations of the Specific Absorption Rate Data for a Multi-Band Mobile Phone A Sălceanu, M Temneanu, B Giurcanu, C Lăzărescu, S Vornicu, ... 2025 International Conference on Electromechanical and Energy Systems … , 2025 2025.0
Evaluation of Disturbing Electromagnetic Emissions Produced by an Electrosurgery Unit MC Moruz, SC Vornicu, PC Oprea, A Sălceanu 2025 International Conference on Electromechanical and Energy Systems … , 2025 2025.0
3-Axis Virtual Gaussmeter for Measurement and Advanced Characterization of the Magnetic Fields from Overhead Power Lines E Lunca, S Vornicu, A Salceanu 2024 IEEE International Conference And Exposition On Electric And Power … , 2024 2024.0
Sensory system based on intelligent sensors for implementation of a modern weather station M Branzila, SA CîŞlariu, S Vornicu, C Brinzila 2023 International Conference on Electromechanical and Energy Systems … , 2023 2023.0 Citations: 2
Numerical and analytical analysis of the low-frequency magnetic fields generated by three-phase underground power cables with solid bonding E Lunca, S Vornicu, A Sălceanu Applied Sciences 13 (10), 6328 , 2023 2023.0 Citations: 3
Measurement and numerical simulation of the low-frequency electric field generated by an overhead power line E Lunca, S Vornicu, I Pavel, M Andrusca 2022 International Conference and Exposition on Electrical And Power … , 2022 2022.0 Citations: 3
Assessment of extremely low-frequency magnetic field from multiple high-voltage overhead power lines in parallel configuration S Vornicu, E Lunca, BC Neagu, FC Baiceanu 2022 International Conference and Exposition on Electrical And Power … , 2022 2022.0 Citations: 5
Numerical Modelling of the Magnetic Fields Generated by Underground Power Cables with Two-point Bonded Shields AS Eduard Lunca, Silviu Vornicu 25th IMEKO TC4 International Symposium - IMEKO TC-4 2022, 221-226 , 2022 2022.0 Citations: 3
Computerized device for monitoring ecg and ppg signals-design and redesign based on value engineering method A Vîlcu, E Luncă, S Vornicu, IV Herghiligiu, C Toporăscu Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power … , 2022 2022.0 Citations: 1
Finite element analysis of electromagnetic fields emitted by overhead High-Voltage power lines E Lunca, BC Neagu, S Vornicu Numerical Methods for Energy Applications, 795-821 , 2021 2021.0 Citations: 23
Influence of High Voltage Bundle Configurations on Human Exposure A Salceanu, S Vornicu, E Lunca, M Istrate 2020 International Conference and Exposition on Electrical and Power … , 2020 2020.0 Citations: 1
Study upon the influence of bundle configurations on corona losses A Salceanu, S Vornicu, DF Bordeianu, CD Neagu 2020 International Conference and Exposition on Electrical And Power … , 2020 2020.0 Citations: 2
DC Digital Gaussmeter Based on Linear Hall-Effect Sensor IC S Ursache, E Lunca, S Vornicu 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0 Citations: 4
ANSYS Maxwell finite element model for 2D computation of the magnetic field generated by overhead high-voltage power lines S Vornicu, E Lunca, A Salceanu 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0 Citations: 15
PC-Based Temperature and Humidity Recorder with USB Connectivity E Lunca, S Vornicu, C Damian 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0
Computation of the low frequency magnetic fields generated by a 12/20 kV underground power line S Vornicu, E Lunca, A Salceanu 2018 International conference and Exposition on Electrical and Power … , 2018 2018.0 Citations: 11
Specific absorption rate evaluation in case of exposure of the human body to radiofrequency electromagnetic field generated by mobile communications O Bejenaru, C Lazarescu, S Vornicu, V David 2018 International Conference and Exposition on Electrical And Power … , 2018 2018.0 Citations: 6
2D Finite Element Model for computing the electric field strength-rms generated by overhead power lines E Lunca, S Vornicu, A Salceanu, O Bejenaru Journal of Physics: Conference Series 1065 (5), 052024 , 2018 2018.0 Citations: 19
CERCETĂRI TEORETICE ȘI EXPERIMENTALE PRIVIND CARACTERIZAREA EXPUNERII UMANE LA CÂMPURI ELECTROMAGNETICE DE JOASĂ FRECVENȚĂ SC Vornicu
MOST CITED SCHOLAR PUBLICATIONS
Finite element analysis of electromagnetic fields emitted by overhead High-Voltage power lines E Lunca, BC Neagu, S Vornicu Numerical Methods for Energy Applications, 795-821 , 2021 2021.0 Citations: 23
2D Finite Element Model for computing the electric field strength-rms generated by overhead power lines E Lunca, S Vornicu, A Salceanu, O Bejenaru Journal of Physics: Conference Series 1065 (5), 052024 , 2018 2018.0 Citations: 19
ANSYS Maxwell finite element model for 2D computation of the magnetic field generated by overhead high-voltage power lines S Vornicu, E Lunca, A Salceanu 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0 Citations: 15
Computation of the low frequency magnetic fields generated by a 12/20 kV underground power line S Vornicu, E Lunca, A Salceanu 2018 International conference and Exposition on Electrical and Power … , 2018 2018.0 Citations: 11
Specific absorption rate evaluation in case of exposure of the human body to radiofrequency electromagnetic field generated by mobile communications O Bejenaru, C Lazarescu, S Vornicu, V David 2018 International Conference and Exposition on Electrical And Power … , 2018 2018.0 Citations: 6
Assessment of extremely low-frequency magnetic field from multiple high-voltage overhead power lines in parallel configuration S Vornicu, E Lunca, BC Neagu, FC Baiceanu 2022 International Conference and Exposition on Electrical And Power … , 2022 2022.0 Citations: 5
DC Digital Gaussmeter Based on Linear Hall-Effect Sensor IC S Ursache, E Lunca, S Vornicu 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0 Citations: 4
Numerical and analytical analysis of the low-frequency magnetic fields generated by three-phase underground power cables with solid bonding E Lunca, S Vornicu, A Sălceanu Applied Sciences 13 (10), 6328 , 2023 2023.0 Citations: 3
Measurement and numerical simulation of the low-frequency electric field generated by an overhead power line E Lunca, S Vornicu, I Pavel, M Andrusca 2022 International Conference and Exposition on Electrical And Power … , 2022 2022.0 Citations: 3
Numerical Modelling of the Magnetic Fields Generated by Underground Power Cables with Two-point Bonded Shields AS Eduard Lunca, Silviu Vornicu 25th IMEKO TC4 International Symposium - IMEKO TC-4 2022, 221-226 , 2022 2022.0 Citations: 3
Sensory system based on intelligent sensors for implementation of a modern weather station M Branzila, SA CîŞlariu, S Vornicu, C Brinzila 2023 International Conference on Electromechanical and Energy Systems … , 2023 2023.0 Citations: 2
Study upon the influence of bundle configurations on corona losses A Salceanu, S Vornicu, DF Bordeianu, CD Neagu 2020 International Conference and Exposition on Electrical And Power … , 2020 2020.0 Citations: 2
Computerized device for monitoring ecg and ppg signals-design and redesign based on value engineering method A Vîlcu, E Luncă, S Vornicu, IV Herghiligiu, C Toporăscu Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power … , 2022 2022.0 Citations: 1
Influence of High Voltage Bundle Configurations on Human Exposure A Salceanu, S Vornicu, E Lunca, M Istrate 2020 International Conference and Exposition on Electrical and Power … , 2020 2020.0 Citations: 1
Considerations on Experimental Determinations of the Specific Absorption Rate Data for a Multi-Band Mobile Phone A Sălceanu, M Temneanu, B Giurcanu, C Lăzărescu, S Vornicu, ... 2025 International Conference on Electromechanical and Energy Systems … , 2025 2025.0
Evaluation of Disturbing Electromagnetic Emissions Produced by an Electrosurgery Unit MC Moruz, SC Vornicu, PC Oprea, A Sălceanu 2025 International Conference on Electromechanical and Energy Systems … , 2025 2025.0
3-Axis Virtual Gaussmeter for Measurement and Advanced Characterization of the Magnetic Fields from Overhead Power Lines E Lunca, S Vornicu, A Salceanu 2024 IEEE International Conference And Exposition On Electric And Power … , 2024 2024.0
PC-Based Temperature and Humidity Recorder with USB Connectivity E Lunca, S Vornicu, C Damian 2019 International Conference on Electromechanical and Energy Systems … , 2019 2019.0
CERCETĂRI TEORETICE ȘI EXPERIMENTALE PRIVIND CARACTERIZAREA EXPUNERII UMANE LA CÂMPURI ELECTROMAGNETICE DE JOASĂ FRECVENȚĂ SC Vornicu
