Results 21 to 30 of about 2,235 (252)

Stability of Metal-Oxide Varistor Characteristics in Exploitation Conditions

Acta Physica Polonica A, 2009
Wide-spread use of metal–oxide varistors for non-linearity over-voltage protection results in a variety of possible working conditions. It is therefore essential to have a thorough insight into their reliability in various exploitation environments.
Lončar, Boris B., Vujisic, M., Stanković, K., Osmokrović, Predrag V.   +3 more
openaire   +4 more sources

Application of Nonlinear Optimization for Fault Location in Transmission Lines with Series Compensation Protected by Varistors

Energies, 2023
This paper introduces a novel approach to fault localization in transmission lines with series compensation using nonlinear optimization. The objective function minimization provides information on the fault distance and the current at which the ...
Simone Aparecida Rocha, Rodrigo Tomas Nogueira Cardoso, Eduardo Gonzaga Da Silveira, Alex-Sander Amavel Luiz   +3 more
doaj   +1 more source

Performance Evaluation and Limitations of Overvoltage Suppression Circuits for Low- and Medium-Voltage DC Solid-State Breakers

IEEE Open Journal of Power Electronics, 2021
This paper presents a design and performance evaluation of three different overvoltage suppression circuits employed in a solid-state circuit breaker for medium- to high-power and low- to medium-voltage DC grids.
Andreas Giannakis, Dimosthenis Peftitsis
doaj   +1 more source

Influence of ambient temperature on electrical properties of varistor-positor structure

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2022
Recently, the combined two-layer structure based on varistor ceramics and polymer posistor nanocomposites with carbon filler (known as PolySwitch resettable fuses) has been seen as one of the promising elements for protecting electrical circuits from ...
Alexander Ivanchenko, Alexander Tonkoshkur   +1 more
doaj   +1 more source

Numerical modelling of MOV with Voronoi network and finite element method

High Voltage, 2021
The electrical and thermal characteristics of metal oxide varistor (MOV) are essential for the study of MOV performance and degradation. This paper provides a modelling method of MOV to simulate its microstructure geometry with the Voronoi network and ...
Qibin Zhou, Hongxiang Yang, Xin Huang, Manyu Wang, Xin Ren   +4 more
doaj   +1 more source

Creating a varistor based on zinc oxide (ZNO) powder, obtained by plasma dynamic method [PDF]

, 2001
Zinc Oxide (ZnO) is a perspective material.
Firsovа, K., Sivkov, Aleksandr Anatolyevich, Shanenkova, Yuliya Leonidovna   +2 more
core   +2 more sources

Assessment of MOV Deterioration under Energized Conditions

Energies, 2020
Metal oxide varistors (MOVs) are widely used to protect electrical and electronic devices that are very vulnerable to surges due to the low insulation level of the equipment. MOVs deteriorate gradually due to manufacturing defects, mechanical and thermal
Sung-Wook Kim, Nam-Hoon Kim, Gyung-suk Kil   +2 more
doaj   +1 more source

Size effect on properties of varistors made from zinc oxide nanoparticles through low temperature spark plasma sintering [PDF]

, 2009
Conditions for the elaboration of nanostructured varistors by spark plasma sintering (SPS) are investigated, using 8-nm zinc oxide nanoparticles synthesized following an organometallic approach. A binary system constituted of zinc oxide and bismuth oxide
Angerer, Anselmi-Tamburini, Bartkowiak, Bernik, Beyer, Buscaglia, Catherine Elissalde, Chaim, Chaim, Chaim, Chen, Choi, Chung, Clarke, Clarke, de la Rubia, Drouet, Duran, Ellmer, Ezhilvalavan, Ezhilvalavan, Gao, Glot, Greuter, Guha, Gupta, Han, Hong, Huang, Kahn, Kahn, Kang Xue, Kobayashi, Lee, Lin, Liu, Look, Luo, Mishra, Monge, Morris, Olsson, Olsson, Olsson, Onreabroy, Onreabroy, Pillai, Singhal, Sonder, Wang, Wang, Wong, Xu, Zhijian Shen   +53 more
core   +2 more sources

On the Computation of the Voltage Distribution along the Non-Linear Resistor of Gapless Metal Oxide Surge Arresters

Energies, 2018
The voltage distribution along the non-linear resistance of metal oxide surges is of great importance for their proper operation, since the non-uniform potential distribution results in higher thermal stresses of the varistor discs near the high voltage ...
Christos A. Christodoulou, Vasiliki Vita, Valeri Mladenov, Lambros Ekonomou   +3 more
doaj   +1 more source

A supercapacitor based enhancement technique for stand-alone surge protection circuits [PDF]

, 2013
With the International Technology Roadmap for Semiconductors predicting below-25nm feature-size VLSIs, powered by DC power supplies of less than 1V, protection against transients has become mandatory for modern electronic systems.
Fernando, Jayathu, Kularatna, Nihal
core   +2 more sources