Results 11 to 20 of about 395,154 (260)
Measuring the energy handling capability of metal oxide varistors [PDF]
, 2001 Metal oxide varistors are widely used in many power electronics circuits to protect against transient over voltages. Certain applications are very demanding on the energy handling capability of the varistors. This paper gives an overview of the failure modes of ZnO varistors and investigates their characteristics when subjected to repetitive current ...
Ahmed, M. M. R. +3 more
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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 +3 more
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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
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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 +1 more
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IEEE transactions on industry applications, 2022 In this article, metal oxide varistor (MOV) design optimization and switching control in the main circuit breaker (MCB) branch of a progressively switched hybrid dc circuit breaker (DCCB) is presented.
Md Rifat Kaisar Rachi, I. Husain
semanticscholar +1 more source
Metal Oxide Varistor (MOV) Lifetime Estimation with Impulse-Based Testing in PV Inverter Systems
International Symposium on Power Electronics for Distributed Generation Systems, 2022 Surges caused by lightning strikes could damage electrical components in photovoltaic (PV) systems. Metal oxide varistors (MOVs) are commonly used to protect PV systems from lightning strikes.
Yuxi Men +3 more
semanticscholar +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 +4 more
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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 +2 more
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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 +53 more
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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 +3 more
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