Results 21 to 30 of about 2,095 (173)
Impulse Life Evaluation Method of MOV Based on Weibull Distribution
IEEE Access, 2021 The working life evaluation of metal oxide varistor (MOV) is always expected by MOV manufacturers and users. In Oct. 2019, the International Electrotechnical Commission (IEC) SC37B established a project team PT 61643–333 led by the author of this ...
Qibin Zhou +3 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 +4 more
doaj +1 more source
Research on electrothermal characteristics of metal oxide varistor based on multi‐physical fields
IET Generation, Transmission & Distribution, 2022 The electrothermal characteristics of metal oxide varistor (MOV), closely related to its microstructure, are important for studying its failure mechanism.
Qibin Zhou +4 more
doaj +1 more source
Leaching Kinetics of Zinc from Metal Oxide Varistors (MOVs) with Sulfuric Acid [PDF]
Metals, 2016 The leaching kinetics of zinc from zinc oxide-based metal oxide varistors (MOVs) was investigated in H2SO4 at atmospheric pressure. Kinetics experiments were carried out at various agitation speeds, particle sizes, initial H2SO4 concentrations, and reaction temperatures.
Youngjin Kim, Jaeryeong Lee
openaire +2 more sources
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
Investigation of Limitations in Passive Voltage Clamping-Based Solid-State DC Circuit Breakers
IEEE Open Journal of Power Electronics, 2022 This paper investigates limitations of passive voltage clamping based dc solid-state circuit breakers (SSCBs). There are two major contributions of this paper.
Shuyan Zhao +4 more
doaj +1 more source
High Voltage, Volume 8, Issue 6, Page 1275-1284, December 2023., 2023 Abstract With the development of a distributed generation, direct current (DC) load and energy‐storage equipment, voltage‐source‐converter‐based medium‐voltage DC systems (VSC‐MVDC) have attracted more attention due to its low power consumption, high reliability, independent power control and so on.
Muhammad Junaid +6 more
wiley +1 more source
Varistor coupling method and recommendation parameters for combination wave test
IET Science, Measurement &Technology, Volume 17, Issue 7, Page 277-286, September 2023., 2023 Low‐voltage varistors are adopted here in the OrCAD/PSpice environment to analyze the influence of varistor coupling on the output characteristic of the combination wave generator (CWG). Experiments have also been conducted here, and our simulation results are found to match the experimental ones well.
Mi Zhou +6 more
wiley +1 more source
A three‐stage switching MMC topology for capacitor voltage ripple reduction in HVDC applications
IET Generation, Transmission &Distribution, Volume 17, Issue 13, Page 2953-2962, July 2023., 2023 Here, the three‐stage switching MMC (TSS‐MMC) topology is proposed, which can greatly reduce the capacitor voltage ripple of sub modules (SMs) by dynamically adjusting the position of inductance on the upper and down bridge arms. The effectiveness and engineering practicability of the proposed TSS‐MMC is verified by transient simulation program built ...
Qiang Fan +4 more
wiley +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