Results 61 to 70 of about 290 (180)

Study on the Unipolar Impulse Aging Characteristics of ZnO Varistors and Their Condition Monitoring Methods

Applied Sciences
Metal-oxide surge arresters (MOSAs) are critical devices for overvoltage protection in power systems, and the aging characteristics of their zinc oxide (ZnO) varistors under impulse and power-frequency voltages exhibit significant differences.
Yongqiang Fan, Wenkai Meng, Xiaoyun Tian, Yonggang Yue, Zhihui Li, Minxin Xu, Xinyan Xiao, Lanjun Yang   +7 more
doaj   +1 more source

Simulation of the Conductive Process of Nano ZnO Varistors Based on Animation Plane Form

Journal of Chemistry, 2020
Among many nano materials and chemical materials, zinc oxide nanomaterials have attracted researchers’ interest because of their high efficiency, low cost, easy preparation, and variable morphology. The purpose of this study is to explore the fabrication
Xin Liu
doaj   +1 more source

Research on influence of double energy absorptions on dynamic volt‐ampere characteristics of metal oxide varistors

High Voltage, Volume 10, Issue 1, Page 78-87, February 2025.
Abstract Metal oxide varistors (MOVs) are extensively employed in DC circuit breakers (DCCBs) to suppress overvoltage, dissipate energy and build up voltage after interruption. Despite their widespread use, the performance of MOVs under short‐time, double energy absorption conditions is not well understood, posing a challenge to their application in ...
Chen Long, Yifei Wu, Yi Wu, Mingzhe Rong, Yu Xiao, Yunfan Bai   +5 more
wiley   +1 more source

Bio‐Plausible Multimodal Learning with Emerging Neuromorphic Devices

Advanced Science, Volume 11, Issue 45, December 4, 2024.
Multimodal neuromorphic computing strives to achieve enhanced biologically plausible multimodal learning with low complexity and high energy‐efficiency. This review provides a comprehensive overview of bio‐plausible multimodal learning with emerging neuromorphic devices, specifically focusing on multimodal neuromorphic computing and their capabilities ...
Haonan Sun, Haoxiang Tian, Yihao Hu, Yi Cui, Xinrui Chen, Minyi Xu, Xianfu Wang, Tao Zhou   +7 more
wiley   +1 more source

Taguchi‐optimized spark plasma‐sintered nanostructured ZnO varistors with exceptional nonlinearity and energy‐absorption performance

Results in Materials
This study presents a comprehensive investigation of advanced nanostructured ZnO-based varistors fabricated through Spark Plasma Sintering (SPS) and optimized via the Taguchi method.
Arash Vaghef-Koodehi
doaj   +1 more source

Precursor impurity‐mediated effect in the photocatalytic activity of precipitated zinc oxide

Journal of the American Ceramic Society, Volume 107, Issue 12, Page 8269-8280, December 2024.
Abstract Photocatalytic degradation of pollutants using nanoparticles presents a promising method globally. However, effectively harnessing light absorption while mitigating recombination and nanoparticle agglomeration remains challenging. Here, we explore the synthesis and characterization of zinc oxide nanoparticles for photocatalytic dye removal in ...
A. M. Ilyas, Jamal‐Deen Musah, Siu Wing Or, Ayodeji Oladiran Awodugba   +3 more
wiley   +1 more source

Microstructure–property relationship in textured ZnO-based varistors

Acta Materialia, 2010
The relationship between microstructure texturing and electrical characteristics of a ZnO-based varistor system was investigated in comparison with a varistor system having the same chemical composition but conventional microstructure. Highly textured ZnO-based varistors were produced via the templated grain growth (TGG) technique.
Ozer, I. Ozguer, Suvaci, Ender, Bernik, Slavko   +2 more
openaire   +2 more sources

Influence Mechanism of Micro Grain-boundary Parameters to the Electrical Properties of ZnO Varistor

工程科学与技术
ZnO varistors exhibit excellent nonlinear voltage–current characteristics and substantial energy capacity, enabling them to absorb impulse energy during power system overvoltages and thus protect the electrical equipment.
Pengfei MENG, Jingke GUO, Xiao LEI, Lei WANG, Bingbing ZHANG, Kui MIAO, Jun HU   +6 more
doaj  

Microstructural and nonohmic properties of ZnO.Pr6O11 CoO polycrystalline system

Materials Research, 2010
The microstructure and electrical properties of varistors composed of (95-x) ZnO + x Pr6O11 + 5 CoO (ZPC), (x = 0.1, 0.5 and 1.0) and sintered at 1300 and 1350 °C, were investigated. According to X-ray diffraction, several phases (ZnO, Pr2O3 and Pr2CoO4)
Miguel Angel Ramírez, José Francisco Fernández, José de Frutos, Paulo Roberto Bueno, Elson Longo, José Arana Varela   +5 more
doaj   +1 more source

The Simulation of Failure Modes on ZnO Varistors

IEEJ Transactions on Power and Energy, 2008
There are three main failure modes of ZnO varistors; thermal runaway, puncture and cracking. It is important from the operational point of view for user of ZnO surge arresters to know the fundamental mechanisms of these failure modes. I led many equations on these failures and simulated failure modes.
openaire   +1 more source