Results 71 to 80 of about 2,070 (218)

Abnormal Expansion Along the Synthesis of Zinc Stannate: A Way for Porous Ceramics Without Addition of Pore Generators

Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.
The abnormal expansion associated with the simultaneous synthesis and sintering of Zn2SnO4 from ZnO and SnO2 is due to the reaction mechanism and correlated with the conversion. This phenomenon opens the way to manufacture porous ceramics without the addition of pore generators, simplifying the process, and especially the thermal treatment.
María José Orts, Eugeni Cañas, Valentín Pérez‐Herranz, Sergio Mestre   +3 more
wiley   +1 more source

A Device for Investigating the AC Characteristics of Metal Oxide Varistors

IET Power Electronics
In recent years, the AC characteristics of metal oxide varistors have attracted growing research interest. This study presents an insulated‐gate bipolar transistor‐based device designed to address the limitations of existing power supply systems, which ...
Xinyan Xiao, Lanjun Yang, Yonggang Yue
doaj   +1 more source

The Influence of Ni2O3 Doping Concentration on the Alternating Current Aging Characteristics of ZnO Varistor

International Journal of Ceramic Engineering &Science, Volume 8, Issue 1, January 2026.
ABSTRACT When the surge arrester is subjected to the working voltage for an extended period, it undergoes alternating current (AC) aging, which degrades the arrester's parameters and affects the safety of the power grid. Ni2O3 is an important additive in the ZnO varistor formulation, and its doping ratio significantly influences the performance of the ...
Lei Wang, Jian Zhang, Wenbo Yu, Lu Li, Xin Cheng   +4 more
wiley   +1 more source

Processing of textured zinc oxide varistors via templated grain growth

, 2005
WOS: 000230039800024Textured, dense zinc oxide varistors were successfully fabricated by Templated Grain Growth (TGG) technique. Rod-like, anisotropic ZnO particles (templates) were synthesized by homogeneous precipitation method.
Özer, IO, Suvacı, Ender
core   +1 more source

Unsupervised Detection of Surface Defects in Varistors with Reconstructed Normal Distribution Under Mask Constraints

Applied Sciences
Surface defect detection serves as one of the crucial auxiliary components in the quality control of varistors, and it faces real challenges such as the scarcity of defect samples, high labelling cost, and insufficient a priori knowledge, which makes ...
Shancheng Tang, Xinrui Xu, Heng Li, Tong Zhou   +3 more
doaj   +1 more source

A Compact Air‐Cooled Totally‐Enclosed Integrated Motor Drive for Industrial Applications

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
This work presents a totally‐enclosed fan‐cooled integrated motor drive for industrial applications, in which the power converter is housed inside the motor and cooled using the existing fan, with a focus on the thermal behaviour and integration challenges. Using loss models and a combination of finite‐element and lumped‐parameter thermal analysis on a
Yentl Joos, Florian Vandenbroeke, Peter Sergeant, Hendrik Vansompel   +3 more
wiley   +1 more source

Comparative Assessment of Lightning Overvoltages at Transformer and Hydrogenerator Terminals Under Nonideal Station‐Side Metal‐Oxide Arrester Conditions

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
This study comparatively assesses lightning‐overvoltage propagation to the transformer high‐voltage terminal and hydrogenerator busbar of a hydropower plant under prescribed lightning‐current injection and selected nonideal conditions of a station‐side metal‐oxide arrester.
Jiachen Zhang, Bo Zhang, Wang Guo, Chenen Sun, Zeyu Zhao, Yuanyang Liu, Jichun Yi, Wei Li, Yanliang Qiu, Guanjun Zhang   +9 more
wiley   +1 more source

Fabrication and electrical characteristics of flash-sintered SiO2-doped ZnO-Bi2O3-MnO2 varistors

Journal of Advanced Ceramics, 2020
The dense ZnO-Bi2O3-MnO2-xSiO2 (ZBMS) varistors for x = 0, 1, 2, 3 wt% were fabricated by flash sintering method under the low temperature of 850 °C within 2 min. The sample temperature was estimated by a black body radiation model in the flash sintering
Pai Peng, Yujun Deng, Jingpeng Niu, Liyi Shi, Yunzhu Mei, Sanming Du, Juan Liu, Dong Xu   +7 more
doaj   +1 more source

Accurate Fault Current Phasor Estimation in Series‐Compensated Transmission Lines Using Improved Particle Swarm Optimisation

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
A new evolutionary search algorithm based on improved Particle Swarm Optimisation (PSO) is introduced in this study to estimate the phasor. The performance has been evaluated through extensive simulations considering transient components, harmonics, and frequency changes in noiseless and noisy conditions.
Seyedeh Mina Abed Shiadeh, Ali Akbar Abdoos, Ali Ebadi   +2 more
wiley   +1 more source

Influence of processing on microstructure and electrical characteristics of multilayer varistors

Journal of Advanced Ceramics, 2019
The paper reports on the influence of processing on microstructure and electrical properties of multilayer varistors based on zinc oxide doped with Bi2O3, Sb2O3, Co2O3, MnO, Cr2O3, B2O3, and SiO2.
D. Szwagierczak, J. Kulawik, A. Skwarek
doaj   +1 more source