Results 61 to 70 of about 4,264 (203)

The effect of Sm2O3 on the sintering and grain growth behaviors of SnO2-based ceramics [PDF]

, 2019
The effect of samarium oxide was examined on the sintering, microstructure, and grain growth behaviors of (Co, Nb)-doped SnO2-based ceramics prepared by co-precipitation method.
Bastami, Hajieh, Poelman, Dirk, Smet, Philippe, Taheri-Nassaj, Ehsan   +3 more
core   +1 more source

Concept Proof of Voltage Suppression across IGBT Application for Fuse‐Current‐Limiting Hybrid DCCBs

IEEJ Transactions on Electrical and Electronic Engineering, Volume 20, Issue 12, Page 1973-1981, December 2025.
Abstract DC power systems require reliable and cost‐effective DC circuit breakers (DCCBs). In a previous study, we introduced a hybrid DCCB featuring a current‐limiting fuse, insulated gate bipolar transistor (IGBT), and a varistor connected in parallel.
Yuki Okegawa, Hu Long, Yubin He, Shungo Zen, Nozomi Takeuchi, Wataru Ohnishi, Yusuke Nakano, Naoto Kodama, Yuki Inada   +8 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 Effects of Electrical Degradation on the Microstructure of Metal Oxide Varistor [PDF]

, 2001
In this paper, the findings from systematic experiments with the purpose to determine the degradation effect of single and multiple current pulses on the microstructure of the Metal Oxide (MO) varistor are described. Six distribution class varistors from
Mardira, K. P., Saha, Tapan K., Sutton, R. A.   +2 more
core  

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

Control strategy of novel hybrid commutated converter based on reverse blocking integrated gate commutated thyristor for commutation failure mitigation

High Voltage, Volume 10, Issue 3, Page 546-554, June 2025.
Abstract Commutation failure (CF) is an inherent problem faced by line commutated converter high voltage direct current (LCC‐HVDC) technology. To completely solve the problem of CF, we have proposed a novel hybrid commutated converter (HCC) technology based on reverse blocking integrated gate commutated thyristor, which can utilise two methods for ...
Zongze Wang, Zhanqing Yu, Lu Qu, Zhichang Yuan, Kangsheng Cui, Jian Shi, Biao Zhao, Rong Zeng   +7 more
wiley   +1 more source

Nonlinear DC-response in Composites: a Percolative Study

, 1997
The DC-response, namely the $I$-$V$ and $G$-$V$ charateristics, of a variety of composite materials are in general found to be nonlinear. We attempt to understand the generic nature of the response charactersistics and study the peculiarities associated ...
A. A. Middleton, A. A. Middleton, A. J. Rimberg, A. Kar Gupta, A. Kar Gupta, Abhijit Kar Gupta, Asok K. Sen, D. A. G. Bruggeman, D. Lenstra, D. S. Fisher, D. van der Putten, E. Canessa, E. K. Sichel, G. D. Mahan, G. E. Pike, I-G. Chen, I. Balberg, J. Robertson, K. K. Bardhan, K. K. Bardhan, L. de Arcangelis, L. K. H. van Beek, M. Aertsens, M. Prester, M. Reghu, M. Sahimi, P. Mandal, R. K. Chakrabarty, R. Landauer, S. A. Wolf, S. Kirkpatrick, S. Roux, U. N. Nandy, Y. Gefen   +33 more
core   +1 more source

Προστασία επαφών ηλεκτρονόμου με varistor [PDF]

, 2016
Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία.
Mavrakis, Vasileios, Μαυράκης, Βασίλειος   +1 more
core   +1 more source

Calculation model by Voronoi network and verification of zinc oxide varistor considering conduction mechanism

International Journal of Ceramic Engineering &Science, Volume 7, Issue 2, March 2025.
In this paper, a method to improve the performance of varistor with the help of computational model was presented and verified by experiments. Abstract This paper investigates the impact of the microstructure of zinc oxide varistor ceramics on their electrical properties.
Xiao Lei, Xin Ning, Peng Liu, Pengfei Meng, Yue Yin, Jingke Guo   +5 more
wiley   +1 more source

Comparative study of two synthesis methods to obtain ZnO-Pr2O3-CoO ceramic powders [PDF]

, 2004
[ES] Los polvos cerámicos de ZnO - Pr2O3 - CoO son utilizados como materia prima para la fabricación de varistores. Estos dispositivos presentan una característica corriente - voltaje altamente no lineal que permiten su uso como conmutadores de estado ...
Caballero Cuesta, Amador, Cruz, Ana Milena, Rodríguez Páez, Jorge E., Villegas, Marina, Ávila, H.   +4 more
core