Results 71 to 80 of about 10,701 (258)

Micro-Degradation Characteristics and Mechanism of ZnO Varistors under Multi-Pulse Lightning Strike

Energies, 2020
In view of the problem that ZnO varistors are often subjected to thermal breakdown and deterioration due to lightning strikes in low-voltage power distribution systems, this article used a 8/20 µs multi-pulse surge current with a pulse time interval of ...
Chunlong Zhang, Hongyan Xing, Chunying Li, R. Cai, Dongbo Lv   +4 more
semanticscholar   +1 more source

Determining the effect of bismuth oxide on the microstructure and electrical response of cold‐sintered ZnO varistors

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Microstructure homogeneity and grain size reduction are needed to ensure the current uniformity and reliability required in metal oxide varistors for DC circuit breakers. Cold sintering (CS)–a low‐temperature digestive liquid and high‐pressure densification process–has previously shown reduced grain growth, but it is not clear how the lower ...
Kayla Y. Chuong, Yang Liu, Thomas Forbes, Marshall B. Frye, Lukas Graber, Lauren M. Garten   +5 more
wiley   +1 more source

Three‐Level NF‐TDN Controller for AGC in Thermal‐Hydro‐Gas Power Systems Integrated With TCPS Under Nonlinear Conditions

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Automatic generation control (AGC) is vital for preserving frequency and power balance in modern interconnected power systems (IPSs), which are increasingly challenged by nonlinear dynamics, parameter uncertainties, and unpredictable load variations.
Getaneh Mesfin Meseret, Mohammad Ghiasi
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

Flexural performance of textile fine grained mortar containing risk husk ash as a partial cement replacement in reinforced concrete beams [PDF]

, 2018
External strengthening of RC beam become a popular method to reduce deterioration. Due to highest demanding on external strengthening, a new innovation was introduced called as textile fine grained mortar (TFGM).
Mohammad, Noor Shuhada
core  

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

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

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  

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

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