Results 81 to 90 of about 475,480 (267)

Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends [PDF]

, 2017
Circuit breakers (CBs) are the main protection devices for both alternating current (AC) and direct current (DC) power systems, ranging from tens of watts up to megawatts.
Alan J. Watson, Alberto Castellazzi, Bin, Carlson, Chunyang Gu, Francis Effah, Huaren, Min Cheol, Pat Wheeler   +8 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

Studi Aplikasi Keramik Znbico Sebagai Termistor Ntc [PDF]

, 2006
STUDY ON THE APPLICA TION OF ZnBiCo CERAMICS AS NTC THERMISTORS. A study onthe application ofZnO-Bi203-CoO (ZnBiCo) ceramicsfor NTC thermistors had been carried out. The aim ofthisstudywas tofind alternative NTCthermistors.
Henny, H. (Henny), Suhandi, A. (Andi), Syarif, D. G. (Dani)   +2 more
core  

Advancements in wearable heart sounds devices for the monitoring of cardiovascular diseases

SmartMat, Volume 6, Issue 1, February 2025.
This article presents the recent advancements in wearable and flexible heart sound devices, focusing on their mechanics, types of sensors, flexible sensing materials, and prospective denoising techniques. Furthermore, the potential applications of heart sounds for the monitoring of cardiovascular diseases are reviewed as well along with its future ...
Rafi u Shan Ahmad, Muhammad Shehzad Khan, Mohamed Elhousseini Hilal, Bangul Khan, Yuanting Zhang, Bee Luan Khoo   +5 more
wiley   +1 more source

Mechanism and suppression of breaking overvoltage of DC circuit breakers

High Voltage, Volume 10, Issue 1, Page 32-46, February 2025.
Abstract The occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and formulates a fault protection strategy.
Lu Qu, Zhangqing Yu, Zhizheng Gan, Xin Yan, Cheng Jiang, Yulong Huang, Mingshen Li, Jian Feng   +7 more
wiley   +1 more source

Evaluation Tests of Metal Oxide Varistors for DC Circuit Breakers [PDF]

, 2022
Chunmeng Xu, Andrew Rockhill, Zhi Jin Zhang, Matthew Bosworth, Maryam Saeedifard, Michael Steurer, Peter Zeller, Lukas Graber   +7 more
openalex   +1 more source

Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis

International Journal of Ceramic Engineering &Science, Volume 7, Issue 1, January 2025.
Simulation methods were used to help reveal the effect mechanism of Y, Bi, and Co dopants on ZnO varistors. It provides an important theoretical basis for the development of high‐performance varistor. Abstract ZnO varistors doped with Y2O3${\rm Y}_2{\rm O}_3$, Bi2O3${\rm Bi}_2{\rm O}_3$, and Co2O3${\rm Co}_2{\rm O}_3$ were analyzed for electrical ...
Zhengzheng Fu, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yue Yin, Pengfei Meng, Jingke Guo   +7 more
wiley   +1 more source

Lightning protection for power transformers of Aqaba Thermal Power Station

Archives of Electrical Engineering, 2020
In this paper, a study of the lightning phenomenon and its harmful effect on Aqaba Thermal Power Station (ATPS), located in the south-western border of Jordan, is presented using the Electromagnetic Transients Program – Alternative Transients Program ...
Wael Fawzi Abu Shehab, Shehab Abdulwadood Ali, Mohammad Ibrahim Alsharari   +2 more
doaj   +1 more source

High‐Current Cryogenic DC Solid‐State Circuit Breaker for Electric Aircraft

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
Cryogenic and superconducting technologies have great potential to significantly enhance the power density and efficiency of electric propulsion aircraft. This paper presents the design of a 300 V/1700 A DC solid‐state circuit breaker (SSCB) operating at cryogenic temperatures.
Zhongying Wang, Jiawen Xi, Xianwu Zeng, Emelie Nilsson, Jean‐francois Rouquette, Edwin Calderon, Ravi Kiran Surapaneni, Ludovic Ybanez, Xiaoze Pei   +8 more
wiley   +1 more source

Efek Aditif Bi2o3 Terhadap Mikrostruktur Dan Koefisien Non Linier Varistor Zno [PDF]

, 2007
Telah dilakukan pembuatan varistor ZnO dengan menggunakan bahan baku : ZnO (E-Merck) danaditif : 0 %, 2,5 %, 5 %, 7,5 %, dan 10 % berat Bi2O3 . Sifat utama varistor ZnO adalah koefisien nonlinier (α) dan merupakan parameter yang mempengaruhi korelasi ...
Gade, M. (M), Muljadi, M. (Muljadi)
core