Results 91 to 100 of about 2,235 (252)

Design and performance evaluation of low-voltage solid-state DCCB using capacitor-based surge mitigation techniques

Power Electronic Devices and Components
This article conducts practical tests on four different configurations of solid-state DC circuit breakers (SS-DCCBs), investigating fault detection and circuit interruption phenomena in DC systems.
Mehdi Moradian, Tek Tjing Lie, Kosala Gunawardane   +2 more
doaj   +1 more source

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

, 2012
The varistor ZnO has been made by using raw materials: ZnO (E-Merck) and additive 0 %, 2.5 %, 5%, 7.5%, and 10% wt. Bi2O3. The important property of varistor ZnO is coefficient of non linier () and it can give influence correlation between current I and ...
Malik, U. (Usman), Tambunan, W. (Walfred)   +1 more
core  

High Dielectric Permittivity in AFe$_{1 / 2}$B$_{1 / 2}$O$_{3}$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

, 2002
AFe$_{1 / 2}$B$_{1 / 2}$O$_{3}$(A- Ba, Sr, Ca; B-Nb, Ta, Sb) ceramics were synthesized and temperature dependencies of the dielectric permittivity were measured at different frequencies.
A. S. Bogatin, I. P. Raevski, Ikeda N., Kolev N., L. Jastrabik, Lemanov V. V., M. A. Malitskaya, Politova E. D., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevskii I. P., S. A. Prosandeev, Saha S., Yamaoka N.   +19 more
core   +1 more source

Review and Analysis of Voltage Clamping Circuits With Low Overvoltage Ratios for DC Circuit Breakers

IEEE Open Journal of the Industrial Electronics Society
Voltage clamping circuits are critical components in most direct-current circuit breakers (dcCBs) to achieve ultrafast dc fault interruptions and an extended lifetime.
Shuyan Zhao, Chunmeng Xu, Lakshmi Ravi, Zhou Dong, Pietro Cairoli   +4 more
doaj   +1 more source

直流开断中MOV均衡特性选配方法研究

Gaoya dianqi, 2023
金属氧化物压敏电阻（metal oxide varistor,MOV）广泛应用于各种直流断路器中，用于抑制过电压、系统能量耗散与开断电压建立。受目前加工工艺限制，单MOV阀片通流能力有限，故断路器中多采用多柱并联结构。柱间电流分配不均会导致局部阀片超负荷耗能，造成开断失败甚至设备损坏。文中基于实验测量建立了一种直流开断工况下的MOV电气模型，基于该模型提出了MOV阀片均流选配方法。经实验验证，传统基于雷电冲击测试方法选配的MOV在直流开断工况的均流特性不能完全满足要求 ...
龙辰, 肖宇, 杨飞, 吴益飞, 吴翊, 荣命哲, 杨景刚, 陈庆   +7 more
doaj  

Cold-Sintered ZnO Ceramic Composites Co-Doped with Polytetrafluoroethylene and Oxides. [PDF]

Molecules, 2023
Xiao Y, Yang Y, Kang S, Li Y, Hou X, Ren C, Wang X, Zhao X.   +7 more
europepmc   +1 more source

Detection mechanism in highly sensitive ZnO nanowires network gas sensors

, 2019
Metal-oxide nanowires are showing a great interest in the domain of gas sensing due to their large response even at a low temperature, enabling low-power gas sensors.
Caicedo, Nohora, Flandre, Denis, Lenoble, Damien, Leturcq, Renaud, Raskin, Jean-Pierre   +4 more
core   +1 more source

CAD based design of a high energy absorption metal oxide varistor [PDF]

, 2019
Razvan Petrenci, Mihaela Frigura-Iliasa, Flaviu Mihai Frigura-Iliasa, Marius Mirica, Lia Dolga, Hannelore Filipescu   +5 more
openalex   +1 more source

Consideration of surge arresters for low voltage mains applications [PDF]

, 2012
The work presented in this report details the background to surge arresters and surge protective device components, viz., spark gaps, gas discharge tubes and metal oxide varistors.
Michalopoulos, Aristidis
core  

A Bibliometric and Comprehensive Review on Condition Monitoring of Metal Oxide Surge Arresters. [PDF]

Sensors (Basel), 2023
Zacarias TG, Sant'Ana WC.
europepmc   +1 more source