Results 111 to 120 of about 1,951 (227)

国际上基于数值仿真计算金属氧化物避雷器的研究进展

Dianci bileiqi, 2018
系统综述了基于数值仿真计算技术在金属氧化物避雷器（metal-oxide surge arresters,MOA）研究中的应用发展。共分3个方面:1)基于等效电路模型的数值仿真计算;2)基于电、机械与热的两或多物理量（场）耦合的金属氧化物电阻片（metal-oxide surge varistor,MOV）数值仿真计算;3)整只MOA的电场、温度场或多物理场耦合的数值仿真计算。对于MOV的建模和仿真计算,将来主要的努力方向是改进数学计算模型,以便可以描述ZnO晶界与时间和温度相关的特性 ...
赵冬一, 李凡, 汤霖
doaj  

Synergistic Effects of Pr₆O₁₁ and Co₃O₄ on Electrical and Microstructure Features of ZnO-BaTiO₃ Varistor Ceramics. [PDF]

Materials (Basel), 2021
Shaifudin MS, Ghazali MSM, Kamaruzzaman WMIWM, Wan Abdullah WR, Kassim S, Ismail NQA, Sa'at NK, Mohd Zaid MH, Mohd Fekeri MF, Matori KA.   +9 more
europepmc   +1 more source

Test Facility and Preliminary Performance of a 100 kW Class MPD Thruster [PDF]

A 260 kW magnetoplasmadynamic (MPD) thruster test facility was assembled and used to characterize thrusters at power levels up to 130 kW using argon and helium propellants.
Haag, Thomas W., Mantenieks, M. A., Parkes, J. E., Raitano, P., Sovey, J. S.   +4 more
core   +1 more source

DC-SSCB Snubber for Electric Propulsion Ships With Effective Surge Voltage Reduction and Fast Dissipation of Fault Current Energy

IEEE Access
This paper proposes a snubber circuit for SSCB that performs voltage clamping operation in two stages to reduce surge voltage. The surge voltage is suppressed in the first stage using a MOV with low operating initiation and clamping voltages.
Jae-Hun Cha, Guangxu Zhou, Sung-Geun Song, Feel-Soon Kang   +3 more
doaj   +1 more source

Formation and Properties of Thermistor Chips Based on Semiconductor 3D Metal Oxide Films Obtained by RF-Magnetron Sputtering. [PDF]

Int J Mol Sci, 2023
Novozhilov V, Belov A.
europepmc   +1 more source

A DC SSCB With Range-Limited Parallel Operation Switches and a Snubber Circuit Utilizing Inverse Current Injection

IEEE Access
Although many snubber circuits have been studied, research on circuits that effectively suppress surge voltage while supporting bidirectional operation remains relatively limited.
Jae-Seong Jo, Sun-Pil Kim, Sang-Hyeok Lee, Sung-Geun Song, Feel-Soon Kang   +4 more
doaj   +1 more source

Novel Ultrahigh-Performance ZnO-Based Varistor Ceramics. [PDF]

ACS Appl Mater Interfaces, 2021
Tian T, Zheng L, Podlogar M, Zeng H, Bernik S, Xu K, Ruan X, Shi X, Li G.   +8 more
europepmc   +1 more source

Synthesis of zinc oxide/silica composite nanoparticles by flame spray pyrolysis [PDF]

, 2018
Zinc oxide (ZnO)/silica (SiO2) composite nanoparticles were made by flame spray pyrolysis. The effects of the Zn/Si ratio on particle properties were examined and compared with those of the pure ZnO and SiO2 particles made at the same conditions ...
Mädler, L., Pratsinis, S., Tani, T.
core  

Synthesis And Characterization Of Co-Doped SnO2/TiO2 Semiconductor Nano Crystallites Via Sol-Gel Method [PDF]

, 2011
SnO2/TiO2 nano particles are novel wide band gap semiconductors with modified applications of SnO2 and TiO2 in some fields including gas sensing, photo catalytic, solar cells and so on.
Beigi, H., Devi, G.S., Hamoon, H.Z.R., Nanaji, A., Rao, J.V.R., Reddy, K.R.   +5 more
core  

Electrostatic Discharge analysis of multi layer ceramic capacitors [PDF]

, 2009
Canavero, Flavio, Dadgostar, H., Rostamzadeh, C.   +2 more
core   +1 more source