Results 31 to 40 of about 3,398 (227)

Photosensor Characterization for the Cherenkov Telescope Array: Silicon Photomultiplier versus Multi-Anode Photomultiplier Tube

, 2013
Photomultiplier tube technology has been the photodetector of choice for the technique of imaging atmospheric Cherenkov telescopes since its birth more than 50 years ago.
Bouvier, Aurelien, Errando, Manel, Gebremedhin, Lloyd, Hidaka, Naoya, Hinton, Jim, Johnson, Caitlin, Kuznetsov, Andrey, Mukherjee, Reshmi, Otte, Nepomuk, Strausbaugh, Robert, Tajima, Hiroyasu, White, Richard, Williams, David   +12 more
core   +1 more source

Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC

International Journal of Electrical Power & Energy Systems
The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC).
Jiangshan Liu, Fengting Li, Chunya Yin, Ruikang Chen, Lu Han, Yingping Shi   +5 more
doaj   +1 more source

Temperature characterisation of an optically-interrogated Rogowski coil [PDF]

, 2014
An investigation into the performance of an optically-interrogated Rogowski coil over temperatures up to 80 °C is presented. Preliminary thermal tests reveal that the sensor response is temperature-dependent and the measurement errors are increased at ...
Fusiek, Grzegorz, Niewczas, Pawel, Orr, Philip   +2 more
core   +1 more source

Electromagnetic transient suppression for thyristor switch‐based auto‐passing neutral section system

IET Power Electronics, 2023
The auto‐passing neutral section (ANS), applied in the traction substation or section post (SP), is one of the effective methods to improve the continuity of power supply, and the electromagnetic transient is the key issue impacting its application value.
Wu Liran, Wu Mingli, Liu Qiujiang, Liu Jianqiang   +3 more
doaj   +1 more source

Research on Formation Mechanism and Suppression Measures of Internal Overvoltage for High-speed Train

机车电传动, 2020
Aiming at the internal overvoltage phenomenon during high-speed train operation, the overvoltage formation mechanism and its influencing factors were analyzed by taking the case of the overvoltage in passing neutral section and the overvoltage of ...
Shanqiang GU, Jingdi SUN, Rui ZHANG, Heng XU, Kun CHEN   +4 more
doaj  

Fundamental Modeling of the Switching Transition in High-Speed Power Electronics

IEEE Access
Recent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj   +1 more source

Advanced partial discharge testing of 540V aeronautic motor fed by SiC inverter under altitude conditions [PDF]

, 2017
The present paper reports non-electrically intrusive partial discharge investigations on an aeronautic motor fed by SiC inverter drive under variable environmental conditions.
Abadie, Cédric, Billard, Thibaut, Taghia, Bouazza   +2 more
core   +1 more source

Review of overhead line defect inspection based on deep learning and UAV images

电力工程技术
Line commutated converter based high voltage direct current (LCC-HVDC) is the key to large-scale grid connection and long-distance transmission of renewable energy. However, faults such as DC blocking and commutation failure may lead to short-term excess
ZHOU Wenqing, LIU Gang
doaj   +1 more source

Recent advances in boosting interfacial bubble dynamics with external fields

Droplet, EarlyView.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie, Yanwei Zhang, Yi Liu, Yiming Wei, Jing‐Li Luo, Chenyu Xu   +5 more
wiley   +1 more source

Toward Safer and Sustainable Lithium Metal Batteries: Fluorine‐Free Solid Polymer Electrolytes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An analysis to assess the impact of fluorine in polymer electrolyte‐based lithium metal batteries has been conducted. It has been demonstrated that fluorine‐free LiTIM salt delivers a electrochemical performance similar to that of its fluorinated analogue salts, given the complete lithium dissociation in coordination with PEO and the restricted anion ...
David Fraile‐Insagurbe, Leire Meabe, Brigette Althea Fortuin, Itsaso Segura‐Laparra, Elene Sasieta‐Barrutia, Rosalía Cid, Javier Carrasco, Władysław Wieczorek, Maria Forsyth, Michel Armand, María Martínez‐Ibañez   +10 more
wiley   +1 more source