Results 41 to 50 of about 31,656 (211)

High-frequency transient suppression in the distribution network: analysis and performance enhancement of an intelligent switch protection on-column

Journal of King Saud University: Engineering Sciences
Adjacent feeder column switches in electrical distribution systems may malfunction or refuse to operate during fault line isolation due to the rapid propagation of fault current.
Haider M. Umran, Samir M. Umran
doaj   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

Advanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim, Seoa Kim, Erik A. Wu, Darren H. S. Tan, Shawn Peng, Xiaolin Li   +5 more
wiley   +1 more source

A Dual Enhancement Switching Technology for Vacuum Circuit Breakers in Various AC-Based Operational Environments

IEEE Access
Vacuum circuit breakers (VCBs) have gained the attention of the medium voltage community for their involvement in various applications. However, the problem of arc-reignition is still under investigation with R-C snubber circuits considered as the most ...
Tamer Eliyan, Saad F. Al-Gahtani, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

Transition From Primary to Secondary School: Igniting Attendance and Engagement Among Aboriginal and Torres Strait Islander Students Through National Policy Reform

Australian Journal of Social Issues, EarlyView.
ABSTRACT Australia's Closing the Gap reform aims to address disparities experienced by Aboriginal and Torres Strait Islander peoples. There are specific targets focussed on key educational transitions; yet, the transition to secondary education is not a targeted priority.
Azhar Hussain Potia, Kai W. Wheeler, Tracy Woodroffe, Karen Thorpe   +3 more
wiley   +1 more source

Study of arc and magnetic field parameters under delayed breaking condition of DB-DC VCB

AIP Advances
Taking the mechanical double-break DC vacuum circuit breaker (DB DC VCB) as the research object, the magnetic field and temperature field distribution between the breaks and the plasma characteristics under the working condition of gap difference caused ...
Chongyang Huang, Shurui Yang, Zengyu Shan, Zhengbo Li, Yundong Cao   +4 more
doaj   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

Biological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey, Geoffrey J. Cary, Teigan Cremona, Hugh F. Davies, Brett P. Murphy, Sam C. Banks   +5 more
wiley   +1 more source

Numerical analysis of switching performance evaluators in low-voltage switching devices

, 2015
An arc modelling is a valuable and useful tool to evaluate the switching performance of low-voltage switching devices (LVSDs) during breaking operation before testing real products. Moreover, it helps improve interruption capability of LVSDs and optimize
Golosnoy, I.O., McBride, J.W., Shin, D.
core  

Combustion regimes in sequential combustors: Flame propagation and autoignition at elevated temperature and pressure

, 2018
This numerical study investigates the combustion modes in the second stage of a sequential combustor at atmospheric and high pressure. The sequential burner (SB) features a mixing section with fuel injection into a hot vitiated crossflow.
Noiray, Nicolas, Schulz, Oliver
core   +1 more source

Rapid analysis & design methodologies of High-Frequency LCLC Resonant Inverter as Electrodeless Fluorescent Lamp Ballast [PDF]

, 2007
The papers presents methodologies for the analysis of 4th-order LCLC resonant power converters operating at 2.63 MHz as fluorescent lamp ballasts, where high frequency operation facilitates capacitive discharge into the tube, with near resonance ...
Ang, Y A, Bingham, Chris, Foster, M, Stone, D A   +3 more
core   +1 more source

Ultra‐High‐Efficiency On‐Chip CO2 Conversion by Nanosecond Self‐Pulsing Micro‐Plasma Devices

Carbon Energy, EarlyView.
A micro‐plasma chip with sub‐10‐μm electrode gaps is introduced for efficient CO2‐to‐CO conversion. The device self‐converts a DC power supply into nanosecond pulses, producing field‐emission electrons that vibrationally excite CO2, driving dissociation via the ladder‐climbing mechanism. A scaled‐up chip array achieves 30% single‐pass conversion and 50%
Guangyu Sun, Bartu Karakurt, Hongkeng Zhu, Onder Soydal, Jeremy S. Luterbacher, Elison Matioli   +5 more
wiley   +1 more source