Results 21 to 30 of about 297 (183)

Synthetic test circuit with two‐level voltage source for HVDC circuit breakers

IET Generation, Transmission & Distribution, 2023
In order to ensure the reliable interruption of high voltage direct current circuit breaker (HVDC CB), the breaking test of HVDC CB plays an important role in its performance verification.
Shixin Xiu, Zhisong Long, Ke Qin, Shenli Jia, Qiang Tang, Zongqin Shi, Feifan Zhang   +6 more
doaj   +1 more source

Experimental methods in chemical engineering: Cyclic voltammetry—CV

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Cyclic voltammetry (CV) is a foundational electroanalytical technique for investigating redox behaviour and evaluating material performance across fields such as molecular electrochemistry, electrocatalysis, sensing, and energy storage. Despite its widespread use, a gap remains between formal electrochemical theory and the practical data ...
Yasser Matos‐Peralta, Christopher Panaritis, JoElen Hagler, Clara Santato, Gregory S. Patience   +4 more
wiley   +1 more source

Improving interruption performance of mechanical circuit breakers by controlling pre-current-zero wave shape

High Voltage, 2019
Mechanical circuit breakers (MCBs) are the limiting component for current injection HVDC circuit breakers. Improving their interruption performance reduces requirements for capacitance and inductance needed in the injection circuit and thus space use and
Tim Schultz, Benjamin Hammerich, Benjamin Hammerich, Lorenz Bort, Christian M. Franck, Christian M. Franck   +5 more
doaj   +1 more source

Meniscus‐guided organic semiconductor single crystals: From fluid dynamics to morphology control and multifunctional applications

FlexMat, EarlyView.
Centered on the multiscale meniscus, this review dissects mass transport in meniscus‐guided coating into parallel and lateral components. By analyzing the balance of multiple factors during crystallization, it establishes a clear morphology‐performance relationship.
Yumeng Wang, Shengnan Chen, Lutong Guo, Lujing Shao, Zhenhua Li, Hao Liu, Yanlin Song, Yali Qiao   +7 more
wiley   +1 more source

Effect of Potential Distribution of Main Shield on Internal Insulation Performance of Vacuum Interrupter

Shanghai Jiaotong Daxue xuebao
As an environmentally friendly switchgear technology, vacuum circuit breakers have a wide range of application prospects. However, both single and break vacuum circuit breakers face the issues of uneven potential distribution in the main shielding case ...
CHENG Xian, LI Guanjun, GE Guowei, DU Shuai, ZHANG Wanlong
doaj   +1 more source

Materials and Music: Selective Imperfection as a Generative Framework for Analysis, Creativity and Discovery

Interdisciplinary Materials, EarlyView.
Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
wiley   +1 more source

Effect of Ti3C2Tx MXene Incorporation on the Mechanical Performance and Microstructural Characteristics of Bulk Molding Compound Composites

Polymer Composites, EarlyView.
Graphical overview of the preparation, mechanical performance and microstructural characterization of low‐content Ti3C2Tx MXene‐reinforced BMC composites. ABSTRACT Bulk molding compound (BMC) composites are widely used in engineering applications; however, improving their mechanical response through low‐content nanoscale modification remains ...
Bilge Yılmaz, Cemal Meran, Cahit Bilgi
wiley   +1 more source

Dynamics simulation and fault characteristic analysis of permanent magnet repulsion mechanism for vacuum circuit breaker

AIP Advances
Aiming at the reliability requirements of the permanent magnet repulsion mechanism for vacuum circuit breakers, the finite element numerical analysis model of the electromagnetic force of the permanent magnet repulsion mechanism for the vacuum circuit ...
Yuntao Wang, Yugang Chen, Zixing Yan, Zemin Chai, Jinsheng Zhang, Guanlong Jia   +5 more
doaj   +1 more source

Development of Flame Retarded Battery Casings Using Glass Fiber‐Reinforced Epoxy Resin

Polymer Composites, EarlyView.
Development of flame retarded battery casings using glass fiber‐reinforced epoxy resin by exploiting the synergistic action of APP and TiO2 to promote the formation of a coherent ceramic‐phosphate char layer. ABSTRACT This study investigates the development of glass fiber‐reinforced epoxy resin composites with enhanced fire performance for application ...
Ákos Pomázi, Zsófia Kovács, Beáta Szolnoki, Gábor Szebényi, Andrea Toldy   +4 more
wiley   +1 more source

Investigation of the Simplified Equivalent Circuit Model of the Post‐Arc Sheath Stage in DC Vacuum Circuit Breakers

High Voltage, EarlyView.
ABSTRACT This paper presents a simplified equivalent circuit model (ECM) for the post‐arc sheath stage in DC vacuum circuit breakers and outlines the method for calculating circuit parameters using the particle‐in‐cell Monte Carlo collision (PIC‐MCC) method. The post‐arc sheath is modelled as a parallel combination of a variable resistor and a variable
Xubin Li, Xingyu Guo, Wen Wang, Xiaoming Liu, Minfu Liao, Jiyan Zou   +5 more
wiley   +1 more source