Results 41 to 50 of about 2,175 (306)
High current interruption in vacuum circuit breakers [PDF]
Proceedings of 17th International Symposium on Discharges and Electrical Insulation in Vacuum, 1997 The aim of this project was to find a correlation between contact gap length and switching behavior of a vacuum circuit breaker. A large number of interruption experiments were executed in a vacuum chamber with butt type contacts made of Cu, CuCr 50/50 and AgWC. The currents to be interrupted varied from 2.5 to 32 kA.
Binnendijk, M. +4 more
openaire +2 more sources
Optimal Design of Insulation of 3.6kV Vacuum Interrupter [PDF]
, 2023 This paper compares and analyzes the insulation structure of the vacuum interrupter, focusing on the influence of the mechanical characteristics and the structure of the shield on the insulation, and establishes an electric field calculation model for ...
Yang, Lifan
core +2 more sources
Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride
Advanced Functional Materials, EarlyView.State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley +1 more source
Research on Influence Factors and Acceleration Methods of Current Commutation
IEEE Access, 2020 The vacuum interrupter is widely used due to the advantages of no arc-extinguishing medium and high insulation strength. However, the arc voltage generated by the commonly used CuCr contacts is low.
Liyan Zhang +5 more
doaj +1 more source
Design and Implementation of an Auto-Oriented Bidirectional ZCS Hybrid Circuit Breaker
IEEE Access, 2021 To protect power systems from severe short circuit faults, the zero-current switching (ZCS) technique is widely accepted due to its fast interruption speed.
Zhuangxian Jiang +5 more
doaj +1 more source
, 1899 Maxwell\u27s theoretical deduction, as to the propagation of electric and magnetic energy by means of vibrations of the ether, was established experimentally by Hertz in 1887. This was a oulminative master stroke ending the two hundred years old problem,
Montchyk,, Price,, Sickman,
core +3 more sources
Electroactive Liquid Crystal Elastomers as Soft Actuators
Advanced Functional Materials, EarlyView.Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley +1 more source
International Transactions on Electrical Energy SystemsLarge-capacity high voltage direct current circuit breakers (HVDC CBs) are critical equipment for achieving reliable operation of future multiterminal HVDC systems.
Siyuan Liu +5 more
doaj +1 more source
Adaptive 4D‐Printed Vascular Stents With Low‐Temperature‐Activated and Intelligent Deployment
Advanced Functional Materials, EarlyView.Microarchitected coronary artery stents were fabricated using a polycaprolactone (PCL)‐based shape memory polymer (SMP) composite via projection micro‐stereolithography (PµSL) 4D printing. By incorporating diethyl phthalate (DEP) as a plasticizer, the thermal transition temperature (Ttran) was modulated to about 37°C, enabling rapid and autonomous ...
Yannan Li +12 more
wiley +1 more source
Advanced Functional Materials, EarlyView.It is shown that interfaces between organic and inorganic layers govern long‐range stacking disorder and in‐plane anisotropy in 2D metal‐halide perovskites. By comparing single‐cation AB‐AB and ordered mixed‐cation ABCD‐ABCD stackings, SCXRD reveals enhanced mosaicity, while optics confirm high birefringence.
Yixuan Dou +6 more
wiley +1 more source