Results 51 to 60 of about 225,893 (305)

Calculation method for equivalent model of AC filters in HVDC transmission system

The Journal of Engineering, 2019
AC filter is an important part of HVDC system, which can restrain the AC-side harmonics effectively and compensate for the reactive power consumed by converter station.
Lv Wentao, Xu Zeyu, Wang Chaoliang, Shen Chen, Jiang Daozhuo   +4 more
doaj   +1 more source

Approach of Passive Filters using NSGA II in industrial installations: Part I [PDF]

, 2018
The optimization of passive filters in industrial systems has been presented by different computational methods. The objective of this paper is to develop a computational algorithm with NSGA II to select the configuration and design parameters of a set ...
Carvajal, T. L. (Tirso), Freitas, C. A. (Carlos), Junior, M. F. (Milton), Júnior, J. D. (Jorge), Leite, J. C. (Jandecy), Nascimento, M. H. (Manoel)   +5 more
core  

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

The condition monitoring of the passive harmonic filters in rail way DC sub stations [PDF]

, 2013
The condition monitoring of the passive 12th and 24th harmonic filters in the DC sub station employing 12 pulse passive rectification plays the vital role of suppressing generated harmonics. The railway service of South Africa (Transnet) is confronted by
Breedt, Petrus Gerhardus
core  

Analysis and filtering of phase noise in an optical frequency comb at the quantum limit to improve timing measurements

, 2014
The sensitivity of homodyne timing measurements with femtosecond lasers is only limited by the amplitude and phase noise. We describe a novel method to analyze the phase noise of a Ti:Sapph oscillator relative to the standard quantum limit. The broadband
Fabre, Claude, Jacquard, Clément, Schmeissner, Roman, Thiel, Valerian, Treps, Nicolas   +4 more
core   +2 more sources

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

Advanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay, J. Schneider, P. Harrison, S. Kumar   +3 more
wiley   +1 more source

Reflectionless Bandpass Filters Using Two Dual Bandpass Filters

IET Microwaves, Antennas & Propagation
A reflectionless filter is designed based on the dual‐circuit theory. Two types of reflection‐less filters are presented for this methodology. The proposed configuration consists of two dual branches. Two dual‐bandpass filters are used in two branches of
Mohammad‐Mahdi Taskhiri, Mohammad Khalaj‐Amirhosseini   +1 more
doaj   +1 more source

Coefficients Calculation in Pascal Approximation for Passive Filter Design

Computation, 2018
The recently modified Pascal function is further exploited in this paper in the design of passive analog filters. The Pascal approximation has non-equiripple magnitude, in contrast of the most well-known approximations, such as the Chebyshev ...
George B. Kasapoglu, Evangelia A. Karagianni, Michael E. Fafalios, Ioannis A. Koukos   +3 more
doaj   +1 more source

Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release

Advanced Engineering Materials, EarlyView.
Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro, Manuel J. Carvajal Loaiza, Rahaf Homssi, Vanessa Restrepo   +3 more
wiley   +1 more source

Ladder broadband damping filters

Известия высших учебных заведений: Проблемы энергетики
RELEVANCE. The large proliferation of various nonlinear loads has led to serious power-quality related problems in power systems. THE PURPOSE. In this paper, we consider design procedure of broadband passive filters with flat frequency characteristics.   
V. P. Dovgun, D. E. Egorov, N. P. Boyarskaya, A. F. Sinyagovskiy, N. A. Ryzhov   +4 more
doaj   +1 more source