Results 121 to 130 of about 57,952 (266)

Space charge and charge trapping characteristics of cross-linked polyethylene subjected to ac electric stresses

open access: yes, 2006
This paper reports on the result of space charge evolution in cross-linked polyethylene (XLPE) planar samples of approximately 220 ?m thick. The space charge measurement technique used in this study is the PEA method.
Tanaka, Y   +5 more
core  

Analysis of voltage dynamics within current control time-scale in a VSC connected to a weak AC grid via series compensated AC line

open access: yes
In this paper, an analytical approach is proposed to analyse the small-signal stability associated with the voltage dynamics of three paths within current control of a VSC connected to a weak AC grid via series compensated AC line: the PLL, active ...
Santos-Mugica, Maider   +2 more
core   +1 more source

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade   +7 more
wiley   +1 more source

Tailoring Li‐ion Storage and Transport in Two‐Dimensional Conjugated Metal‐Organic Frameworks via Precise Nitrogen Incorporation

open access: yesAdvanced Functional Materials, EarlyView.
Two nitrogen‐doped 2D conjugated metal‐organic frameworks (2D c‐MOFs, namely Cu‐Nx‐OHBA, x = 2 or 4) are synthesized, featuring precise nitrogen incorporation via rational ligand design. The Cu‐Nx‐OHBA 2D c‐MOFs are largely tailorable by varying skeletal nitrogen density, with respect to electrical conductivity, Li‐storage capacitance, and Li‐transport
Xiangyu Li   +7 more
wiley   +1 more source

Three-port ac-dc bidirectional converter with V2G reactive power support

open access: yes, 2017
2017 IEEE Power and Energy Conference at Illinois, PECI 2017, Champaign, IL, USA, 23-24 February 2017This paper presents an isolated three-port ac-dc converter with vehicle-to-grid (V2G) reactive power capability.
K. H. Loo   +7 more
core   +1 more source

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

open access: yesAdvanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota   +6 more
wiley   +1 more source

Comparison of two-type corona plasma energization techniques: ultra-short and DC/AC power sources

open access: yes, 2005
This paper discusses some critical issues when developing industrial corona plasma systems. Based on streamer generation and interaction between power sources and reactors, the power conditions for streamer corona plasma generation can be basically ...
Liu, Zhen   +4 more
core   +1 more source

Design of an AC/DC Converter with using Supercapacitors as Energy Storage

open access: yesRMUTL Engineering Journal, 2016
This paper presents a design of a high power factor AC/DC converter with using supercapacitors as energy storage.The proposed system consists of a cuk topology based AC/DC power converter and a bidirectional DC/DC converter which is connected between the
พิสิทธิ วิสุทธิเมธีกร   +1 more
doaj  

Multimodal Perception and Machine Learning‐Empowered Human Machine Interfaces With Double‐Network Hydrogel Fibers

open access: yesAdvanced Functional Materials, EarlyView.
This work develops polyacrylamide‐alginate (PAM‐Alg) double‐network hydrogel fibers for multimodal perception and intelligent human‐machine interfaces. The covalent‐ionic network provides high strength, toughness, and stable conductivity. Easily woven into wearables and integrated with soft robots, the fibers enable object and temperature recognitions ...
Yujue Yang   +10 more
wiley   +1 more source

Coupling Characteristics and Construction Method of Single-AC Multi-DC Hybrid Grid

open access: yesEnergies
In regions with concentrated load centers in China, the AC transmission network is dense, leading to challenges such as difficulties in power flow control and excessive short-circuit currents.
Xingning Han   +5 more
doaj   +1 more source

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