Results 81 to 90 of about 66,003 (314)

Impedance modelling and parametric sensitivity of a VSC-HVDC system: New insights on resonances and interactions [PDF]

open access: yes, 2018
Pervasiveness of power converters in the electric power system is expected in the future. Such large penetration will change the current power system dynamics leading to uncertain, unexpected, and potentially critical responses.
Agbemuko, A. J.   +3 more
core   +3 more sources

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

open access: yesAdvanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief   +12 more
wiley   +1 more source

Experimental validation of a novel architecture based on a dual-stage converter for off-board fast battery chargers of electric vehicles [PDF]

open access: yes, 2018
The experimental validation of a novel architecture of an off-board, three-phase fast battery charger for electric vehicles (EVs) with innovative operation modes is presented in this paper.
Afonso, João L.   +4 more
core   +2 more sources

Optical Manipulation of Multiferroic Phases in BiFeO3 Thin Films

open access: yesAdvanced Materials Interfaces, EarlyView.
At the strain‐driven morphotropic phase boundary, optical control over the multiferroic rhombohedral and tetragonal phase mixture is demonstrated using above‐bandgap light illumination. The photoinduced charge carriers modify the electrostatic environment and induce the conversion into a single tetragonal phase.
Bixin Yan   +7 more
wiley   +1 more source

An extensive analysis of power converter architectures for grid-connected solar photovoltaic driven electric vehicles (EVs)

open access: yesEngineering Science and Technology, an International Journal
Electric vehicles (EVs) are growing in popularity so, power electronic converter research and development is necessary to provide high power, low cost, as well as efficient methods for EV battery charging. Two kinds of EV chargers exist i.e. on-board and
Alok Jain, Suman Bhullar
doaj   +1 more source

Multi-pole voltage source converter HVDC transmission systems [PDF]

open access: yes, 2016
This study connects several modular multilevel converters to form multi-pole voltage source converter highvoltage dc (VSC-HVDC) links which are suited for bulk power evacuation, with increased resiliency to ac and dc network faults.
Ased, Grain Philip, Williams, Barry W.
core   +1 more source

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

open access: yesAdvanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard   +7 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

New method for designing parallel loaded DC-AC power converters [PDF]

open access: yesAIP Conference Proceedings, 2018
In current work is presented one comprehensive method for design of resonant parallel loaded DC-AC power converters (inverters). The method is based on a new simplified approach to analysing such power devices. It is based on an assumed resonance action in finding connections between input and output variables regardless of other modes of operation ...
openaire   +1 more source

Novel Topology for Four-Quadrant Converter [PDF]

open access: yes, 1999
Particle accelerators, like the LHC (Large Hadron Collider), make use of true bipolar power converters to feed superconducting magnets. Moreover, the LHC imposes that most converters must be installed underground.
Bordry, Frederick   +5 more
core  

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