Results 1 to 10 of about 55,531 (178)

Importance of Hydroxide Ion Conductivity Measurement for Alkaline Water Electrolysis Membranes

open access: yesMembranes, 2022
Alkaline water electrolysis (AWE) refers to a representative water electrolysis technology that applies electricity to synthesize hydrogen gas without the production of carbon dioxide.
Jun Hyun Lim   +6 more
doaj   +1 more source

High Impedance Fault Detection in Power Transmission Lines Using Hilbert Transform and Instantaneous Frequency [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2023
Power transmission lines are vital components of today's power systems. These power lines transmit the electricity produced in power plants in high volume and with very low losses to distant areas so that it can be reached to consumer through ...
Hassan Abniki   +3 more
doaj   +1 more source

Topology and Impedance Identification Method of Low-Voltage Distribution Network Based on Smart Meter Measurements

open access: yesFrontiers in Energy Research, 2022
In recent years, distributed photovoltaic facilities and distributed energy storage are widely connected to a low-voltage distribution network, which makes the topology of the low-voltage distribution network change faster, and the online identification ...
Li Tong, Weijian Chai, Dongqi Wu
doaj   +1 more source

Electrical impedance tomography [PDF]

open access: yesAnnals of Translational Medicine, 2018
Continuous assessment of respiratory status is one of the cornerstones of modern intensive care unit (ICU) monitoring systems. Electrical impedance tomography (EIT), although with some constraints, may play the lead as a new diagnostic and guiding tool for an adequate optimization of mechanical ventilation in critically ill patients.
Lobo, Beatriz   +3 more
openaire   +3 more sources

Modification of micro/mesoporous carbon synthesis method from well decomposed peat using ZnCl2 additional activation step

open access: yesElectrochemistry Communications, 2023
ZnCl2 activation method was used to synthesize micro- and mesoporous carbon material from Estonian well decomposed peat. The synthesized material with the ZnCl2 activation step has an SBET value of 1270 m2 g─1, compared to the SBET value of 270 m2 g─1 ...
M. Paalo   +4 more
doaj   +1 more source

Impact of STATCOM and HSFCL on the performance of distance relays in transmission network [PDF]

open access: yesمجله مدل سازی در مهندسی, 2022
In this paper, the effect of installing a hybrid superconducting fault current limiter on the apparent impedance seen by the distance relay in power systems compensated with STATCOM has been analyzed.
ZAHRA MORAVEJ   +2 more
doaj   +1 more source

The Effect of Grid-Connected Converter Control Topology on the Diagonal Dominance of Converter Output Impedance

open access: yesIEEE Open Access Journal of Power and Energy, 2023
This work investigates the effect of grid-connected converter topology on equivalent converter output impedance with a specific focus on the diagonal dominance of the impedance matrix across a frequency range.
Callum Henderson   +5 more
doaj   +1 more source

Three-dimensional electrical impedance tomography [PDF]

open access: yesNature, 1996
The electrical resistivity of mammalian tissues varies widely and is correlated with physiological function. Electrical impedance tomography (EIT) can be used to probe such variations in vivo, and offers a non-invasive means of imaging the internal conductivity distribution of the human body. But the computational complexity of EIT has severe practical
Metherall, P.   +3 more
openaire   +3 more sources

Improved Interface Circuit for Enhancing the Power Output of a Vibration-Threshold-Triggered Piezoelectric Energy Harvester

open access: yesEnergies, 2020
The vibration-threshold-triggered piezoelectric energy harvester is a new type of piezoelectric energy harvester with a two-stage structure, which can generate electricity in a low frequency environment and recognize vibration intensity at the same time.
Jiqiang Liu   +5 more
doaj   +1 more source

Paper-based methodology for investigation of triboelectric nanogenerators

open access: yesEnergy Reports, 2019
Triboelectric nanogenerators (TENGs) have been investigated as a promising methodology to harvest mechanical energy into electricity. The matching impedance and the transient property of TENGs are important for their practical application.
Zhiyuan Zhu   +6 more
doaj   +1 more source

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