Results 11 to 20 of about 867,842 (280)

Repeater Power Conversion Efficiency in Submarine Optical Communication Systems

open access: yesIEEE Photonics Journal, 2021
In power-limited trans-oceanic submarine systems, the electrical-to-optical (E/O) power conversion efficiency determines the amount of optical signal power generated by repeaters, which governs the cable capacity.
Xiaojun Liang   +2 more
doaj   +1 more source

Heat absorption properties of ground material for solar chimney power plants [PDF]

open access: yes, 2016
One of the major challenges to the widespread application of the solar chimney power plant is its low-power conversion efficiency because of the three technological processes involved.
Al-Azawiey, S. S., Hassan, S. B.
core   +1 more source

Hybrid Power Harvesting for Increased Power Conversion Efficiency

open access: yesIEEE Microwave and Wireless Components Letters, 2015
This work presents a cooperative power harvesting scheme, collecting power from two or more independent ambient energy sources into a single non-linear component. It is shown that the interaction of uncorrelated signals in a nonlinear device can greatly improve the conversion efficiency of the harvester.
Lorenz, Carlos   +5 more
openaire   +2 more sources

Half-Heusler Alloys for Efficient Thermoelectric Power Conversion [PDF]

open access: yesJournal of Electronic Materials, 2016
Half-Heusler (HH) phases (space group F43m, Clb) are increasingly gaining attention as promising thermoelectric materials in view of their thermal stability, scalability, and environmental benignity as well as efficient power output. Until recently, the verifiable dimensionless figure of merit (ZT) of HH phases has remained moderate near 1, which ...
Long Chen   +3 more
openaire   +2 more sources

A long-distance high-power microwave wireless power transmission system based on asymmetrical resonant magnetron and cyclotron-wave rectifier

open access: yesEnergy Reports, 2021
This paper demonstrates the analysis of a long-distance high-power microwave wireless power transmission (MWPT) system based on asymmetrical resonant magnetron and cyclotron-wave rectifier.
Biao Hu   +13 more
doaj   +1 more source

Gallium arsenide 55Fe X-ray-photovoltaic battery [PDF]

open access: yes, 2016
The effects of temperature on the key parameters of a prototype GaAs 55Fe radioisotope X-ray microbattery were studied over the temperature range -20 °C to 70 °C.
A. M. Barnett   +5 more
core   +1 more source

Increasing the conversion efficiency of KTP crystal using the pump-power technique

open access: yesIraqi Journal of Physics, 2020
In this study, the effect of pumping power on the conversion efficiency of nonlinear crystal (KTP) was investigated using laser pump-power technique. The results showed that the higher the pumping power values, the greater the conversion efficiency (η ...
Raied K. Jamal, Russul Khalil Rustum
doaj   +1 more source

Research status of replacement gases for SF6 in power industry

open access: yesAIP Advances, 2020
SF6 is widely used in the industrial field due to its stable structure and excellent properties. It is mainly used in electrical insulation equipment. Due to the boiling point of SF6, its use in extremely cold regions has been limited.
Shuangshuang Tian   +7 more
doaj   +1 more source

The Influence Factor Analysis of Symmetrical Half-Bridge Power Converter through Regression, Rough Set and GM(1,N) Model

open access: yesAxioms, 2022
Analysis of power converter performance has tended to be engineering-oriented, focusing mainly on voltage stability, output power and efficiency improvement. However, there has been little discussion about the weight relations between these factors.
Shih-Kuen Changchien, Kun-Li Wen
doaj   +1 more source

Latest Updates of Single-Junction Organic Solar Cells up to 20% Efficiency

open access: yesEnergies, 2023
Single-junction organic solar cells have reached a power conversion efficiency of 20% with narrow bandgap non-fullerene electron acceptor materials such as Y6, as well as with large band gap electron donor materials and their derivatives.
Boudia Mohamed El Amine   +5 more
doaj   +1 more source

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