Results 81 to 90 of about 916,477 (341)

A novel AC chopper integrated with active measurement of wideband impedance for wind power system

open access: yesIET Power Electronics, 2023
Large‐scale wind farms are susceptible to oscillations like any other power systems with high penetration of power electronics, whose characteristics of wideband impedance hold the key to resolving this issue.
Yan Shi   +4 more
doaj   +1 more source

Reliability and Market Price of Energy in the Presence of Intermittent and Non-Dispatchable Renewable Energies [PDF]

open access: yesarXiv, 2018
The intermittent nature of the renewable energies increases the operation costs of conventional generators. As the share of energy supplied by renewable sources increases, these costs also increase. In this paper, we quantify these costs by developing a market clearing price of energy in the presence of renewable energy and congestion constraints.
arxiv  

Near‐Field Phonon Nanoscopy and Imaging of Structural Variants in Mixed Phase BiFeO3

open access: yesAdvanced Functional Materials, EarlyView.
Nano‐Fourier transform infrared spectroscopy and scattering scanning near‐field optical microscopy imaging reveal the phonon response of nanoscale phase variants in mixed‐phase BiFeO3 (BFO). Direct mid‐infrared imaging of associated distinct vibrational signatures is used as a non‐invasive optical detection method for electrical switching of ...
Dawei Zhang   +8 more
wiley   +1 more source

Efficient Algorithms for Renewable Energy Allocation to Delay Tolerant Consumers [PDF]

open access: yesarXiv, 2010
We investigate the problem of allocating energy from renewable sources to flexible consumers in electricity markets. We assume there is a renewable energy supplier that provides energy according to a time-varying (and possibly unpredictable) supply process.
arxiv  

Renewable Sources Of Energy In Poland - Photovoltaics

open access: yesJournal of Education, Health and Sport, 2017
Babula Mateusz. Renewable Sources of Energy in Poland - photovoltaics. Journal of Education, Health and Sport. 2017;7(9):136-141. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.888780 http://ojs.ukw.edu.pl/index.php/johs/article/view/4795 The journal has had 7 points in Ministry of Science and Higher Education parametric ...
openaire   +4 more sources

Enhancing UV Stability and Charge Extraction in Organic Solar Cells with Phenyl‐Linked Aromatic Self‐Assembled Monolayer

open access: yesAdvanced Functional Materials, EarlyView.
The phenyl‐linked self‐assembled monolayer exhibits robust intrinsic stability and hole extraction capability compared to the alkyl‐linked counterparts, thus facilitating the device stability with T80 over 1000 h and efficiency of 19.7% in advancing organic solar cells.
Nan Zhang   +11 more
wiley   +1 more source

Renewable Sources Of Energy In Poland – Biogas

open access: yesJournal of Education, Health and Sport, 2018
Babula Mateusz. Renewable sources of energy in Poland – biogas. Journal of Education, Health and Sport. 2018;8(9):943-950 eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.1419519 http://ojs.ukw.edu.pl/index.php/johs/article/view/5977 https://pbn.nauka.gov.pl/sedno-webapp/works/877575 The journal has had 7 points in Ministry of ...
openaire   +4 more sources

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

Hydrophobic Deep Eutectic Solvent (DES) Design Enables Optimally Hydrated DES‐in‐Water Electrolytes for High‐Performance Bromine Redox‐Enhanced Energy Storage Systems

open access: yesAdvanced Functional Materials, EarlyView.
Faradaic charging with bromine redox chemistry shows promise for energy storage, yet its efficient use in aqueous electrolytes is hindered by water decomposition and polybromides' cross‐diffusion, leading to suboptimal cell performance. This study introduces a tetrabutylammonium bromide‐based hydrated deep eutectic electrolyte with optimized water ...
Tae Pyeong Eom   +4 more
wiley   +1 more source

Structured, Shaped, or Printed Single‐Atom Catalysts and Their Applications

open access: yesAdvanced Functional Materials, EarlyView.
This paper reviews the design and use of structured single‐atom catalysts, which integrate porous architectures with the exceptional reactivity of isolated catalytic sites. It explores fabrication strategies, advanced characterization methods, and support materials that enhance thermal stability, mechanical robustness, and operational efficiency of ...
Jiachengjun Luo   +4 more
wiley   +1 more source

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