Results 21 to 30 of about 284,425 (264)

Prospect of Green Hydrogen Generation from Hybrid Renewable Energy Sources: A Review

open access: yesEnergies, 2023
Hydrogen is one of the prospective clean energies that could potentially address two pressing areas of global concern, namely energy crises and environmental issues.
Asim Kumar Sarker   +3 more
doaj   +1 more source

Electrochemical Properties of Nitrogen and Oxygen Doped Reduced Graphene Oxide

open access: yesEnergies, 2020
Carbon nanostructures are promising electrode materials for energy storage devices because of their unique physical and chemical properties. Modification of the surface improves the electrochemical properties of those materials because of the changes in ...
Sean J. Hartmann   +3 more
doaj   +1 more source

Magnetic Field-Based Induction Machine Modeling Incorporating Space and Time Harmonic Effects

open access: yesIEEE Access
Integration of the impacts of time and space harmonics simultaneously during the design stages of inverter-fed induction machines (IMs) is crucial for the accurate calculation of electromagnetic (EM) torque and ripples.
Buddhika De Silva Guruwatta Vidanalage   +3 more
doaj   +1 more source

Hybrid energy harvesting from keyboard

open access: yes2011 International Conference on Energy Aware Computing, 2011
This paper presents a hybrid energy harvester which combines piezoelectric (PZT) and electromagnetic (EM) transduction mechanisms to scavenge vibration energy from a keyboard. The system comprises of improvements to the dome structure presented in previous studies, in which only PZT transduction mechanism was used to harvest 16.95 μW of experimentally ...
Levent Beker   +3 more
openaire   +2 more sources

Driving the Future: An Analysis of Total Cost of Ownership for Electrified Vehicles in North America

open access: yesWorld Electric Vehicle Journal
As the number of electric vehicles (EVs) on North American roads continues to rise, driven by the shift toward sustainable transportation, understanding the economic implications of this transition is crucial.
Patrycja Soszynska   +5 more
doaj   +1 more source

Comparison of Three Methods for Wind Turbine Capacity Factor Estimation

open access: yesThe Scientific World Journal, 2014
Three approaches to calculating capacity factor of fixed speed wind turbines are reviewed and compared using a case study. The first “quasiexact” approach utilizes discrete wind raw data (in the histogram form) and manufacturer-provided turbine power ...
Y. Ditkovich, A. Kuperman
doaj   +1 more source

Optimal Direct Parameter Extraction of a Lithium-Ion Equivalent Circuit Cell Model for Electric Vehicle Application

open access: yesEnergies
The lithium-ion cell model is the heart of the battery management system—a more accurate model ensures operational safety, extends pack lifetime, and provides better tracking of battery charge and health.
Philip Lewoc   +3 more
doaj   +1 more source

Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

open access: yesAPL Materials, 2016
To bring perovskite solar cells to the industrial world, performance must be maintained at the photovoltaic module scale. Here we present large-area manufacturing and processing options applicable to large-area cells and modules.
Stefano Razza   +3 more
doaj   +1 more source

Hybrid energy governance

open access: yesVeille énergie climat, 2012
This Article develops a novel theory of energy governance and uses it to assess how institutional innovation can help meet critical challenges. Energy law is substantively complex and deeply fragmented. Each energy sector - including fuel extraction and pipelines, electricity generation and transmission, and transportation - has its own legal regime ...
Hari M. Osofsky, Hannah Jacobs Wiseman
openaire   +4 more sources

Low-temperature strain-free encapsulation for perovskite solar cells and modules passing multifaceted accelerated ageing tests

open access: yesNature Communications
Perovskite solar cells promise to be part of the future portfolio of photovoltaic technologies, but their instability is slow down their commercialization.
Paolo Mariani   +19 more
doaj   +1 more source

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