Results 81 to 90 of about 17,485,030 (293)

A combined optical, thermal and electrical performance model of a Building Integrated Photovoltaic/Thermal Concentrator (BIPVTC) [PDF]

open access: yes, 2011
The electrical output of concentrating photovoltaic devices is significantly affected by the temperature of the photovoltaic cells. The ability to actively cool photovoltaic cells under concentrated radiation allows their electrical efficiency to be ...
Carson, James K.   +7 more
core   +1 more source

Stability analysis and admittance reshaping for PQ inverters with different power control methods

open access: yesInternational Journal of Electrical Power & Energy Systems
PQ inverters possess the advantage of flexible control of power injection. However, the system stability of PQ inverters is affected by different power control methods.
Bao Xie   +4 more
doaj   +1 more source

Model Based Study of Crop Evapotranspiration under Canopy Shading

open access: yesAgronomy, 2019
California has some of the key agricultural regions in the United States. One of these key regions, San Joaquin Valley, frequently experiences severe droughts leading to shortage of irrigation water.
Qiang Yu   +4 more
doaj   +1 more source

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

open access: yesAdvanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang   +14 more
wiley   +1 more source

Electrical design for a 10kW photovoltaic trough concentrator system installed at the Murdoch University South Street Campus [PDF]

open access: yes, 2010
The Electrical design of the 10kW Photovoltaic (PV) Trough Concentrator System involves the use of equipment from the original Rockingham Campus PV system to achieve the aim of exporting power to the South West Interconnected System (SWIS) electrical ...
Edwards, Reginald
core  

Photovoltaic System Design and Performance [PDF]

open access: yes, 2019
This editorial summarizes the collection of papers in the Special Issue entitled Photovoltaic System Design and Performance, which was published in MDPI’s Energies journal.
Wilfried van Sark   +3 more
core   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald   +7 more
wiley   +1 more source

PWM–PFM Hybrid Control of Three-Port LLC Resonant Converter for DC Microgrids

open access: yesEnergies
This article proposes a high-efficiency isolated three-port resonant converter for DC microgrids, combining a dual active bridge (DAB)–LLC topology with hybrid Pulse Width Modulat-Pulse Frequency Modulation (PWM-PFM) phase shift control.
Yi Zhang   +5 more
doaj   +1 more source

Off-grid photovoltaic system for illumination

open access: yesResearch in Agricultural Engineering, 2015
The off-grid photovoltaic (PV) system with batteries and with the LED light source was constructed and tested in in laboratory conditions. The PV system is used for emergency illumination and it is independent of the electric grid.
P. Kouřím, M. Libra, V. Poulek
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

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