Results 21 to 30 of about 25,577 (241)

Power reserve control strategy of PV system for active power reserve under dynamic shading patterns

open access: yesArray, 2022
The de-loading technique in photovoltaics is used to reserve some active power for frequency regulation purposes. However, the selection of the de-loading method depends upon the shading conditions of photovoltaics.
Pankaj Verma, Tarlochan Kaur
doaj   +1 more source

A zero switch and sensorless reconfiguration approach for sustainable operation of roof‐top photovoltaic system during partial shading

open access: yesIET Renewable Power Generation, 2023
Photovoltaic (PV) roof‐top systems in real‐time environments are highly susceptible to the commonly occurring scenario of partial shading that occurs due to unavoidable conditions such as the shadow of buildings and trees.
Belqasem Aljafari   +3 more
doaj   +1 more source

Modeling PV installations under partial shading conditions [PDF]

open access: yesSN Applied Sciences, 2020
This paper deals with the development of a photovoltaic (PV) array model under partial shading conditions. Based on the one diode equivalent circuit of a PV cell, and mathematical developments proposed in literature, the authors propose a simple and accurate model of PV arrays under partial shading conditions.
Afef Bennani-Ben Abdelghani   +1 more
openaire   +1 more source

Experimental Investigation of Photovoltaic Partial Shading Losses under Different Operation Conditions

open access: yesمجلة النهرين للعلوم الهندسية, 2020
The partial shading conditions have a significant effect on the performance of Photovoltaic system and the ability of delivering energy. In this study, the impact of different partial shading on the mono crystalline (88W) PV module performance was ...
Ali H. Numan   +2 more
doaj   +1 more source

Performance and Reliability Improvement of Partially Shaded PV Arrays by One-Time Electrical Reconfiguration

open access: yesIEEE Access, 2022
Partial shading is the most unexpected scenario encountered by the arrays that degrade the performance causing power reduction, non-convex characteristics curves, losses, hotspot, module damage, and system failure. The adoption of various reconfiguration
Priya Ranjan Satpathy   +5 more
doaj   +1 more source

A Dimension-Independent Array Relocation (DIAR) Approach for Partial Shading Losses Minimization in Asymmetrical Photovoltaic Arrays

open access: yesIEEE Access, 2023
Solar photovoltaic (PV) power system consists of numerous modules connected in series and parallel to generate a certain range of voltage and current outputs.
Pradyumna Mallick   +4 more
doaj   +1 more source

Partial Shading Detection in Solar System Using Single Short Pulse of Load

open access: yesMetrology and Measurement Systems, 2017
A single photovoltaic panel under uniform illumination has only one global maximum power point, but the same panel in irregularly illuminated conditions can have more maxima on its power-voltage curve. The irregularly illuminated conditions in most cases
Bartczak Mateusz
doaj   +1 more source

Impact of Partial Shading on the P-V Characteristics and the Maximum Power of a Photovoltaic String

open access: yesEnergies, 2018
A photovoltaic system is highly susceptible to partial shading. Based on the functionality of a photovoltaic system that relies on solar irradiance to generate electrical power, it is tacitly assumed that the maximum power of a partially shaded ...
J. C. Teo   +4 more
doaj   +1 more source

Partial shading detection and hotspot prediction in photovoltaic systems based on numerical differentiation and integration of the P − V curves

open access: yesIET Renewable Power Generation, 2023
Hotspot phenomenon is an expected consequence of long‐term partial shading condition (PSC), which results in early degradation and permanent damage of the shaded cells in the photovoltaic (PV) systems.
Mohammadali Khodapanah   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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