نتایج جستجو برای: photovoltaic array
تعداد نتایج: 155243 فیلتر نتایج به سال:
In this article, the power generation of a concentrated space solar station (SSPS) is enhanced by current-injected total-cross-tied (TCT-CI) photovoltaic (PV) array. First, mathematical model TCT-CI–connected PV array established. Second, arrays with several common topologies and TCT-CI topology are simulated analyzed using MATLAB/Simulink. At last, comparative experiments conducted for TCT und...
Fault identification in Photovoltaic (PV) array is a contemporary research topic motivated by the higher penetration levels of PV systems recent electrical grids. Therefore, this work aims to define an optimal Machine learning (ML) structure automatic detection and diagnosis algorithm for common faults, namely, permanent (Arc Fault, Line-to-Line, Maximum Power Point Tracking unit failure, Open-...
This paper presents a grid connected photovoltaic system, which acts as both power generator and active power filter (APF), based on Flying Capacitor Multicell (FCM) converter. Increase in the number of output voltage levels, natural self-balancing of flying capacitors and dc link voltage and lower power rating of components are the main futures of FCM converter compared with conventional multi...
This paper presents a grid connected photovoltaic system, which acts as both power generator and active power filter (APF), based on Flying Capacitor Multicell (FCM) converter. Increase in the number of output voltage levels, natural self-balancing of flying capacitors and dc link voltage and lower power rating of components are the main futures of FCM converter compared with conventional multi...
The optimal location and orientation of a photovoltaic array is not sufficient to produce the maximum energy generation. The shadows are responsible for power losses. These can be reduced by the following: changing the type of PV cell used, the configuration of the bypass diodes, and also the dimension or the limits of adjustment in the MPP inverter search. In this paper, different scenarios ha...
many mobile and off-grid devices include electronics and other electrical consumers like servo drives, which need a quite low supply power. since the price for photovoltaic modules drops continuously, photovoltaic power supply is interesting in more and more applications. in solar powered systems, a battery is needed to store energy for the night and cloudy periods. the power electronics of suc...
This paper deals with the analysis, design and control of a small power standalone solar photovoltaic (SPV) generating system. A PV array of 33V-43.2V is taken as an input and its output voltage is achieved as 360V dc using a flyback converter. The battery is charged at this voltage and using a single-phase voltage source inverter (VSI) it is converted into a single phase ac of 220Vac, 50 Hz. A...
This paper presents a comparative study between two proposed size optimization methods based on two battery’s models. Simple and complex battery models are utilized to optimally size a standalone photovoltaic system. Hourly meteorological data are used in this research for a specific site. Results show that by using the complex model of the battery, the cost of the system is reduced by 31%. In ...
Ferroelectric absorbers, which promote carrier separation and exhibit above-gap photovoltages, are attractive candidates for constructing efficient solar cells. Using the ferroelectric insulator BaTiO3 we show how photogeneration and the collection of hot, non-equilibrium electrons through the bulk photovoltaic effect (BPVE) yields a greater-than-unity quantum efficiency. Despite absorbing less...
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