نتایج جستجو برای: partial shading condition

تعداد نتایج: 542060  

Journal: :Energies 2022

Partial shade condition is a significant factor contributing to the PV panel performance in mismatch losses and power generation. The technique suggested this study allows physical rearrangement of distribute on entire array. MPPT, selecting suitable inverter topology, or reconfiguration enhances panel. This proposes new dispersing method, novel dispersion (NSD). It compares NSD method with con...

2017
Kari Lappalainen Seppo Valkealahti

Mismatch losses is a major issue in the photovoltaic (PV) system and are mainly caused by partial shading; largest mismatch losses are caused by sharp shadows. These shadows are a typical problem for rooftop and residential installations. In large-scale PV plants, partial shading is mostly caused by moving clouds which produce gentle irradiance transitions causing typically only minor irradianc...

Journal: :Jurnal Techno Bahari 2023

Optimasi Maximum Power Point Tracking (MPPT) merupakan aspek penting dalam pengembangan sistem fotovoltaik (PV) untuk memaksimalkan pengambilan daya dari panel surya. Dalam penelitian ini, kami memfokuskan pada optimasi MPPT PV yang terhubung secara series-paralel menggunakan metode Perturb and Observe (P&O). Kami mengidentifikasi bahwa menghadapi tantangan berbeda dibandingkan dengan indiv...

Journal: :Energy Engineering 2022

This paper develops a real-time PV arrays maximum power harvesting scheme under partial shading condition (PSC) by reconfiguring using Aquila optimizer (AO). AO is based on the natural behaviors of in capturing prey, which can choose best hunting mechanism ingeniously and quickly balancing local exploitation global exploration via four methods Aquila: choosing searching area through high soar w...

2015
Khaled Matter Hala J. El-Khozondar Rifa J. El-Khozondar Teuvo Suntio

renewable energy due to the easy access to the source. One drawback in this system is achieving the maximum efficiency of the system. The photovoltaic (PV) cell is the fundamental unit in the power conversion of the solar system. The extracted maximum output power of PV cell reduces when it exposes to partial shading causing remarkable reduction in the efficiency of the system. In this work, PV...

2008
DEZSO SERA YAHIA BAGHZOUZ

It is a well-documented fact that partial shading of a photovoltaic array reduces it output power capability. However, the relative amount of such degradation in energy production cannot be determined in a straight forward manner, as it is often not proportional to the shaded area. This paper clarifies the mechanism of partial PV shading on a number of PV cells connected in series and/or parall...

2015
H. MEKKI H. SALHI

In this paper, an arti…cial neural network based-model (ANNBM) is introduced for partial shading detection losses in photovoltaic (PV) panel. A Multilayer Perceptron (MLP) is used to estimate the electrical outputs (current and voltage) of the photovoltaic module using the external meteorological data : solar irradiation G (W/m2) and the module temperature T (μrC). Firstly, a database of the BP...

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