نتایج جستجو برای: partial shading

تعداد نتایج: 237053  

Journal: :Protection and Control of Modern Power Systems 2021

Abstract A large portion of the available power generation a photovoltaic (PV) array could be wasted due to partial shading, temperature and irradiance effects, which create current/voltage imbalance between PV modules. Partial shading is phenomenon occurs when some modules in receive non-uniform irradiation dust, cloudy weather or shadows nearby objects such as buildings, trees, mountains, bir...

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...

2015
Sarbani Mukherjee Subrata Banerjee

In a conventional grid connected photovoltaic system employing centralized inverter with long strings connected across dc-link, the performance of the plant in terms of power generation and efficiency is not optimal especially during partial shading and/or panel mismatch conditions. To improve the power yield during such conditions, a splitmultistring configuration employing 3Level Neutral Poin...

The performance of photovoltaic (PV) systems is highly dependent on environmental conditions. Due to probable changes in environmental conditions, the real-time control of PV systems is essential for exploiting their maximum possible power. This paper proposes a new method to track the maximum power point of PV systems using the moth-flame optimization algorithm. In this method, the PV DC-DC co...

Journal: :Anais do VI Simpósio Brasileiro de Sistemas Elétricos 2022

The power loss in a photovoltaic array under identical partial shading pattern is proportional to the percentage of shading. This makes sense, as depends on solar irradiance generate electrical energy. However, it tacitly assumed that maximum partially shaded PV always decreases intensity increases. although poorly documented, appears literature this may not be case. investigation characteristi...

Journal: :Energies 2021

During the day, photovoltaic (PV) systems are exposed to different sunlight conditions in addition partial shading (PS). Accordingly, maximum power point tracking (MPPT) techniques have become essential for PV secure harvesting possible from modules. In this paper, optimized control is performed through application of relatively newly developed optimization algorithms under Partial Shading (PS)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم 1392

سازند پابده در برش دره شهر شامل 260متر شیل، شیل آهکی، مارن و آهک می باشد. مطالعات انجام شده بر روی فرامینیفرهای پلانکتون منجر به شناسایی و ارائه تعداد 12 بیوزون شده است. این بیوزون ها عبارتند از: بیوزون شماره یک: parasubbotina pseudobulloides partial-range zone ، بیوزون شماره دو: subbotina triloculinoides partial-range zone، بیوزون شماره سه: morozovella angulata partial-range zone ، بیوزون شمار...

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