نتایج جستجو برای: photovoltaic array

تعداد نتایج: 155243  

2015
F. M. Oliveira S. A. O. Silva F. R. Durand L. P. Sampaio

This paper deals with a study of a maximum power point tracking (MPPT) technique based on the Particle Swarm Optimization (PSO) method, which is applied to a single-phase grid-tied photovoltaic system. Since photovoltaic panels have nonlinear voltage-current characteristic curves, when they are submitted to partial shading conditions, it is possible appear distinct local and global maximum powe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یاسوج - دانشکده علوم 1391

in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...

2014
AHMED M. OTHMAN MAHDI M. El-ARINI Ahmed M. Othman Mahdi M. El-Arini Ahmed Fathy

In the recent years, the solar energy becomes one of the most important alternative sources of electric energy, so it is important to improve the efficiency and reliability of the photovoltaic (PV) systems. Maximum Power Point Tracking (MPPT) plays an important role in photovoltaic power systems because it maximize the power output from a PV system for a given set of conditions, and therefore m...

2011
S Prabhakar Karthikeyan Nitish Chandra Mohamed Raihan Manish Jain

School of Electrical Engineering, VIT University. Vellore – 632014. Tamilnadu. India In this paper, we present a novel maximum power point tracking method for a photovoltaic system consisting of a photovoltaic panel with a power electronic converter; the whole is feeding a battery. This maximum power point depends on the temperature and irradiation conditions. A robust control using a PI regula...

2016

Choosing and implementing a Maximum Power Point Tracking (MPPT) algorithm in a photovoltaic (PV) system, along with choosing the power converter, constitutes the fundamental basic capabilities of a photovoltaic system. MPPT techniques are implemented in photovoltaic systems to achieve full utilization of PV array output power. Today there is a wide variety of MPPT algorithms, each one has its a...

2014
Clifford W. Hansen Katherine A. Klise Joshua S. Stein Yuzuru Ueda Keiichiro Hakuta

Calibration of a photovoltaic module performance model currently relies on measurements of electrical output taken with the module outdoors on a two-axis tracker, or indoors using a solar simulator. These measurements require expensive infrastructure. By contrast, measuring electrical performance for systems outdoors on fixed racking is substantially cheaper, yet no method currently exists to t...

2014
Bing Zhu Henerica Tazvinga Xiaohua Xia

The photovoltaic-diesel-battery (PDB) hybrid system is proposed previously to satisfy power requirements in some remote areas locating out of national power grid. However, to dispatch the uses of different components in PDB hybrid system remains a problem. In this paper, mathematical model of the PDB hybrid system is transformed into an MIMO linear statespace form, and model predictive control ...

2014
Chia Seet Chin Prabhakaran Neelakantan Soo Siang Yang Bih Lii Chua Kenneth Tze Kin Teo

Maximum power point tracking algorithm is widely implemented in photovoltaic system to maximize the PV array output power. In general, Perturb and Observe (P&O) is simple thus being selected to continuously track the array maximum power point (MPP). Under uniform solar irradiance, PV array characteristic is non-linear and consisting only one MPP along the functional operating voltage. However, ...

Journal: :journal of artificial intelligence in electrical engineering 2015
alireza tofigh rihani majid ghandchi

using photovoltaic systems is gradually expanded by increasing energy demand. abundance and availability of this energy, has turned to one of the most important sources of renewable energy. unfortunately, photovoltaic systems have two big problems: first, those have very low energy conversion efficiency (in act between 12 and 42 percent under certain circumstances). second, the power produced b...

2015
Naehyuck Chang Massoud Pedram Hyung Gyu Lee Yanzhi Wang Younghyun Kim

© Springer Science+Business Media Dordrecht 2016 C.-M. Kyung (ed.), Nano Devices and Circuit Techniques for Low-Energy Applications and Energy Harvesting, KAIST Research Series, DOI 10.1007/978-94-017-9990-4_6 Abstract This chapter introduces a reconfigurable photovoltaic (PV) cell array for adaptive and fault-tolerant energy harvesting in view of component modeling, architectures, properties, ...

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