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Register a new userModeling and Performance Analysisof Stand-Alone Solar System Using a MATLAB with MPPT
نمذجة و تحليل أداء نظام طاقة شمسي مستقل باستخدام MATLAB مع تتبع نقطة الاستطاعة العظمى
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Tishreen University ورقة بحثية
Publication date
2017
fields
Technical Architecture
and research's language is
العربية
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Shamra Editor
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إن محدودية مصادر الطاقة العالمية من الوقود الاحفوري و النووي, استوجب البحث الملّح عن مصادر طاقة بديلة. بما يحقق موازنة العرض و الطلب دون اللجوء أو التخفيف قدر الإمكان من المولدات التي تعتمد على الغازات, و الوقود الأحفوري. و تعتبر السلامة البيئية من الشروط الهامة لمصدر الطاقة, حيث أن الطلب المتزايد على مصادر الطاقة التقليدية جعل من الضروري تحسين تكلفة مصادر الطاقة غير التقليدية, و الاعتماد على الطاقة الشمسية بوصفها مصدر للحصول على الطاقة الكهربائية. يقدم البحث نموذجاً لنظام PVمع دراسة تأثير تغير شروط العمل (الإشعاع, درجة الحرارة), و بعض العوامل (المقاومة التسلسلية RS, و التفرعية RP, و عامل المثالية A) على مميزات (I-V) و (P-V), و تم وضع نموذج نظام الطاقة الكهروشمسي المستقل باستخدام MatLab, و للحصول على أعظم طاقة كهربائية يمكن توليدها من النظام الشمسي طورت عدة تقنيات لملاحقة نقطة الاستطاعة العظمى و استخدمت في هذا البحث خوارزمية P&O بتقنية MPPT, و تم مقارنة الاستطاعة المولدة المقدمة للحمل مع وجود تقنية MPPT و بدون وجودها و حساب الزيادة في الكفاءة الناتجة من استخدام هذه التقنية.
The limitations of global resources of fossil and nuclear fuel, has necessitated an urgent search for alternative sources of energy. Therefore, a new way has to be found to balance the supply and demand without resorting to coal and gas fuelled generators.Environment safety has become very important for any energy system, Increasing demand of conventional sources has further increases the need and optimizes cost of non-conventional energy sources. This paper has analyzed the development of a method for the mathematical modeling of PV System.behavior of the PV Array with series resistance model are studied in this paper. Included effects are: temperature dependence, solar radiation change, diode ideality factor and series resistance influence,and shows the mathematical modeling of stand-alone PV system and then compare withAnalysis of Perturb and Observe MPPT and without MPPT simulation of photovoltaic modules with Matlab/Simulink, And Calculate the increase in efficiency resulting from the use of technology MPPT.
References used
John Wiley & Sons ،Renewable and Efficient Electric Power Systems, Stanford University, INC.2004
H. J .M¨oller ،Semiconductors for Solar Cells .Norwood, MA :Artech House, 1993
A. Guechi and M. Chegaar, “Effects of diffuse spectral illumination on microcrystalline solar cells,” J. Electron Devices, vol. 5, pp. 116–121, 2007
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Building a photovoltaic system is the process of designing,
selecting and calculating the ratings of the equipment’s employed in
the system. This process depends on a variety of factors such as
geographical location, solar irradiation, and load re
quirements. this
paper presents a practical way to calculate the elements and
components of the Stand-Alone PV energy system, And procedure
an economic analysis for the system, will allow GUI designed by
MATLAB knowledge of these components depending on the
efficiency of the Inverter, power solar panels and capacity of
batteries in local market, taking into account the climatic factors and
hours of solar radiation in the system installation area, as well as the
cost of the system and the payback time.
This paper deals with the analysis and study of performance of solar panels, so we
choose working on the solar panel (module) MSX-50, in addition to improve his power by
tracking the maximum power point, this is done by using boost (step up) choppe
r to obtain
the largest possible capacity of solar panel.
We will determine a mathematical model equivalent to the real solar panel (not ideal)
through studying photovoltaic cells, where we will use the iterative method in addition to
the Newton-Raphson algorithm in order to determine the value serial resistance of module
Rs parallel resistance of module Rp.
As has been the implementation of perturbation and observation p&o algorithm in
addition studying and designing the circuit of step up (boost) chopper, and selection the
components (coil L, capacitor C), based on both the operation frequency f, ripple factor of
output voltage and output current .
Based on the our study, we have performed a modeling process of the solar module
MSX-50 using MATLAB/SIMULINK program, where we designed a graphical user
interface GUI to display the module characteristics and calculate resistance Rp and Rs, in
addition to build an algorithm p&o and design circuit of boost (step up) chopper.
The proposed model has been applied to the ohmic load according to the principle of
the maximum power point tracking MPPT, and discuss the results of two cases wich are
the following the solar module is connected directly to load, connected through chopper
driven by p&o algorithm.
With the increase in reliance on solar energy to produce electricity, so many maximum power point
tracking techniques for photovoltaic panels were developed to maximize the produced energy and a lot of
these are well established in the literature.
These techniques vary in many aspects such as: simplicity,
convergence speed, digital or analogical implementation, required sensors, cost, range of effectiveness, as
well as in other aspects.
This paper presents a comparative study of ten widely-adopted mppt algorithms; their performance is
evaluated from energy point of view using the simulation tool (Matlab), considering different solar
irradiance variations. Also, an economic evaluation has been made to make a comparison according to
performance and cost, to determine the optimal choice.
Since the invention of Fuzzy logic and fuzzy control, the latter has been growing in spread
and importance in many applications and devices in many life aspects. This maybe due to
the easy use of a fuzzy control system, and for being far of math co
mplications. Even if the
plant model is unknown, a self-organizing fuzzy controller (SOFC) can improve the
response of an already exist linear control table, or even can build a control table from
scratch, by assessing current performance of the controller and adjusting the control table
accordingly. This paper provides a simple article that shows how to design and use a self organizing
fuzzy controller, through a simulation example using MATLAB & Simulink
in which a variable torque loaded DC motor speed regulation is done. The simulation
showed the ability of the controller to provide a good response and decrease speed error by
a notable amount at load torque changing times. This paper can be used as textbook
material for students or researchers interested in the field of adaptive control, especially
self-organizing fuzzy control.
This research deals with improving the efficiency of solar photovoltaic (PV) power
systems using a Maximum Power Point Tracker controller (MPPT controller), based in his
work on the Maximum Power Point Tracking techniques via the direct control met
hod.
Which used to control the duty cycle of DC-DC Voltage Converter, to achieve the
photovoltaic system works at a Maximum Power Point under different atmospheric
changes of the solar insolation and ambient temperature. In this context, our work is
focused on the simulation of the components of the power generating system, such as the
photovoltaic system, DC-DC Boost Converter and a MPPT controller in Matlab/Simulink
environment. The simulating of the MPPT controller was based on several algorithms such
as: Constant Voltage algorithm, Perturb and Observe algorithm and Incremental
Conductance algorithm by using Embedded MATLAB function. The simulation results
showed the effectiveness of the MPPT controller to increase the photovoltaic system power
compared with non-use of a MPPT controller. The results also showed the best
performance of MPPT controller based on Perturb and Observe and Incremental
Conductance algorithm, compared with constant voltage algorithm in tracking the
Maximum Power Point under atmospheric changes.
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