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A DETAILED MATLAB MODELING OF PHOTOVOLTAIC MODULE
1
USHA MANDADAPU, 2S. VICTOR VEDANAYAKAM, 3K.THYAGARAJAN
1
Full-Time Ph.D scholar in Madanapalle Institute of Technology And Science, Physics Department, A.P
2
Assistant Professor in Madanapallee Institute of Technology and Science, Physics Department, A.P
3
Associate Professor in JNTUCEP, Physics Department, Pulivendula, A.P
Abstract— This paper concerns about the detailed MATLAB modeling of solar module using simulink. In this paper
simulink PV 1-D model was developed, using the basic equations. To validate the simulated model, simulated results are
compared with the KD325GX-LFB and KD330GX-LFB PV modules. The MATLAB program gives the information about the
behavior of the practical PV module, under different atmospheric conditions. The single diode simulink models are simulated
at different operating conditions i.e. at the temperature of 250 C and 1000W/m2 irradiance and at the temperature 200 C and
800W/m2.To analyze and validate the simulation models, I-V and P-V characteristics obtained from the MATLAB models are
compared with the experimental results.
Keywords— Solar PV module, Single diode, Simulink, Irradiance, Temperature.
cells connected in series and parallel forms the PV
module and the group of modules forms the solar PV
array [4].
All PV arrays are connected with the inverter by this
DC power can be converted to AC power, which will
be utilized by the loads like light, motor etc.
I. INTRODUCTION
Increase of population and industrialization leads to
tremendous use of power. Continuous use of fossil
fuels, for the power production leads to the reduction
in the fuel deposits and drastically effects the
environment and causes to the global warming.
Increase of utilization of renewable energy like solar
energy, wind energy is growing from last two decades.
A huge attention is towards the conversion and storage
of solar energy due to green and environmental
friendship, technical improvements, Increase of
efficiency.
Solar photo voltaic systems are made with silicon
materials. A Solar cell works on the principle of
photovoltaic effect [1]. A single solar cell can generate
less power in the range of 1 to 2 Watts[2].To generate
more power ,these single solar cells are connected in
series and parallel combinations. The solar cell is
formed with a p-n junction semi conductor diode
[3].The I-V and P-V curves of a solar energy system
plays a major role in studying the characteristics. The
I-V and P-V characteristics are affected by the two
environmental conditions, those are temperature and
irradiance.
To study the real system behavior we need an
authenticated simulated model. Many photovoltaic
MATLAB models are available in the literature. From
past few years many researchers are working to
develop a sophisticated model to reduce the
computational time and to get accurate information
with less number of parameters. In this paper also a
detailed mathematical simulink based single diode
model was developed.
With that MATLAB model,
KD325GX-LFB, KD330GX-LFB PV modules [13]
characteristics are studied and compared with the
manufacturer’s data.
Solar PV module and solar PV array: Solar cell is the
basic building block of solar array. The number of
Fig.1 Solar Photo Voltaic system
Literature: From past few years, numerical modeling
using MATLAB becomes a valuable tool to
understand the I-V and P-V characteristics of a
system. Many researchers worked on the MATLAB
modeling to optimize the generalized model, those
are:
1. In 2010, Tsai.et.al. Prepared generalized model to
study the effect of solar irradiance and temperature [5]
2. In 2011, Richhariya and Pachari made a
generalized model as temperature and irradiance as a
input parameters and they verified with a commercial
module [6].
Proceedings of 30th IRF International Conference, 21st August, 2016, Bengaluru, India, ISBN: 978-93-86083-84-5
28
A Detailed MATLAB Modeling of Photovoltaic Module
3. In 2012, Babu frame a mathematical model and he
did simulation of PV cell to understand the I-V and
P-V nature [7].
4. In 2013, Jay patel and Gaurang .k.Sharma form a
MATLAB solar pv module to analyze the I-V and P-V
characteristics under different atmospheric conditions
(By varying temperature and irradiance) [8]
5. In 2014, P. Sudeepika, G. Md. Gayaz Khan
developed a mathematical model using MATLAB/
Simulink to study the I-V and P-V characteristics of a
PV module. They analyzed the46W PV module and
the results are compared with a data sheet. [9]
6. In 2015, Jangwoo P ark.et.al. Developed a
mathematical model using MATLAB/ simulink. The
model in this paper does not uses the iterative process
and the results are compared with the manufacturer’s
data sheet. (10)
The total current:
Rp =
Where:
Ipv=photo current
Id=Diode current
Io=Reverse saturation current
Ns=Number 0f cells in series
Ki=Current temperature coefficient
Kv=voltage temperature coefficient
Rs=series resistance
Rp=parallel resistance
Vt=Thermal voltage
Vmp=Voltage at maximum power
Imp=current at maximum power
Isc=Short circuit current
Isc,n=Nominal short circuit current
In this paper KD325GX-LFB and KD330GX-LFB are
analyzed by using single diode MATLAB/simulink
environment. The required Rs and Rp parameters are
identified by the Newton-Rapshon iterative process.
MATLAB Modeling: Accurate and simplest way to
extract the solar P-V module is Single diode
MATLAB model. [11] This model is developed using
the basic equations of semi conductor. The equivalent
circuit of single diode contains one current source
connected parallel to the diode and two resistances one
is parallel resistance (Rp) and another one is series
resistance (Rs) connected in the circuit to represent the
recombination of charge carriers. Recombination at
the depletion region in single diode is negligible, but
in practical devices this type of recombination
produces major loss. Most of the researchers are using
the single diode model due to its simplicity and
computational time and less number of parameters are
used. Single diode model is not accurate at higher
temperatures
Determination of Rs and RP:
Identifying the Rs and Rp values to attain the
maximum power is a crucial task. For this purpose we
are using Newton_rapshon iterative method with a
tolerance of 0.001.
Fig2.Equivalent circuit of Single Diode
Mathematical equations:
From the Kirchhoff’s law:
.
(12)
Simulink Single Diode Model for KD330GX-LFB
Proceedings of 30th IRF International Conference, 21st August, 2016, Bengaluru, India, ISBN: 978-93-86083-84-5
29
A Detailed MATLAB Modeling of Photovoltaic Module
The solutions from newton_Rapshon method
Rs=0.2500 and Rp=493.206 are used to simulate the
above simulink model and the voltage temperature
coefficient is taken as 0.0025(From manufacturers
data sheet).
PV and IV characteristics at 800 W/m2 Irradiance and
temperature of 200C :
P-V Graph
PV and IV characteristics at 1000 W/m2 Irradiance
and temperature of 250C :
P-V Graph
V-I Graph
V-I Graph
TABLE-2
TABLE -1
The same solar simulink PV module is verified at
normal operating cell temperature conditions
(G=800wt/m2 and T=200C).In this case ,the iterative
process solutions for Rs and Rp are 0.48 ohm and
376.493 ohm .
Proceedings of 30th IRF International Conference, 21st August, 2016, Bengaluru, India, ISBN: 978-93-86083-84-5
30
A Detailed MATLAB Modeling of Photovoltaic Module
Simulink Single Diode Model for KD325GX-LFB
The solutions from Newton_Rapshon method
Rs=0.2500ohm and Rp=555.550 ohm are used to
simulate the above simulink model and the voltage
temperature coefficient is taken as 0.0025(From
manufacturers data sheet).
PV and IV characteristics at 800 W/m2 Irradiance and
temperature of 200C :
P-V Graph:
PV and IV characteristics at 1000 W/m2 Irradiance
and temperature of 250C :
P-V Graph
I-V Graph:
I-V Graph
TABLE -4
TABLE -3
The solutions from newton_Rapshon method
Rs=0.34ohm and Rp=468.796 ohm are used to
simulate the above simulink model and the voltage
temperature coefficient is taken as 0.0025(From
manufacturers data sheet
Proceedings of 30th IRF International Conference, 21st August, 2016, Bengaluru, India, ISBN: 978-93-86083-84-5
31
A Detailed MATLAB Modeling of Photovoltaic Module
[5]
CONCLUSION
From Table-1,2at 1000W/m2,800W/m2 irradiance,
and at temperatures 250C, 200C all the simulated
results(Voc,Isc,Vmp,Imp,Pmax) perfectly coincides
with the
KD330GXLFB
solar PV module
experimental results .In the same way from table3,4
(1000W/m2,800W/m2 irradiance, and at temperature
250C, 200C ) the simulated results are approximated
to the experimental parameters of KD325GX-LFB
electrical parameters . In this paper to validate the
simulated results, a single diode model is used. We
can conclude that single diode simulink model
perfectly describes the I-V and P-V characteristics of a
solar module system. The Newton-Rapshon method is
a appropriate method to extract the parallel and series
resistances used for simulation.
[6]
[7]
[8]
[9]
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[4]
Foster, R., M. Ghassemi, and A. Cota, Solar energy :
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Tsai, H.L., C.S. Tu, and Y.J. Su. Development of generalized
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MODELING AND SIMULATION OF SOLAR
PHOTOVOLTAIC MODULE USING MATLAB /
SIMULINK Jay Patel1, Gaurag Sharma2 IJRET:
International Journal of Research in engineering and
Technology ISSN: 2319-1163 .
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MATLAB/Simulink Environment International Journal of
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A detailed modeling of photovoltaic module using MATLAB
Habbati Bellia a,*, Ramdani Youcef b, Moulay Fatima
National Research Institute of Astronomy and Geophysics
NRIAG Journal of Astronomy and Geophysics
KD 300-80 F Series KD325GX-LFB KD330GX-LFB
KYOCERA

Proceedings of 30th IRF International Conference, 21st August, 2016, Bengaluru, India, ISBN: 978-93-86083-84-5
32