Modeling and Simulation of 10 kw grid Connected pv generation System Using Matlab/Simulink

Figure 1
.
PV cell - Equivalent circuit. 
Figure 2 
V - I characteristic of a solar cell 
I = I
PVcell
− I
0cell
[(exp (
q(V+i𝑅
𝑠
)
nkT
) − 1) − (
𝑉 + 𝐼𝑅
𝑠
𝑅
𝑝
)]
(1) 
Incident photocurrent is calculated by the temperaturesT
1
and 
T
2
. 
I
PVcell
= I
PVcell
+ (T − T
1
) K
0
(2)
I
L
(T) = I
SC
T1
(
G
G
nom
)
(3) 
K
0
= (I
SC
T1
− I
SC
T2
) (T
2
− T
!
⁄
)
(4) 
G
nom
is the reference solar radiation and current solar radiation 
is represented by G. 
During the dark, the cell is inactive and behaves like diode. 
The shunt resistance and internal resistance of the solar cell is 
denoted by R
p 
and R
s
respectively., The maximum power (for 
a given resistive load) is given by- 
P
Max
= I
Max ∗ V
Max
(5) 
Solar cell’s efficiency can be defined by- 
𝜂 =
P
Max
P
Min
=
(V
Max
∗I
Max
)
A∗G
(6) 
Here, A represent area of the cell whereas G is the incident 
solar radiation on cell
To measure the quality of the solar cell, we use Fill 
Factor(FF). The FF should be more than 0.7. It is inversely 
proportional to the cell temperature. 
FF =
(I
SC
∗𝑉
𝑂𝐶
)
(V
Max
∗I
Max
)
(7) 

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International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 24 (2018) pp. 16962-16970 
© Research India Publications. http://www.ripublication.com 
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