
537Dynamic Simulation and Fuel Cell Control System
The operating cell temperature as a function of solar ux is given as
TTCG C
G
C
C
=+
−
aa
re
,ref
a,ref
and
22
. (12.33)
If
—reference cell temperature—is not known, it is reasonable to approx-
imate C
2
= 0.03°C·m
2
/W. The operating cell open circuit voltage depends
exclusively on the operating cell temperature
VV CT
CC C
OC OC,
=+ −
03 0
, (12.34)
where C
3
= –2.3 mV/C. The operating short circuit current
ICGC
I
G
C
C
SC a
sc
a
and
0
0
*
,
,
. (12.35)
In Figure 12.10, the Simulink model of the photovoltaic array is shown.
The simulated solar ux for 24 h time is shown in Figure 12.11a and the
correspondi