140
I I
I
q V R I
V R I
R
=
−
+
(
) −





 −
+








ph
s
s
sh
AKT
0
1
exp
(7.24)
I ph represents the electricity current (A), I D represents the functional current (A),
I 0 represents the inverse current (A), A represents the functional constant, q represents the charge of the electron (1.6 × 10
−19
 C), K is the Boltzmann’s constant, T
represents the cell temperature (°C), R s represents the series resistance (ohm), R sh
represents the shunt resistance (Ohm), I represents the cell current (A), and V represents the circuit cell voltage (V). Thus, the output electricity current into the circuit
panel is thus described as follows:
I I
I
V IR
R
=
−
−
+






pv
D
S
sh
1
(7.25)
where
Fig. 7.7 (a) MATLAB simulation calculating electricity energy generation from bioenergy showing various frequencies and distances of the electric charges into the single-diode circuit cell, (b)
shows the conversion mechanism of electricity energy DC into AC for the use as the prime source
of power supply for a building
7 Advanced Green Building Technology