knjiga solarna energija dobra

958 ENERGY COLLECTED AND DELIVERED BY PV MODULES
C A2
C A1
1
1
j
Days
Figure 20.22 Time variation of the generated daily energy, relative to load, for two PV generators
for which C A1 2, which is usually
the case. The above- described assumption leads to particularly simple calculations. The
state of charge, SOC, of the accumulator at sunset of day j is given by
{
SOC j = min SOC j−1 + C A · G dj
− 1 }
;1
(20.81)
C S · G d C S
where G dj is the total irradiation for day j, and
LLP =
N∑
E LACK j
1
N · L
(20.82)