Modeling and Design of Net ZEBs as Integrated Energy Systems - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 57

These parameters depend on solar radiation and PV cell temperature. At
a specific temperature and solar radiation level, the current-voltage ( I - V )
characteristics of a PV module, approximated by the one-diode model
( Figure 2.14 ) , is given by
(2.25)
Fig. 2.14 Equivalent circuit for the one-diode model
The power is calculated as the product of the current, I and voltage, V :
(2.26)
To obtain the PV module maximum power point, the following equations
must be solved:
(2.27)
(2.28)
Equation (2.27) is obtained by differentiating Eq. (2.26) with respect to
V and setting the result equal to zero, and Eq. (2.28) is obtained by
substituting I and V by their respective value at maximum point ( I mp and
V mp ) in Eq. (2.25) . The detailed equations necessary to obtain the five