the batteries from the PV modules when they are fully charged, and may disconnect the
load to prevent the batteries from being discharged below a certain limit. The batteries
must have enough capacity to store the energy produced during the day to be used at night
and during periods of poor weather. Figure 17.1 shows a schematic representation of a
simple DC PV system without a battery. In Figure 17.2 a complex PV system with both
DC and AC loads is shown.
Figure 17.1: Schematic of a simple DC PV system to power a water pump.