Secure Solar Power System
by Vladimir Kozitsky
Abstract: A self-sustaining power system was designed to power a remote
base-station of
motion activated video equipment. The system provides 50 watts of power for
four hours
daily and energy is replenished using a photovoltaic panel. Relevant system
operating
parameters along with security information are transmitted wirelessly to a battery
powered
handheld receiver. An Atmel Mega32 MCU monitors relevant parameters and controls
the
transfer of power from the PV panel to the main battery using a maximum power
point
tracking algorithm. It also generates control signals to protect the main battery
from overcurrent,
over-voltage, and thermal runaway.
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