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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