DEVELOPMENT OF SOLAR POWERED LAWN MOWER USING LOCALLY SOURCED MATERIAL

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Abstract
In recent times, the entire world has been in consistent search of cleaner and safer ways of
generating and producing energy. Due to continuous industrialization in different parts of
the world, there has been a huge deterioration in the natural state of the environment. This
is reflective in different areas and the most prominent has to be Climate change. This paper
therefore focuses on the exploitation of the abundant solar energy to gotten from the sun to
drive a lawn mower. The designed solar powered lawn mower comprises of electric motor,
a charge controller, battery (12V, 40ah), Solar Panel (100W), rotational blade and a control
switch. The entire operation frame work is achieved using the electric motor which is able
to provide the necessary torque needed for the rotation of the blade which is mounted to
the shaft of the motor. The solar powered lawn mower is operated by a switch on the board
which closes the circuit and allows current flow to the motor and ultimately, causing the
actuation of the blade. The battery took about 5hours to charge and 50 minutes of
operation time before completely discharging. However, under a very sunny condition
battery charges and operates simultaneously, taking a longer time to discharge. Finally, the
performance evaluation of the battery was carried out with the machine and it was found
to have a theoretical efficiency of 85%
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