Overall, with an output error of 2.42% it can be concluded that the results from the system were fairly acceptable. By using a Low Pass Filter at the output of the DC-DC Buck Converter any unnecessary frequencies that contributed to any noise and other inefficiencies were diminished. By using the MPPT at the input of the system, faster charge times can be seen as a result of maximizing the output power of the solar panel during peak hours and diminished battery voltage levels. However, for a more ideal power station capable of outputting the desired 40W, a larger solar panel is required as well as faster switching speeds from a the microcontroller.
Though the MPPT was not implemented fully into the system, according to simulations of the code and the circuit it can be seen that the MPPT can be used to increase the charging rate when the battery is at a low charge as well as when more power is required at the load. As for the charging circuit, implementation would not be a problem considering the simplicity of the code and the circuit.
Login