A SUSTAINABLE POWER SOURCE FOR PORTABLE ELECTRONIC DEVICES

The proposed system combines the solar energy and wind energy along with battery storage to provide supply to the low power device. If the energy produced from the renewable sources is surplus, then the excess energy is stored in a battery, and if the energy is not enough, then the battery gives energy to the device. When the energy generated sufficient enough to meet the load demand, the battery is neither recharging nor charging. The power management unit which includes the pulse width modulation (PWM) for each converter is designed in such a way that the optimized use of the sources is ensured and selects the apt source according to the climatic conditions. The whole system is simulated using MATLAB/SIMULINK and the simulation results are presented to show the response of the system to low power devices.