PV System Operation in Islanded Mode Based on Interleaved Boost Converter

The rise in consumption of power by DC device in our house results in more AC to DC conversion loss. The solar power is a DC source which can be directly feed to these devices without conversion loss. This paper deals with solar power source integrated with battery energy storage system for DC load. The battery will supply power to the load under low irradiance condition to maintain constant voltage at the output. The solar PV output is given to the load by using interleaved Boost converter at 180-degree phase shift so as to reduce the input current ripple as well as increase the current rating for high power applications. The duty cycle of the converter is controlled by P&O MPPT algorithm. For charging and discharging of battery a bidirectional converter is used for a bidirectional power flow. The recommended model is simulated in MATLAB(Simulink) for full day data of variable irradiance condition.