Power Flow Management of Solar PV fed Switched Boost Inverter

Photovoltaic (PV) power generation is vastly dependent on solar irradiance and temperature conditions. In this paper, the temperature is chosen at standard test condition (STC) i.e.,
$\boldsymbol{T}=\mathbf{25}^{\circ}\mathbf{C}$
, whereas variable irradiance is considered for power flow management. The maximum power point technique (MPPT) algorithm is implemented to concur optimal power from solar photovoltaic array, which is fed via the dc-dc boost converter to a variable dc loading system. A single stage switched boost inverter (SBI) is used for high gain dc-ac power conversion. The SBI is used to enable the ac loads for the operation at high voltage gain with 72 V dc bus. A battery energy storage system (BESS) is integrated and the performance of battery is measured in terms of state of charge (SOC) under different irradiance conditions. The bidirectional converter serves to regulate dc bus voltage whilst maintaining the power balance during deficit and surplus PV power generation conditions. Simulation results are provided to verify proposed microgrid network and power flow management. The results are in good agreement with theoretical analysis.