Grid Connected Single Phase Rooftop Pv System With Limited Reactive Power Supply

Tota Sankara Rao, N Sirishna

Abstract


In this paper SRF theory based PV system with MPPT DC-DC controller for grid connected single phase rooftop system have been presented. Photovoltaic (PV) systems are the alternative source of generation because these can be placed near to the load centers when compared with other renewable source of generation. The rooftop PV system in general is grid connected and supports the off grid load with battery backup. It is therefore rooftop PV is the centre of attraction for majority PV systems. The proposed system must ensure total evacuation of generated power and with high efficiency of conversion, and utilizes the resource adequately to maximize the utilization of energy. The voltage source converter (VSC)  will operate based on the PWM controller to realize maximum generated power evacuation by maintaining the DC link voltage as a constant value without any battery storage system, low THD sinusoidal line synchronized current output, and also limits the reactive power and controls the power actor based on the unutilized capacity of the inverter. This paper proposes SRF theory based PV system with MPPT DC-DC PWM controller. Incremental conductance (IC) method is used to get maximum power from the PV system. The simulation results shows the efficient working of rooftop PV with proposed control algorithms in grid connected mode using MATLAB/ SIMULINK software.


Keywords


MPPT, Synchronous reference frame (SRF), Incremental Conductance (IC), Photovoltaic (PV)

References


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