Modified OCC based single-phase grid connected hybrid PV/Battary system

Abstract

Reformation of the electricity sector along with different renewable energy promotion policies has incremented importance of small grid-connected photovoltaic (PV) systems utilizing single-stage single-phase inverters. This paper proposes a single-stage inverter with maximum power point tracking (MPPT) and one cycle control (OCC) for grid connected (PV) system. This control scheme predicated on the output currentadjusting feature of one cycle control. Schemes predicated on one-cycle control (OCC) which do not need the service of a phase locked loop for interfacing the inverter to the grid is increasingly being employed for such applications. However, the OCC-predicated schemes reported earlier required sensing of the grid voltage which scarcely offsets one of the intrinsic strengths of OCC- predicated systems. In an effort to surmount the above circumscription, OCC predicated grid connected single-stage PV system is proposed and does not required sensing the grid voltage. In this paper proposed scheme operated as a ‘power system stabilization’ for achieving constant grid voltage at time of transmutation in solar insolation. It will be analyse with the FFT analysis. The proposed hybrid PV/Battery system is interface with utility grid to mitigate the impact of utility system operation. Viability of the proposed scheme is attest by performing simulation and results validation.