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Control of Transformerless Inverter in Standalone Photovoltaic MPPT Systems
This paper presents the simulation performance of control of a standalone photovoltaic (PV) maximum power point tracking (MPPT) system with transformerless inverter. The tested control strategy for PV module is based on Perturb and Observe (P&O) MPPT algorithm and current and voltage are employed to enhance controllability of the control scheme applied into a dc-dc boost type power converter. A single-phase HERIC (Highly Efficient and Reliable Inverter Concept) transformerless inverter connected as an output to the converter is applied and controlled to feed ac loads.