Design of Solar Power Optimizer And Eliminating Leakage Current In Multi-Level Inverter For PV Systems

Abstract- This paper proposes a high step-up Solar Power Optimizer (SPO) harvests maximum energy from a photovoltaic (PV) panel with high efficiency. DC-DC converter structure is used to get high step-up voltage gain. It is the structure designed to coupled inductor and switched capacitor. The inductance energy can be recycled, and it is reducing the voltage stress and power loss. Particle Swarm Optimization(PSO) method based Maximum Power Point Tracking (MPPT) algorithm is used to improve the efficiency of the tracking system. Three phase transformer-less neutral point clamped inverters are used to eliminate the leakage current in photovoltaic systems using the multi-level inverters. The three phase neutral point diode clamped inverter can be designed to provide functions of low pass filters. Diode clamped multi-level inverters are used to reduce the harmonic, and also to eliminate the leakage current in PV panels. Keywords- solar power optimizer (SPO), High step-up voltage gain, maximum power point tracking (MPPT) I