Minimize Leakage Currents in Solar-PV Systems with Passive Filters and fuzzy Based Voltage Source Converter

Due to grounding issues and fault operation of power converters parasitic capacitance are emerged in the closed path of grid connected PV systems. This undesired capacitance develops the leakage current within the PV modules and leads to degrade overall performance of the system. However, the quantity of this leakage current is low if it exists over time span place a significant loss. Particularly, for the commission of large scale PV system these leakage currents create the many power quality issues. To address this problem, design of passive filters is presented in this work. Additionally, for harmonic compensation, voltage source converter (VSC) operated with a fuzzy logic controller (FLC). The fuzzy membership decisions rules well operate the VSC and perform the harmonic compensation. The simulation results are exhibits that the proposed passive filters and fuzzy based VSC can reduce the impact of the leakage current in the PV systems. The proposed approach can be more efficient and improves the overall performance of Solar-PV system.