Conducted EMI Reduction in Transformerless PV Grid-Connected Inverter Based on PCB Improvement

Abstract

Transformerless grid-tied inverters are nowadays widely used in renewable energy conversion. In this framework, this paper aims to reduce electromagnetic interferences (EMI) emitted by the oH5 inverter as one of the new Transformerless photovoltaic (PV) topologies. Thereafter, the proposed method consists to discuss the layout techniques and circuit design to reduce the parasitic inductances and to deal with the EMI issues. Furthermore, simulation and experimental results are carried out to emphasize the effectiveness of the proposal.