Radiation Noise Reduction Using Noise Suppression Wires Installed on the Back of a 250-W-Class Photovoltaic Module

Abstract

In recent years, the global movement toward decarbonization has accelerated, and renewable energy has attracted increasing attention. Among the various systems adopted for renewable power generation, photovoltaic (PV) power generation systems are becoming widespread as they have no moving or rotating parts and are easy to install. However, PV power generation modules generally emit noise during power generation and suffer from radio wave interference with the amplitude modulated radio band (531kHz to 1602kHz). In our previous study we confirmed radiation noise suppression with the installation of a noise suppression wire with a closed loop of copper wire in a 15-W-class PV module. In this study, we aim to clarify the noise suppression effect produced by a noise suppression wire installed on a 250-W-class PV module with a larger power generation capability than that in our previous study and a different internal structure of the PV module. Our results suggest that the proposed noise suppression method is effective for 250-W-class PV modules as well.