The conducted emission attenuations produced in the ON-GRID photovoltaic systems loaded with residential consumers

It is already well known that the main source of electromagnetic interference produced by photovoltaic systems is generated by DC-DC and DC-AC converters. Although the means for attenuation of these unwanted emissions is well known, most photovoltaic power generation systems on the market still degrade the quality of the produced electrical energy, with reasons ranging from poor quality components of the system to the various range of consumer types. However, there is also a tendency to attribute the electromagnetic interferences generated by electric power generation systems in the residential sector only to the system itself, neglecting the influence of consumers. The research in this paper focused on measuring conduction emissions on the three phases of a residential building powered by a photovoltaic system. Various types of loads specific to the residential environment such as electric radiators, heat pumps, computers etc., were considered. The aim was to determine the frequency spectrum of these emissions and how they are influenced by the type of consumer. Another issue that has been investigated was whether conduction emissions are due to consumers, the inverter, or both.