Characterization of the Potential Effects of EMC Filters for Power Converters on Narrowband Power Line Communications

Electromagnetic Compatibility (EMC) filters are one of the main solutions for dealing with disturbances generated by power inverters. However, they show series/parallel resonances that introduce variations in impedance seen from grid. Consequently, some cases, these have low impedances at resonance frequencies, which can affect Narrowband Power Line Communications (NB-PLC) due to notching effects. For reason, potential effects four EMC on NB-PLC been studied. Laboratory trials a controlled environment carried out, attenuation and Signal-to-Noise Ratio (SNR) thresholds define communication’s quality The results presented this paper that, although channel frequency response not selective enough degrade communication thresholds, measured when filter is connected near receiver might be sufficiently high critical communications situations. Therefore, negative impact had previously considered.