The inverter filters allow for both single- and multi-stage performance options, to mitigate the effects of electromagnetic interference (EMI). Their high voltage means they have lower current, thereby minimising losses due to heat dissipation.
The dc filter is installed between the solar photovoltaic panel and the inverter, thus helping to control conducted emissions on the panel side of the system. It also protects the solar panel from HF stray and leakage currents which can cause premature ageing of the photovoltaic modules.