Voltage stability is one of the issues that need to be tackled before successfully exploiting innovative Medium Voltage DC distribution systems. Focusing on a cascade-connected MVDC power system (i.e. a feeder DC-DC converter supplying a load controlled DC-DC converter), the paper presents a filter design optimization process. The proposed procedure allows minimizing the DC filtering stage capacitor size, assuring at the same time the compliancy with voltage ripple requirements and the system voltage stability for a given load-side control bandwidth.
