DC POWER SYSTEM FOR MARINE APPLICATIONS

A power system (100) for a marine ship includes a plurality of protection zones (102, 104), wherein at least two protection zones are coupled to each other via at least one bus-tie converter (106, 188). Each of the protection zones includes a plurality of direct current (DC) buses (120, 126, 150, 156); wherein DC buses which do not have same DC voltage are coupled to each other via at least one DC to DC converter (130, 136, 138, 160, 166, 168). Furthermore, at least one energy source (108, 110, 112, 114, 116, 118) is coupled to at least one DC bus via a power electronic converter (122, 124, 128, 152, 154, 158).