Vehicle, in particular a sailboat, with devices for generating electricity from renewable energy sources and a power grid that operates at different voltage levels to regulate the generated electricity

Abstract

Vehicle with: - a DC network (101) comprising: a) a high-voltage busbar (104) operating at a first voltage level; b) a low-voltage busbar (106) operating at a second voltage level below the first voltage level; c) converters (138, 152, 156) configured to transfer current between different voltage levels by means of a conversion; - at least one high-voltage battery (130) configured to store current at the first voltage level and electrically connected to the high-voltage busbar (104) to transfer current to and from the high-voltage busbar (104); - electrical loads (100) comprising: a) high-voltage loads (114) connected to the high-voltage busbar (104) in parallel with the high-voltage battery (130) to be supplied at the first voltage level;b) Low-voltage loads (116) connected to the low-voltage busbar (106) to be supplied at the second voltage level; - an electronic control unit (BCU) configured to control at least one (152) of the converters (138, 152, 156) to regulate the energy / power flows in the DC network (101);characterized in that the DC network (101) also comprises a medium-voltage busbar (105) operating at a third voltage level between the first and second voltage levels, the vehicle also comprising means for generating electricity from renewable energy sources (139) wherein the means for generating energy from renewable energy sources (139) are connected to the medium-voltage busbar (105) so that current is supplied to the third voltage level and wherein the converters (138, 152, 156) comprise: - at least one first bidirectional DC-DC converter (138) arranged to transfer current between the high-voltage busbar (104) and the medium-voltage busbar (105) with a conversion between the first and third voltage levels;- at least one second DC-DC converter (152) arranged to transfer current from a high-voltage busbar (104) or a medium-voltage busbar (105) to the low-voltage busbar (106) with a conversion to the second voltage level from the first voltage level or the third voltage level.