BOAT PROPULSION SYSTEM

摘要

The invention relates to a boat propulsion system comprising at least one propeller (8), at least one electric motor (7) by means of which the at least one propeller can be driven, and one converter-fed power supply unit. The at least one electric motor (7) can be supplied with electric power by means of said power supply unit which comprises at least one prime mover and at least one generator powered by said prime mover. The at least one electric motor and the at least one generator of the power supply unit are embodied as three-phase synchronous machines. In order to reduce the volume and weight of such a boat propulsion system while increasing its effectiveness, the at least one electric motor (7) that is configured as a three-phase synchronous machine and the at least one generator that is configured as a three-phase synchronous machine of the power supply unit have rotating excitation coil (10) made of high-temperature super conductor wire and each rotating excitation coil (10) made of high-temperature super conductor wire is arranged in a vacuum-tight, insulated cryostat (14) by means of which the rotating excitation coil (10) made of high-temperature super conductor wire can be chilled to a temperature of 15 to 77 K.