Propulsion system for a water craft, method for operating a drive system and water craft with a drive system

摘要

A drive system (2) for a watercraft, in particular for an underwater vehicle submarine or an unmanned underwater vehicle, comprises a fuel cell system (6), at least one operating gas container (4) for supplying the fuel cell system (6) with an operating gas (B) and an a gas discharge line (16) arranged compressor (14) for compressing a residual gas (R) from the fuel cell system (6). With a view to improving the energy balance of the drive system (2) between the operating gas container (4) and the fuel cell system (6) arranged turbine (10) for relaxing the operating gas (B) before it enters the fuel cell system (6), the compressor (14) is driven by the turbine (10).