Design of a Power Bus for a New Autonomous Underwater Vehicle (AUV)

摘要

The Naval Postgraduate School had developed its own AUV called the Phoenix. A successor of the Phoenix is under construction. This new boat, larger, need to have more power than its predecessor to fight the wave current and to have the ability of station keeping in a dynamic environment. In that way, the power capacity will be increased to match and even overtake the range of the first NPS AUV. The Phoenix currently uses a 24 volts batteries pack. The new boat will use a 48 volts batteries pack. Moreover, some components will be replaced or removed for the new configuration (camera, acoustic modem, etc...). All this change requires designing a new power bus to give electric power in all the boat. Described in this project is the adaptation of all the Phoenix's components to this new power bus. This adaptation included the choice of new components and the design of the new power bus that will provide energy in the new boat. This project also provides a simulation of the screw motors on Simulink. This simulation, as the beginning of the electric modelization of the boat, provides a complex model of the screw motors. It is simplified at the end to obtain a faster but sufficiently accurate simulation.