Modelization of a hybrid system with renewable energy for electric propulsion in boats. Application to a robotic floating platform

A model of a hybrid system with renewable energy for electric propulsion
in boats in which energy generated by photovoltaic panels and hydrogenerator is
stored in the main battery which exerts its function as central element of a renewable
cycle is presented. Additionally, hydrogen plays a role being generated by an
electrolyzer for later to be stored in cylinders aboard in order to generate electric
power by a fuel cell. Both, batteries and cylinders can be used to feed the different elements
of the system, more specially the thruster while the excess of power is stored
in another battery which is auxiliary and it is able to feed the first when it is necessary.