The technological evolution is generating the development of new elements, which integrated into the vehicles, facilitate and cover the needs of the utilities in terms of management systems, guidance, control of the vehicle, etc. These new technological developments that facilitate and increase the use of vehicles, require electric power, increasing the demand and therefore, the generation and availability of energy in the vehicle. Within the sector of heavy-duty wheeled vehicles (special all-terrain vehicles), the main energy consumptions are: Compressor, fan, starter motor, heating, fuel pumps, energy export, cooling liquid pumps, power steering, ABS brakes, windscreen wipers, C4I systems, sensors, vehicle lights, etc. This means a high energy consumption in the vehicle, reaching double with the peak values of these systems. The evolution and development of these systems reflect the evolution in the electric power needs of vehicles. Within the defence sector, the main utility of this type of vehicles, it is not only the vehicle that is incorporating electronics, but also the soldiers, expand and modify their equipment with a large amount of electronics, so it is essential that the new vehicles are capable of providing troop transport capacity, recharging of electronics and similarity in their management systems. When analysing the vehicles with better performance, it is difficult to find information about the electrical power available, despite the relevance of it, so it can be a data that is not taken into account when selecting it and subsequently, causes problems or requires redesigns or expensive updates, for its correct electrical sizing. The technological trend for the increase of the available electrical energy, involves the incorporation of heavy batteries, which supply high voltage in continuous, using conventional converters. With the aim of solving this growing need for high power energy availability in high-tonnage off-road vehicles, the present project is configured, which involves the development of a high power electric power generation system, capable of converting the vehicle into a large generator set, capable of exporting a large amount of energy in high and low voltage, eliminating the problems of logistics of generator sets to remote sites and that simultaneously, can be used as a complement to the propulsion system, in this case, as a starter engine. The new system will integrate technologically innovative elements, which will allow the development of a solution of high efficiency, reliability and small size, capable of providing large amounts of energy in extreme operating conditions. Among the main innovations of the project, we will develop: Electric machine operating as a starter/generator of 75 kW high torque density and power permanent magnets, without position sensor, with an electrical machine performance greater than 90 %. Power electronics that manage the system efficiently and reliably, using Silicon Carburo MOSFET type semiconductors. For power electronics, the control algorithm will be developed that makes the machine work as a motor and generator, and that dispenses with the rotor angle sensor to solve the reliability problem.