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1. An actuation and traction system for a pedal-actuated electric vehicle comprising an electric motor, a transmission comprising an epicyclic device, a continuous variable speed drive actuated independently of the pedals, wherein said continuous variable speed drive comprises an actuator that positions the ratio, and two expandable pulleys, an integrated board provided with devices for actuating control software with sensor management, wherein said integrated board is adapted to control said electric motor based on the signals received from sensors, a pinion for transmitting the motion from the pedals or electric motor to the wheel of the electric vehicle, wherein said pinion and said continuous variable speed drive are positioned coaxially on the pedal axis, wherein the motion transmission between the pedals and the wheel of the electric vehicle occurs through a kinematic chain which comprises said epicyclic device and said variable speed drive, and wherein the transmission of the motion between the electric motor and the pinion occurs through a cascade of gears adapted to obtain the desired transformation ratio between the electric motor that rotates at high speed, and the pinion that actuates a drive chain between the pinion and the wheel for transmitting motion to the wheel of the electric vehicle, and wherein said epicyclic device is mounted on a shaft positioned on the pedal axis of the electric vehicle and comprises a satellite carrier formed by a right planetary flange and a left planetary flange, wherein said epicyclic device comprises, between the two flanges of said satellite carrier, a sun gear, a roller bearing, three externally toothed satellite gears, and an internally toothed fixed crown gear that provides an internally toothed profile capable of cooperating with the externally toothed profiles of the satellite gears, wherein said fixed crown gear meshing with said satellite gears allows the transmission ratio to be defined.
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