System and method for automated management of electric power supply for aeronautical applications

An electric-power-supply system (1) for supply of a primary electrical load (5) and of a secondary electrical load (3), comprising: a power-supply line (10), configured to carry a main power-supply signal (W TOT ), the primary electrical load and the secondary electrical load being connected to the power-supply line; a controlled switch (2, 12) connected between the power-supply line and the secondary electrical load, having a control terminal (12c) receiving a control square-wave signal (V CTR ) configured to open and close the controlled switch and having a duty cycle; a current sensor (8), connected to the power-supply line, generating an intermediate current signal (I G ) correlated to the main power-supply signal; a microcontroller (50), which receives the intermediate current signal and is configured for: a) generating a mean value of the intermediate current signal (I G ); b) detecting whether the mean value of the intermediate current signal is higher or lower than a threshold; c) if it is higher, reducing the duty cycle of the control signal; if it is lower, increasing the duty cycle of the control signal, so as to decrease or, respectively, increase the value of the electric power absorbed by the secondary electrical load (3).