The following Master's Thesis discusses the analysis of a braking system, designed by the IEHV research group as an alternative and environmentally friendly solution to traditional friction brakes. The idea arose from the need to completely reduce the emissions of the braking system of an electric vehicle: traditional brakes, in fact, produce dust emissions due to the consumption of the pads; regenerative braking (RB) allows a considerable reduction in emissions but not enough to reach zero-pollutants. In the first part of the thesis, a brief analysis is proposed on the efficiency of regenerative braking as a function of the State of Charge (SoC) of the battery and its impact on dust emissions.