Abstract

At least two different actuators work in cooperation in regenerative braking for electric and hybrid vehicles. Torque blending is an important area, which is responsible for better manoeuvrability, reduced braking distance, improved riding comfort, etc. In this paper, a control method for electric vehicle blended antilock braking system based on fuzzy logic is promoted. The principle prioritizes usage of electric motor actuators to maximize recuperation energy during deceleration process. Moreover, for supreme efficiency it considers the battery’s state of charge for switching between electric motor and conventional electrohydraulic brakes. To demonstrate the functionality of the controller under changing dynamic conditions, a hardware-in-the-loop simulation with real electrohydraulic brakes test bed is utilized. In particular, the experiment is designed to exceed the state-of-charge threshold during braking operation, what leads to immediate switch between regenerative and friction brake modes. Document type: Part of book or chapter of book

Abstract

En aquest projecte s’analitza el comportament estàtic d’un sistema de tracció elèctrica complert per a un cotxe de Formula Student. Mitjançant la eina Simulink del programa Matlab, es realitzen una sèrie de simulacions en les quals s’analitza el comportament de dos motors síncrons d’imants permanents, els dos respectius inversors i la bateria que utilitzen com a alimentació. També s’estudia el sistema de control dels inversors, el Field-oriented Control, integrat en el propi inversor. Es farà una petita introducció al vehicle elèctric i a les seves principals caractrístiques, però posant molt ènfasis a l’explicació dels components que formen part del model estudiat en aquest treball.