Power management improvement of hybrid energy storage system based on H∞ control

This paper deals with the real-time implementation of a robust control for electric vehicles, supplied by a battery/capacitor super capacitor hybrid energy storage system (HESS) and piloted via a permanent magnet synchronous motor (PMSM). The main goals are to monitor the motor using the back-stepping control and to provide an efficient power management. This has been implemented by means of the DC bus regulation using an H infinity regulator, while a classical regulator is used to ensure a super capacitor (SC) voltage allowing a maximal availability during repetitive peak power, in order to ensure an optimal power flow to the load as well as to keep the SC operation in a safe voltage range. This original algorithm has been validated through experimental results provided by a tailor made test bench including both the HESS and the vehicle emulation controlled via two dSPACE 1104 cards. Furthermore, the back-stepping controller shows good dynamic performances, where the system reaches to track perfectly the speed profile, under tolerable torque and flux ripples. (C) 2019 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.