Double Scale Robust Control for the Hybrid Energy System of A Battery Electric Vehicle

Lingying Zhao, Dawei Shi, Min Ye

Abstract


Aiming at improving the energy efficiency of the battery electric vehicle, the hybrid energy system of the battery and super-capacitor is proposed. The bidirectional buck/boost DC/DC converter is designed for hybrid energy system. The electrical circuit and running principle are depicted in detail. Then the mathematical model is derived, based on the parameter perturbation. Combining the merits and defects of H2 optimal control and H∞ robust control, robust H2/H∞ controller is put forward to guarantee both the system performance and the robust stability. The experiments are carried out to validate the feasibility and effectiveness of the proposed method. The results show that the proposed scheme was endowed with good control performance. Furthermore, compared with the traditional single scale controller, the double scale control can recover more energy and improves the driving range by 7%.

Keywords


battery electric vehicle, hybrid energy system, double scale control, parameter perturbation


DOI
10.12783/dteees/iceee2018/27788

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