A hierarchical energy management strategy for battery-supercapacitor hybrid energy storage system of electric vehicle

To improve the performance of electric vehicle (EV), supercapacitor has been used as an auxiliary energy storage system for battery due to its high power density and fast charging and discharging characteristics. However, the challenge is how to coordinate or optimize these two energy sources in order to take full advantage of their strengths respectively. In this paper, a two-layer energy management strategy is proposed, namely, energy layer and power layer. From the energy layer, an optimal state of charge (SOC) for supercapacitor is determined to meet the energy demand of electric vehicle, while the power split ratio is determined between the battery and the supercapcitor from the power layer. The hybrid energy storage system with both battery and supercapacitor is modeled with Advisor and the simulation results have shown that under various driving cycles the proposed strategy is valid and effective.

[1]  Panpan Yang,et al.  Fuzzy optimal control and simulation of battery-ultracapacitor dual-energy source storage system for pure electric vehicle , 2010, 2010 International Conference on Intelligent Control and Information Processing.

[2]  Varsha A. Shah,et al.  An energy management system for a battery ultracapacitor Hybrid Electric Vehicle , 2009, 2009 International Conference on Industrial and Information Systems (ICIIS).

[3]  J. Schindall,et al.  The Charge of the Ultracapacitors , 2007, IEEE Spectrum.

[4]  P.C.K. Luk,et al.  Applying Management Methodology to Electric Vehicles with Multiple Energy Storage Systems , 2007, 2007 International Conference on Machine Learning and Cybernetics.

[5]  Srdjan M. Lukic,et al.  Energy Storage Systems for Automotive Applications , 2008, IEEE Transactions on Industrial Electronics.

[6]  Chee Wei Tan,et al.  A review of energy sources and energy management system in electric vehicles , 2013 .

[7]  M. Michalczuk,et al.  Fuzzy logic control of a hybrid battery-ultracapacitor energy storage for an urban electric vehicle , 2013, 2013 Eighth International Conference and Exhibition on Ecological Vehicles and Renewable Energies (EVER).

[8]  Andrew Burke,et al.  Ultracapacitor technologies and application in hybrid and electric vehicles , 2009 .

[9]  A. A. Ferreira,et al.  Control Strategy for Battery-Ultracapacitor Hybrid Energy Storage System , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[10]  S. Bacha,et al.  Results concerning ultracapacitor-based energy management strategy within electric vehicles , 2012, 2012 16th International Conference on System Theory, Control and Computing (ICSTCC).