论文信息 - Nonlinear Modeling and Observer for Supercapacitors in Electric Vehicle Applications

Nonlinear Modeling and Observer for Supercapacitors in Electric Vehicle Applications

Abstract In Hybrid Electric Vehicle (HEV) the estimation of the state of charge (SOC) of storage systems is one of crucial issues. Indeed, the SOC depends on the internal voltages which are not accessible for measurement. In this paper a nonlinear observer allowing the estimation of the supercapacitor internal voltages is proposed. Using theoretical analysis and simulation it is proven that the proposed non-linear observer gives an accurate estimation of the SOC.

[1] B. Conway,et al. The role and utilization of pseudocapacitance for energy storage by supercapacitors , 1997 .

[2] Ying Zhang,et al. Modeling and characterization of supercapacitors for wireless sensor network applications , 2011 .

[3] R. Bonert,et al. Characterization of double-layer capacitors (DLCs) for power electronics applications , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).