Buck-boost converters design for Ultracapacitors and lithium battery mixing in hybrid vehicle applications

M.B. Camara (1) , H. Gualous (2) , B. Dakyo (1) , C. Nichita (1) , P. Makany (2)

1 GREAH - Groupe de Recherche en Electrotechnique et Automatique du Havre
2 LUSAC - Laboratoire Universitaire des Sciences Appliquées de Cherbourg

This paper presents a careful study related to a more efficient energy management between lithium battery (with rated voltage of 24V) and Ultracapacitors (UC) for Hybrid Electric Vehicle (HEV) applications. This association is due to the present trend in the field, knowing that the major drawback of the HEV is the autonomy problem. Thus, using the Hybrid energy source (such as UC + battery) and with a good energy management improves the HEV performances. In this paper, battery and Ultracapacitors (10 cells of 2.7V in series) are coupled to DC-bus using two buck-boost converters. The main contribution of this paper is focused on DC-bus voltage and currents control strategy based on polynomial (RST) controller. Through some simulations in MATLAB/Simulink software and experimental results, the authors present an improved energy management for HEV.

Mots clés: Lithium battery; ultracapacitors; polynomial control; hybrid electric vehicle

Domaines: Sciences de l'ingénieur [physics]; Energie électrique

M.B. Camara, H. Gualous, B. Dakyo, C. Nichita, P. Makany. Buck-boost converters design for Ultracapacitors and lithium battery mixing in hybrid vehicle applications. 2010 IEEE Vehicle Power and Propulsion Conference (VPPC), Sep 2010, Lille, France. ⟨10.1109/vppc.2010.5729140⟩. ⟨hal-02153699⟩