Title: Online energy management applied to fuel cell hybrid electric vehicles

Authors: Mahnaz Rashedi, Mohsen Mohammadian

Addresses: Electrical Engineering Department, Shahid Bahonar University, 22 Bahman Highway, Kerman, Iran. ' Electrical Engineering Department, Shahid Bahonar University, 22 Bahman Highway, Kerman, Iran

Abstract: Hybrid Electric Vehicles (HEVs) are equipped with multiple power sources for improving the efficiency and performance of their power supply system. Hence, an Energy Management (EM) strategy is needed to optimise the internal power flows and to satisfy the driver|s power demand. This paper deals with power flow management within a hybrid fuel cell-powered vehicle during real-time operation. The aim is real-time control of the power distribution between the fuel cell and battery to optimise the global hydrogen consumption while the vehicle performs an online driving cycle. To do so, two strategies are proposed based on fuzzy controllers. Both controllers determine the optimised operation points for the vehicle energy sources during online driving cycles and guarantee soft dynamic transition in switching between operating modes. The simulation results confirm the feasibility of both proposed strategies and encourage more research towards an actual application.

Keywords: energy management; supervisory control; battery state of charge; online driving cycles; pattern recognition; fuel cells; hybrid electric vehicles; hybrid vehicles; HEVs; power demand; power flow management; power management; hydrogen consumption; fuzzy control; simulation.

DOI: 10.1504/IJEHV.2010.034984

International Journal of Electric and Hybrid Vehicles, 2010 Vol.2 No.4, pp.315 - 328

Available online: 31 Aug 2010

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