Title: Rule-based energy management strategies for hybrid vehicles

Authors: Theo Hofman, Maarten Steinbuch, Roell Van Druten, Alex Serrarens

Addresses: Department of Mechanical Engineering, Faculty of Dynamics and Control Technology, Section of Control Systems Technology, P.O. Box 513, Eindhoven, The Netherlands. ' Department of Mechanical Engineering, Faculty of Dynamics and Control Technology, Section of Control Systems Technology, P.O. Box 513, Eindhoven, The Netherlands. ' Drivetrain Innovations B.V., MMP 1.42, Horsten 1, 5612 AX Eindhoven, The Netherlands. ' Drivetrain Innovations B.V., MMP 1.42, Horsten 1, 5612 AX Eindhoven, The Netherlands

Abstract: The highest control layer of a (hybrid) vehicular drive train is termed the Energy Management Strategy (EMS). In this paper an overview of different control methods is given and a new rule-based EMS is introduced, based on the combination of Rule-Based and Equivalent Consumption Minimization Strategies (RB-ECMS). The RB-ECMS uses only one decision variable and requires no tuning of many threshold control values and parameters. This decision variable represents the maximum propulsion power of the secondary power source (i.e. electric machine/battery) during pure electric driving. The RB-ECMS is compared with the strategy based on Dynamic Programming (DP), which is inherently optimal for a given cycle. The RB-ECMS proposed in this paper requires significantly less computation time with a similar result to DP (within 1% accuracy).

Keywords: automotive control; energy management strategy; hybrid electric vehicles; optimisation hybrid power systems; vehicle modelling; vehicle simulation; hybrid vehicles; rule-based systems; fuel consumption.

DOI: 10.1504/IJEHV.2007.014448

International Journal of Electric and Hybrid Vehicles, 2007 Vol.1 No.1, pp.71 - 94

Published online: 08 Jul 2007 *

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