A Novel Control Strategy for Parallel Hybrid Electric Vehicles

Abstract

The work in this paper presents a new technique for control strategy of hybrid electric vehicles. The control strategies for hybrid electric vehicle are algorithms that choose the power split between Internal Combustion Engine (ICE) and electric motor. The fuzzy logic controller is realized to satisfy the controller objectives; improvement on the drive ability of vehicle, battery charge balance and reduction of emissions. The decisionmaking of fuzzy logic controller is useful to nonlinear and uncertain system such as hybrid electric vehicle applications, and the fuzzy logic controller has an immune property to various vehicle load and road conditions. In this study, first operational modes of hybrid electric vehicle has been determined, then by using the proper strategy, the engine operation is set on it’s peak efficiency in order to maximize fuel economy and minimize emissions.