An optimal control strategy for parallel hybrid electric vehicles

Document Type : Article

Authors

School of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-9567, Iran

Abstract

This paper proposes a new power management strategy (PMS) for parallel hybrid electric vehicles equipped with continuously variable transmission (CVT). The proposed PMS is established on the basis of electric assist control strategy (EACS) and equivalent consumption minimization strategy (ECMS). This control approach is based on maintaining the battery energy within a recommended range, considering the CVT efficiency in selecting the engine operating point, and finding the best power split between the engine and electric motor at certain moments of the driving. In order to evaluate the effectiveness of this scheme, it is compared with EACS, a modified version of EACS and ECMS. It is shown that, in all of the studied driving cycles, the proposed PMS is superior to the considered rival strategies in terms of the fuel consumption and also HC and CO emissions.

Keywords

Main Subjects

References

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Scientia Iranica
Volume 26, Issue 6 - Serial Number 6
Transactions on Mechanical Engineering (B)
November and December 2019
Pages 3245-3254

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