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Energies 2015, 8(9), 9946-9968; doi:10.3390/en8099946

Map-Based Power-Split Strategy Design with Predictive Performance Optimization for Parallel Hybrid Electric Vehicles

1
Department of Engineering and Applied Science, Sophia University, Tokyo 102-8554, Japan
2
Department of Electronic Engineering, Harbin Normal University, Harbin 150025, China
3
College of Electromechanical & Information Engineering, Dalian Nationalities University, Dalian 116600, China
*
Author to whom correspondence should be addressed.
Academic Editor: Enrico Sciubba
Received: 21 July 2015 / Revised: 14 August 2015 / Accepted: 31 August 2015 / Published: 14 September 2015
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Abstract

In this paper, a map-based optimal energy management strategy is proposed to improve the consumption economy of a plug-in parallel hybrid electric vehicle. In the design of the maps, which provide both the torque split between engine and motor and the gear shift, not only the current vehicle speed and power demand, but also the optimality based on the predicted trajectory of vehicle dynamics are considered. To seek the optimality, the equivalent consumption, which trades off the fuel and electricity usages, is chosen as the cost function. Moreover, in order to decrease the model errors in the process of optimization conducted in the discrete time domain, the variational integrator is employed to calculate the evolution of the vehicle dynamics. To evaluate the proposed energy management strategy, the simulation results performed on a professional GT-Suit simulator are demonstrated and the comparison to a real-time optimization method is also given to show the advantage of the proposed off-line optimization approach. View Full-Text
Keywords: hybrid electric vehicle; energy management; power split; variational integrator hybrid electric vehicle; energy management; power split; variational integrator
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fan, J.; Zhang, J.; Shen, T. Map-Based Power-Split Strategy Design with Predictive Performance Optimization for Parallel Hybrid Electric Vehicles. Energies 2015, 8, 9946-9968.

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