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Modeling and optimal energy management of a power split hybrid electric vehicle

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Abstract

With the combination of engine and two electric machines, the power split device allows higher efficiency of the engine. The operation modes of a power split HEV are analyzed, and the system dynamic model is established for HEV forward simulation and controller design. Considering the fact that the operation modes of the HEV are event-driven and the system dynamics is continuous time-driven for each mode, the structure of the controller is built and described with the hybrid automaton control theory. In this control structure, the mode selection process is depicted by the finite state machine (FSM). The multi-mode switch controller is designed to realize power distribution. Furthermore, the vehicle mode operations are optimized, and the nonlinear model predictive control (NMPC) strategy is applied by implementing dynamic programming (DP) in the finite prediction horizon. Comparative simulation results demonstrate that the hybrid control structure is effective and feasible for HEV energy management design. The NMPC optimal strategy is superior in improving fuel economy.

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Authors and Affiliations

  1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, China

    DeHua Shi, ShaoHua Wang, Long Chen & RuoChen Wang

  2. Clemson University International Center for Automotive Research, Greenville, SC, 29607, USA

    DeHua Shi & Pierluigi Pisu

  3. China Automotive Technology and Research Center, Tianjin, 300300, China

    RenGuang Wang

Authors
  1. DeHua Shi
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  2. ShaoHua Wang
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  3. Pierluigi Pisu
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  4. Long Chen
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  5. RuoChen Wang
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  6. RenGuang Wang
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Correspondence to Long Chen or RuoChen Wang.

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Shi, D., Wang, S., Pisu, P. et al. Modeling and optimal energy management of a power split hybrid electric vehicle. Sci. China Technol. Sci. 60, 713–725 (2017). https://doi.org/10.1007/s11431-016-0452-8

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  • DOI: https://doi.org/10.1007/s11431-016-0452-8

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