Decoding the optimal charge depletion behavior in energy domain for predictive energy management of series plug-in hybrid electric vehicle

Wei Zhou, Xuan Cai, Yaoqi Chen, Junqiu Li and Xiaoyan Peng

Applied Energy, 2022, vol. 316, issue C, No S0306261922004858

Abstract: A critical issue for designing predictive energy management (PEM) strategy of Plug-in Hybrid Electric Vehicles is the planning of optimal global charge trajectory. Existing planning methods have flaws in terms of optimality or computational efficiency due to their lack of in-depth consideration about optimal charge depletion behaviors. To address this issue, rigorous theoretical analysis on the aggregated local and global optimal charge depletion behaviors in energy domain is conducted by combining Pontryagin’s Minimum Principle-based analytical derivations and some qualitative reasoning. Fundamental understanding on how the optimal charge depletion rates behave in different driving conditions and why they exhibit such behaviors is provided. The theoretical analysis is further validated through model-in-the-loop tests using an experimentally validated high-fidelity vehicle simulator. The insights gained from the analysis of this paper establish a fundamental knowledge foundation and may pave a new path for more scientific PEM design in the future.

Keywords: Predictive energy management; SoC planning; Charge depletion behavior; Plug-in hybrid electric vehicle; Pontryagin’s minimum principle (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (4)

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DOI: 10.1016/j.apenergy.2022.119098

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