Experimental Study on the Combustion and Energy Flows of Vehicle Engine Under NEDC of Cold Start

Zhao, Zhichao; Meng, Zaiqiang; Li, Lü; Wang, Shuqian; Fu, Jianqin; Liu, Jingping

doi:10.1007/s42154-019-00078-w

Cited by 2 publications

(1 citation statement)

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“…To extensively investigate the impact of uncertainty on electric vehicle (EV) charging efficiency, probabilistic modeling of EV charging patterns in residential delivery networks was performed [12]. However, certain operating modes or control algorithms increase fuel economy by overloading the battery grid, which reduces battery lifespan [13]. Thus, it is necessary to constrain battery degradation cost for EMS of PHEV [14].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Sizing and Power Distribution Strategy for Hybrid Energy Storage System

Wei

et al. 2021

Automot. Innov.

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This paper proposes a hierarchical sizing method and a power distribution strategy of a hybrid energy storage system for plug-in hybrid electric vehicles (PHEVs), aiming to reduce both the energy consumption and battery degradation cost. As the optimal size matching is significant to multi-energy systems like PHEV with both battery and supercapacitor (SC), this hybrid system is adopted herein. First, the hierarchical optimization is conducted, when the optimal power of the internal combustion engine is calculated based on dynamic programming, and a wavelet transformer is introduced to distribute the power between the battery and the SC. Then, the fuel economy and battery degradation are evaluated to return feedback value to each sizing point within the hybrid energy storage system sizing space, obtaining the optimal sizes for the battery and the SC by comparing all the values in the whole sizing space. Finally, an all-hardware test platform is established with a fully active power conversion topology, on which the real-time control capability of the wavelet transformer method and the size matching between the battery and the SC are verified in both short and long time spans.

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Section: Introductionmentioning

confidence: 99%