Journal
ENERGY
Volume 175, Issue -, Pages 1055-1066Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2019.03.155
Keywords
Hybrid power source system; Energy management system; Power distribution strategy; Power capability prediction
Categories
Funding
- National Natural Science Fund of China [61803359]
- CPSF-CAS Joint Foundation [2017LH007]
- China Postdoctoral Science Foundation [2017M622019]
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The proton exchange membrane fuel cell has become a good candidate for the power source of future green transportations due to its excellent performance of high efficiency and cleanness. To overcome the slow dynamic characteristic, the fuel cells are always grouped with other energy storage devices such as lithium-ion batteries and supercapacitors. The development of energy management system and design of the power distribution strategy are critical issues for the hybrid power source system. In previous work, few studies have comprehensively considered the criteria of power capabilities of the batteries and supercapacitors which are intimately correlated with the power requirements of accelerating, gradient climbing and regenerative braking. The development of power distribution strategy considering the constraints of the power capability is urgent and critical to the safety and longevity of the hybrid energy storage system. In this paper, a distributed energy management system is developed for the hybrid power source system based on a rule-based power distribution strategy. The presented power distribution strategy has comprehensively considered the criterias of the demand power, the remaining capacity and power capability of the hybrid power source system. Moreover, the Bayes Monte Carlo approach is employed for co-estimation of the remaining capacity and power capability of the batteries and supercapacitors. Compared with the existing rule-based strategy without considering the restrictions of the power capability, the presented strategy has better rationality in terms of fuel economy and dynamic property. The presented energy management strategy can extend the lifespan and improve the economy of the hybrid energy storage system by employing the charge and discharge limits of power capability and residual capacity. (C) 2019 Elsevier Ltd. All rights reserved.
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