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Appl. Sci. 2018, 8(7), 1144; https://doi.org/10.3390/app8071144

Optimization Analysis of the Energy Management Strategy of the New Energy Hybrid 100% Low-Floor Tramcar Using a Genetic Algorithm

1
CRRC Institute, Beijing 100070, China
2
CRRC Tangshan Co., Ltd., Tangshan 064000, China
*
Author to whom correspondence should be addressed.
Received: 23 April 2018 / Revised: 28 June 2018 / Accepted: 10 July 2018 / Published: 13 July 2018
(This article belongs to the Special Issue Hybrid Energy Storage Systems)
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Abstract

Performance and economic efficiency of the fuel cell (FC)/battery/super capacitor (SC) hybrid 100% low-floor tramcar is mainly determined by its energy management strategy. In this paper, a train traction model was built to calculate the power output and energy consumption properties of the hybrid tramcar. With the purpose of reducing hydrogen consumption, the genetic algorithm was adopted to optimize the original energy management strategy. The results before and after the optimization show that the power requirement of the tramcar can be satisfied in both situations with the fuel cell (FC) module non-stopped. The maximum output power of the FC is reduced from 170 kW to 101.21 kW. As for the SC, a two-parallel connection module is used instead of the three-parallel one, and the power range changes from −125~250 kW to −67~153 kW. Under the original energy management strategy, the battery cannot be used efficiently with less exporting and absorbent power. Its utilization ratio is improved greatly after optimization. In sum, the equivalent total hydrogen consumption is reduced from 3.3469 kg to 2.8354 kg, dropping by more than 15%. View Full-Text
Keywords: fuel cell; hybrid; tramcar; energy management strategy; genetic algorithm fuel cell; hybrid; tramcar; energy management strategy; genetic algorithm
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Li, M.; Li, M.; Han, G.; Liu, N.; Zhang, Q.; Wang, Y. Optimization Analysis of the Energy Management Strategy of the New Energy Hybrid 100% Low-Floor Tramcar Using a Genetic Algorithm. Appl. Sci. 2018, 8, 1144.

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