Energy management strategies for fuel-cell hybrid ships based on real-time wavelet transform

ZHANG Zehui1,2,3 CHEN Hui1,2 GAO Haibo1,2 GUAN Cong1,2

(1.School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063)
(2.Key Laboratory of High Performance Ship Technology of Ministry of Education, Wuhan University of Technology, Wuhan 430063)
(3.College of Software, Nankai University, Tianjin 300350)

【Abstract】[Objectives] Aiming at the influence of load fluctuation on the fuel-cell life and power quality of a fuel-cell hybrid ship, this paper proposes an energy management strategy based on real-time wavelet transform. [Methods] By the frequency division processing of a power-demand signal, each power source undertakes the corresponding frequency part of the power demand according to its own electrical characteristics. Taking a fuel-cell hybrid ferry as the target ship, this paper sets up a hybrid power system model in Simulink to verify the proposed algorithm. [Results] The experimental results show that this method can be applied to fuel cells. [Conclusions] The proposed algorithm can prolong fuel cell/battery life and improve the power quality of a hybrid ship.

【Keywords】 hybrid ship; fuel cell; energy management strategy; wavelet transform; hybrid energy storage system;


【Funds】 National Natural Science Foundation of China (51579200, 51909200) Joint Fund of the National Natural Science Foundation of China and the People’s Government of Zhejiang Province for Integration of Industrialization and Informatization (U1709215) Natural Science Foundation of Hubei Province (2018CFB364) Open Fund of the Key Laboratory of Ministry of Transportation for Ship Power Engineering Technology (KLMPET2018-03) Fundamental Research Funds for the Central Universities of the Ministry of Education of China (2019Ⅲ046GX, 2019-YB-023) Graduate Research and Innovation Fund of Tianjin City (2019YJSB067)

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(Translated by HAN R)


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This Article



Vol 15, No. 02, Pages 127-136

April 2020


Article Outline


  • 0 Introduction
  • 1 Fuel-cell hybrid ship
  • 2 Modeling of hybrid power system
  • 3 Energy management strategy based on real-time wavelet transform
  • 4 Simulation experiments
  • 5 Conclusion
  • References