Energy management strategies for fuel-cell hybrid ships based on real-time wavelet transform
(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;
(Translated by HAN R)
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