Journal
APPLIED ENERGY
Volume 88, Issue 7, Pages 2574-2591Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2011.01.044
Keywords
Nonlinear current-mode control; Fuel cell; Hybrid power source; Current ripple factor; Anti-ripple current
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In this paper is proposed a nonlinear current-mode control for the fuel cell/battery/ultracapacitor hybrid power sources (HPS) that improves the ripple factor of the fuel cell current. The nonlinear current control is analyzed and designed using a systematic approach. The design goal is to generate an anti-ripple via buck current controlled source in order to mitigate the inverter current ripple. All the results have been validated in several simulations. The simulation results successfully show that nonlinear current-mode control determines in the low frequency-domain better performances than other current-mode control techniques, such as the hysteretic current-mode controller or the peak current-mode controller. The current ripple factor is one of the used performance indicators. (C) 2011 Elsevier Ltd. All rights reserved.
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