Nonlinear control of fuel cell hybrid power sources: Part I – Voltage control
- 31 July 2011
- journal article
- Published by Elsevier BV in Applied Energy
- Vol. 88 (7), 2559-2573
- https://doi.org/10.1016/j.apenergy.2011.01.030
Abstract
In this paper is proposed a nonlinear control for fuel cell/battery/ultracapacitor hybrid power sources (HPS) that improves the performance and durability of fuel cell. The nonlinear voltage control is analyzed and designed using a systematic approach. The design goal is to stabilize the HPS output voltage at a low voltage ripple that is also spread in a large frequencies band. All the results have been validated in several simulations. The simulation results successfully show that nonlinear voltage control performs good performances in the frequency-domain (a high spreading level of power spectrum) and in the time domain (a low level of output voltage ripple factor), too.Keywords
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