Nonlinear observation in fuel cell systems: A comparison between disturbance estimation and High-Order Sliding-Mode techniques

This paper compares two Nonlinear Distributed Parameter Observers (NDPO) for the observation of a Proton Exchange Membrane Fuel Cell (PEMFC). Both NDPOs are based on the discretisation of distributed parameters models and they are used to estimate the state profile of gas concentrations in the anode...

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Bibliographic Details
Published in:International journal of hydrogen energy Vol. 41; no. 43; pp. 19737 - 19748
Main Authors: Luna, Julio, Usai, Elio, Husar, Attila, Serra, Maria
Format: Journal Article Publication
Language:English
Published: Elsevier Ltd 16.11.2016
Subjects:
Automàtica i control
Classificació INSPEC
control theory
Distributed parameter system
Disturbance observer
Informàtica
Modelling
Nonlinear observer
observability
PEMFC
power generation control
Sliding-mode
Sliding-mode control nonlinearities
Àrees temàtiques de la UPC
Nonlinear observer
Disturbance observer
PEMFC
Sliding-mode
Distributed parameter system
ISSN:0360-3199, 1879-3487
Online Access:Get full text
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Summary:This paper compares two Nonlinear Distributed Parameter Observers (NDPO) for the observation of a Proton Exchange Membrane Fuel Cell (PEMFC). Both NDPOs are based on the discretisation of distributed parameters models and they are used to estimate the state profile of gas concentrations in the anode and cathode gas channels of the PEMFC, giving detailed information about the internal conditions of the system. The reaction and water transport flow rates from the membrane to the channels are uncertainties of the observation problem and they are estimated throughout all the length of the PEMFC without the use of additional sensors. The first observation approach is a Nonlinear Disturbance Observer (NDOB) for the estimation of the disturbances in the NDPO. In the second approach, a novel implementation of a High-Order Sliding-Mode (HOSM) observer is developed to estimate the true value of the states as well as the reaction terms. The proposed observers are tested and compared through a simulation example at different operating points and their performance and robustness is analysed over a given case study, the New European Driving Cycle. •We model an PEMFC to estimate the internal concentrations.•Two nonlinear distributed parameters observers are designed.•The observers estimate the reaction and water transport terms of the PEMFC.•Novel design of a HOSM observer.•The designed observers are able to estimate the internal conditions of the PEMFC.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2016.06.041