Publication

Algebraic observer-based output-feedback controller design for a PEM fuel cell air-supply subsystem

Journal Article (2018)

Journal

IET Renewable Power Generation

Pages

1714-1721

Volume

12

Number

14

Doc link

http://dx.doi.org/10.1049/iet-rpg.2018.5421

File

Download the digital copy of the doc pdf document

Abstract

In this paper, an algebraic-observer-based output-feedback controller is proposed for a Proton Exchange Membrane Fuel Cell (PEMFC) air-supply subsystem, based on both algebraic differentiation and sliding-mode control approaches. The goal of the design is to regulate the Oxygen Excess Ratio (OER) towards its optimal setpoint value in the PEMFC air-supply subsystem. Hence, an algebraic estimation approach is used to reconstruct the OER based on a robust differentiation method. The proposed observer is known by its finite-time convergence and low computational time compared to other observers presented in the literature. Then, a twisting controller is designed to control the OER by manipulating the compressor motor voltage. The parameters of the twisting controller have been calculated by means of an off-line tuning procedure. The performance of the proposed algebraic-observer-based output-feedback controller is analyzed through simulations for different stack-current changes, for parameter uncertainties and for noise rejection. Results show that the proposed approach properly estimates and regulates the OER in finite-time.

Categories

automation, control theory, observability.

Author keywords

fuel cells, feedback controller, observers

Scientific reference

Z. Baroud, N. Gazzam, A. Benalia and C. Ocampo-Martínez. Algebraic observer-based output-feedback controller design for a PEM fuel cell air-supply subsystem. IET Renewable Power Generation, 12(14): 1714-1721, 2018.