A decoupled controller for fuel cell hybrid electric power split

Author

Domenico, Domenico Di ; Fiengo, Giovanni

Author_Institution

Dipt. di Ing., Univ. degli Studi del Sannio, Benevento

fYear

2008

fDate

11-13 June 2008

Firstpage

597

Lastpage

604

Abstract

The power management of an hybrid system composed of a fuel cell, a battery and a DC/DC power converter is developed. A decoupled control strategy is proposed, aimed at balancing the power flow between the stack and the battery and avoiding electrochemical damage due to low oxygen concentration in the fuel cell cathode. The controller is composed of two components. The first controller regulates the compressor, and as consequence the oxygen supplied to the cathode, via a classic proportional-integral controller. The second controller optimally manages the current demanded by the fuel cell and battery via linear-quadratic control strategy acting on the converter. The closed loop performance has been tested both in simulation and in real-time simulation using dSpace equipments.

Keywords

DC-DC power convertors; PI control; closed loop systems; fuel cells; hybrid power systems; linear quadratic control; power system control; DC-DC power converter; closed loop performance; dSpace equipments; decoupled controller; electrochemical damage; fuel cell cathode; fuel cell hybrid electric power split; linear-quadratic control; power flow balance; proportional-integral controller; Battery management systems; Cathodes; Energy management; Fuel cells; Load flow; Optimal control; Pi control; Power system management; Proportional control; Testing; Fuel cell; Hardware-in-the-Loop; hybrid system; optimal control; power management;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2008

Conference_Location

Seattle, WA

ISSN

0743-1619

Print_ISBN

978-1-4244-2078-0

Electronic_ISBN

0743-1619

Type

conf

DOI

10.1109/ACC.2008.4586557

Filename

4586557