Enhanced Power Generation in SOFCs Using Artificial Limits on Actuator Control Signals
Author(s) -
Maryam Sadeghi Reineh,
Faryar Jabbari
Publication year - 2018
Publication title -
journal of electrochemical energy conversion and storage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 13
eISSN - 2381-6910
pISSN - 2381-6872
DOI - 10.1115/1.4040057
Subject(s) - actuator , cathode , power (physics) , control theory (sociology) , power control , limiting , heat exchanger , usable , inlet , solid oxide fuel cell , electricity generation , volumetric flow rate , automotive engineering , engineering , computer science , electrical engineering , mechanical engineering , control (management) , mechanics , electrode , chemistry , physics , world wide web , anode , quantum mechanics , artificial intelligence
In this paper, we study a solid oxide fuel cell (SOFC) controlled by a multi-input multi-output (MIMO) compensator, which uses the blower/fan power and cathode inlet temperature as actuators. The usable power of the fuel cell (FC) is maximized by limiting the air flow rate deliberately when an increase in power is demanded. Possible rate bounds on the cathode inlet temperature are also modeled. These bounds could represent the physical limitations (due to slow dynamics of heat exchangers) and/or a control concept for accommodating the power saving objective. Applying proper limits to the amplitude and rate of the actuator signals, and incorporating antiwindup (AW) techniques, can raise the net power of the FC by 16% with negligible effects on the spatial temperature profile.
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