Optimal Design of Fractional Order PID Controllers for Solid Oxide Fuel Cell System Employing PSO Algorithm

Abstract

Solid Oxide Fuel Cells (SOFCs) are gaining
attraction in order to facilitate various applications owing
to portability, low pollution and high efficiency. However,
due to strong nonlinearity, fast variations in loading
conditions and sluggish dynamics, regulation of the output
voltage of SOFCs is disturbed. This paper aims to enhance
the dynamic performance of SOFC by employing PI, PI
Fast, PIDF, 2-DOF PID and PSO optimized FO-PID
controllers under uncertain input conditions. The PID
tuner is used for tuning the PI, PI fast, PIDF and 2-DOF
PID controller parameters. The PSO technique is utilized
for optimizing of FO-PID controller. The SOFC output
with various controllers is compared in terms of
performance specifications such as peak overshoot, settling
time, steady state error and rise time. The comparison of
computer simulation results manifests that the proposed
PSO-FOPID controller scheme yields in far better
performance with SOFC subjected to uncertain input.
Index Terms—FOPID-Fractional Order PID,