Abstract
The present paper shows the discussion on the experimental investigation conducted with 300W class planar type solid oxide fuel cell (SOFC) cell stacks. The experimental investigation focuses on transient characteristics of the cell performance to the current manipulation, being assumed that the manipulation is appropriate methodology for power control policy in the practical SOFC use under the load-following operation. The stack was forcibly heated by the external sources to keep the cell operating temperature. The dynamic experiment was demonstrated under the constant operating temperature while being purely fueled by hydrogen. The fuel flow rate was manipulated to level the fuel utilization factor under the current change operation. The voltage deterioration was found on the manipulation with higher fuel utilization, though the achieved DC efficiency was contrary higher. Obtained experimental result shows the reasonability of the fuel utilization factor as an operative reference of the control scheme.
