Abstract
Fuel Cell (FC) that works under the influence of chemical changes can not respond rapidly to sudden load changes. To overcome it, one normal method is to enlarge the capacity of FC, which results in the efficiency decreasing. As another effective method, an electric power storage device is used. Therefore, Electric Double Layer Capacitor (EDLC) that is not influenced by chemical reactions is paid attention. The purpose of this research is to overcome the problem of the load change by using the EDLC connected to the FC. The authors examined the load changes in two kinds of power supply modes. In one case, the power was supplied by FC only, while in another case, FC and EDLC connected in parallel were used for power supply. The results obtained from the comparison between two cases show that the output power of FC can be reduced by using EDLC. As a result, the power supply mode of the parallel connection of FC and EDLC can effectively solve the problem of load change.
