Development of Several kW SOFC System using Segmented-cells

Abstract

In this paper we present recent results of developments for segmented-in-series SOFCs at Tokyo gas. We have been developing segmented-in-series SOFCs for several years. The segmented-cell is a unique idea of eliminating the cell stacking process in assembling processes. For high performance of an SOFC system with the segmented-cells, the cell configuration must be designed optimally and a DC module must be devised to draw the potential of the segmented-cell. In addition, to obtain higher conversion efficiency for the AC system using the segmented-cells, the DC/AC conversion efficiency of the power conditioner should be improved and the energy consumption of the BOP must be reduced. By improving the DC module, developing the power conditioner with a high DC/AC conversion efficiency and reducing the BOP loss, the high net conversion efficiency of the system was achieve