A ubiquitous power with DC micro-grid for Sectional Compact Emergency Shelters

This paper proposes a mobile power for the Sectional Compact Emergency Shelter (SCES), which is used under the great disaster. The proposed mobile power consists of the Fuel Cells (FCs), photovoltaic cells (PVs) and lithium-ion rechargeable batteries. This mobile power is constructed in a container car. Therefore, the constructed mobile power is easily moveable and constructible with the SCESs. The authors have named it “a ubiquitous power.” The FCs in the ubiquitous power can supply electrical power and waste-heated water. The waste-heated water can be used to the SCESs for a floor heating in winter. The lithium-ion rechargeable batteries level the difference between generated power and consumed power in the SCESs. The number of the SCESs, which proposed one ubiquitous power can supply power continuously, is decided considering both the depth of discharge (DOD) of the batteries and the thermal energy of the waste-heated water from the FCs. It is shown that proposed one ubiquitous power can supply twenty SCESs in winter in Japan.