Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Shigenori Koga

Hiroshi Tsukuda

Mineaki Matsumoto

Norihisa Matake

Takuma Nagai

Yuichi Teramoto

Masanori Nishiura

A combined power generation system is promptly activated, and stable operation thereof is provided. A control apparatus of the combined power generation system that generates power by performing cooperative operation combining an SOFC and an MGT, in which the combined power generation system includes: an exhaust fuel gas supply line that supplies exhaust fuel gas to a combustor of the MGT from the SOFC; a recirculation line that branches from the exhaust fuel gas supply line to flow the exhaust fuel gas to the SOFC; and a flow rate adjustment valve provided on a path of the exhaust fuel gas supply line, and in which a gain to an opening of the flow rate adjustment valve is adjusted according to an cooperative operation state of the SOFC and the MGT.

Control apparatus and control method, and combined power generation system provided therewith

An interconnector material having a high degree of densification, a unit cell for a solid oxide fuel cell that has a high degree of gas tightness at the contact interface between the electrolyte and the interconnector, and a solid oxide fuel cell having superior reliability are provided in an inexpensive manner. A material for a solid oxide fuel cell interconnector, comprising (SrE)TiO(wherein x satisfies 0.01&#x2266;x&#x2266;0.5, and E represents one or more elements selected from the group consisting of La, Pr, Nd, Sm and Gd) and AlO, wherein the AlOcontent relative to the (SrE)TiOis not less than 2 mol % and not more than 10 mol %.

Material for solid oxide fuel cell interconnector, unit cell for solid oxide fuel cell, and solid oxide fuel cell

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Tokyo, Japan

Shigenori Koga