FUEL BATTERY CONTROLLER, FUEL BATTERY SYSTEM INCLUDING THE SAME, HYBRID POWER GENERATION SYSTEM, AND CONTROL METHOD OF FUEL BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a fuel battery controller by which the temperature difference between groups of fuel battery cells can be reduced in a simple and convenient way.SOLUTION: An SOFC controller comprises: a plurality of cell groups each including cells; choppers 3 provided to correspond to cell groups, and serving to convert a first output level of power generation outputs of the corresponding cell groups to a second output level different from the first output level; temperature detection parts operable to detect a temperature at an end of at least one cell group in a direction toward the one end of the plurality of cell groups with respect to the cell group disposed at the center thereof, and a temperature at the center of the at least one cell group, provided that the at least one cell group is disposed at one end of the plurality of cell groups in the direction toward the one end of the plurality of cell groups; and a control unit 5 operable to control the choppers 3 so that the temperature difference between the cell groups, calculated based on the temperatures detected by the temperature detection parts at the end and center of the at least one cell group becomes smaller than a predetermined value.