HYDROGEN GENERATION APPARATUS, FUEL CELL SYSTEM INCLUDING THE SAME, METHOD OF OPERATING HYDROGEN GENERATION APPARATUS, AND METHOD OF OPERATING FUEL CELL SYSTEM

摘要

A hydrogen generation apparatus according to the present invention includes: a hydrogen generator (1); a combustor (2) configured to heat the hydrogen generator (1); a combustion gas supply device; an air supply device (8); a CO sensor (5) configured to detect carbon monoxide contained in a flue gas; and a controller (6). In a case where a temperature of the hydrogen generator (1) is lower than or equal to a first temperature set in advance, or in a case where a first period set in advance has elapsed after combustion by the combustor (2) has ended, the controller (6): causes the combustion gas supply device to supply a raw material gas as a combustion gas to the combustor (2); and controls an air-fuel ratio to be out of a predetermined range, the air-fuel ratio being a ratio between air and the combustion gas that are supplied to the combustor (2). In a case where the CO sensor (5) does not detect a predetermined carbon monoxide concentration, the controller (6): determines that the CO sensor (5) is in an abnormal state; gives a notification that the CO sensor (5) is in an abnormal state; or performs control to stop the hydrogen generation apparatus (101) from operating.