FUEL CELL SYSTEM AND CONTROL SYSTEM FOR SAME

摘要

Disclosed is a fuel cell system equipped with a fuel cell (1); a reformer (2); a fuel treatment unit (4) that includes a selective oxidizer (3) that causes a reaction of carbon monoxide included in reformed gas and oxygen in the air; an air blower (6) that feeds air used in power generation to a cathode of the fuel cell (1), and feeds air used in selective oxidizing reaction to the selective oxidizer (3); a cathode airflow path (7) one end thereof connected to the cathode of the fuel cell (1) cathode, and another end thereof connected to the air blower (6); a selective oxygen airflow path (8) one end thereof connected to a branching point with the cathode airflow path (7), and another end thereof connected to the selective oxidizer (3); a selective oxygen airflow meter (9) that measures an airflow rate supplied to the selective oxidizer (3); and a control unit (10) that controls the air blower (6). The cathode airflow path (7) and the selective oxygen airflow path (8) are formed so that the airflow rate fed to the selective oxidizer (3) is lower than the airflow rate fed to the cathode. The control unit (10) controls feedback of the power capacity of the air blower (6) based on the airflow rate measured by the selective oxygen airflow meter (9) so that the airflow rate fed to the selective oxidizer (3) is at a target value.