Patent ID: 11962049
Assignee: HYUNDAI MOTOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. A method for controlling a fuel cell system including a fuel cell stack, a balance of plant (BOP), and a fuel cell controller, the method including:
starting, by a controller, a start procedure or a stop procedure of the fuel cell system;
operating, by the controller, a first power converter including a bidirectional DC/DC converter or a second power converter including a single bidirectional DC/DC converter module according to starting the start procedure or the stop procedure; and
supplying, by the first power converter or the single bidirectional DC/DC converter module of the second power converter, driving power to the BOP using electrical energy of a first voltage battery or a second voltage battery,
wherein an output voltage of the second voltage battery is higher than an output voltage of the first voltage battery.