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

Claim 0:
1. An apparatus of controlling a fuel cell system, the apparatus comprising:
a fuel cell system including a fuel cell stack, a balance of plant (BOP) configured to operate the fuel cell stack, and a fuel cell controller configured to control the BOP;
a first power converter located between the fuel cell stack and a first voltage battery and including a bidirectional DC/DC converter;
a second power converter located between the fuel cell stack and a second voltage battery and including a single bidirectional DC/DC converter module; and
a controller configured to operate the first power converter or the single bidirectional DC/DC converter module of the second power converter, when the fuel cell system is started or stopped, and configured to control the first power converter or the single bidirectional DC/DC converter module of the second power converter to supply driving power to the BOP using electrical energy of the first voltage battery or the second voltage battery,
wherein an output voltage of the second voltage battery is higher than an output voltage of the first voltage battery.