METHOD OF GENERATING INJECTED CURRENT FOR FUEL CELL STACK AND APPARATUS PERFORMING THE SAME

摘要

According to an embodiment of the present invention, an apparatus for generating an injected current for a fuel cell stack comprises: a first DC-DC converter which converts a DC current of a voltage corresponding to a battery for a vehicle into a DC current of a specific voltage; a second DC-DC converter which converts a DC current of a voltage generated by a regenerative braking in a high voltage part into a DC current of a specific voltage or receives a DC current which is converted by the first DC-DC converter and converts into a DC current of the specific voltage; and a control part which controls the operation of any one converter between the first DC-DC converter and the second DC-DC converter in accordance with the power state of the high voltage part. Accordingly the present invention is configured to safely operate a fuel cell stack by providing a DC current of a voltage which is generated by regenerative braking at a high voltage part using a bidirectional DC-DC converter into a DC current of a specific voltage through a step down, and providing a DC current of a voltage corresponding to a battery for a vehicle to a high voltage part through a step up when the electric power of the high voltage part is momentarily insufficient.