| 摘要 |
<p>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 direct current of a voltage corresponding to a battery for a vehicle into a direct current of a specific voltage; a second DC-DC converter which converts a direct current of a voltage generated due to a regenerative break in a high voltage unit into the direct current of the specific voltage, or receives the direct current converted by the first DC-DC converter to convert the received direct current into the direct current of the specific voltage; and a control unit which controls an operation of any one converter among the first DC-DC converter or the second DC-DC converter according to an electric power state of the high voltage unit. Therefore, according to the present invention, the direct current of the voltage generated due to the regenerative break in the high voltage unit is lowered to the direct current of the specific voltage by using the bilateral DC-DC converter to be provided. When electric power of the high voltage unit is short in a moment, the direct current of the voltage corresponding to the battery for the vehicle is raised to be provided to the high voltage unit, thereby stably operating the fuel cell stack.</p> |
