Fuel cell power control system and method
AssigneesHyundai Motor Cpompany, Kia Corporation
InventorsByung Jun Sung, Sang Pil Jang
Life of this patent
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Abstract
Proposed is a fuel cell power control system. A fuel cell generates electric power. A load unit is electrically connected to the fuel cell. A DC/DC converter is disposed between the fuel cell and the load unit to convert the electric power between a low side of the DC/DC converter electrically connected to the fuel cell and a high side of the DC/DC converter electrically connected to the load unit. A battery is electrically connected to the high side of the DC/DC converter to be parallel to the load unit. A controller monitors a voltage of the load unit, the battery, or the high side of the DC/DC converter, and controls the electric power input to the load unit or output from the load unit in accordance with the monitored voltage.
Claims5
A fuel cell power control method comprising:
- converting, by a DC/DC converter, electric power between a low side of the DC/DC converter connected to a fuel cell and a high side of the DC/DC converter connected to a battery and a load unit;
- monitoring a voltage of the high side of the DC/DC converter, or a voltage of the load unit or the battery connected to the high side of the DC/DC converter;
- comparing the monitored voltage with a first predetermined voltage lower than a maximum allowable voltage of the DC/DC converter;
- and
- controlling the electric power input to the load unit or output from the load unit in accordance with the monitored voltage, wherein when the monitored voltage is equal to or higher than the first predetermined voltage, the electric power input to the load unit is increased or the electric power output from the load unit is reduced so that the electric power charged in the battery is reduced.
Dependencies are inferred from the claim text.