| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-power supply load drive fuel battery system which prevents both a fuel battery and a power storage device from being brought into connected states, avoids the occurrence of the instability of a DC end side voltage of an inverter which drives a motor at an AC end side, and reduces a loss of an SUDC (step-up/down converter) at the power storage device side, and a furthermore battery automobile.SOLUTION: An SOC of a BAT 20 is increased more than usual so that only the BAT 20 is brought into a connected state while controlling an FC voltage Vfc of an FC 18 by an SUC (step-up converter) 21, and a BAT voltage Vbat being a DC end side voltage Vinv of an INV 16 which drives a drive motor 14 is maintained at a high voltage. Since the connected state is brought about, a frequency of the occurrence of a switching loss of an SUDC 22 can be reduced.SELECTED DRAWING: Figure 1 |
