| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve continuous operation without generating an inter-formation non-power-supply time, while controlling a phase, a current, and a voltage of output without stopping a power converter when a load short-circuit is detected. <P>SOLUTION: A power supply device for a vehicle includes the power converter 1, which converts DC power 14 into AC power so as to supply power to a load 8 connected to a three-phase load busbar 17; a current detector 4 for detecting an output current of the power converter; a circuit breaker 7 provided on the output side of the power converter; a voltage detector 6 provided on the power converter side of the circuit breaker, a power conversion controller 10 for controlling so as to allow the power converter to output an AC current having a prescribed voltage and a prescribed frequency; a load short-circuit detecting part 20 for determining the load short-circuit from a detection value of the current detector and that of the voltage detector; and a current limit circuit 12 that instructs a limit value of a d-axis output current and that of a q-axis output current, which are for instantaneously adjusting the direction and magnitude of an output current vector to each prescribed set value, when the load short-circuit detection part determines that it is the load short-circuit, to the power conversion controller 10. <P>COPYRIGHT: (C)2008,JPO&INPIT |
