INRUSH CURRENT PREVENTION APPARATUS, CONTROL APPARATUS, AND INRUSH CURRENT PREVENTION METHOD
An inrush current prevention apparatus used in a specific base in a DC power supply system, the DC power supply system including multiple bases each having a power supply device and being connected by a power supply line, the inrush current prevention apparatus comprising: a switching unit; a current reduction unit connected in parallel with the switching unit; a processor; and a memory storing instructions that cause the processor to execute a process including bringing the switching unit into a connected state when the specific base is supplying power, wherein when a predetermined current occurs between a power supply device in the specific base and a power supply device in another base, by bringing the switching unit into a disconnected state, a current between the power supply device in the specific base and the power supply device in the other base is caused to flow to the current reduction unit.
1 . An inrush current prevention apparatus used in a specific base in a DC power supply system, the DC power supply system including a plurality of bases, the plurality of bases each having a power supply device and being connected by a power supply line, the inrush current prevention apparatus comprising:
a switching unit;
a current reduction unit connected in parallel with the switching unit;
a processor; and
a memory storing instructions that cause the processor to execute a process, the process including
bringing the switching unit into a connected state when the specific base is supplying power, wherein
when a predetermined current occurs between a power supply device in the specific base and a power supply device in another base, by bringing the switching unit into a disconnected state, a current between the power supply device in the specific base and the power supply device in the other base is caused to flow to the current reduction unit.
2 . The inrush current prevention apparatus according to claim 1 , wherein
the predetermined current is an inrush current, and the inrush current is determined to have occurred when a current change amount equal to or larger than a threshold is detected by a current sensor provided in the specific base.
3 . The inrush current prevention apparatus according to claim 1 , wherein
the process further includes bringing the switching unit into a disconnected state when power of a power supply device in a base other than the specific base is turned on.
4 . A control apparatus connected to the inrush current prevention apparatus according to claim 1 , the control apparatus comprising:
a processor; and
a memory storing instructions that cause the processor to execute a process, the process including
determining whether the predetermined current has occurred based on a measurement result of a current in the specific base; and
bringing the switching unit into a disconnected state when the determination unit determines that the predetermined current has occurred.
5 . An inrush current prevention method executed by an inrush current prevention apparatus used in a specific base in a DC power supply system, the DC power supply system including a plurality of bases, the plurality of bases each having a power supply device and being connected by a power supply line, the inrush current prevention method comprising:
bringing a switching unit into a connected state when the specific base is supplying power; and
bringing the switching unit into a disconnected state to cause a current between a power supply device in the specific base and a power supply device in another base to flow to a current reduction unit connected in parallel with the switching unit when a predetermined current has occurred between the power supply device in the specific base and the power supply device in the other base.