Power Supply Switching Device And Drive Control Apparatus

Abstract: This power supply switching device (30) has a switching circuit (31) and a switching control unit (32). The switching circuit (31) is connected between a first power conversion device (10) and a low-voltage power storage device (20) and forms an electrical path between the first power conversion device (10) and the low-voltage power storage device (20). The switching control unit (32) controls the switching circuit (31) so as to electrically separate the first power conversion device (10) and the low-voltage power storage device (20) from each other when supplying power from a main power supply (92) to the first power conversion device (10) and electrically connects the first power conversion device (10) with the low-voltage power storage device (20) when the supply of power from the main power supply (92) to the first power conversion device (10) is stopped in a state where a railcar has been started.

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