Power supply switching device, drive control apparatus, and moving body

A power supply switching device, comprising:

• a switching circuit connected to a first power conversion device and a low-voltage power storage device and configured to form an electrical path between the first power conversion device and the low-voltage power storage device, the first power conversion device converting supplied power into power to be supplied to an electric motor that generates propulsion for a railway vehicle, the first power conversion device supplying the converted power to the electric motor, the low-voltage power storage device discharging at a voltage lower than applied voltage that is applied to the first power conversion device when power is supplied from a main power source to the first power conversion device;
• and
• switch controlling circuitry to control the switching circuit to electrically disconnect the first power conversion device and the low-voltage power storage device from each other when power is supplied from the main power source to the first power conversion device and to control the switching circuit to electrically connect the first power conversion device and the low-voltage power storage device to each other when power supply from the main power source to the first power conversion device is stopped in a powered-on state of the railway vehicle.