Electric vehicle propulsion control device and railway vehicle system

摘要

An electric vehicle propulsion control device having a power storage device includes: a first switch configured to perform opening and closing of a circuit between an overhead wire and a power converting unit; a second switch configured to perform opening and closing of a circuit between the power converting unit and a motor; a switching unit configured to select a terminal on a side of the power converting unit to which the first switch is connected or a terminal on a side of the power converting unit to which the second switch is connected and connect the terminal to the power storage device; and a control unit configured to control the power converting unit, the first switch, the second switch, and the switching unit to switch a connection destination of the power converting unit and cause the power converting unit to operate as an inverter or a DC/DC converter.

主权项

1. An electric vehicle propulsion control device including a power storage device, the electric vehicle propulsion control device comprising:
a power converting unit capable of performing bidirectional power flow control and configured to convert, when direct-current power from the power storage device is input from a first terminal side, the direct-current power into desired alternating-current power and output the alternating-current power from a second terminal side, convert, when direct-current power from a direct-current power supply source excluding the power storage device is input from the first terminal side, the direct-current power into desired direct-current power or alternating-current power and output the direct-current power or the alternating-current power from the second terminal side, and convert, when the direct-current power from the direct-current power supply source is input from the second terminal side, the direct-current power into desired direct-current power and output the direct-current power from the first terminal side; and a control unit configured to control an operation of the power converting unit, wherein when converting the direct-current power from the power storage device input from the first terminal side into desired alternating-current power and outputting the alternating-current power from the second terminal side, the control unit causes the power converting unit to operate as an inverter, when converting the direct-current power from the direct-current power supply source input from the first terminal side into desired direct-current power and outputting the direct-current power from the second terminal side, the control unit causes the power converting unit to operate as a step-down chopper, when converting the direct-current power from the direct-current power supply source input from the first terminal side into desired alternating-current power and outputting the alternating-current power from the second terminal side, the control unit causes the power converting unit to operate as the inverter, and when converting the direct-current power from the direct-current power supply source input from the second terminal side into desired direct-current power and outputting the direct-current power from the first terminal side, the control unit causes the power converting unit to operate as a step-up chopper.