Propulsion control device and propulsion control method

摘要

An abnormality detector detects whether an abnormality is occurring in a power converter based on electric current that the power converter outputs and an electric current detector detects. When a value that includes the number of power converters in which an abnormality is occurring, and that indicates amount of reduction in propelling force of a vehicle satisfies a judgment criterion, a determiner determines that an increase is required in the output of the power converter in which no abnormality is occurring, among multiple power converters, to a level higher than normal output. An output controller stops the power converter if notified by the abnormality detector of an occurrence of an abnormality in the power converter. The output controller controls the output of the power converter, for which the determiner determines that the increase is required so that the output becomes higher than the normal output.

主权项

1. A propulsion control device, comprising:
a plurality of power converters to output power to drive main electric motors for driving wheels; an output controller to control the output of a power converter of the plurality of power converters; an abnormality detector to detect whether an abnormality is occurring in the power converter; and a determiner to determine, when a value that is based on a number of power converters in which an abnormality is occurring, among the plurality of power converters, and that indicates amount of reduction in propelling force of a vehicle, satisfies a judgment criterion, that an increase is required in the output of at least one of the power converters in which no abnormality is occurring, among the plurality of power converters, to a level higher than a normal output that is an output when no abnormality is occurring in any of the plurality of power converters; wherein the output controller performs control so that the output of the power converter, for which the determiner determines that the increase is required in the output to the level higher than the normal output, becomes higher than the normal output.