Traction motor drive system for a locomotive

摘要

A traction motor drive system includes a plurality of armatures arranged in parallel with each other and a plurality of field circuits arranged in series with one another. The plurality of field circuits is arranged in parallel with the armatures. The traction motor drive system also includes a field isolation system including a shunt circuit associated with at least one field circuit. The field isolation system includes a first field switch arranged in series with the plurality of field circuits and configured to switch between a first terminal of the shunt circuit and a first field terminal of at least one field circuit. The field isolation system includes a second field switch, arranged in series with the plurality of field circuits and configured to switch between a second terminal of the shunt circuit and a second field terminal of at least one field circuit.

主权项

1. A traction motor drive system, comprising:
a plurality of armatures arranged in parallel with one another; a plurality of field circuits arranged in series with one another, each field circuit associated with a respective one of the armatures, wherein the plurality of field circuits is arranged in parallel with the plurality of armatures; a field isolation system, comprising:
a shunt circuit associated with at least one of the field circuits and comprising first and second shunt terminals;a first field switch arranged in series with the plurality of field circuits and configured to switch between the first shunt terminal of the shunt circuit and a first field terminal of the at least one of the field circuits; anda second field switch arranged in series with the plurality of field circuits and configured to switch between the second shunt terminal of the shunt circuit and a second field terminal of the at least one of the field circuits.