Method and apparatus for controlling and enhancing tractive effort in DC traction motors on locomotives
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United States of America Patent
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Oct 7, 2014
Grant Date -
Jun 28, 2012
app pub date -
Nov 23, 2011
filing date -
Nov 24, 2010
priority date (Note) -
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Abstract
A system is provided for powering a locomotive. The system comprises a plurality of traction motor assemblies, each assembly comprising an armature and a field; a first power source connected in series to each armature; and in specific circumstances, a second power source connected across the fields. A method of controlling traction power in a locomotive is also provided, the method comprising: identifying which of a plurality of traction motor armatures in the locomotive has a highest current reading; and ramping a traction motor field current to equal the highest current reading for the traction motor armatures.
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