G'day Zule,
I have heard of E lockers as opposed to air lockers applied to 4x4 off road vehicles.
To lock the differentials during serious off road bashing.
As to just how an AC traction diesel locomotive is electrically controlled, I don't know.
But, naturally there are a lot of micro-processor electronics involved, much more so than with DC traction motors.
I will google and see if I can discover any info.
Steve.
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