3 ms·
What I ask myself is how did they transform voltage of the engine generators? I highly doubt the locomotive electric motors which were driven by the locomotive
by jhoechtl 6y ago
What I ask myself is how did they transform voltage of the engine generators? I highly doubt the locomotive electric motors which were driven by the locomotive generator were operating at 220V.
They may have "simply" modified the generators exciting field strength. If so, these generators once were designed with ample allowance.
- dboreham 6y agoA town isn't supplied at 220V. More like 33KV. At least 7.5KV.
- mannykannot 6y agoMy understanding is that the voltage generated by diesel-electric locomotives is variable, topping out in the low kilovolt range, and it would be counter-productive to control for a given voltage (other than to avoid exceeding the equipment maximum rating); the voltage is allowed to vary to match the speed-dependent back-EMF of the traction motors. If so, then a locomotive is unsuitable for patching into a multi-kilovolt network without a suitable transformer, and there will be voltage-matching and regulating problems to be resolved in patching into any level of the network.
- hwillis 6y agoDC diesel electrics are commutated for quite low starting voltage- wheelspin is immensely expensive to repair. Then they can tweak throttle to hit voltage, but they'd have to be balancing that with frequency unless they were very lucky.