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Hydrogen locomotive
(www.money.pl)
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this post was submitted on 17 Sep 2023
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Overhead wires aren't 3-phase, so convertor is required anyway.
A lot of locomotion uses DC motors, so they can run line voltage directly.
And what operational voltage of such motor?
1.5KV DC is reasonably common for commuter rail.
1.5KV doesn't sound like operating voltage of DC motor. Maybe you wanted to say BLDC instead?