First hydrogen locomotive started working in Poland.
They already do, they just have a diesel generator to make the electricity
Guessing that replacing that with a large battery that charges at night is unreasonable due to the torque needed? You’d probably need a battery larger than a train engine to be able to even do a few stops and starts. Which is why electric trains are wired all the time.
If someone knows for sure I’m super curious!
Is this whole thread a joke or have you people not heard of electrified rail
I mentioned it in my comment that you’re replying to. “wired” could easily refer to above or below, just continuous current is what matters for this discussion. Why do ask?
Edit: Wait did you think we can electrify all rails? Outside of major cities it’s a maintenance and safety nightmare, and a LOT of our freight moves via rail.
The problem with battery trains is that locomotives hardly sit around long enough to charge unless it’s some sort of switcher or in for maintenance. Really the only use case for battery locomotives outside of switchers is passenger service where it’s fairly common for a train to sit for eight plus hours. Amtrak and Siemens are actually doing this with 15 of the new airo trainsets which will run on the empire line. The trainsets will specifically run on battery while within the new York city tunnels where diesel locomotives are only allowed to operate under emergency.
There is probably a use for train with battery on partially electrified lines.
The train charge on the electrified part and use batteries on the rest.
If I ran the local power grid I’m not sure I’d want cargo trains using line power for traction, unless there was some mandated weight or length limit 🤔
Without some cargo limit I think sections of the line’s voltage will just collapse under the current being drawn, whenever the cargo train moves off from a complete stop - especially if it’s a multi mile long cargo train that seems common in the US
There’s little chance of that happening, but even if there was, they’d just use batteries for the acceleration phase. That’s what hydrogen fuel cell trains do anyway, because the fuel cell can’t produce enough power on it’s own to accelerate the train from a stop, so they’re used to charge batteries that allow it to do so.
The reason why there’s little chance of that happening is there are already very many cargo trains powered by overhead lines. We’ve been doing it for 150 years and in continental Europe there are many sections of track that are entirely electrified because it made more economic sense than running a wasteful (compared to a steam power plant) diesel generator to power the already electric engines of the trains.
Without some cargo limit I think sections of the line’s voltage will just collapse
I think this guy never learned about resistance. Maybe he skipped physics classes, maybe he didn’t even have them yet.
Even better, we could also put cables above the train and connect them to an even bigger diesel generator located somewhere close to the railway. That would make the locomotive lighter and the energy production more efficient. Better yet, replace the diesel with uranium and you can easily power many trains.
That would make the locomotive lighter
That’s not an advantage. You want your loco to be as heavy as possible for traction. If they were switching it to pantograph and it was lighter they’d add iron, or something else to make up the difference
