5 ms·
yes, but: 1. You need a _lot_ of insulation at 50kV 2. I'm no expert but I very much doubt you could run a motor at anything approaching that voltage. Current
by spinningslate 4y ago
yes, but:
1. You need a _lot_ of insulation at 50kV
2. I'm no expert but I very much doubt you could run a motor at anything approaching that voltage. Current electric cars, for example, run c400V as the main motor supply. So there would need to be voltage conversion, which adds weight and bulk.
- quickthrowman 4y agoI know for certain there are 13.8 kV motors, I don’t see any reason why higher voltages aren’t possible for motors.
- bobthepanda 4y agoUsually you need to transform power anyways on a train, because * lights, plug sockets, etc. are all at normal household voltages * often trains will run on multiple voltages, so a transformer needs to be involved anyways * lower voltages let you have thinner insulation, so thinner wires let you save space for things that matter more like a bigger passenger cabin
- tomek_ycomb 4y agoThere already is conversion. The motors are inductors and phase current can be much higher than battery current
- kwhitefoot 4y agoQuite a few of the newer EVs have 800 V batteries to make fast charging more practical with cables light enough to be handled by ordinary humans. You can make an electric motor run on pretty much any combination of voltage and current. You just have to make the appropriate trade-offs in insulation, conductor cross section, etc. ABB (my former employer) makes motors that run on 13.8 kV with a power of up to 29 MW. See https://new.abb.com/motors-generators/high-voltage-induction-motors/modular-induction-motors https://new.abb.com/motors-generators/high-voltage-induction...