as long you have a variable DC power supply wich goes from 0 -> 36 V you'll be ok
so any Train power supply will d the trick
as long you have enough power
you must count that a playmo train consumes aprox 1 amp (variable on how many coaches he needs to pull
playmobil transformers go up to 16V DC as I recall
I built my powersupply myself up to 36 V
makes the trains go faster
welcome in the world of traincrashes
and goodluck