Ok, but I still do not understand why the difference from 400/380 to 230 and in the case of USA 220 to 110.
Surely the frequency does not influence the voltage generated, provided the windings/lamination core are designed for the specific frequency.
Looking at how the center tap of a 3 phase alternator/motor is determined, I cannot understand how a different "formula" can be used for the two different systems.
Did you like this article? Share it with your favourite social network.