In The Netherlands and Germany the Neutral has to be connected to the starpoint of the supply transformer, so a transformer with a star connection at the output is required.
The Earth in a non MEN situation can be derived via a good ground rod or rods.
Not sure what the rules are in Italy. There are some old systems around there still like 125 Volts AC in remote areas.
The product of rotation, excitation and flux produces electricty.
