Ok, It seems like most polyphase systems are odd numbers (3 phase for commercial dist, 5 phase in wind powered generators.), with the esxpetion of 2 phase, where 1 phase is 90 degrees out of phase from the other. Is there a reason for an odd number of phases, or is it because i've just never come accross even number phase systems. Can any number of phases be connected in series (such as 3 phase delta) and/or parallel (such as 3 phase star)?
