MULTIPLE PHASE GENERATORS

Multiple Phase Generators
     Techniques have been develop on how to increase the power produce by a AC generators. One of the techniques used is increasing the number of phases. Increasing the number of phases means that increasing the number of outputs with same frequency, same magnitude but with different in phase angles. 
For example in a two phase AC generator, the phase angle differences between the two output voltage is

                                                        V₁=V<0⁰ and    V₂=V<90⁰

The power produce by a two phase AC generator is twice that of the single phase generator.
And the commonly used multiple phase generator is the 3pahse AC generator. It power is 3times that of the single phase AC generator. The voltage output of a 3phase generator is shown.

                                       V_a=V<0⁰ and    V_b=V<-120⁰ and    V_c=V<120⁰
and the output waveform is