The sinusoidal single and 3 phase waveform的副本
In this applet you can study
a) a single phase voltage that is given by the equation U=Uo*sin(ωt) where Uo stands for the maximun voltage ω for 2πf (f for frequency) t for time.
b) from the equation U=Uo*sin(ωt-φ) the phase - lead or U=Uo*sin(ωt+φ) phase lag, where φ stand for the angle that is given by the various rates for example 2π/3 or π/4.
by giving a 120o angle between the 3 voltages you demonstrate the 3 phase voltage