Re: What type of power supply should i use for the proteus file?
Try the Generator Mode>Sine Generator, putting attention in the Delay>Phase parameter, which should be 0, 120 and 240 respectively.
For the Voltmeters, try the Probe Mode>Voltage, which will give you the proper voltage values in the probes.
After putting the three probes, for a better graph, try the Graph Mode>Analogue. Then select the three probes keeping pressed the CTRL key, and then press the CRTL+T, or press Add Traces, for adding the three probes as Traces. Then press the SPACE key for showing the plot.