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Automcdonough · 09-07-2010, 06:05 PM

If you convert to power (watts) then yes to muliply by 3, then convert back to V*A. This is important because what's going to each leg will be RMS values, and the input is a DC bus.

so a straight simplistic 60Hz conversion for 360VDC 100A: 36kW input
/3=12kW
12kW / (360V*.707) = 47A RMS per leg (67A peak)

Of course this will change based on frequency, efficiency, waveform shape, etc.. but a good enough ballpark to pick out parts.

09-07-2010, 06:05 PM	#311 (permalink)
Automcdonough EcoModding Lurker Join Date: Jul 2010 Location: Cleveland, OH Posts: 89 Thanks: 5 Thanked 7 Times in 5 Posts	If you convert to power (watts) then yes to muliply by 3, then convert back to VA. This is important because what's going to each leg will be RMS values, and the input is a DC bus. so a straight simplistic 60Hz conversion for 360VDC 100A: 36kW input /3=12kW 12kW / (360V.707) = 47A RMS per leg (67A peak) Of course this will change based on frequency, efficiency, waveform shape, etc.. but a good enough ballpark to pick out parts.