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RE: Three phase conversion In Rush current Concern.



Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 11:26 AM 9/30/2006, Tesla list wrote:
Original poster: "Leigh Copp" <Leigh.Copp@xxxxxxxxxxx>

Hi Jim

If and when you add the generator to your converter, the output will be about as perfect as perfect can be, and this problem will be a thing of the past.

Regardless of how balanced your three phase ends up however, of course we know that power in is going to be somehwat more than power out, because even state of the art rotary converters (M-G sets) are less than 85% efficient. (A good drive will beat this without any moving parts BTW).


But a good solid state drive (while efficient) won't do as a good a job turning single phase into 3 phase (in terms of ripple) because the MG set essentially is using mechanical inertia as the low pass filter/energy storage medium in the "DC link" (the DC just happens to be unidirectional mechanical motion here).