Confused on intermediate steps of proof using park transformation

Thread Starter

hayjoss

Joined Mar 2, 2014
1
I'm trying to figure out the steps in between (6) and (7) of the following, but am totally and completely lost, any help much appreciated:




I'm trying to essentially prove the V_rms using the Park transformation. I also don't think there's a sqrt(2) at the bottom, I believe it should only be sqrt(3).
 
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