Consider three ideal single-phase transformers (with a
Chapter , Problem 3.29(choose chapter or problem)
Consider three ideal single-phase transformers (with a voltage gain of h) put together as a delta wye three-phase bank as shown in Figure 3.35. Assuming positive-sequence voltages for Van, Vbn, and Vcn, find Va0n0 , Vb0n0 , and Vc 0n0 in terms of Van, Vbn, and Vcn, respectively. (a) Would such relationships hold for the line voltages as well? (b) Looking into the current relationships, express I 0 a, I 0 b, and I 0 c in terms of Ia, Ib, and Ic, respectively. (c) Let S0 and S be the per-phase complex power output and input, respectively. Find S0 in terms of S.
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