Harmonics effects on wye-wye transformers

AI Thread Summary
Harmonics significantly affect wye-wye transformers, particularly when the neutral is grounded, as this can lead to increased distortion and circulating currents. In contrast, a non-grounded neutral may reduce distortion on the wye side but can still result in harmonic issues. Wye-delta configurations experience less voltage distortion on the delta side due to the delta's ability to cancel out certain harmonic currents. The grounding of the neutral impacts how harmonics circulate and interact within the system, influencing overall performance. Understanding these dynamics is crucial for optimizing transformer operation and mitigating distortion effects.
GunnarDH
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What effect do harmonics have on wye-wye transformers with neutral grounded? What about not grounded? Also, in a wye-delta, why is there less distortion in the delta side voltage if neutral in the wye side is not connected to ground?
I understand why the Y transformers have distortion and the delta do not. But I don't understand why have a ground would effect either situation.
 
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