Harmonics effects on wye-wye transformers

In summary, harmonics are voltage and current signals that are multiples of the fundamental frequency in an electrical system. In wye-wye transformers, they can cause increased heating and stress on the transformer windings, leading to reduced efficiency and possibly even failure. The sources of harmonics in wye-wye transformer systems include non-linear loads such as computers, variable frequency drives, and LED lighting. These devices draw non-sinusoidal currents, which can create harmonics in the electrical system. To mitigate harmonics, harmonic filters can be used to absorb the harmonics, and transformers with lower impedance can be used to better handle the harmonic currents. The effects of harmonics on wye-wye transformers include increased heating and stress on the transformer wind
  • #1
GunnarDH
1
0
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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