Evaluation of Harmonic Content from a Tap Transformer Based Grid Connection System for Wind Power
Figure 8
Results from the experiments for all three taps on the tap transformer (a) THD (b) TDD. The vertical lines in the two figures correspond to one-third and two-thirds of the nominal power from the turbine. We can see an improvement in THD as we go up in power and an improvement in both THD and TDD as we go up in tap.
