Automatic Gain Adjustment for Shunt Active Power Filter Based on THD Control

What is it about?

In this paper, an automatic gain adjustment for active filter is designed based on keeping and controlling of total harmonic distortion in the allowable limitation according to IEEE-519 Std. Other features and benefits of using automatic gain adjustment are reduction of compensating current and hence losses reduction that these two results in reduction of the cost of active power filter.

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Why is it important?

because of the uncertain and variable nature of characteristic impedance, ZC , It is necessary to use active power filter with automatic gain adjustment in order to damp harmonic propagation phenomenon.