Fig. 18

Spectrum harmonic of first phase grid side current when the grid voltage frequency is set to 49.5 Hz: (a) PI controllers, (b) Traditional ESO-based ADRC method in46, (c) proposed FOADRC.

Spectrum harmonic of first phase grid side current when the grid voltage frequency is set to 49.5 Hz: (a) PI controllers, (b) Traditional ESO-based ADRC method in46, (c) proposed FOADRC.