Fig. 16

Experimental results under a 20% voltage sag. CH1, CH2, and CH3 the proposed PLL, mEPLL, and modified SOGI-PLL, respectively. a Estimated phase error and b estimated grid frequency
Experimental results under a 20% voltage sag. CH1, CH2, and CH3 the proposed PLL, mEPLL, and modified SOGI-PLL, respectively. a Estimated phase error and b estimated grid frequency