PLL Based Digital Adaptive Filter for Detecting Interharmonics

Table 4

Analysis results obtained with the area data.

𝑓 (Hz)	Interharmonic frequency (Hz)	FFT with correction (reference)	Error (%) (reference)	Proposed method	Error (%)
50.02	1457.5	1.309	0.000	1.319	0.7639
	1535	1.348	0.000	1.355	0.5192
	1635	1.445	0.000	1.444	0.0692
	1658	8.145	0.000	8.127	0.2209
	1758	7.938	0.000	7.925	0.1637
	1957.5	1.238	0.000	1.229	0.7269