Sources, Effects, and Modelling of Interharmonics

Table 1

Result comparison between DFT and LEA.

Real values	Δ𝑓
	Δ𝑓 = 1 Hz		Δ𝑓 = 5 Hz		Δ𝑓 = 10 Hz
	DFT	LEA	DFT	LEA	DFT	LEA
𝑓1 = 49.6 (Hz)	49	49.6	45	49.5	40	49.5
𝑎1 = 1.0	1.0	1.01	0.99	1.00	1.0	1.02
𝑓2 = 123 (Hz)	123	123	120	123	120	123
𝑎2 = 0.3	0.3	0.3	0.22	0.29	0.26	0.29
𝑓3 = 327 (Hz)	327	327	325	327	320	327
𝑎3 = 0.15	0.15	0.15	0.076	0.146	0.13	0.148