Instantaneous Power Theory with Fourier and Optimal Predictive Controller Design for Shunt Active Power Filter

Table 3

The performance comparison between the PQ and PQF algorithms for unbalanced system.

Harmonic; identification; algorithm	%THD𝑖,𝑎	%THD𝑖,𝑏	%THD𝑖,𝑐	%THD𝑖,𝑎𝑣	𝑖𝑠𝑎; (rms)	𝑖𝑠𝑏; (rms)	𝑖𝑠𝑐; (rms)	%unbalance
Before compensation
	42.84	32.75	8.51	31.52	1.46	1.61	1.92	15.43
After compensation
PQ	0.62	0.49	0.68	0.60	1.55	1.56	1.55	0.43
PQF	0.01	0.01	0.01	0.01	1.55	1.55	1.55	0