Experimental Harmonics Analysis of UPS (Uninterrupted Power Supply) System and Mitigation Using Single-Phase Half-Bridge HAPF (Hybrid Active Power Filter) Based on Novel Fuzzy Logic Current Controller (FLCC) for Reference Current Extraction (RCE)

Table 2

Fuzzy control rules.

∆e e	Small	Zero	Large
Very low	Very increase	Very increase	Very increase
Low	Very increase	Increase	Increase
Zero	Increase	Constant	Decrease
High	Decrease	Decrease	Very decrease
Very high	Very decrease	Very decrease	Very decrease