An Improved Fuzzy Logic Controller Design for PV Inverters Utilizing Differential Search Optimization

Table 1

Fuzzy control rules based on seven MF.

Error ()	Change of error (CE)
	MFCE1	MFCE2	MFCE3	MFCE4	MFCE5	MFCE6	MFCE7
MFE1	NB	NB	NB	NB	NM	NS	ZO
MFE2	NB	NB	NB	NM	NS	ZO	PS
MFE3	NB	NB	NM	NS	ZO	PS	PM
MFE4	NB	NM	NS	ZO	PS	PM	PB
MFE5	NM	NS	ZO	PS	PM	PB	PB
MFE6	NS	ZO	PS	PM	PB	PB	PB
MFE7	ZO	PS	PM	PB	PB	PB	PB

NB = negative Big, NM = negative medium, NS = negative small, ZO = zero, PS = positive small, PM = positive medium, and PB = positive big.