Parameter Extraction of Solar Photovoltaic Modules Using Gravitational Search Algorithm

Table 2

Comparison of optimization results of GA and GSA at different irradiation levels for Shell ST40.

Parameters	Irradiation in Watt/m^2
	200		400		600		800		1000
	GA	GSA	GA	GSA	GA	GSA	GA	GSA	GA	GSA
()	0.957967	0.940371	0.995112	0.983382	0.995112	0.995112	0.981427	0.981427	0.991202	0.999
()	480.9384	200	291.3001	200	295.2102	200	420.3324	200	333.33	200
	1.480938	1.492669	1.2	1.404692	1.2	1.4604	1.2317	1.486804	1.2	1.4956
	1	1	1	1	1	1	1	1	1	1
(nA)	52.0	57.2	1.10	22.4	1.05	1.05	1.77	68.6	0.996	72.8
(nA)	0.022	0.022	0.0175	0.0175	0.0153	0.0153	0.0139	0.0134	0.0129	0.0129
(A)	0.536	0.536	1.072	1.072	1.608	1.608	2.144	2.144	2.68	2.68