An Improved P&O Based MPPT for PV Systems with Reduced Steady-State Oscillation

Table 1

The simulation comparison of algorithms.

Type	Step					Slope		Total
Param	Tracking time (MS), oscillation (W), tracked power (W)					Deviation max (W)		Efficiency (%)
Period	a	b	c	d	e	f	g
Conv P&O	300	350	340	20	260	21.5	37.5	95.05
	2.7	4.2	2.6	4.2	2.7
	127	211	128	211	128
Conv INC	300	350	320	20	240	21.5	37.5	95.08
	2.7	3.2	2.7	3.2	2.7
	127	212	1.28	212	128
VSS P&O	300	200	220	320	140	16.5	16.6	97.88
	1.4	2	1.5	2.1	1.4
	128	212	129	212	129
ASS INC	200	100	80	220	100	24	17.5	97.56
	1.3	25	2.2	2.5	6
	129	200	129	212	129
Optimized P&O	285	280	330	125	130	12	13.5	97.90
	0	0	0	0	0
	129	208	129	207	128
Modified P&O	280	280	320	120	120	10	11	98.23
	0	0	0	0	0
	129	211	129	211	128
Proposed P&O	240	260	240	120	60	9	9	98.54
	0	0	0	0	0
	129	213	129	213	200