Efficiency Improvement of Three-Phase Cascaded H-Bridge Multilevel Inverters for Photovoltaic Systems

Table 2

Comparison of the results.

	w/o third-harmonic injection	w/third-harmonic injection	% of change
Grid current peak amplitude	19.2 A	19.7 A	+2.6%
dc-link voltage ripple amplitude	8.2	5.6	%
PV panel power ripple amplitude	25.7	13.6	%
PV panel power at MPP	249 W	249 W
PV panel average output power	238 W	244.3 W	+2.6%
Output power of the system	2,856 W	2,932 W	+2.6%