A New 7-Level Symmetric Multilevel Inverter with Minimum Number of Switches

Table 5

THD content.

PWM technique	Symmetric conventional cascaded; 7-level mli (%)	Asymmetric conventional cascaded; 7-level mli (%)	7-level,; 9 switches (%)	7-level,; 7 switches (%)	7-level,; 6 switches (%)	Proposed 5-switch; 7-level mli (%)
PD	24.26	21.84	—	—	18.08	18.07
POD	23.13	20.22	28.3	14	16.15	16.12
APOD	22.46	19.42	—	—	18.52	18.40