Novel Symmetric Modular Hybrid Multilevel Inverter With Reduced Number of Semiconductors and Low-Voltage Stress Across Switches

Optimal design of a cascaded rectangular‐type and circle‐type multilevel inverters with a new switching technique

“…Another limitation that affects MLIs on the basis of cost and complexity is the number of dc sources. In this scenario, the presented structure shows a unique behaviour compared to other topologies of [100–110] as conferred in Fig. 10 c .…”

“…Fig. 10 a concludes that the number of switches presented in [100, 103, 104] is less compared to the proposed topology; up to 75 number of levels. Similarly, the structure of [102] has a smaller number of power switches; up to 170 voltage levels.…”

“…Fig. 10 b explains that increasing the number of levels ultimately increases gate driver circuits of [100, 101, 103, 105–110]. However, the structures of [100, 104] show the unique behaviour of a smaller number of gate driver circuits than the presented topology for the levels <150.…”

“…The basic unit of the presented topology is compared with other topologies presented in [100–110] on the basis of the number of power switches, gate driver circuits, and dc voltage sources with respect to the number of output voltage levels demonstrated in Figs. 10 a – c , respectively.…”

“…Similarly, the structure of [102] has a smaller number of power switches; up to 170 voltage levels. However, all the topologies of [100–110] have the drawback of large numbers of switches for greater numbers of levels. In conclusion, the proposed topology is suitable for a greater number of levels.…”