A cascaded converter using hybrid cells and H-bridge structure

Satya Subrahmanya Ajay Dangeti (Aditya Engineering College)
Chaitanya Kishore Patnaik Sekharamantry (Aditya Engineering College)
Venkata Kowshik Bayanti (Aditya Engineering College)
B. A. Raju Ch (Aditya Engineering College)
KVS Ramachandra Murthy (Aditya Engineering College)
Abhilash Tirupathi (CL Educate Ltd.)

Bulletin of Electrical Engineering and Informatics
Vol 10, No 6: December 2021

This paper introduces a cascaded converter structure using hybrid two-level cells to form a single-phase seven-level inverter. Compared to various conventional and existing multilevel (MLI) topologies, this topology requires a lower number of devices. It uses several DC sources integrated in two-stage cells to provide the required voltage. In this topology, the DC-link condensers are not necessary. The modes of operation and modulation of the structure proposed are described in depth. Finally, in the MATLAB/Simulink platform the new topology is evaluated and the results reported.