Title: Multilevel converter topology suitable for separate and variable magnitude of DC sources

Authors: Bikram Das; Debashis Chatterjee; Aniruddha Bhattacharya

Addresses: Department of Electrical Engineering, NIT Agartala, Jirania, Barjala, Tripura West-799046, India ' Department of Electrical Engineering, Jadavpur University, Kolkata, West Bengal-700032, India ' Department of Electrical Engineering, NIT Durgapur, Kolkata, West Bengal-713209, India

Abstract: A new configuration of multilevel inverter (MLI) has been presented in this paper requiring fewer power semiconductor switches and driver circuits. The proposed topology has better switch utilisation ratio (SUR) with reduction in inverter price. The circuit functional performance of MLI is validated through suitable simulation and experimental results on a laboratory prototype. The MLI has been considered for 5, 11 and 13-level configurations with different resistive and inductive load combinations. Both equal and unequal dc sources are considered to justify the feasibility of the topology.

Keywords: multilevel inverter; MLI; cascaded configuration; loss calculation; switch utilisation.

DOI: 10.1504/IJPELEC.2022.121409

International Journal of Power Electronics, 2022 Vol.15 No.2, pp.194 - 215

Received: 03 Oct 2019
Accepted: 24 Jan 2020
Published online: 11 Mar 2022 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article