Abstract
This paper presents a new multilevel converter with a reduced number of power components for medium voltage applications. Both symmetric and asymmetric structures of the presented multilevel converter are proposed. The symmetric topology requires equal dc source values, whereas the asymmetric topology uses minimum switch count. However, both structures suffer from high blocking voltage across the switches. To reduce the blocking voltage on switches, an optimal topology is presented and analyzed for the selection of the minimum number of switches and dc sources, while maintaining a low blocking voltage across the switches. A comparative analysis with recently published topologies was performed. The simulation results, as well as the comparative analysis, validated the robustness and effectiveness of the proposed topology in terms of the reduced power loss, lowered number of components, and cost. Furthermore, in addition to the simulation results, the performance of the proposed topology was verified using experimental results of 9, 17, and 25 levels.
Highlights
In recent years, utilization of multilevel inverters (MLIs) has increased in different applications such as renewable energy systems, utility interfacing schemes, automotive applications, and adjustable speed drives
The CHB-MLI topology can be configured in both symmetric and asymmetric configurations
A new cascaded diode half-bridge multilevel inverter topology is presented in symA new cascaded diode half-bridge multilevel inverter topology is presented in symmetric, asymmetric, and cascaded structures
Summary
Jagabar Sathik 1,2 , Shady H. E. Abdel Aleem 3 , Rasoul Shalchi Alishah 4, * , Dhafer Almakhles 1 , Kent Bertilsson 4 , Mahajan Sagar Bhaskar 1 , George Fernandez Savier 2 and Karthikeyan Dhandapani 2 Citation: Sathik, J.; Aleem, S.H.E.A.; Shalchi Alishah, R.; Almakhles, D.; Bertilsson, K.; Bhaskar, M.S.; Fernandez Savier, G.; Dhandapani, K.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have