Nine-Level Active Neutral Point Clamped Converter with Cascading H-bridges Fed by Flying Capacitors

2021 11th International Conference on Power and Energy Systems (ICPES 2021): Proceedings 2021
Aleksandrs Suzdaļenko, Khang Van Huynh, Jānis Zaķis, Viktorija Sribnija

A novel active neutral point clamped bidirectional multilevel inverter is proposed, consisting of flying capacitors with H-bridge interconnection circuit that allows for commutating any combination of flying capacitors and their polarity in the current path. The flying capacitor voltages are scaled by 1/2n factor to maximize the number of output voltage levels. Each intermediate output voltage pole has multiple possible combinations, where each flying capacitor can be charged or discharged, thus ensuring the simple capacitor voltage balancing capability within the same voltage pole. The simulation analysis demonstrated good performance and feasibility of the proposed topology for high power converters.

Keywords
AC/DC converter, multilevel converter, bidirectional power flow, PWM inverter
DOI
10.1109/ICPES53652.2021.9683987
Hyperlink
https://ieeexplore.ieee.org/document/9683987

Suzdaļenko, A., Van Huynh, K., Zaķis, J., Sribnija, V. Nine-Level Active Neutral Point Clamped Converter with Cascading H-bridges Fed by Flying Capacitors. In: 2021 11th International Conference on Power and Energy Systems (ICPES 2021): Proceedings, China, Shanghai, 18-20 December, 2021. Piscataway: IEEE, 2021, pp.42-46. ISBN 978-1-6654-1326-8. e-ISBN 978-1-6654-1325-1. ISSN 2767-7303. e-ISSN 2767-732X. Available from: doi:10.1109/ICPES53652.2021.9683987

Publication language
English (en)