Initial Evaluation of a Multilevel Inverter with Unfolding Stage for BESS Applications

2021 IEEE 9th Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE 2021): Proceedings 2021
Aleksandrs Bubovičs, Maksims Vorobjovs, Andreas Giannakis

Today, the integration of renewable energy sources into power grids has increased significantly. This necessitates the development of more battery energy storage systems. A crucial component in such systems is the power electronic converters, which ensure the proper connection of the batteries to the grid. These bidirectional converters should be able not only to discharge batteries to the grid, but also to charge the batteries when it is needed. Various power converters can be identified for these systems. In particular, multilevel topologies offer several advantages, such as lower harmonic distortion of the output waveforms and lower switching losses. Among all multilevel converter topologies, the multilevel converter with independent sources provides one more benefit - battery balancing is achieved naturally by swapping the module switching order. This paper evaluates the performance of a modular multilevel converter with independent sources and unfolding stage.

Keywords
batteries | DC-AC converters | energy storage | multilevel converters | performance evaluation
DOI
10.1109/AIEEE54188.2021.9670386
Hyperlink
https://ieeexplore.ieee.org/document/9670386

Bubovičs, A., Vorobjovs, M., Giannakis, A. Initial Evaluation of a Multilevel Inverter with Unfolding Stage for BESS Applications. In: 2021 IEEE 9th Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE 2021): Proceedings, Latvia, Rīga, 25-26 November, 2021. Piscataway: IEEE, 2021, pp.77-80. ISBN 978-1-6654-6713-1. e-ISBN 978-1-6654-6712-4. ISSN 2689-7334. e-ISSN 2689-7342. Available from: doi:10.1109/AIEEE54188.2021.9670386

Publication language
English (en)