Hybrid Energy Storage System based on a Multi-Output Multilevel Converter

Ricardo Lizana, Sebastian Rivera, Fidel Figueroa, Freddy Flores-Bahamonde, Jose Rodriguez, Stefan M. Goetz

Research output: Contribution to journalArticlepeer-review


Energy Storage Systems (ESSs) allow improving the stability and efficiency of the electrical grids with a high penetration of renewable energy sources. Moreover, the use of Hybrid Energy Storage Systems (HESSs) enable storage solutions with both high-energy and high-power densities, by combining different storage technologies such as diverse battery chemistries, ultracapacitors, or hydrogen fuel cells to name a few. In this paper, an HESS-based Multi-Output Multilevel Converter is presented. The proposed topology enables decoupled control of each AC converter voltage outputs. The internal switching states further allow the use of different storage units and high-quality multilevel voltage in each AC outputs. The mathematical model of the proposed topology and the defined operation region of the system, besides a model-predictive control strategy are developed. Finally, simulation and experimental results validate the performance of the proposed topology.

Original languageEnglish
Pages (from-to)1
Number of pages1
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
StateAccepted/In press - 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:


  • Batteries
  • Energy storage
  • Energy Storage System
  • Modular Multilevel Series Parallel Converter
  • Multi-output Multilevel Converter
  • Multilevel converters
  • Power electronics
  • Switches
  • Topology
  • Voltage control


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