Medium-Voltage Converter Solution with Modular Multilevel Structure and Decentralized Energy Storage Integration for High-Power Wind Turbines

Gustavo Gontijo, Tamas Kerekes, Dezso Sera, Mattia Ricco, Laszlo Mathe, Remus Teodorescu

Research output: Contribution to journalJournal articleResearchpeer-review

2 Citations (Scopus)

Abstract

As the penetration of renewable energy generation increases, the importance of energy storage systems becomes evident since these systems can contribute for the preservation of the power system stability. Wind turbine owners can also benefit from having energy storage systems as they can increase their revenues. The fast growth of wind turbine power ratings will eventually lead to the requirement of higher voltage levels as well. Proper power electronic converters will be required to drive these systems. Converters with a modular multilevel structure are considered the state-of-the-art solution for high-power applications. These topologies allow for a flexible integration of energy storage systems in both centralized and decentralized ways. This article presents a new converter solution with a modular multilevel structure and decentralized energy storage integration suitable to drive high-power medium-voltage wind turbines. This converter presents important structural and control characteristics that allows for a straightforward integration of an energy storage system in such a way that the wind turbine driven by it can operate with high flexibility and in a dispatchable fashion, benefiting both the power system operator and the wind-power-plant owner.

Original languageEnglish
Article number9423627
JournalIEEE Transactions on Power Electronics
Volume36
Issue number11
Pages (from-to)12954-12967
Number of pages14
ISSN0885-8993
DOIs
Publication statusPublished - Nov 2021

Keywords

  • Batteries
  • Energy storage
  • Medium voltage
  • Power system stability
  • Switches
  • Topology
  • Wind turbines
  • Energy storage systems (ESSs)
  • modular multilevel converters
  • wind turbines (WTs)

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