Design Balancing Systems for Supercapacitors Based on Their Stochastic Model

Federico Martin Ibanez, Ildar Idrisov, Fernando Martin, Alejandro Rujas

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This article analyzes a stochastic supercapacitor model and uses the model to estimate the losses for different balancing methods. In addition, it proposes guidelines for designing a supercapacitor bank that includes balancing networks. Supercapacitors (SCs) can be used as the main part of an energy storage system (ESS) that transfers high power to a DC or AC grid. This is needed in grids with a high penetration of renewable energies in order to balance generation and consumption. The design method is based on a supercapacitor model which uses stochastic variables: capacitance, series resistance and self-discharge current. As the balancing network affects the overall efficiency of the SC bank, dissipative and non-dissipative balancing networks are studied. Then different strategies are compared taking into account the complexity, cost and efficiency of the balancing network in the bank.

Original languageEnglish
Article number8964269
Pages (from-to)733-745
Number of pages13
JournalIEEE Transactions on Energy Conversion
Volume35
Issue number2
DOIs
Publication statusPublished - Jun 2020

Keywords

  • non-dissipative balancing systems
  • sizing
  • storage system
  • Supercapacitor

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