AC Battery: Modular Layout and Cyber-secure Cell-level Control for Cost-Effective Transportation Electrification

Claudio Burgos-Mellado, Felipe Donoso, Tomislav Dragicevic

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper proposes a three-phase AC battery based on the modular multilevel converter (MMC) and investigates the effects of cyber attacks on it. The AC battery concept allows plug and play combinatorial integration of diverse battery cells with different characteristics such as nominal voltage, state of charge (SoC), state of health (SoH), and capacity into modular and reconfigurable battery packs that can cost-effectively cover a broad range of applications from electrified vehicles to stationary storage. To this end, in each sub-module (SM) of the MMC, battery cells (or modules) are connected to its capacitor, enabling a cell-to-cell control. In this scenario, the traditional battery management system (BMS) can be replaced by control schemes for the converter aiming to equalise critical parameters associated with battery cells. Unlike previous works, the proposed battery concept considers a local controllers (LC) in each SM of the MMC, achieving a modularisation in computing capacity for the MMC control system. Under this framework, a distributed control scheme based on the consensus theory is proposed for SoC regulation among the battery cells. Also, it is shown that cyber attacks are real threats to this electrical system. In particular, this work studies the effects of the specific cyber attack named false data injection attack (FDIA) on the proposed distributed control scheme for SoC regulation.

Original languageEnglish
Title of host publicationProceedings of 2022 IEEE Transportation Electrification Conference and Expo
PublisherIEEE
Publication date2022
Pages1163-1167
ISBN (Electronic)9781665405607
DOIs
Publication statusPublished - 2022
Event2022 IEEE Transportation Electrification Conference and Expo - Westin Anaheim Resort, Anaheim, United States
Duration: 15 Jun 202217 Jun 2022
https://itec-conf.com/

Conference

Conference2022 IEEE Transportation Electrification Conference and Expo
LocationWestin Anaheim Resort
Country/TerritoryUnited States
CityAnaheim
Period15/06/202217/06/2022
Internet address

Keywords

  • AC battery
  • Consensus algorithm
  • Modular multilevel converter
  • Second-life batteries integration

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