A Multiway Bidirectional Multiport-Ac-Coupled (MAC) Battery Balancer with Online Electrochemical Impedance Spectroscopy

Youssef Elasser, Yenan Chen, Ming Liu, Minjie Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Battery management systems (BMS) are key to various applications ranging from electric vehicles to grid-tied energy storage systems. Active battery balancers are needed for BMS in order to extend the battery lifetime and maintain high system performance. This paper presents a multiway bidirectional multiport-ac-coupled (MAC) battery balancer architecture based on a multi-active-bridge (MAB) converter. The operation, modeling, and power flow control of the MAC converter are detailed and analyzed. Magnetic models are used to further examine the multi-input multi-output (MIMO) power flow in the multi-winding transformer which couples all ports together. The converter is able to perform active battery balancing as well as online diagnostics through built-in electrochemical impedance spectroscopy (EIS). A 12-port MAC battery balancer was built and tested to verify the functionality and effectiveness of the proposed approach.

Original languageEnglish (US)
Title of host publicationAPEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1475-1482
Number of pages8
ISBN (Electronic)9781728148298
DOIs
StatePublished - Mar 2020
Event35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, United States
Duration: Mar 15 2020Mar 19 2020

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2020-March

Conference

Conference35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
CountryUnited States
CityNew Orleans
Period3/15/203/19/20

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • battery balancer
  • electro-chemical impedance spectroscopy
  • multiport converter
  • multiport-ac-coupled

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  • Cite this

    Elasser, Y., Chen, Y., Liu, M., & Chen, M. (2020). A Multiway Bidirectional Multiport-Ac-Coupled (MAC) Battery Balancer with Online Electrochemical Impedance Spectroscopy. In APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition (pp. 1475-1482). [9124422] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2020-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC39645.2020.9124422