Adaptive control of hybrid battery energy storage systems under capacity fade

Nilanjan Mukherjee*, Dani Strickland, Mina Abedi Varnosfaderani

*Corresponding author for this work

Research output: Chapter in Book/Published conference outputConference publication

Abstract

There is an increasing call for applications which use a mixture of batteries. These hybrid battery solutions may contain different battery types for example; using second life ex-transportation batteries in grid support applications or a combination of high power, low energy and low power, high energy batteries to meet multiple energy requirements or even the same battery types but under different states of health for example, being able to hot swap out a battery when it has failed in an application without changing all the batteries and ending up with batteries with different performances, capacities and impedances. These types of applications typically use multi-modular converters to allow hot swapping to take place without affecting the overall performance of the system. A key element of the control is how the different battery performance characteristics may be taken into account and the how the power is then shared among the different batteries in line with their performance. This paper proposes a control strategy which allows the power in the batteries to be effectively distributed even under capacity fade conditions using adaptive power sharing strategy. This strategy is then validated against a system of three different battery types connected to a multi-modular converter both with and without capacity fade mechanisms in place.

Original languageEnglish
Title of host publication2014 16th European conference on Power Electronics and Applications, EPE'14-ECCE Europe
PublisherIEEE
Number of pages10
ISBN (Print)978-1-4799-3015-9
DOIs
Publication statusPublished - 2014
Event16th European conference on Power Electronics and Applications - Lappeenranta, Finland
Duration: 26 Aug 201428 Aug 2014

Conference

Conference16th European conference on Power Electronics and Applications
Abbreviated titleEPE'14-ECCE Europe
CountryFinland
CityLappeenranta
Period26/08/1428/08/14

Bibliographical note

© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Funding: EPSRC (EP/1008764/1)

Keywords

  • adaptive control
  • batteries
  • converter control
  • energy storage
  • hybrid power integration

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