Charge equalization controller algorithm for series-connected lithium-ion battery storage systems

Modeling and applications

Hannan M A, Mohammad M. Hoque, Pin J. Ker, Rawshan Ara Begum, Azah Mohamed

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study aims to develop an accurate model of a charge equalization controller (CEC) that manages individual cell monitoring and equalizing by charging and discharging series-connected lithium-ion (Li-ion) battery cells. In this concept, an intelligent control algorithm is developed to activate bidirectional cell switches and control direct current (DC)-DC converter switches along with pulse width modulation (PWM) generation. Individual models of an electric vehicle (EV)-sustainable Li-ion battery, optimal power rating, a bidirectional flyback DC-DC converter, and charging and discharging controllers are integrated to develop a small-scale CEC model that can be implemented for 10 series-connected Li-ion battery cells. Results show that the charge equalization controller operates at 91% efficiency and performs well in equalizing both overdischarged and overcharged cells on time. Moreover, the outputs of the CEC model show that the desired balancing level occurs at 2% of state of charge difference and that all cells are operated within a normal range. The configuration, execution, control, power loss, cost, size, and efficiency of the developed CEC model are compared with those of existing controllers. The proposed model is proven suitable for high-tech storage systems toward the advancement of sustainable EV technologies and renewable source of applications.

Original languageEnglish
Article number1390
JournalEnergies
Volume10
Issue number9
DOIs
Publication statusPublished - 2017

Fingerprint

Lithium-ion Battery
Equalization
Storage System
System Modeling
Charge
Controller
Controllers
Series
Cell
Electric Vehicle
Electric vehicles
Converter
Switch
Switches
Model
Intelligent Control
Intelligent control
Power Control
Lithium-ion batteries
Power control

Keywords

  • Charge equalization controller
  • Control algorithm
  • Lithium-ion battery
  • Modeling
  • State of charge
  • Sustainable energies

ASJC Scopus subject areas

  • Computer Science(all)
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)

Cite this

Charge equalization controller algorithm for series-connected lithium-ion battery storage systems : Modeling and applications. / M A, Hannan; Hoque, Mohammad M.; Ker, Pin J.; Begum, Rawshan Ara; Mohamed, Azah.

In: Energies, Vol. 10, No. 9, 1390, 2017.

Research output: Contribution to journalArticle

@article{88e89419db4144dca1d4467fe1b830d5,
title = "Charge equalization controller algorithm for series-connected lithium-ion battery storage systems: Modeling and applications",
abstract = "This study aims to develop an accurate model of a charge equalization controller (CEC) that manages individual cell monitoring and equalizing by charging and discharging series-connected lithium-ion (Li-ion) battery cells. In this concept, an intelligent control algorithm is developed to activate bidirectional cell switches and control direct current (DC)-DC converter switches along with pulse width modulation (PWM) generation. Individual models of an electric vehicle (EV)-sustainable Li-ion battery, optimal power rating, a bidirectional flyback DC-DC converter, and charging and discharging controllers are integrated to develop a small-scale CEC model that can be implemented for 10 series-connected Li-ion battery cells. Results show that the charge equalization controller operates at 91{\%} efficiency and performs well in equalizing both overdischarged and overcharged cells on time. Moreover, the outputs of the CEC model show that the desired balancing level occurs at 2{\%} of state of charge difference and that all cells are operated within a normal range. The configuration, execution, control, power loss, cost, size, and efficiency of the developed CEC model are compared with those of existing controllers. The proposed model is proven suitable for high-tech storage systems toward the advancement of sustainable EV technologies and renewable source of applications.",
keywords = "Charge equalization controller, Control algorithm, Lithium-ion battery, Modeling, State of charge, Sustainable energies",
author = "{M A}, Hannan and Hoque, {Mohammad M.} and Ker, {Pin J.} and Begum, {Rawshan Ara} and Azah Mohamed",
year = "2017",
doi = "10.3390/en10091390",
language = "English",
volume = "10",
journal = "Energies",
issn = "1996-1073",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "9",

}

TY - JOUR

T1 - Charge equalization controller algorithm for series-connected lithium-ion battery storage systems

T2 - Modeling and applications

AU - M A, Hannan

AU - Hoque, Mohammad M.

AU - Ker, Pin J.

AU - Begum, Rawshan Ara

AU - Mohamed, Azah

PY - 2017

Y1 - 2017

N2 - This study aims to develop an accurate model of a charge equalization controller (CEC) that manages individual cell monitoring and equalizing by charging and discharging series-connected lithium-ion (Li-ion) battery cells. In this concept, an intelligent control algorithm is developed to activate bidirectional cell switches and control direct current (DC)-DC converter switches along with pulse width modulation (PWM) generation. Individual models of an electric vehicle (EV)-sustainable Li-ion battery, optimal power rating, a bidirectional flyback DC-DC converter, and charging and discharging controllers are integrated to develop a small-scale CEC model that can be implemented for 10 series-connected Li-ion battery cells. Results show that the charge equalization controller operates at 91% efficiency and performs well in equalizing both overdischarged and overcharged cells on time. Moreover, the outputs of the CEC model show that the desired balancing level occurs at 2% of state of charge difference and that all cells are operated within a normal range. The configuration, execution, control, power loss, cost, size, and efficiency of the developed CEC model are compared with those of existing controllers. The proposed model is proven suitable for high-tech storage systems toward the advancement of sustainable EV technologies and renewable source of applications.

AB - This study aims to develop an accurate model of a charge equalization controller (CEC) that manages individual cell monitoring and equalizing by charging and discharging series-connected lithium-ion (Li-ion) battery cells. In this concept, an intelligent control algorithm is developed to activate bidirectional cell switches and control direct current (DC)-DC converter switches along with pulse width modulation (PWM) generation. Individual models of an electric vehicle (EV)-sustainable Li-ion battery, optimal power rating, a bidirectional flyback DC-DC converter, and charging and discharging controllers are integrated to develop a small-scale CEC model that can be implemented for 10 series-connected Li-ion battery cells. Results show that the charge equalization controller operates at 91% efficiency and performs well in equalizing both overdischarged and overcharged cells on time. Moreover, the outputs of the CEC model show that the desired balancing level occurs at 2% of state of charge difference and that all cells are operated within a normal range. The configuration, execution, control, power loss, cost, size, and efficiency of the developed CEC model are compared with those of existing controllers. The proposed model is proven suitable for high-tech storage systems toward the advancement of sustainable EV technologies and renewable source of applications.

KW - Charge equalization controller

KW - Control algorithm

KW - Lithium-ion battery

KW - Modeling

KW - State of charge

KW - Sustainable energies

UR - http://www.scopus.com/inward/record.url?scp=85032200650&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032200650&partnerID=8YFLogxK

U2 - 10.3390/en10091390

DO - 10.3390/en10091390

M3 - Article

VL - 10

JO - Energies

JF - Energies

SN - 1996-1073

IS - 9

M1 - 1390

ER -