A combined optimal sizing and energy management approach for hybrid in-wheel motors of EVs

Yi Hsuan Hung, Chien Hsun Wu

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

In-wheel motors (IWMs) substantially influence the output performance of electric vehicles (EVs). Size design and control issues are two critical factors to be explored. This paper proposes the use of hybridization for integrating dual motors to enhance EV system dynamics. A combined optimal sizing/control approach was developed using the global search method (GSM). The optimal control (torque ratio) of dual motors was first proposed using the nested-structure for-loop program to minimize the consumed power according to various power ratios. The next combined sizing/control developed using the GSM facilitated the search for the optimal control, power ratios, and T-. N (Torque-Speed) ratios to minimize the accumulated energy consumed during ECE40 and UDDS driving cycles. The results from simulations of these two cycles indicated that the energy consumption during optimal control improved by 1.23% and 1.40%, 8.34% and 7.16% after optimal sizing, and the combined optimization improved total consumed energy by 15.31% and 15.16%, respectively. These results suggest that employing the novel hybrid IWM powertrains while using the combined sizing/control method can facilitate energy conservation. A real testing platform will be developed in the future.

Original languageEnglish
Pages (from-to)260-271
Number of pages12
JournalApplied Energy
Volume139
DOIs
Publication statusPublished - 2015 Feb 1

Fingerprint

electric vehicle
Energy management
Electric vehicles
Wheels
torque
energy conservation
Powertrains
Torque control
energy
Power control
Energy conservation
Dynamical systems
Energy utilization
Torque
energy management
sizing
simulation
method
Testing

Keywords

  • Electric vehicle
  • Energy management
  • In-wheel motor (IWM)
  • Optimization
  • System design

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

A combined optimal sizing and energy management approach for hybrid in-wheel motors of EVs. / Hung, Yi Hsuan; Wu, Chien Hsun.

In: Applied Energy, Vol. 139, 01.02.2015, p. 260-271.

Research output: Contribution to journalArticle

@article{2ac21b4049ec4e70b63679821a07fdeb,
title = "A combined optimal sizing and energy management approach for hybrid in-wheel motors of EVs",
abstract = "In-wheel motors (IWMs) substantially influence the output performance of electric vehicles (EVs). Size design and control issues are two critical factors to be explored. This paper proposes the use of hybridization for integrating dual motors to enhance EV system dynamics. A combined optimal sizing/control approach was developed using the global search method (GSM). The optimal control (torque ratio) of dual motors was first proposed using the nested-structure for-loop program to minimize the consumed power according to various power ratios. The next combined sizing/control developed using the GSM facilitated the search for the optimal control, power ratios, and T-. N (Torque-Speed) ratios to minimize the accumulated energy consumed during ECE40 and UDDS driving cycles. The results from simulations of these two cycles indicated that the energy consumption during optimal control improved by 1.23{\%} and 1.40{\%}, 8.34{\%} and 7.16{\%} after optimal sizing, and the combined optimization improved total consumed energy by 15.31{\%} and 15.16{\%}, respectively. These results suggest that employing the novel hybrid IWM powertrains while using the combined sizing/control method can facilitate energy conservation. A real testing platform will be developed in the future.",
keywords = "Electric vehicle, Energy management, In-wheel motor (IWM), Optimization, System design",
author = "Hung, {Yi Hsuan} and Wu, {Chien Hsun}",
year = "2015",
month = "2",
day = "1",
doi = "10.1016/j.apenergy.2014.11.028",
language = "English",
volume = "139",
pages = "260--271",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - A combined optimal sizing and energy management approach for hybrid in-wheel motors of EVs

AU - Hung, Yi Hsuan

AU - Wu, Chien Hsun

PY - 2015/2/1

Y1 - 2015/2/1

N2 - In-wheel motors (IWMs) substantially influence the output performance of electric vehicles (EVs). Size design and control issues are two critical factors to be explored. This paper proposes the use of hybridization for integrating dual motors to enhance EV system dynamics. A combined optimal sizing/control approach was developed using the global search method (GSM). The optimal control (torque ratio) of dual motors was first proposed using the nested-structure for-loop program to minimize the consumed power according to various power ratios. The next combined sizing/control developed using the GSM facilitated the search for the optimal control, power ratios, and T-. N (Torque-Speed) ratios to minimize the accumulated energy consumed during ECE40 and UDDS driving cycles. The results from simulations of these two cycles indicated that the energy consumption during optimal control improved by 1.23% and 1.40%, 8.34% and 7.16% after optimal sizing, and the combined optimization improved total consumed energy by 15.31% and 15.16%, respectively. These results suggest that employing the novel hybrid IWM powertrains while using the combined sizing/control method can facilitate energy conservation. A real testing platform will be developed in the future.

AB - In-wheel motors (IWMs) substantially influence the output performance of electric vehicles (EVs). Size design and control issues are two critical factors to be explored. This paper proposes the use of hybridization for integrating dual motors to enhance EV system dynamics. A combined optimal sizing/control approach was developed using the global search method (GSM). The optimal control (torque ratio) of dual motors was first proposed using the nested-structure for-loop program to minimize the consumed power according to various power ratios. The next combined sizing/control developed using the GSM facilitated the search for the optimal control, power ratios, and T-. N (Torque-Speed) ratios to minimize the accumulated energy consumed during ECE40 and UDDS driving cycles. The results from simulations of these two cycles indicated that the energy consumption during optimal control improved by 1.23% and 1.40%, 8.34% and 7.16% after optimal sizing, and the combined optimization improved total consumed energy by 15.31% and 15.16%, respectively. These results suggest that employing the novel hybrid IWM powertrains while using the combined sizing/control method can facilitate energy conservation. A real testing platform will be developed in the future.

KW - Electric vehicle

KW - Energy management

KW - In-wheel motor (IWM)

KW - Optimization

KW - System design

UR - http://www.scopus.com/inward/record.url?scp=84916600623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84916600623&partnerID=8YFLogxK

U2 - 10.1016/j.apenergy.2014.11.028

DO - 10.1016/j.apenergy.2014.11.028

M3 - Article

AN - SCOPUS:84916600623

VL - 139

SP - 260

EP - 271

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

ER -