A multi-control vehicle-to-grid charger with bi-directional active and reactive power capabilities for power grid support

Kang Miao Tan*, Sanjeevikumar Padmanaban, Jia Ying Yong, Vigna K. Ramachandaramurthy

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)

Abstract

This paper proposes a multi-control vehicle-to-grid charger with bi-directional power capability. The proposed charger can perform vehicle battery charging and discharging operations, as well as power grid support such as reactive power compensation, power factor correction, and grid voltage regulation. The performances of the charger controls were examined under various power grid scenarios. Results revealed that the vehicle-to-grid charger attained the highest charger efficiency when operating at unity power factor mode. Nevertheless, vehicle charging at unity power factor introduced a significant grid voltage drop which may violate the grid voltage limits. This problem was solved by using the voltage control, which injected reactive power to the power grid for accurate voltage regulation. This paper also proposed an autonomous multi-control selection algorithm to intelligently switch between the multiple charger controls in response to the power grid condition. Results showed that the proposed algorithm effectively instructed the charger to work in efficient control modes if the grid voltage was within the permissible voltage limits. Whenever the grid voltage exceeded the limits, the charger automatically switched to grid voltage control for power grid voltage regulation.
Original languageEnglish
JournalEnergy
Volume171
Pages (from-to)1150-1163
Number of pages14
ISSN0360-5442
DOIs
Publication statusPublished - Mar 2019

Fingerprint

Reactive power
Voltage control
Electric potential
Charging (batteries)
Switches

Keywords

  • AC-DC power converters
  • DC-DC power converters
  • Electric vehicles
  • Power conversion
  • Reactive power control
  • Voltage control

Cite this

Tan, Kang Miao ; Padmanaban, Sanjeevikumar ; Yong, Jia Ying ; Ramachandaramurthy, Vigna K. / A multi-control vehicle-to-grid charger with bi-directional active and reactive power capabilities for power grid support. In: Energy. 2019 ; Vol. 171. pp. 1150-1163.
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title = "A multi-control vehicle-to-grid charger with bi-directional active and reactive power capabilities for power grid support",
abstract = "This paper proposes a multi-control vehicle-to-grid charger with bi-directional power capability. The proposed charger can perform vehicle battery charging and discharging operations, as well as power grid support such as reactive power compensation, power factor correction, and grid voltage regulation. The performances of the charger controls were examined under various power grid scenarios. Results revealed that the vehicle-to-grid charger attained the highest charger efficiency when operating at unity power factor mode. Nevertheless, vehicle charging at unity power factor introduced a significant grid voltage drop which may violate the grid voltage limits. This problem was solved by using the voltage control, which injected reactive power to the power grid for accurate voltage regulation. This paper also proposed an autonomous multi-control selection algorithm to intelligently switch between the multiple charger controls in response to the power grid condition. Results showed that the proposed algorithm effectively instructed the charger to work in efficient control modes if the grid voltage was within the permissible voltage limits. Whenever the grid voltage exceeded the limits, the charger automatically switched to grid voltage control for power grid voltage regulation.",
keywords = "AC-DC power converters, DC-DC power converters, Electric vehicles, Power conversion, Reactive power control, Voltage control",
author = "Tan, {Kang Miao} and Sanjeevikumar Padmanaban and Yong, {Jia Ying} and Ramachandaramurthy, {Vigna K.}",
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A multi-control vehicle-to-grid charger with bi-directional active and reactive power capabilities for power grid support. / Tan, Kang Miao; Padmanaban, Sanjeevikumar; Yong, Jia Ying; Ramachandaramurthy, Vigna K.

In: Energy, Vol. 171, 03.2019, p. 1150-1163.

Research output: Contribution to journalJournal articleResearchpeer-review

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AU - Tan, Kang Miao

AU - Padmanaban, Sanjeevikumar

AU - Yong, Jia Ying

AU - Ramachandaramurthy, Vigna K.

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AB - This paper proposes a multi-control vehicle-to-grid charger with bi-directional power capability. The proposed charger can perform vehicle battery charging and discharging operations, as well as power grid support such as reactive power compensation, power factor correction, and grid voltage regulation. The performances of the charger controls were examined under various power grid scenarios. Results revealed that the vehicle-to-grid charger attained the highest charger efficiency when operating at unity power factor mode. Nevertheless, vehicle charging at unity power factor introduced a significant grid voltage drop which may violate the grid voltage limits. This problem was solved by using the voltage control, which injected reactive power to the power grid for accurate voltage regulation. This paper also proposed an autonomous multi-control selection algorithm to intelligently switch between the multiple charger controls in response to the power grid condition. Results showed that the proposed algorithm effectively instructed the charger to work in efficient control modes if the grid voltage was within the permissible voltage limits. Whenever the grid voltage exceeded the limits, the charger automatically switched to grid voltage control for power grid voltage regulation.

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