Smart charger for electric vehicles with power-quality compensator on single-phase three-wire distribution feeders

Toshihiko Tanaka, Tsukasa Sekiya, Hidenori Tanaka, Masayuki Okamoto, Eiji Hiraki

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


In this paper, we propose a smart charger for electric vehicles with a power-quality compensator. The proposed smart charger consists of four-leg insulated-gate bipolar transistors (IGBTs). Three legs are used for a single-phase full-bridge-based pulsewidth-modulated (PWM) rectifier, which converts power from ac to dc during the battery-charging operation or from dc to ac during the battery-discharging operation. This PWM rectifier can compensate reactive and unbalanced active currents on single-phase three-wire distribution systems because the third leg is connected to the neutral line of single-phase three-wire distribution feeders. The fourth leg is used as a bidirectional dc-dc converter for battery-charging and battery-discharging operations. The three-leg PWM rectifier uses only constant dc-capacitor voltage control, which is commonly used in active power line conditioners. Thus, the authors have developed the simplest possible control method for a single-phase power-quality compensator. The basic principle of the proposed smart charger is discussed in detail and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that balanced source currents are obtained on the secondary side of the pole-mounted distribution transformer for battery-charging and battery-discharging operations.

Original languageEnglish
Article number6515628
Pages (from-to)2628-2635
Number of pages8
JournalIEEE Transactions on Industry Applications
Issue number6
Publication statusPublished - Nov 2013
Externally publishedYes


  • Bidirectional dc-dc converter
  • constant dc-capacitor voltage control
  • single-phase d-q transformation
  • single-phase phase-locked-loop circuit
  • single-phase three-wire distribution system
  • smart charger
  • three-leg inverter

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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