Abstract
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 language | English |
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Article number | 6515628 |
Pages (from-to) | 2628-2635 |
Number of pages | 8 |
Journal | IEEE Transactions on Industry Applications |
Volume | 49 |
Issue number | 6 |
DOIs | |
Publication status | Published - Nov 2013 |
Externally published | Yes |
Keywords
- 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