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Article

Constant DC-Capacitor Voltage-Control-Based Harmonics Compensation Strategy of Smart Charger for Electric Vehicles in Single-Phase Three-Wire Distribution Feeders

by 1,†, 1,†, 1,*,† and 2,†
1
Department of Electrical and Electronic Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
2
Department of Electrical Engineering, National Institute of Technology, Ube College, 2-14-1 Tokiwadai, Ube, Yamaguchi 755-8555, Japan
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Jose Fernando Alves da Silva
Energies 2017, 10(6), 797; https://doi.org/10.3390/en10060797
Received: 17 March 2017 / Revised: 6 June 2017 / Accepted: 6 June 2017 / Published: 12 June 2017
(This article belongs to the Special Issue Power Electronics in Power Quality)
This paper discusses harmonic current compensation of the constant DC-capacitor voltage-control (CDCVC)-based strategy of smart chargers for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs) under nonlinear load conditions. The basic principle of the CDCVC-based harmonics compensation strategy under nonlinear load conditions is discussed in detail. The instantaneous power flowing into the three-leg pulse-width modulated (PWM) rectifier, which performs as a smart charger, shows that the CDCVC-based strategy achieves balanced and sinusoidal source currents with a unity power factor. The CDCVC-based harmonics compensation strategy does not require any calculation blocks of fundamental reactive, unbalanced active, and harmonic currents. Thus, the authors propose a simplified algorithm to compensate for reactive, unbalanced active, and harmonic currents. A digital computer simulation is implemented to confirm the validity and high practicability of the CDCVC-based harmonics compensation strategy using PSIM software. Simulation results demonstrate that balanced and sinusoidal source currents with a unity power factor in SPTWDFs are obtained on the secondary side of the pole-mounted distribution transformer (PMDT) during both the battery-charging and discharging operations in EVs, compensating for the reactive, unbalanced active, and harmonic currents. View Full-Text
Keywords: smart charger; single-phase three-wire distribution feeders (SPTWDFs); harmonics compensation; constant DC-capacitor voltage control (CDCVC); three-leg PWM rectifier; bidirectional DC-DC converter; single-phase PLL circuit; single-phase d-q coordinate smart charger; single-phase three-wire distribution feeders (SPTWDFs); harmonics compensation; constant DC-capacitor voltage control (CDCVC); three-leg PWM rectifier; bidirectional DC-DC converter; single-phase PLL circuit; single-phase d-q coordinate
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MDPI and ACS Style

Ikeda, F.; Yamada, H.; Tanaka, T.; Okamoto, M. Constant DC-Capacitor Voltage-Control-Based Harmonics Compensation Strategy of Smart Charger for Electric Vehicles in Single-Phase Three-Wire Distribution Feeders. Energies 2017, 10, 797. https://doi.org/10.3390/en10060797

AMA Style

Ikeda F, Yamada H, Tanaka T, Okamoto M. Constant DC-Capacitor Voltage-Control-Based Harmonics Compensation Strategy of Smart Charger for Electric Vehicles in Single-Phase Three-Wire Distribution Feeders. Energies. 2017; 10(6):797. https://doi.org/10.3390/en10060797

Chicago/Turabian Style

Ikeda, Fuka; Yamada, Hiroaki; Tanaka, Toshihiko; Okamoto, Masayuki. 2017. "Constant DC-Capacitor Voltage-Control-Based Harmonics Compensation Strategy of Smart Charger for Electric Vehicles in Single-Phase Three-Wire Distribution Feeders" Energies 10, no. 6: 797. https://doi.org/10.3390/en10060797

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