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

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

doi:10.1109/ecce.2012.6342512

Cited by 23 publications

(35 citation statements)

References 7 publications

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“…However, the potential applications of a single phase twoswitch buck type AC-DC Converter topology with inductor voltage control appears to be a good candidate for high current battery charging applications, when used as a PFC converter due to the fact that the CC and CV type battery charging characteristics can be easily implemented [18]. A variety of circuit topologies, and control methods have been developed for PEV battery chargers [15,[19][20][21][22][23][24][25]. Single-stage AC-DC power conversion where the low frequency ripple is large in the output current is only suitable for lead acid batteries.…”

Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

“…Therefore, this topology is good for power range below 1 kW [15,23]. Significant study outcomes related to single phase charger models are given in [15][16][17][18][19][20][21][22][23][24][25]. Based on a wide ranging study of literature it has been found that flyback converter operating in discontinuous current mode is the preferred topology [22].…”

Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

“…This converter is controlled using a hysteresis control and the design reduces the number of semiconductor switches and high current inductors. A four-leg bidirectional EV battery charger has been investigated for charge station applications in [20], where three legs are used for a single phase full-bridge-based Pulse Width Modulation (PWM) rectifier (AC-DC or DC-AC) during the battery charging/discharging operations. In this design, the PWM rectifier can compensate reactive and unbalanced active currents on single-phase three-wire distribution systems.…”

Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

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Behavioral Characterization of Electric Vehicle Charging Loads in a Distribution Power Grid Through Modeling of Battery Chargers

Haidar

Muttaqi

2016

IEEE Trans. on Ind. Applicat.

107

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Plug-in Electric Vehicle (PEV) is a new atypical load in power systems. In future, PEV load will play a significant role in the distribution grids. This integrated load into the power grid may overload the system components, increase power losses and may violate system constraints. Currently, the most common method of Electric Vehicle (EV) modeling is to consider the EV loads as constant power elements without considering the voltage dependency of EV charging system during state of charges (SOC). EV load demand cannot be considered as a constant power, as modeling as a constant power load will not provide accurate information about the behavior of charging system during charging process. As several research projects on smart grids are now looking into realistic models representing the realistic behavior of an EV loads, this paper proposes a methodology for modeling of EV charger integrated to an electricity grid in order to understand the impacts of EV charging load. A charging system was designed to capture the EV load behavior and extract the coefficients of the EV ZIP load model. A comparative study was carried out with different types of load models. The results indicate that the assumptions of load demand as a constant power to analysis the effect of PEVs on power grid would not be effective in real time application of PEVs. Abstract --Plug-in Electric Vehicle (PEV) is a new atypical load in power systems. In future, PEV load will play a significant role in the distribution grids. This integrated load into the power grid may overload the system components, increase power losses and may violate system constraints. Currently, the most common method of Electric Vehicle (EV) modeling is to consider the EV loads as constant power elements without considering the voltage dependency of EV charging system during state of charges (SOC). EV load demand cannot be considered as a constant power, as modeling as a constant power load will not provide accurate information about the behavior of charging system during charging process. As several research projects on smart grids are now looking into realistic models representing the realistic behavior of an EV loads, this paper proposes a methodology for modeling of EV charger integrated to an electricity grid in order to understand the impacts of EV charging load. A charging system was designed to capture the EV load behavior and extract the coefficients of the EV ZIP load model. A comparative study was carried out with different types of load models. The results indicate that the assumptions of load demand as a constant power to analysis the effect of PEVs on power grid would not be effective in real time application of PEVs.Index Terms--Plug-in electric vehicle; EV load modeling, Battery charger, Battery state of charge

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Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

Section: On-board Battery Chargers Their Design Philosophy and Mmentioning

confidence: 99%

See 1 more Smart Citation

Behavioral Characterization of Electric Vehicle Charging Loads in a Distribution Power Grid Through Modeling of Battery Chargers

Haidar

Muttaqi

2016

IEEE Trans. on Ind. Applicat.

107

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“…Thus, the present authors previously proposed a smart charger for EVs with a power quality compensator in SPTWDFs [10]. Figure 2 shows a power circuit diagram of the previously proposed smart charger for EVs with a power quality compensator [10]. The proposed smart charger consists of four-leg insulated-gate bipolar transistors (IGBTs).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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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.

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“…PLL is used to find the phase information of input voltage which creates the transients as the frequency ratio changes. Smart charger for electrical vehicle using three wire distribution feeders is proposed in [10]. To achieve bi-directional flow six active switches are used, which increases switching losses, hardware and complexity.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Single Phase Bi-Directional Converter Using CSPWM and Sinusoidal-PWM Techniques for Enhancement in Power Factor and Voltage Regulation

Mapari¹,

Wakde²

2015

Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering

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Abstract-This paper present a performance analysis of bi-directional converter using continuous switching pulse width modulation (CSPWM) and sinusoidal pulse width modulation (S-PWM) techniques. The analysis is carried out by means of rectification and inversion operation using two cases. In CASE-I CSPWM technique is used for the rectification operation and S-PWM is for inversion operation. And in CASE-II both the rectification and inversion are implemented using S-PWM technique. Both the modulation techniques are digitally implemented and the optimized parameters are achieved without current control loop. The analysis is based on the optimization of parameters like power factor, voltage regulation, harmonic distortion and bi-directional operation.These converter topologies are evaluated on the basis of silent features like partial digital implementation, low cost, simple and high performance to analyse its applicability. The proposed converter is bridgeless and transformer-less which highlights its high efficiency, high power factor and low harmonic distortions for the CASE-I.

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

Cited by 23 publications

References 7 publications

Behavioral Characterization of Electric Vehicle Charging Loads in a Distribution Power Grid Through Modeling of Battery Chargers

Behavioral Characterization of Electric Vehicle Charging Loads in a Distribution Power Grid Through Modeling of Battery Chargers

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

Performance Analysis of Single Phase Bi-Directional Converter Using CSPWM and Sinusoidal-PWM Techniques for Enhancement in Power Factor and Voltage Regulation

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