Different fast charging methods and topologies for EV charging

Trivedi, Nitin; Gujar, Nikhil Shashikant; Sarkar, Subrata; Pundir, S. P. S.

doi:10.1109/etechnxt.2018.8385313

Cited by 36 publications

(12 citation statements)

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“…In a constant voltage charge, the charging voltage is maintained at the maximum voltage that should be applied to a certain type of battery while the charging current slowly decreases as the full battery charge is approached. This is an effective method when using lower voltages, as temperature usually isn't an issue, but lengthy charge times are of concern [34].…”

Section: Constant Voltagementioning

confidence: 99%

“…As the name implies, this charging method applies a constant current as the battery voltage builds up to its full charge value. Even if the constant current applied is within the rated current, the constant current to the battery can easily cause overheating and damage, compromising the life of the battery [34].…”

Section: Constant Currentmentioning

confidence: 99%

“…It should be noted that the circuit parameters are dependent on battery SoC and temperature [42]. Pulse charging sends pulses of current to the battery in a fashion that optimizes the charging time while considering polarization, battery heating, SoC, and variable battery impedance [34]. The rest time of each pulse period allows the ions to diffuse through the electrode materials, increasing the efficiency of the charging process [41].…”

Section: Pulse Chargingmentioning

confidence: 99%

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Advanced Electric Vehicle Fast-Charging Technologies

et al. 2019

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Negative impacts from the dominant use of petroleum-based transportation have propelled the globe towards electrified transportation. With this thrust, many technological challenges are being encountered and addressed, one of which is the development and availability of fast-charging technologies. To compete with petroleum-based transportation, electric vehicle (EV) battery charging times need to decrease to the 5–10 min range. This paper provides a review of EV fast-charging technologies and the impacts on the battery systems, including heat management and associated limitations. In addition, the paper presents promising new approaches and opportunities for power electronic converter topologies and systems level research to advance the state-of-the-art in fast-charging.

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Section: Constant Voltagementioning

confidence: 99%

Section: Constant Currentmentioning

confidence: 99%

Section: Pulse Chargingmentioning

confidence: 99%

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Advanced Electric Vehicle Fast-Charging Technologies

et al. 2019

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“…The charging stations of EVs have variant structures. In most of them, the electric vehicle supply equipment (EVSE) connects to the network directly …”

Section: Introductionmentioning

confidence: 99%

A novel structure for high step‐up DC‐DC converter with flexibility under the variable loads for EV solar charging system

Eskandarian

Harchegani

Kazemi

2020

Int Trans Electr Energ Syst

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Summary Recently, with the development of electric vehicles (EVs), in order to compensate for the undesirable effects of charging stations on grid characteristics, paying attention to the local generators based on renewable energy has increased and has caused to develop of the peripheral systems. In this paper, a high step‐up multistage structure consisting of several integrated boost flyback converter (IBFC) has been proposed. In the combination of these stages, the boost subconverters are interleaved in order to charge the battery bank and are in series with the flyback subconverters in order to supply the variable loads. The proposed structure has advantages, such as applicability in high voltage step‐up cases, enhanced reliability in photovoltaic system, and flexibility against variable power consumption. In addition, this structure at the no‐load condition has the ability to charge the battery system with proper voltage and supply several vehicles simultaneously without any voltage drop. Furthermore, the energy stored in leakage inductor can be recycled instead of damping with passive snubbers, resulting in high conversion efficiency and simple circuit structure with fewer components. The performance of proposed structure is analyzed in detail at no‐load, loading, and input power outage conditions. Then, the proposed converter with solar panel input power in order to supply the EV charging system is simulated in Matlab/Simulink to verify the analytical results. Finally, a three‐stage prototype (17.3–240 V) with 60 W solar panel input has been developed, which validates the feasibility and the effectiveness of the proposed topology using variable loads (180, 360, 720 W).

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“…Scientific publications present solutions using transformers to galvanically separate the inverter, which converts the energy of the photovoltaic source from the input rectifier of the AC/DC/DC converter of the EV charger [3]. An interesting solution seems to be the use of a three-winding Yyd transformer in the 12-pulse diode rectifier of the AC/DC/DC charger [4]. One of the authors' research goals is to demonstrate the possibility of obtaining a level of harmonic content in the inverter current of a value close to when using a 12-pulse rectifier with a Yyd transformer.…”

Section: Introductionmentioning

confidence: 99%

Mitigation Methods of Voltage Disturbances and Harmonic Currents of PWM Two-Level Inverter Supplying The 6-Pulse Diode Rectifier

Szymański¹,

Żurek-Mortka²

2020

Adv. sci. technol. eng. syst. j.

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Common-mode voltage Current harmonics Differential-mode voltage PWM modulation Three-phase voltage inverter Two-level PWM inverter In fast charging station for Battery Electric Vehicles (BEVs) the three-phase PWM (Pulse Width Modulation) inverters generate parasitic Differential-Mode Voltages (DMV) and Common-Mode Voltages (CMV). Parasitic voltages are a side effect of using the width modulation to shape the phase-to-phase inverter's voltage. In this article the authors present a mathematical description of the differential-mode (DM) and common-mode (CM) voltages and carry out their spectral analysis. Based on the spectral harmonics analysis, the authors present a method for filtration of harmonics of DM and CM voltages aimed at limiting the capacitance parasitic currents: due to DM voltage-phase-to-phase parasitic current and CM voltage-ground parasitic currents. A resonant filter was used to eliminate harmonics of the input rectifier of the DC/DC converter supplied from a voltage inverter. As a result of tests, the T HD i harmonic content factor was significantly reduced and ground leakage current was eliminated from the PE electric shock protection system.

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Different fast charging methods and topologies for EV charging

Cited by 36 publications

References 1 publication

Advanced Electric Vehicle Fast-Charging Technologies

Advanced Electric Vehicle Fast-Charging Technologies

A novel structure for high step‐up DC‐DC converter with flexibility under the variable loads for EV solar charging system

Mitigation Methods of Voltage Disturbances and Harmonic Currents of PWM Two-Level Inverter Supplying The 6-Pulse Diode Rectifier

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