Voltage‐dependent modelling of fast charging electric vehicle load considering battery characteristics

Shukla, Akanksha; Verma, Kusum; Kumar, Rajesh

doi:10.1049/iet-est.2017.0096

Cited by 32 publications

(14 citation statements)

References 32 publications

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“…For voltage stability studies, energy required by charger should be monitored during fluctuations in system voltages. For this work, derived voltage dependent load model of EV charger is adopted from References . Mathematically, active power of EV can be represented as follows.

P_{italicEVLM ‐ italicII} = P_{0 k} ({}, α_{p} + β_{p} V_{k}^{a}),

where P EVLM ‐ II is total required active power while considering EV LM ‐ II load model.…”

Section: Load Modellingmentioning

confidence: 99%

A modified current injection load flow method under different load model of EV for distribution system

Jha

Kumar

Dheer

et al. 2019

Int Trans Electr Energ Syst

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Summary In this article, a modified single‐phase current injection based load flow method for the distribution network with different load models of electric vehicle (EV) is proposed. The equations related to injected currents are non‐linear and are represented in rectangular co‐ordinates. The PQ and PV bus representations in load flow formulation are modified for the three different load models of EV including polynomial or ZIP load model (EV LM‐I), voltage dependent load model (EV LM‐II) and constant current load model (EV LM‐III). In addition, a stochastic modelling of EV load and selection of candidate locations for DGs integration are also presented. The effect of the proposed EV load models in terms of real power loss index (ILP), reactive power loss index (ILQ), voltage profile index (IV D) and the MVA capacity index (IC) has been studied on IEEE 38‐bus distribution system. Based on the values of ILP, ILQ, IV D and IC, best load model for EVs from among the load models EV LM‐I, EV LM‐II and EV LM‐III is finally obtained.

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P_{italicEVLM ‐ italicII} = P_{0 k} ({}, α_{p} + β_{p} V_{k}^{a}),

where P EVLM ‐ II is total required active power while considering EV LM ‐ II load model.…”

Section: Load Modellingmentioning

confidence: 99%

A modified current injection load flow method under different load model of EV for distribution system

Jha

Kumar

Dheer

et al. 2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…Overloading from fast‐charging stations imposes an additional burden on the power grid, voltage instability, and reliability problems. It also influences various parameters of distribution networks such as voltage profile, harmonic distortions, and peak load characteristics …”

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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“…Ever increasing effects of green house gases from the conventional IC engines lead to environmental concerns. This paved to the booming of pollution free electric vehicles (EVs) in the automobile industry [1][2][3]. However, EV battery charging from the utility grid increases the load demand on the grid and eventually increases the electricity bills to the EV owners which necessitate the use of alternate energy sources [4,5].…”

Section: Introductionmentioning

confidence: 99%

Off‐board electric vehicle battery charger using PV array

Nachinarkiniyan

Krithiga

2020

IET Electrical Systems in Transportation

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During the recent decade, the automobile industry is booming with the evolution of electric vehicle (EV). Battery charging system plays a major role in the development of EVs. Charging of EV battery from the grid increases its load demand. This leads to propose a photovoltaic (PV) array-based off-board EV battery charging system in this study. Irrespective of solar irradiations, the EV battery is to be charged constantly which is achieved by employing a backup battery bank in addition to the PV array. Using the sepic converter and three-phase bidirectional DC-DC converter, the proposed system is capable of charging the EV battery during both sunshine hours and non-sunshine hours. During peak sunshine hours, the backup battery gets charged along with the EV battery and during non-sunshine hours, the backup battery supports the charging of EV battery. The proposed charging system is simulated using Simulink in the MATLAB software and an experimental prototype is fabricated and tested in the laboratory and the results are furnished in this study.

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Voltage‐dependent modelling of fast charging electric vehicle load considering battery characteristics

Cited by 32 publications

References 32 publications

A modified current injection load flow method under different load model of EV for distribution system

A modified current injection load flow method under different load model of EV for distribution system

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

Off‐board electric vehicle battery charger using PV array

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