RETRACTED: Multi-level charging stations for electric vehicles by considering ancillary generating and storage units

Wang, Shubin; Li, Jiabao; Liu, Xinni; Zhao, Erlong; Eghbalian, Nasrin

doi:10.1016/j.energy.2022.123401

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…This sector contributes significantly to both energy consumption and greenhouse gas production. The shift towards electric vehicles (EVs), powered by batteries charged from the grid, emerges as a promising solution to mitigate environmental impact [3]. Recent statistics reveal that the global number of EVs reached 16.5 million in 2022, tripling from 5.5 million in 2018.…”

Section: Introduction 11 Motivationmentioning

confidence: 99%

WITHDRAWN: Development of a Bidirectional Charger with Current-Controlled Synchronous Reference Frame Hysteresis Based on Unit Templates

khali,

Khali

2024

Preprint

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The existing distribution networks were not originally designed to accommodate the extensive infrastructure of electric vehicle (EV) charging, potentially leading to power quality (PQ) issues at the point of common coupling (PCC). To address this, a two-mode, unit template-based synchronous reference frame hysteresis current-controlled (SRF-HCC) three-phase Level 2 EV charger is proposed. In the first mode (G2V), the focus is on charging the EV battery from the grid, utilizing current and voltage control techniques to enhance battery life and performance. The second mode (V2G) enables the discharge of the EV's stored energy to the grid, allowing the sale of power to support transient effects on the grid voltage and frequency, thereby enhancing the grid's PQ. The hysteresis current control (HCC) generates switching pulses for both the AC-DC and buck-boost converters. The SRF-based unit template-based control (SRF-UTC) method ensures system stability, voltage, and frequency regulation for power exchange with the grid. The proposed EV charger system consists of a 3-phase bidirectional AC-DC converter, a bidirectional buck-boost converter, and a filter circuit. The system's performance was evaluated through MATLAB/Simulink modeling in two case studies.

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Section: Introduction 11 Motivationmentioning

confidence: 99%

WITHDRAWN: Development of a Bidirectional Charger with Current-Controlled Synchronous Reference Frame Hysteresis Based on Unit Templates

khali,

Khali

2024

Preprint

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show abstract

“…Fossil fuels, when burnt, produce greenhouse gases that have far-reaching effects on the environment. The electrification of the transport sector has been considered a perfect medium for moving away from internal combustion engines to electric vehicles (EVs) because they are powered by batteries that are charged from the grid [1].…”

Section: Motivationmentioning

confidence: 99%

Design of a bidirectional EV charger using unit template-based current-controlled synchronous reference frame hysteresis

Etemesi,

Megahed,

Kanaya

et al. 2024

Journal of Electrical Engineering

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Existing distribution networks were not designed with large-scale electric vehicle (EV) charging infrastructure in mind. Integrating EV charging stations with the distribution grid might lead to power quality (PQ) issues at the point of common coupling (PCC). This work proposes a two-mode, unit template-based synchronous reference frame hysteresis current-controlled (SRF-HCC) three-phase Level 2 EV charger. Mode one focuses on charging the EV battery from the grid (G2V) and utilizes current and voltage control techniques to enhance battery life and performance. Whereas mode two enables the EV’s stored energy to be discharged to the grid (V2G) by the EV user, allowing the sale of power to support the transient effect of the grid voltage and frequency and enhancing the grid’s PQ. The HCC generates switching pulses for both the AC-DC and buck-boost converters. The SRF-based unit template-based control (SRF-UTC) method ensures system stability, voltage, and frequency regulation for power exchange with the grid by combining its efficiency with that of the HCC. The EV charger proposal comprises three primary components: a 3-phase bidirectional AC-DC converter, a bidirectional buck-boost converter, and a filter circuit. The proposed system was modeled using MATLAB/Simulink and evaluated in two case studies to assess its performance.

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“…In this study, circular economy implementation (CEIM) is defined as a series of activities for enterprises to adjust and optimize production process, material use, waste disposal and other aspects in accordance with the 3R principle (reduction (RDC), reuse (RUC) and recycle (RCC)) (Nechifor et al, 2020). Specifically, reduction requires enterprises to reduce resource and energy consumption as much as possible by reducing working hours, improving equipment efficiency and optimizing production processes (Saidani et al, 2019;Wang et al, 2022a;Wang et al, 2022c). Reuse requires enterprises to reuse packaging materials, raw materials and production auxiliary spare parts as much as possible (Geng et al, 2012).…”

Section: Theoretical Analysis and Research Hypothesis 21 Circular Eco...mentioning

confidence: 99%

Circular economy implementation and business performance: The mediating role of environmental performance in the Chinese energy production enterprises

Dong

Wang

Li³

et al. 2022

Front. Environ. Sci.

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This study proposes a model to explain the effect of circular economy implementation on business performance in the Chinese energy production enterprises. Moreover, it analyzes the mediating role of environmental performance in explaining the influence mechanism. Our study used data from the Chinese energy production enterprises, which included 295 firms. We applied the methodological approach, partial least square structural equation modeling (PLS-SEM), to test the hypothetical model. The results show that circular economy implementation have a positive on business performance, and environmental performance plays a part of the intermediary role in the circular economy implementation affecting business performance. Finally, some promising avenues for future research and implications for managers and policymakers are suggested based on these findings.

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RETRACTED: Multi-level charging stations for electric vehicles by considering ancillary generating and storage units

Cited by 10 publications

References 27 publications

WITHDRAWN: Development of a Bidirectional Charger with Current-Controlled Synchronous Reference Frame Hysteresis Based on Unit Templates

WITHDRAWN: Development of a Bidirectional Charger with Current-Controlled Synchronous Reference Frame Hysteresis Based on Unit Templates

Design of a bidirectional EV charger using unit template-based current-controlled synchronous reference frame hysteresis

Circular economy implementation and business performance: The mediating role of environmental performance in the Chinese energy production enterprises

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