A vehicle-to-grid enabled bidirectional multilevel converter for renewable energy-integrated electric vehicle charging system

IF 7 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments Pub Date : 2025-10-09 DOI:10.1016/j.seta.2025.104634

Malle Lingamaiah , Arvind Mittal , Shailendra Kumar

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引用次数: 0

Abstract

The continuous reduction in photovoltaic (PV) module costs and rapid advancements in Electric Vehicle (EV) technology have driven the integration of solar energy into EV charging infrastructure. In India, bidirectional EV charging infrastructure is still emerging, with existing systems predominantly based on unidirectional or two-level converter topologies. A clear research gap exists in adopting multilevel bidirectional converter configuration for enhanced power flow control and renewable energy integration. This work proposes a V2G (Vehicle-to-Grid) 5-Level Bidirectional Multilevel Converter (5L-BMC) to enable efficient operation across G2V (Grid-to-Vehicle), V2G, and PV-to-Grid modes. The proposed system is developed in MATLAB/Simulink and validated through real-time experimentation using the OPAL-RT test bench. The results reveal high power conversion efficiency with a peak of 97.1 % during G2V and 96.7 % in V2G operations. Furthermore, the proposed system exhibits excellent power quality, achieving a low grid current Total Harmonic Distortion (THD) of 0.9 % in V2G mode and maintaining stable DC bus voltage regulation. These results confirm the suitability of the proposed topology for reliable, grid compliant and high performance EV charging applications in renewable energy-integrated smart grids.

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一种用于可再生能源集成电动汽车充电系统的车对网双向多电平变换器

光伏（PV）组件成本的持续下降和电动汽车（EV）技术的快速发展推动了太阳能与电动汽车充电基础设施的整合。在印度，双向电动汽车充电基础设施仍在兴起，现有系统主要基于单向或双电平转换器拓扑结构。在采用多电平双向变流器配置加强潮流控制和可再生能源并网方面存在明显的研究空白。本研究提出了一种V2G（车到电网）5级双向多电平转换器（5L-BMC），以实现G2V（电网到车辆）、V2G和pv到电网模式的高效运行。该系统在MATLAB/Simulink中开发，并在OPAL-RT测试台上进行了实时实验验证。结果表明，在G2V和V2G工作时，功率转换效率最高，分别达到97.1%和96.7%。此外，该系统具有优异的电能质量，在V2G模式下实现了低电网电流总谐波失真（THD）为0.9%，并保持稳定的直流母线电压调节。这些结果证实了所提出的拓扑结构在可再生能源集成智能电网中可靠、电网兼容和高性能电动汽车充电应用的适用性。

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.