Rooftop Solar-Based EV Charging in India: A Techno-Economic Comparison

2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC) Pub Date : 2021-11-21 DOI:10.1109/APPEEC50844.2021.9687758

Ammu Susanna Jacob

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Abstract

Decentralised renewable energy resources for electric vehicle (EV) charging pave the way for green mobility. In this paper, we analyse different rooftop solar-based EV charging station (EVCS) configurations. The configurations are designed with and without battery storage and grid connection. A techno-economic framework is developed based on the power flow interactions between rooftop photovoltaic (RTPV), grid, and battery storage to calculate the life-cycle costing of the system and life-cycle cost of energy (LCOE). The results of the techno-economic model suggest that an adequate size of RTPV reduces the LCOE as compared to a purely grid-connected EVCS. Adding a small battery storage unit to this configuration increases the LCOE by 1.3-1.6 /kWh. Additionally, this configuration yields more revenue from the grid due to higher net export. However, an off-grid rooftop solar-based EVCS with battery storage is more expensive due to reliability concerns about the oversizing of the battery. The techno-economic framework and the resultant LCOE comparisons done in the Indian context will help developers make informed choices to enable green mobility.

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印度屋顶太阳能电动车充电:技术经济比较

用于电动汽车充电的分散可再生能源为绿色出行铺平了道路。在本文中，我们分析了不同的屋顶太阳能电动车充电站(EVCS)配置。配置设计有电池存储和电网连接。基于屋顶光伏(RTPV)、电网和电池存储之间的功率流相互作用，建立了一个技术经济框架来计算系统的生命周期成本和生命周期能源成本(LCOE)。技术经济模型的结果表明，与纯粹的并网EVCS相比，适当规模的RTPV可以降低LCOE。在此配置中添加小型电池存储单元可使LCOE提高1.3-1.6 /kWh。此外，由于净出口增加，这种配置可以从电网中获得更多收入。然而，由于对电池尺寸过大的可靠性担忧，带有电池存储的离网屋顶太阳能EVCS更加昂贵。在印度背景下进行的技术经济框架和由此产生的LCOE比较将有助于开发商做出明智的选择，以实现绿色交通。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)

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