Concurrent and Non-Concurrent Pulse-Current Charging for Electric Vehicle Lithium-Ion Batteries

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Vehicular Technology Pub Date : 2024-12-24 DOI:10.1109/TVT.2024.3521949

Linta Eliya Mathew;Ashish K Panchal

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Abstract

By the end of 2030, a large electric vehicle (EV) adoption on the roads will overburden the power grid for EV charging. Therefore, in order to divert EV loads from the grid, a grid-free EV battery charger is proposed in this article. The charger consists of a photovoltaic (PV) panel as a source with parallel sets of four-switch-buck-boost (FSBB) converters and Lithium-ion (Li-ion) batteries. The main theme of the control method is to harvest maximum PV power while delivering energy to the battery with contemplating battery life extension. In order to fulfill these two control objectives, an accurate 4-point PV-MPPT combined with pulse current battery charging methods are employed. In a simulation study of the parallel configuration with a 250 W PV panel and two 48 V Li-ion batteries, the concurrent operation of converters (COC) and non-concurrent operation of converters (NOC) are examined. In the COC pulse charging, two batteries simultaneously receive half PV power, whilst in the NOC pulse charging, two batteries alternately receive full PV power. It has been established that the NOC delivers continuous PV power and charges both batteries at a faster rate than the COC. Further, the simulation analysis is illustrated with a 20 kW PV parking shed for workplace for charging ten e-cars' batteries possessing different initial SoCs in NOC. Finally, an experimental proof of the concept is validated through a laboratory-scale hardware design of a 250 W PV panel charging two 48 V Li-ion batteries.

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电动汽车锂离子电池并发与非并发脉冲充电

到2030年底，道路上的大量电动汽车（EV）将使电动汽车充电的电网负担过重。因此，为了将电动汽车负荷从电网中分流，本文提出了一种无电网电动汽车电池充电器。该充电器由一个光伏（PV）面板作为电源，与并联的四开关buck-boost （FSBB）转换器和锂离子（Li-ion）电池组成。该控制方法的主题是获取最大的光伏功率，同时将能量输送到电池，同时考虑延长电池寿命。为了实现这两个控制目标，采用了精确的4点PV-MPPT结合脉冲电流电池充电方法。在250w光伏面板和两块48v锂离子电池并联配置的仿真研究中，研究了变流器的并发运行（COC）和非并发运行（NOC）。在COC脉冲充电中，两个电池同时接收一半的光伏功率，而在NOC脉冲充电中，两个电池交替接收全部的光伏功率。已经确定，NOC提供连续的光伏电力，并以比COC更快的速度为两个电池充电。此外，以20 kW的光伏停车棚为工作场所，对NOC中具有不同初始soc的10个电动汽车电池进行充电，进行了仿真分析。最后，通过250w光伏板充电两个48v锂离子电池的实验室规模硬件设计验证了该概念的实验证明。

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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来源期刊

IEEE Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.