Digital Sliding Mode Control of a 3-Phase AC-DC rectifier for Ultra-Fast Charging of EV Battery⁎

Q3 Engineering IFAC-PapersOnLine Pub Date : 2024-01-01 DOI:10.1016/j.ifacol.2024.07.520

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Abstract

This paper describes a digital sliding mode control (SMC) technique applied to a three-phase four-wire rectifier operating at a fixed frequency for ultra-fast charging of electric vehicle (EV) battery. The control algorithm employs three decoupled sliding mode controllers to achieve loss-free resistor (LFR) behavior in each phase for power factor correction (PFC). The design of the sliding mode controller is twofold. The first one is to guarantee convergence of the sliding variable to zero. The equivalent control and the discrete-time dynamic model of the rectifier are obtained by imposing sliding-mode regime in discrete-time. The second one is to stabilize the inner-loop under the obtained control law. Theoretically, the resulting inner-loop is stable with a deadbeat behavior in the inner current loop. The results are validated by numerical simulations using on a 350 kW AC-DC rectifier for EV battery ultra-fast charging applications. The numerical simulation results performed on the switched model implemented in PSIM© software are in close agreement with the theoretical analysis.

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用于电动汽车电池超快充电的三相交直流整流器的数字滑动模式控制⁎

本文介绍了一种数字滑动模式控制（SMC）技术，该技术适用于以固定频率工作的三相四线整流器，用于电动汽车（EV）电池的超快速充电。该控制算法采用了三个解耦滑动模式控制器，以实现每相功率因数校正（PFC）的无损耗电阻（LFR）行为。滑动模式控制器的设计包括两个方面。首先是保证滑动变量收敛为零。整流器的等效控制和离散时间动态模型是通过在离散时间中实施滑动模式机制而获得的。其次是在所获得的控制律下稳定内环。从理论上讲，所得到的内环是稳定的，内电流环中存在死区行为。通过对用于电动汽车电池超快速充电应用的 350 kW AC-DC 整流器进行数值模拟，验证了上述结果。在 PSIM© 软件中实施的开关模型的数值模拟结果与理论分析结果非常吻合。

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

IFAC-PapersOnLine Engineering-Control and Systems Engineering

CiteScore

1.70

自引率

0.00%

发文量

1122

期刊介绍： All papers from IFAC meetings are published, in partnership with Elsevier, the IFAC Publisher, in theIFAC-PapersOnLine proceedings series hosted at the ScienceDirect web service. This series includes papers previously published in the IFAC website.The main features of the IFAC-PapersOnLine series are: -Online archive including papers from IFAC Symposia, Congresses, Conferences, and most Workshops. -All papers accepted at the meeting are published in PDF format - searchable and citable. -All papers published on the web site can be cited using the IFAC PapersOnLine ISSN and the individual paper DOI (Digital Object Identifier). The site is Open Access in nature - no charge is made to individuals for reading or downloading. Copyright of all papers belongs to IFAC and must be referenced if derivative journal papers are produced from the conference papers. All papers published in IFAC-PapersOnLine have undergone a peer review selection process according to the IFAC rules.

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