Robust control strategy for a high-power off-board EV charger connected to grid-tied critical loads

2023 IEEE Texas Power and Energy Conference (TPEC) Pub Date : 2023-02-13 DOI:10.1109/TPEC56611.2023.10078516

M. Mehrasa, D. Selvaraj, H. Salehfar

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引用次数: 1

Abstract

One of the main duties of electric vehicles (EVs) is to provide smooth and robust power flow for the grid-tied loads in the vehicle-to-grid application. To this end, this paper proposes a comprehensive control system for a high-power off-board EV charger to appropriately generate/consume power when sudden reference power alteration and disturbance on the DC-link voltage measurement exist. The EV charger consists of two bidirectional DC/AC converter and single-phase dual active bridge (SP-DAB) converter which are connected to the power grid and EV battery, respectively. The grid-tied DC/AC converter is controlled using a two control-loop structure in d-q reference frame and also other controller including both steady-state and dynamic components are designated for the SP-DAB. In addition, the DC-link voltage robustness feature is evaluated based on analyzing the simultaneous effects of the SP-DAB transmitted power and phase shift angle (PSA) errors on the DC-link voltage error. MATLAB/SIMULINK environment is employed to illustrate the suitable responses of the high-power off-board EV charger.

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并网临界负载下大功率车载充电器鲁棒控制策略

在车对网应用中，电动汽车的主要任务之一是为并网负荷提供平稳、稳健的电力流。为此，本文提出了一种大功率车载充电器综合控制系统，在参考功率突然变化和直流链路电压测量受到干扰时，能够适当地产生/消耗功率。电动汽车充电器由两个双向DC/AC变换器和单相双有源桥式(SP-DAB)变换器组成，分别与电网和电动汽车电池相连。并网DC/AC变换器采用d-q参考系中的两个控制环结构进行控制，SP-DAB还指定了其他控制器，包括稳态和动态组件。此外，通过分析SP-DAB传输功率和相移角(PSA)误差对直流电压误差的同时影响，评估了直流电压鲁棒性特性。利用MATLAB/SIMULINK环境对大功率车载充电器的响应进行了仿真。

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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2023 IEEE Texas Power and Energy Conference (TPEC)

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