A Comprehensive SoC-based Energy Management of a PV-BESS Microgrid
A Comprehensive SoC-based Energy Management of a PV-BESS Microgrid
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基于 SoC 的 PV-BESS 微电网综合能源管理
DOI：
10.1109/sefet55524.2022.9909103
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
M. Mulla
中科院分区：
文献类型：
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作者：
Ranjith Kumar Uppuluri;R. Chilipi;M. Mulla
针对由电压源逆变器（VSI）、太阳能光伏（PV）阵列、蓄电池储能系统（BESS）和负载组成的微电网，提出了一种基于SOC的能量管理方法。由于MG在电网连接（GC）和孤岛（IS）模式下操作，因此在从IS到GC模式的过渡期间采用负载电压的幅度和相位与电网的幅度和相位的简单顺序匹配。在电网故障条件下，开发了从GC到IS模式的瞬时无缝转换。在GC模式下，VSI以电流控制方式运行，升压转换器（BC）以最大功率点跟踪（MPPT）方式运行太阳能光伏阵列，双向转换器（BDC）根据BESS的充电状态（SoC）控制BESS的充电。在IS模式下，VSI以电压控制方式操作，BDC调节VSI的DC链路电压，BC基于SoC和负载条件以MPPT/电压调节模式操作太阳能PV阵列。开发的能量管理提供了MG的全面控制，确保在辐照和负载变化的动态变化下持续向负载供电。在MATLAB/Simulink环境下对所提出的控制方法进行了仿真验证。
This paper deals with a state of charge (SoC)-based energy management of a microgrid (MG), which consists of a voltage source inverter (VSI), solar photovoltaic (PV) array, a battery energy storage system (BESS), and loads. As the MG is operated in grid connected (GC) and islanded (IS) modes, a simple sequential matching of magnitude and phase of load voltage to that of the grid is employed during the transition from IS to GC mode. An instantaneous seamless transition from GC to IS mode under grid fault conditions is developed. In GC mode, the VSI operates in current control, a boost converter (BC) operates solar PV array at maximum power point tracking (MPPT), and a bidirectional converter (BDC) controls the charging of BESS depending on the condition of its state of charge (SoC). In IS mode, the VSI operates in voltage control, the BDC regulates the DC-link voltage of VSI, and the BC operates the solar PV array in MPPT/voltage regulation mode based on SoC and load condition. The developed energy management offers comprehensive control of the MG ensuring continual supply to the loads under dynamic changes in irradiation and load changes. The effectiveness of the proposed control is tested using MATLAB/Simulink environment.