A Multiport Bidirectional LLC Resonant Converter for Grid-Tied Photovoltaic-Battery Hybrid System
A Multiport Bidirectional LLC Resonant Converter for Grid-Tied Photovoltaic-Battery Hybrid System
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DOI：
10.1109/icrera47325.2019.8996775
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发表时间：
2019-11
期刊：
影响因子：
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通讯作者：
Garry Jean-Pierre;A. El Shafei;N. Altin;A. Nasiri
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文献类型：
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作者：
Garry Jean-Pierre;A. El Shafei;N. Altin;A. Nasiri
在集成光伏(PV)系统和储能系统(ESS)的并网应用中，双向LLC谐振转换器正变得越来越有吸引力。本文提出了一种适用于并网系统的多端口双向LLC谐振变流器。此外，在增量电导法的基础上提出了一种基于区域的最大功率点跟踪(MMPPT)控制方案，实现了对正向(放电模式)和反向(充电模式)的控制。该拓扑由一个用于电池系统的集成双向变流器、一个双向LLC谐振变流器、一个用于并网运行的电压型逆变器和光伏系统组成。利用MATLAB/SIMULINK对所提出的拓扑结构进行了建模，并在不同的运行条件下进行了验证。
Bidirectional LLC resonant converters are becoming increasingly more attractive in grid-connected applications with integrated photovoltaic (PV) systems and energy storage systems (ESS). In this study, a multiport bidirectional LLC resonant converter for grid-tied systems is proposed. In addition, a region based control schema with a modified maximum power point tracking (MMPPT) control derived from the incremental conductance method is introduced to control both the forward (discharge mode) and backward (charge mode) operation of the proposed converter. The proposed topology consists of an integrated bidirectional converter for the battery system, a bidirectional LLC resonant converter, a voltage source inverter for grid-tied operation and the PV system. The proposed topology is modelled with MATLAB/Simulink and validated for different operation conditions.