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首页> 外文会议>International Power Electronics, Drive Systems and Technologies Conference >Controller Design of Paralleled Quasi-Z-Source Inverters with Battery for Application in Grid-Connected Photovoltaic Power Generation System
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Controller Design of Paralleled Quasi-Z-Source Inverters with Battery for Application in Grid-Connected Photovoltaic Power Generation System

机译：带电池并联准Z源逆变器控制器设计在光伏发电系统中的应用

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摘要

In this paper, a new control method for the paralleled quasi-Z-source inverters (qZSI) with a battery for application in grid-connected photovoltaic (PV) power generation systems is proposed. The use of paralleled inverters in distributed generation (DG) applications has several advantages, such as high degree of redundancy, ease of maintenance and high reliability. By introducing the shoot-through states in the permissible switching states of the inverter bridge, the qZSI can boost/buck the output voltage of PV panel in a wide range. Also, the energy storage system, which is assisted with quasi Z-source network, provides the full use possibility of PV power. The proposed control method can manage the battery power, extract the maximum power from the PV panel, control the inverters output power with desired power factor and maintain the balance of power injected by the paralleled inverters into the grid, simultaneously. Also, the controller system is able to suppress both types of circulating-current, including cross and zero-sequence circulating-currents through a modification of the conventional control schemes. The ability of the proposed PV system is investigated by simulation results carried out using MATLAB/Simulink.
机译：本文提出了一种新的带电池的并联准Z源逆变器（qZSI）控制方法，用于光伏发电系统。在分布式发电（DG）应用中使用并行逆变器具有多个优势，例如，高度的冗余度，易于维护和高可靠性。通过在逆变器桥的允许开关状态中引入直通状态，qZSI可以在很宽的范围内提高/降低光伏面板的输出电压。同样，借助准Z源网络辅助的储能系统提供了PV电源的充分利用可能性。所提出的控制方法可以管理电池电量，从光伏面板提取最大电量，以期望的功率因数控制逆变器输出功率，并同时保持并联逆变器向电网注入的功率平衡。而且，控制器系统能够通过对常规控制方案的修改来抑制两种类型的循环电流，包括交叉和零序循环电流。通过使用MATLAB / Simulink进行的仿真结果研究了拟议的光伏系统的功能。

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