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首页> 外文期刊>Power Electronics, IEEE Transactions on >Control Scheme for Photovoltaic Three-Phase Inverters to Minimize Peak Currents During Unbalanced Grid-Voltage Sags
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Control Scheme for Photovoltaic Three-Phase Inverters to Minimize Peak Currents During Unbalanced Grid-Voltage Sags

机译:光伏三相逆变器的控制方案,以在不平衡电网电压凹陷期间最大程度地降低峰值电流

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摘要

Nowadays, the majority of the photovoltaic (PV) power sources are connected to the public grid. One of the main connection problems occurs when voltage sags appear in the grid due to short circuits, lightning, etc. International standards regulate the grid connection of PV systems, forcing the source to remain connected during short-time grid-voltage faults. As a consequence, during the voltage sag, the source should operate with increasing converter currents to maintain the injection of the generated power. This abnormal operation may result in nondesired system disconnections due to overcurrents. This paper proposes a controller for a PV three-phase inverter that ensures minimum peak values in the grid-injected currents, as compared with conventional controllers. From the system analysis, a design method is presented in order to set the parameters of the control scheme. Selected experimental results are reported in order to validate the effectiveness of the proposed control.
机译:如今,大多数光伏(PV)电源已连接到公共电网。当由于短路,雷电等原因在电网中出现电压骤降时,就会出现主要的连接问题之一。国际标准对光伏系统的电网连接进行了规定,迫使电源在短期电网电压故障期间保持连接状态。结果,在电压骤降期间,电源应在转换器电流增加的情况下工作,以保持所产生功率的注入。这种异常操作可能会由于过电流而导致系统断开连接。本文提出了一种用于光伏三相逆变器的控制器,与传统控制器相比,该控制器可确保并网电流中的最小峰值。通过系统分析,提出一种设计方法以设置控制方案的参数。报告了选定的实验结果,以验证所提出控制的有效性。

著录项

  • 来源
    《Power Electronics, IEEE Transactions on》 |2012年第10期|p.4262-4271|共10页
  • 作者

    Miret J.;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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