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首页> 外文期刊>IEEE Transactions on Energy Conversion >A Novel Dynamic Switching Table Based Direct Power Control Strategy for Grid Connected Converters
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A Novel Dynamic Switching Table Based Direct Power Control Strategy for Grid Connected Converters

机译：基于新型动态切换表的并网逆变器直接功率控制策略

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摘要

Direct power control (DPC) has gained much attention for medium-voltage applications due to its fast power control capability. However, a conventional static switching table based DPC can lead to unsatisfactory response when the converter is connected to an electric grid because it is commonly designed assuming ideal and constant voltages of the grid and the dc link. Therefore, the actual grid voltage and the actual converter dc-link voltage should be considered while designing the switching table. This paper proposes a novel dynamic switching table for the DPC, considering actual grid and dc-link voltages variation. The proposed dynamic switching table incorporates a new definition of power influence crossover angles of each converter space vector. The proposed scheme dynamically adapts the switching table by feeding forward the actual grid and dc-link voltages, and hence the converter's power is precisely controlled. The proposed technique is verified for the three-level neutral point clamped converters connected to a standard IEEE 9-bus test system. Moreover, the real-time simulations are performed in a real-time digital simulator, OPAL-RT. The obtained results verified the effectiveness of the proposed DPC strategy under different grid fault scenarios.
机译：直接电源控制（DPC）由于具有快速的电源控制能力而在中压应用中引起了广泛关注。但是，当转换器连接到电网时，基于常规静态切换表的DPC可能会导致响应不令人满意，因为通常将其设计为假设电网和直流链路的电压为理想且恒定。因此，在设计开关表时应考虑实际电网电压和实际转换器直流母线电压。考虑到实际的电网和直流母线电压变化，本文提出了一种新颖的DPC动态切换表。提出的动态切换表结合了每个转换器空间矢量的功率影响交叉角的新定义。所提出的方案通过前馈实际的电网电压和直流链路电压来动态地适应开关表，因此可以精确地控制转换器的功率。对于连接到标准IEEE 9总线测试系统的三级中性点钳位转换器，该提出的技术得到了验证。此外，实时仿真是在实时数字仿真器OPAL-RT中执行的。获得的结果证明了在不同电网故障情况下提出的DPC策略的有效性。

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  • 来源
    《IEEE Transactions on Energy Conversion》 |2018年第3期|1086-1097|共12页
  • 作者

    Hany A. Hamed; Ahmed F. Abdou; Samrat Acharya; Mohamed Shawky El Moursi; E. E. EL-Kholy;

  • 作者单位

    Department of Electrical and Automation Engineering, Emirates Steel, Abu Dhabi, United Arab Emirates;

    Visiting Fellow at the School of Engineering and Information Technology, University of New South Wales, Canberra, Australia;

    Department of Electrical Engineering and Computer Science, Masdar Institute, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates;

    Department of Electrical Engineering and Computer Science, Masdar Institute, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates;

    Department of Electrical Engineering, Faculty of Engineering, Menoufia University, Shebin El-Koum, Egypt;

  • 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

    Switches; Reactive power; Power control; Topology; Fluctuations; Voltage control; Real-time systems;

    机译：开关;无功功率;功率控制;拓扑;波动;电压控制;实时系统;

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