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Optimized Design of Full-Bridge Modular Multilevel Converter With Low Energy Storage Requirements for HVdc Transmission System

机译:储能要求低的HVdc输电系统全桥模块化多电平转换器的优化设计

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摘要

Modular multilevel converter (MMC) is a well-proved circuit topology in voltage-source converter-based high voltage direct current (VSC-HVdc) transmission systems. As is known, the conventional half-bridge submodule (HBSM)-based MMC-HVdc is not suitable for overhead line transmission applications. In addition, high energy storage requirements, i.e., large capacitance is inevitable. The conventional design of the full-bridge submodule (FBSM)-based MMC usually does not utilize the negative voltage state of FBSM in normal operation. Considering the same dc voltage as with the HBSM case and utilizing the negative voltage state of the FBSM, this paper presents the design method of the power transmission capability of a single FBSM. Meanwhile, an optimized energy storage capacitance design method of the FBSM is proposed. With this method, the capacitance of FBSM can be reduced significantly. The correctness and effectiveness of the proposed method is verified by the simulation of a ±160 kV VSC-HVdc MMC and the comparison results of the dc short fault blocking and ride through capability are also provided.
机译:模块化多电平转换器(MMC)是基于电压源转换器的高压直流(VSC-HVdc)传输系统中一种经过充分验证的电路拓扑。众所周知,传统的基于半桥子模块(HBSM)的MMC-HVdc不适合架空线传输应用。另外,不可避免的是高能量存储要求,即,大电容。基于全桥子模块(FBSM)的MMC的常规设计通常在正常操作中不利用FBSM的负电压状态。考虑到与HBSM情况相同的直流电压,并利用FBSM的负电压状态,本文介绍了单个FBSM的功率传输能力的设计方法。同时,提出了一种优化的FBSM储能电容设计方法。使用这种方法,可以大大减小FBSM的电容。通过对±160kV VSC-HVdc MMC的仿真验证了所提方法的正确性和有效性,并提供了直流短路故障闭锁和穿越能力的比较结果。

著录项

  • 来源
    《IEEE Transactions on Power Electronics》 |2018年第1期|97-109|共13页
  • 作者单位

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

    Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China;

  • 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

    Capacitance; Circuit faults; Capacitors; HVDC transmission; Energy storage; Topology;

    机译:电容;电路故障;电容器;高压直流输电;储能;拓扑;
  • 入库时间 2022-08-17 13:21:46

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