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首页> 外文期刊>IEEE Transactions on Industrial Electronics >A Transformerless DC–DC Modular Multilevel Converter for Hybrid Interconnections in HVDC
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A Transformerless DC–DC Modular Multilevel Converter for Hybrid Interconnections in HVDC

机译:用于HVDC中的混合互连变形式DC-DC模块化多电平转换器

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摘要

In this article, a modular multilevel dc-dc converter philosophy is proposed which can form an effective interlink to exchange power between line commutated converter (LCC) based high voltage direct current (HVdc) link and voltage source converter-based HVdc grid of same or different voltage levels. The converter exhibits symmetric four quadrant operation irrespective of the voltage polarity in the LCC-based HVdc link. In the event of reversal of power flow by reversing the voltage polarity in the LCC-based HVdc link, the power flow direction/magnitude through the interlink can be made to remain unchanged without the need of any extra switching arrangement. The working principle is explained analytically and its operation is validated by simulation as well as experimental results.
机译:在本文中,提出了一种模块化的多级DC-DC转换器理念,其可以形成基于线路换向转换器(LCC)的高压直流(HVDC)链路和基于电压源转换器的基于电压源转换器的HVDC网格之间的有效互通的互通链接。不同的电压电平。转换器无论基于LCC的HVDC链路中的电压极性都表现出对称的四象限操作。在通过在基于LCC的HVDC链路中的电压极性反转的情况下,可以使通过互连的电力流动方向/幅度保持不变,而不需要任何额外的切换装置。实际上解释了工作原理,其操作通过模拟和实验结果验证。

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