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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Modular High-Power DC–DC Converter for MVDC Renewable Energy Collection Systems
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Modular High-Power DC–DC Converter for MVDC Renewable Energy Collection Systems

机译：用于MVDC可再生能量收集系统的模块化大功率DC-DC转换器

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摘要

Medium-voltage (MV) dc collection system is a promising solution for future integration of large-scale renewables at remote places. This requires a high-power dc-dc converter to step up the voltage and connect with the high voltage direct current transmission line. In this article, a novel modular high-power dc-dc converter is proposed, with the combination of half-bridge and full-bridge submodules (SMs), as well as thyristors and diodes. It alternatively configures the SMs into parallel connection with the MV side to effectively share high current stress while series connection with the high voltage side to share the high voltage stress. It presents attractive features such as high device utilization rate, low cost, high step-up ratio, high efficiency, and small footprint. The circuit structure, operation principle, and the control schemes are discussed. Simulation results demonstrate the effectiveness, and the experimental results from a scaled down prototype further prove the proposed concept.
机译：中电压（MV）直流收集系统是一个有助于解决偏远地区的大型可再生能源的解决方案。这需要高功率DC-DC转换器来加强电压并与高压直流传输线连接。在本文中，提出了一种新型模块化大功率DC-DC转换器，具有半桥和全桥柱（SMS）以及晶闸管和二极管的组合。或者，将SMS配置为与MV侧的并联连接，以有效地共享高电流应力，同时与高压侧串联连接以共享高压应力。它提出了有吸引力的功能，如高设备利用率，低成本，高升高比，高效率和小占地面积。讨论了电路结构，操作原理和控制方案。仿真结果证明了效果，并且缩小的原型的实验结果进一步证明了所提出的概念。

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