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高压与中压直流电网中模块化多电平直流变换器与双有源桥变换器的对比研究

Comparison of the Modular Multilevel DC Converter and the Dual-Active Bridge Converter for Power Conversion in HVDC and MVDC Grids

语言:

中文摘要

随着可再生能源发电占比提升及分布式电源在配电网的应用,高压(HVDC)与中压(MVDC)直流输配电技术日益重要。本文对比分析了模块化多电平直流变换器(MMC)与双有源桥(DAB)变换器在直流电网功率转换中的性能表现,探讨了其在不同电压等级下的适用性与技术挑战。

English Abstract

It is expected that in the near future the use of high-voltage dc (HVDC) transmission and medium-voltage dc (MVDC) distribution technology will expand. This development is driven by the growing share of electrical power generation by renewable energy sources that are located far from load centers and the increased use of distributed power generators in the distribution grid. Power converters that ...
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SunView 深度解读

该研究对比的MMC与DAB拓扑是高压直流输电及大功率储能变换的核心技术。对于阳光电源的PowerTitan及PowerStack系列储能系统,DAB拓扑在双向DC-DC变换中具有高效率与高功率密度的优势。随着光储电站向更高电压等级(如1500V及以上)演进,研究MMC技术有助于提升公司在大型储能电站及直流微网解决方案中的竞争力。建议研发团队关注MMC在高压直流侧的模块化设计,以优化大容量储能系统的并网性能与系统效率。