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拓扑与电路 DAB 双向DC-DC 多电平 储能变流器PCS ★ 4.0

用于中压直流配电网的具有交错Buck集成和宽电压范围的分支共享模块化多电平直流变压器

Branch-Sharing Modular Multilevel DC Transformer With Interleaved Buck-Integrated and Wide Voltage Range for MVDC Distribution Grids

语言:

中文摘要

本文提出了一种结合双有源桥(DAB)特性的交错Buck集成分支共享模块化多电平直流变压器(DCT)。该结构在中压直流(MVDC)侧采用分支共享模块化多电平变换器,作为DAB的原边;低压直流侧则采用交错结构,实现了宽电压范围下的高效功率变换。

English Abstract

In this article, an interleaved buck-integrated branch-sharing modular multilevel dc transformer (DCT) combining the features of the dual-active-bridge (DAB) converter is proposed. The branch-sharing modular multilevel converter structure is adopted on the medium-voltage dc (MVDC) side, which can be thought of as the primary side of DAB. While on the low-voltage dc side, there is only an interleav...
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SunView 深度解读

该拓扑结构在MVDC侧采用模块化多电平技术,在低压侧集成交错Buck,非常契合阳光电源PowerTitan系列大功率储能系统及中压直流接入场景的需求。其宽电压范围特性有助于提升储能系统在电池电压波动时的效率与灵活性。建议研发团队关注该拓扑在降低系统损耗及提高功率密度方面的潜力,可将其作为下一代高压储能变流器(PCS)或直流配电接口的技术储备,以应对未来光储直柔及大规模储能电站对高压直流接入的更高要求。