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基于公共高频母线的级联多电平固态变压器及其纹波与不平衡功率解耦通道

Common High-Frequency Bus-Based Cascaded Multilevel Solid-State Transformer With Ripple and Unbalance Power Decoupling Channel

语言:

中文摘要

本文提出了一种新型三端口级联多电平固态变压器(CM-SST)。该拓扑基于通过高频链路(HFL)互联的模块化多电平变换器子模块,形成了解耦通道及低压直流端口。公共高频母线设计通过复用技术有效减少了二次侧全桥的数量,并实现了纹波与不平衡功率的解耦控制。

English Abstract

A novel three-port cascaded multilevel solid-state transformer (CM-SST) is proposed in this article, which is based on modular multilevel converter submodules (SM) interconnected by high-frequency link (HFL), forming a decoupling channel to SMs and a low-voltage dc port. The common high-frequency bus in HFL helps to reduce the numbers of secondary full bridges in the form of multiplexing. The deco...
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SunView 深度解读

该技术在多端口能量变换与功率解耦方面的创新,对阳光电源的PowerTitan系列大型储能系统及高压光伏并网技术具有重要参考价值。其公共高频母线设计有助于提升功率密度并降低变换器复杂性,特别是在处理储能系统多支路功率不平衡问题时,该拓扑提供的解耦通道能有效优化系统效率。建议研发团队关注该拓扑在兆瓦级储能变流器(PCS)中的应用潜力,以进一步提升系统在复杂电网环境下的稳定性和模块化集成度。