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用于配电网多分布式能源与直流负载中压直流接入接口的多端口直流固态变压器

A Multiport DC Solid-State Transformer for MVDC Integration Interface of Multiple Distributed Energy Sources and DC Loads in Distribution Network

语言:

中文摘要

本文针对传统直流配电网中光伏、储能及直流负载通过多级变换器接入LVdc母线导致缺乏电气隔离及转换效率低的问题,提出了一种多端口直流固态变压器(SST)方案。该方案通过高频隔离实现多能源的高效集成,简化了系统架构,提升了配电网的灵活性与可靠性。

English Abstract

In the traditional dc distribution networks with both a low-voltage dc (LVdc) and a medium-voltage dc (MVdc) bus, dc units, such as photovoltaics solar, storage devices, and dc loads, are connected to the LVdc bus through LVdc converters, such as dc/dc boost converters and bidirectional buck–boost dc/dc converters. In this approach, no galvanic isolation is provided and two power conversion stages...
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SunView 深度解读

该技术对阳光电源的PowerTitan系列液冷储能系统及工商业光伏并网方案具有重要参考价值。随着配电网向直流化演进,多端口固态变压器技术可优化光储一体化系统的拓扑结构,减少功率变换级数,从而提升系统整体效率与功率密度。建议研发团队关注该拓扑在高压直流接入场景下的应用,特别是如何通过高频隔离技术提升储能PCS的安全性与电网适应性,以支撑阳光电源在微电网及大型储能电站领域的差异化竞争优势。