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具有共享桥臂的单相变换器及其推广

Single-Phase Converter With Shared Leg and Generalizations

语言:

中文摘要

本文提出了一种具有共享桥臂的单相变换器及其两种推广形式。该基本配置包含三个两电平IGBT桥臂,通过两个注入变压器级联在主电力系统上,其中一个桥臂在变压器间实现共享。文中进一步扩展了该拓扑,使其能够推广至N个桥臂的结构。

English Abstract

In this paper, a single-phase shared leg converter is proposed along with two generalizations. The basic configuration has three two-level insulated gate bipolar transistor (IGBT) legs and is cascaded on the main power system by means of two injection transformers, such that one of these legs is shared between the transformers. The generalizations are expanded cases in which the converter has Nleg...
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阳光知情 深度解读

该研究提出的共享桥臂拓扑通过减少功率模块数量优化了系统成本与体积,对阳光电源的户用光伏逆变器及小型储能PCS产品具有一定的参考价值。在追求高功率密度和低成本的户用市场,通过变压器耦合实现桥臂共享的思路可作为降低硬件冗余的备选方案。然而,由于引入了注入变压器,需重点评估其对系统效率、磁性元件体积及电磁兼容性(EMC)的影响。建议研发团队关注该拓扑在多端口能量转换场景下的应用潜力,特别是针对需要电气隔离的微型逆变器或小型储能系统进行可行性仿真验证。