DAB变换器接入的低压交直流混合配电系统直流侧冲击电流解析计算方法

柯海珊; 邓卫; 裴玮; 李洪涛; 温伟杰

doi:10.19912/j.0254-0096.tynxb.2024-2170

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (4) : 82-91. DOI: 10.19912/j.0254-0096.tynxb.2024-2170

DAB变换器接入的低压交直流混合配电系统直流侧冲击电流解析计算方法

柯海珊^1,2, 邓卫^1,2, 裴玮^1,2, 李洪涛³, 温伟杰⁴

作者信息 +

ANALYSIS AND CALCULATION METHOD OF DC IMPULSE CURRENT IN LOW VOLTAGE AC-DC HYBRID DISTRIBUTION SYSTEM CONNECTED BY DAB CONVERTER

Ke Haishan^1,2, Deng Wei^1,2, Pei Wei^1,2, Li Hongtao³, Wen Weijie⁴

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文章历史 +

摘要

针对双有源桥（DAB）接入低压交直流混合配电系统时的直流侧冲击电流问题,将DAB接入的低压交直流混合配电系统作为研究对象,首先分析DAB接入下的低压交直流混合配电系统电路结构与控制方式,接着基于系统等效电路模型,提出直流侧冲击电流计算方法。针对分布式电源通过DAB接入和直流母线双极短路故障等典型工况,建立直流侧冲击电流的时域解析式,然后通过仿真对所提计算方法的准确性进行验证,并根据解析式和仿真结果分析直流侧冲击电流的暂态特性和相关影响因素。

Abstract

This paper addresses the DC-side impulse current caused by the integration of a dual active bridge （DAB） into low-voltage AC/DC hybrid distribution systems. A low-voltage AC/DC hybrid distribution system with DAB-based interfacing is considered. The circuit structure and control scheme under DAB integration are firstly analyzed. Based on the equivalent circuit model, a calculation method for the DC-side impules current is then developed. Typical operating conditions are investigated, including distributed generation interfaced through the DAB and bipolar short-circuit faults on the DC bus. Time-domain analytical expressions of the DC-side impules current are derived. The accuracy of the proposed method is validated through simulations. The transient characteristics of the DC-side impulse current and the influencing factors are further analyzed using the analytical results and simulation data.

导出引用

柯海珊, 邓卫, 裴玮, 李洪涛, 温伟杰. DAB变换器接入的低压交直流混合配电系统直流侧冲击电流解析计算方法[J]. 太阳能学报. 2026, 47(4): 82-91 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2170

Ke Haishan, Deng Wei, Pei Wei, Li Hongtao, Wen Weijie. ANALYSIS AND CALCULATION METHOD OF DC IMPULSE CURRENT IN LOW VOLTAGE AC-DC HYBRID DISTRIBUTION SYSTEM CONNECTED BY DAB CONVERTER[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 82-91 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2170

中图分类号： TM726

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