直流侧共直流母线的电压暂降治理研究

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关键词：电压暂降；电压不平衡治理；共直流母线；功率转移；动态治理

中图分类号：TM77 文献标志码：A 文章编号：1003-5168（2025）22-0005-05

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.22.001

Research on Voltage Sag Mitigation for Common DC Bus on the DC Side

HUANG Shipeng CHEN Riyao LIU NanWANG Qipeng WANGGuixua1 （Liaoning Rongxin Power Electronics Technology Co.，Ltd.，Anshan ， China）

Abstract： [Purposes] To address the issue of voltage sags in modern power systems，a voltage sag mitigation device on the DC side with acommon DC bus （Dynamic Voltage Restorer， DVR） was studied in depth.[Methods] The working principle of the device is elaborated，key points such as its hardware design and control strategy are analyzed，and the device's performance is verified through simulation experiments and practical cases.[Findings] Mitigating voltage sags on the DC side common DC bus requires a comprehensive approach involving hardware redundancy，intelligent control，and economic assessment. The targets of limiting the sag amplitude suppression to within 5% and achieving millisecondlevel response speed have been met; however，its robustness in complex scenarios and long-term economic viability still require further verification.[Conclusions] The research results indicate that the designed common DC bus voltage sag mitigation device can effectively suppress voltage sags，enhance power supply reliability，and provide strong support for the stable operation of the power supply system.

Keywords： voltage sag; voltage imbalance mitigation; common DC bus; power transfer; dynamic mitigation

0 引言

负荷、半导体制造设备等工业负荷的正常工作，传统DVR多采用独立直流母线结构，存在成本高、体积大、能量利用率低等缺点。（剩余5186字）