24脉冲整流器与ISOP-DAB相结合的直流供电系统解耦控制策略

2022 IEEE International Conference on Power Systems and Electrical Technology (PSET) Pub Date : 2022-10-13 DOI:10.1109/PSET56192.2022.10100473

Chenfa Shi, Zhiyuan Ding

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引用次数: 0

摘要

为了满足中压交流母线与低压直流母线之间大功率转换的需要，本文提出了24脉冲二极管整流器与ISOP-DAB变换器相结合的方案。然而，24脉冲二极管整流器引起的介质直流电压波动带来了输入电压的共享问题。针对输入电压不平衡问题，本文采用三闭环解耦控制策略，减轻输出电压环对输入电压共享环的影响。推导了ISOP-DAB的小信号分析和阻抗建模方法，并通过频扫描试验进行了验证。在电气参数不匹配和输入电压不平衡情况下的仿真试验中，保证了输入电压的共享效果。进一步分析了级联供电系统的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Decoupling Control Strategy of DC Power Supply System Combining 24-pulse Rectifier and ISOP-DAB

To meet the needs of the high-power conversion between the medium-voltage AC bus and the low-voltage DC bus, this paper presents the scheme combining a 24-pulse diode rectifier and the ISOP-DAB converter. However, the fluctuating medium DC voltage caused by the 24-pulse diode rectifier brings the potential input voltage sharing problem. To address the unbalanced input voltage issue, this paper adopts the triple-closed loop decoupling control strategy to mitigate the influence of the output voltage loop on the input voltage sharing loop. The smallsignal analysis and the impedance modeling of the ISOP-DAB are derived and verified by the frequency scanning test. The input voltage sharing effect is guaranteed in the simulation test under mismatched electrical parameters and unbalanced input voltage. Furthermore, the stability of the cascaded power supply system is analyzed.

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来源期刊

2022 IEEE International Conference on Power Systems and Electrical Technology (PSET)

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