最优切换顺序对DAB变换器轻载效率的提高

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Electronics Pub Date : 2024-12-09 DOI:10.1109/TPEL.2024.3513412

Ziheng Xiao;Muxuan Xiao;Zhixing He;Liang Wang;Zongjian Li;Hongliang Wang

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引用次数: 0

摘要

本文介绍了一种通过优化开关顺序使双有源桥式变换器的功率损耗最小化以提高其轻载效率的方法。使用综合功率损耗计算方法确定各种运行条件下的峰值效率点。利用单相移相调制和梯形电流调制模式，通过迭代算法确定在不同工作条件下给定峰值电感电流下第一、重复和最终开关脉冲的最优开关顺序。该控制方法的综合状态机图显示了连续模式和突发模式的无缝集成，以提高效率。1 kW样机的实验波形、效率曲线和功率损耗击穿图表明，该方法明显优于连续工作模式，以及传统和先进的突发模式，将轻载效率从60%以下提高到85%以上。

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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Light Load Efficiency Improvement of DAB Converters With Optimal Switching Sequences

This article introduces a method to enhance the light load efficiency of dual active bridge converters through power loss minimization via optimal switching sequences. Peak efficiency points for various operational conditions are identified using a comprehensive power loss calculation approach. Single phase shift modulation and trapezoidal current modulation modes are utilized, and an iterative algorithm determines the optimal switching sequence for the first, repeating, and final switching pulses under a given peak inductor current in various operating condition. The comprehensive state machine diagram of the proposed control method demonstrates seamless integration of both continuous and burst modes for efficiency improvement. Experimental waveforms, efficiency curves, and power loss breakdown diagrams from a 1 kW prototype demonstrate that the proposed method significantly outperforms continuous operation mode, as well as conventional and advanced burst modes, increasing light load efficiency from below 60% to above 85%.

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来源期刊

IEEE Transactions on Power Electronics 工程技术-工程：电子与电气

CiteScore

15.20

自引率

20.90%

发文量

1099

审稿时长

3 months

期刊介绍： The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.