基于扩展移相控制下双有源桥移相角优化选取与分析

doi:10.19595/j.cnki.1000-6753.tces.190012

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摘要双有源桥(DAB)采用扩展移相(EPS)控制时,在同一传输功率下存在移相角的多种不确定组合。合适的移相角选取不仅是确保DAB满足功率传输要求的前提,同时也是降低回流功率、减小电流应力的重要保障。基于此,首先,提出了一种EPS控制下的DAB移相角优化选取方法,所建立的传输功率表达式可以降低传输功率特性的分析难度和计算复杂度;其次,在综合考虑回流功率与电流应力优化的前提下,可以进一步明确移相角的选取范围;最后,仿真与实验验证了理论分析的正确性。

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关键词 ：双有源桥, 扩展移相控制, 移相角, 回流功率, 电流应力

Abstract：When dual active bridge(DAB) adopts extended phase shift(EPS) control, there are multiple combinations of phase shift angles under the same transmission power. Selecting proper phase shift angles is not only the prerequisite to ensure that DAB meets the power transmission requirements, but also an important guarantee to reduce the backflow power and the current stress. Based on this, a DAB phase shift angles optimized selection method under EPS control is proposed in this paper, which simplifies the analysis of transmission power characteristics and reduces the computational complexity. Secondly, the selection range of phase shift angle is further clarified on the premise of considering backflow power and current stress optimization. Finally, simulation and experiment verify the correctness of the theoretical analysis.

Key words： Dual active bridge(DAB) extended phase shift(EPS) control phase shift angle backflow power circuit stress

收稿日期: 2019-01-03 出版日期: 2020-02-28

PACS:

TM46

基金资助:国家重点研发计划项目资助(2018YFB0904101)

通讯作者: 管亮男,1995年生,硕士研究生,研究方向为直流变换器。E-mail: 472722922@qq.com

作者简介: 涂春鸣男,1976年生,教授,博士生导师,研究方向为电力电子在电力系统中的应用、智能配电网、分布式能源与微电网等。

引用本文:

涂春鸣, 管亮, 肖凡, 周达. 基于扩展移相控制下双有源桥移相角优化选取与分析[J]. 电工技术学报, 2020, 35(4): 850-861. Tu Chunming, Guan Liang, Xiao Fan, Zhou Da. Parameter Optimization Selection and Analysis of Dual Active Bridge Based on Extended Phase Shift Control. Transactions of China Electrotechnical Society, 2020, 35(4): 850-861.

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