Code underlying the publication: High Accuracy Generalized Average Model of Dual Active Bridge Converters

The primary objective of this research is to develop and validate a generalized average model (GAM) of a dual active bridge (DAB) converter that incorporates higher-order harmonic components and considers a non-unity turn ratio of the high-frequency transformer. This aims to achieve a more accurate and realistic modeling and reconstruction of the transformer current of the DAB converter.<br><strong>GAM.zip</strong> consists of two MATLAB codes:<br>Fourier coefficient verification script for switching functions: <strong>Fourier_Coefficient_Verification.m</strong><br>Code to reconstruct the switching functions of the DAB converter operating in Single Phase Shift Modulation (SPS). The accuracy of the reconstructed switching functions can be tuned by changing the order of harmonics to be considered during the reconstruction.<br>Generalized average model of DAB converter considering the contribution up to and including 9th harmonics: <strong>9_th_Harmonic_GAM_model.m</strong><br>Code that provides the improved GAM model of a DAB converter, considering the contribution up to and including 9th harmonics, proposed in the referenced publication.<br>Both MATLAB codes have been explained properly with in-line comments.<br>No data has been collected from an external source for this research. The MATLAB codes are created based on the proposed modeling procedure within the referenced publication. They are mathematical and based on a user-defined example.<br><strong>For more details, please refer:</strong>R. S. Deshmukh, P. Bauer and H. Vahedi, "High-Accuracy Generalized Average Model of Dual Active Bridge Converters," in <em>IEEE Open Journal of Power Electronics</em>, vol. 5, pp. 452-460, 2024

本研究的核心目标为开发并验证一款包含高阶谐波分量、且考虑高频变压器非单位变比的双有源桥（Dual Active Bridge, DAB）变换器广义平均模型（Generalized Average Model, GAM），以期实现对DAB变换器变压器电流更精准、更贴合实际的建模与重构。<br><strong>GAM.zip</strong> 包含两份MATLAB代码：<br>1. 开关函数傅里叶系数验证脚本：<strong>Fourier_Coefficient_Verification.m</strong><br>2. 改进型双有源桥变换器广义平均模型代码：<strong>9_th_Harmonic_GAM_model.m</strong>。该代码可实现单相移调制（Single Phase Shift Modulation, SPS）下DAB变换器开关函数的重构，可通过调整重构阶段需纳入考量的谐波阶数调节重构精度；同时该代码实现了参考文献中提出的考虑至9次谐波（含9次）谐波贡献的改进型GAM模型。<br>两份MATLAB代码均已通过行内注释进行了详尽说明。<br>本研究未从外部数据源采集任何数据，所有MATLAB代码均基于参考文献中提出的建模流程编写，属于基于用户自定义示例的数学模型代码。<br><strong>如需了解更多细节，请参阅：</strong>R. S. Deshmukh、P. Bauer 与 H. Vahedi 发表于《IEEE Open Journal of Power Electronics》2024年第5卷第452-460页的论文"High-Accuracy Generalized Average Model of Dual Active Bridge Converters"。