High-frequency bidirectional dual-bridge series-resonant dc–dc converters have been attracted more attention in power electronic transformer (PET) due to high power density and efficiency. In this article, a model predictive power control method with phase shift modulation is proposed, to improve the dynamic response and robustness of the converter without load current sensor. In addition, the proposed method is insensitive to the resonant parameters in the adopted converter and can keep excellent dynamic characteristics even if the resonant parameter deviates from the desired operating point, which indicates good robustness. Effectiveness of the proposed control is verified on a 400-W scale-down experimental prototype with resistance load and inverter load, respectively. Compared with traditional voltage loop control and model predictive voltage control schemes, the proposed scheme can achieve a faster dynamic response of the output voltage in load and input voltage step change.

中文翻译：

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机车牵引系统中具有快速动态响应的双向串联谐振隔离DC-DC转换器的模型预测功率控制

由于高功率密度和效率，高频双向双桥串联谐振 DC-DC 转换器在电力电子变压器 (PET) 中受到了更多关注。本文提出了一种带相移调制的模型预测功率控制方法，以提高无负载电流传感器的转换器的动态响应和鲁棒性。此外，所提出的方法对采用的转换器中的谐振参数不敏感，即使谐振参数偏离所需的工作点也能保持良好的动态特性，这表明具有良好的鲁棒性。所提出的控制的有效性分别在具有电阻负载和逆变器负载的 400 W 缩小实验原型上得到验证。