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首页> 外文期刊>Transportation Electrification, IEEE Transactions on >A Simple Power Estimation With Triple Phase-Shift Control for the Output Parallel DAB DC–DC Converters in Power Electronic Traction Transformer for Railway Locomotive Application
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A Simple Power Estimation With Triple Phase-Shift Control for the Output Parallel DAB DC–DC Converters in Power Electronic Traction Transformer for Railway Locomotive Application

机译：用于铁路机车应用的电力电子牵引变压器中输出并联DC-DC转换器的输出平行DC-DC转换器的三相换档控制简单功率估计

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摘要

Aimed at the input-independence and output-parallel dual-active-bridge (DAB) dc-dc converters applied to power electronic traction transformer (PETT), this paper proposes a simple power estimation scheme with triple phase-shift control (PES-TPS) to achieve the transmission power balance, dynamic performance improvement, and efficiency optimization, simultaneously. Through executing the current stress optimization (CSO) and introducing the power estimation based on operational parameters, the efficiency of converters can be further improved and the power balance among DAB cells can be achieved over the whole power range without adding extra sensors to sample the output/inductor current of each cell. In addition, the dynamic performance of the adopted converters can he improved by compensating power loss online. Especially, dynamic response of the output voltage can be enhanced under input voltage and load fluctuation conditions. Finally, a comprehensive experimental comparison of CSO with dual phase shift (CSO-DPS), CSO with TPS (CSO-TPS), and the proposed PES-TPS control is conducted in the DAB converters experimental prototype with three cells. The experimental results have confirmed the excellent performance of the proposed PES-TPS control and the correctness of the theoretical analysis.
机译：旨在输入独立和输出平行双极 - 桥（DAB）DC-DC转换器应用于电力电子牵引变压器（PETT），提出了一种简单的功率估算方案，具有三相换档控制（PES-TPS ）同时实现传输功率平衡，动态性能提高和效率优化。通过执行当前应力优化（CSO）并引入基于操作参数的功率估计，可以进一步提高转换器的效率，并且可以在整个功率范围内实现DAB单元格之间的功率平衡，而无需添加额外的传感器以对输出进行采样。 /每个单元的电感电流。此外，采用转换器的动态性能可以通过在线补偿功率损耗来改善。特别地，在输入电压和负载波动条件下可以增强输出电压的动态响应。最后，使用三种细胞的DAB转换器实验原型进行了具有TPS（CSO-TPS）和提出的PES-TPS控制的CSO与双相移（CSO-DPS）的综合实验比较。实验结果证实了所提出的PES-TPS控制的优异性能和理论分析的正确性。

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