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首页> 外文期刊>Power Electronics, IET >Zero circulating current modulation for isolated bidirectional dual-active-bridge DC–DC converter
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Zero circulating current modulation for isolated bidirectional dual-active-bridge DC–DC converter

机译：隔离双向双有源桥式DC-DC转换器的零循环电流调制

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摘要

In this study, a zero circulating current (ZCC) modulation technique is proposed for isolated bidirectional DC–DC converter (IBDC). The operating modes of the proposed modulation technique for the bidirectional dual active bridge DC–DC converter have been discussed and analysed. The proposed ZCC modulation not only reduces the current stress but it also eliminates the circulating power flow (CPF). In forward mode, the fixed 50% duty cycle and pulse width modulation signals are applied to the high voltage and low voltage bridges of IBDC converter, respectively. In reverse mode, the switching pattern is interchanged to reverse the power flow. The rising and falling edge phase-shift ratios are introduced for the two waveforms which help in identification of the ZCC switching. Condition on falling edge phase-shift ratio is determined to eliminate the CPF in the IBDC. This study also addresses the impact of the CPF on performance of the IBDC. The simulation and experimental results validate the proposed ZCC modulation for the IBDC.
机译：在这项研究中，提出了一种用于隔离双向DC-DC转换器（IBDC）的零循环电流（ZCC）调制技术。讨论并分析了双向双有源桥式DC-DC转换器的调制技术的工作模式。提出的ZCC调制不仅降低了电流应力，而且消除了循环功率流（CPF）。在正向模式下，固定的50％占空比和脉冲宽度调制信号分别施加到IBDC转换器的高压桥和低压桥。在反向模式下，交换模式可互换以反向潮流。针对两个波形引入了上升沿和下降沿相移比，这有助于识别ZCC开关。确定下降沿相移比的条件以消除IBDC中的CPF。这项研究还解决了CPF对IBDC绩效的影响。仿真和实验结果验证了针对IBDC提出的ZCC调制。

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