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首页> 外文期刊>Renewable Power Generation, IET >New hybrid-microgrid topology using a bidirectional interleaved converter as a robust power interface operating in grid-connected and islanded modes
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New hybrid-microgrid topology using a bidirectional interleaved converter as a robust power interface operating in grid-connected and islanded modes

机译：使用双向交错转换器作为在电网连接和孤岛模式下运行的强大电源接口的新型混合微电网拓扑

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摘要

This study presents a new microgrid topology that uses a bidirectional interleaved converter performing a power interface between DC buses in a hybrid microgrid allowing for both grid-connected and islanded modes. The authors propose a new control strategy and controllers' design method aiming at achieving a high-performance dynamic response regarding the converter load and generation disturbance rejection capability. In the grid-connected mode, the interleaved converter operates in the buck mode providing a high-power-quality DC microgrid voltage. In the islanded mode, the interleaved converter operates in the boost mode and it is responsible for regulating the DC link of the back-to-back converter that connects the main grid to the AC microgrid. A detailed mathematical model is presented to obtain a MIMO system that takes into account the system's disturbances to analyze both stability margins and disturbance-rejection response. Simulations of the proposed topology are carried out in PSCAD/EMTDC in a microgrid operating in grid-connected and islanded operation modes. Experimental results are provided in order to validate the proposed control tuning method.
机译：这项研究提出了一种新的微电网拓扑，该拓扑使用双向交错转换器在混合微电网中的直流母线之间执行电源接口，从而允许并网和孤岛两种模式。作者提出了一种新的控制策略和控制器的设计方法，旨在实现有关转换器负载和发电干扰抑制能力的高性能动态响应。在并网模式下，交错转换器在降压模式下工作，可提供高功率质量的直流微电网电压。在孤岛模式下，交错式转换器在升压模式下运行，它负责调节将主电网连接到交流微电网的背靠背转换器的直流母线。提出了一个详细的数学模型来获得MIMO系统，该系统考虑了系统的干扰，以分析稳定性裕量和干扰抑制响应。在PSCAD / EMTDC中以并网和孤岛运行模式运行的微电网中，对拟议拓扑进行了仿真。提供实验结果以验证所提出的控制调整方法。

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