A High Efficiency Input/Output Magnetically Coupled Interleaved Buck–Boost Converter With Low Internal Oscillation for Fuel-Cell Applications: CCM Steady-State Analysis
A High Efficiency Input/Output Magnetically Coupled Interleaved Buck–Boost Converter With Low Internal Oscillation for Fuel-Cell Applications: CCM Steady-State Analysis
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DOI：
10.1109/tie.2015.2408560
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发表时间：
2015-03
影响因子：
7.7
通讯作者：
V. Samavatian;A. Radan
中科院分区：
文献类型：
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作者：
V. Samavatian;A. Radan
直流-直流变换器的性能在太阳能、燃料电池等可再生能源的开发中起着至关重要的作用。本文论证了采用输入/输出（I/O）磁耦合交错Buck-Boost变换器的可行性，改进了传统交错级联Buck-Boost变换器在FC应用中的性能。在保持相同的升压/降压电压传输比的情况下，该拓扑分别利用其非脉动I/O电流和使用交错技术的高效率以及降低开关管的电压应力来改善操作条件。基于状态空间平均法分析了变换器的稳态运行，并给出了仿真结果。Ballard Power Systems，Inc.“FCgen 1020 ACS”品牌FC的360 W和36 V输出电压原型设置。已经实施。实验结果验证了理论预期的转换器的优点，包括高效率和非脉动I/O电流。
The performance of dc-dc converters plays a vital role in the exploitation of renewable energy sources such as solar and fuel cell (FC). This paper demonstrates the feasibility of using the input/output (I/O) magnetically coupled interleaved buck-boost converter, improving the conventional interleaved cascaded buck-boost converter in FC applications. While keeping the same step-up/step-down voltage transfer ratio, the proposed topology facilitates operating conditions with its nonpulsating I/O currents and high efficiency using interleaved technique and reducing switches' voltage stresses, respectively. The steady-state operation of the converter is analyzed based on the state-space-averaging method and supported with simulation results. The prototype setup of 360-W and 36-V output voltage for an FC with a brand of “FCgen 1020ACS” Ballard Power Systems, Inc. was implemented. Experimental results are presented to verify the theoretical expected merits of the converter, including high efficiency and nonpulsating I/O currents.