Duty-cycle plus phase-shift control for a dual active half bridge based bipolar DC microgrid
Duty-cycle plus phase-shift control for a dual active half bridge based bipolar DC microgrid
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DOI：
10.1109/apec.2018.8341212
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发表时间：
2018-03
期刊：
影响因子：
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通讯作者：
Fei Gao;Daniel J. Rogers
中科院分区：
文献类型：
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作者：
Fei Gao;Daniel J. Rogers
本文研究了双有源半桥用于实现灵活（对称或不对称）双极性直流输出。该电路采用组合占空比和相移控制来运行，以提供电压分流功能，而不需要额外的电压平衡电路。这种拓扑结构减少了实现具有电流隔离的灵活双向直流双极输出所需的组件数量，并且在低成本双极直流微电网中具有潜在的应用。根据占空比和相移比的关系，分析了六种不同的工作情况并推导出相应的功率传输。使用实验室原型，通过实验测试进一步验证了这种双有源半桥转换器的性能。
This paper studies the dual active half bridge when used to achieve flexible (symmetric or asymmetric) bipolar DC output. The circuit is operated with combined duty-cycle and phase-shift control to provide voltage splitting functionality without the requirement for an additional voltage balancing circuit. This topology uses reduced number of components needed to achieve the flexible bidirectional DC bipolar output with galvanic isolation, and has potential applications in low-cost bipolar DC microgrids. Depending on the relationship of the duty cycle and phase shift ratio, six different working cases are analyzed and corresponding power transfer is derived. Using a laboratory prototype, the performance of this dual active half bridge converter was further validated by experimental tests.