适用于直流微电网的开关电容接入式双主动移相变换器

发布时间：2018-05-27 14:20

本文选题：直流微电网 + 隔离型双向DC-DC变换器　；参考：《中国电机工程学报》2017年17期

【摘要】：提出了一种适用于直流微电网的开关电容接入式双主动移相变换器的拓扑结构,当变换器的高低压侧直流电压之比与高频变压器的物理变比不匹配时,通过增加高压侧全桥的直通状态,可以实现高频链环节的电压匹配,具有简单且易实现的优点。另外,当发生直流侧的短路故障时,可以实现直流开关功能,快速切除故障并且在故障消失后可以快速恢复运行,提高了系统的可靠性。对所提拓扑结构的电压电流特性、换流行为和控制策略进行了分析,在此基础上,分别通过仿真分析和实际样机的物理试验验证了所提拓扑的正确性和实用性。
[Abstract]:In this paper, a topology of switched capacitor access dual active phase shift converter for DC microgrid is proposed. When the ratio of high and low voltage DC voltage of the converter does not match the physical change ratio of high frequency transformer, By adding the straight state of the whole bridge on the high voltage side, the voltage matching of the high frequency chain can be realized, which is simple and easy to realize. In addition, when the DC side short-circuit fault occurs, the DC switch function can be realized, the fault can be quickly removed and the operation can be restored quickly after the fault has disappeared, and the reliability of the system can be improved. Based on the analysis of voltage and current characteristics, commutation behavior and control strategy of the proposed topology, the correctness and practicability of the proposed topology are verified by simulation analysis and physical experiments of the actual prototype.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);电力系统及发电设备控制和仿真国家重点实验室(清华大学);
【基金】：国家863高技术基金项目(2013AA050104)~~
【分类号】：TM46;TM727

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