Design and Implementation of LVDC Hybrid Circuit Breaker
Design and Implementation of LVDC Hybrid Circuit Breaker
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DOI：
10.1109/tpel.2018.2878655
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发表时间：
2019-08
影响因子：
6.7
通讯作者：
R. Lazzari;L. Piegari
中科院分区：
文献类型：
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作者：
R. Lazzari;L. Piegari
近年来，由于对分布式可再生能源扩散的兴趣，直流配电网越来越受欢迎。在这种情况下，由于电池和电力电子负载的使用增加，直流配电网也受到青睐。直流电网推广的主要限制因素是其保护装置，目前仍存在一些问题。目前，保护装置以传统的机械断路器或静电电子元件为代表。一种是中断直流电流，可靠性好，但需要维护，介入周期长。相比之下，电子开关快速可靠，但由于电压下降而降低了效率。在这种情况下，已经提出了一些混合断路器，以获得两种设备的优点。以前的混合断路器解决方案仍然存在几个关键问题，并且通常不能在不显着降低其使用寿命的情况下保护系统免受短路。本文提出了一种新的低压混合式断路器拓扑结构。分析了器件中所有有源元件和无源元件的尺寸计算过程，并通过样机的实验结果验证了所提方案的有效性。
In recent years, dc distribution grids have become increasingly popular because of the interest in the diffusion of distributed renewable energy. In this scenario, dc distribution grids are also favored because of the increased use of batteries and power electronic loads. The main limit to the spread of dc grids is their protection devices, which still present several problems. At present, protection devices are represented by traditional mechanical breakers or static electronic components. The first, which interrupt dc currents, have good reliability but need maintenance and have long intervention periods. In contrast, electronic switches are fast and reliable, but they reduce the efficiency because of their voltage drop. In this scenario, some hybrid breakers have been proposed to obtain the advantages of both devices. The previous solutions of hybrid breakers still suffer several critical issues and, usually, are not capable of protecting a system from short circuits without significantly reducing their lifetime. In this paper, a new low-voltage hybrid circuit breaker topology is proposed. The procedure to dimension all of the active and passive components in the device is analyzed, and the effectiveness of the proposed solution is proven by means of experimental results obtained using a prototype.