An overview of DC–DC converter topologies for fuel cell-ultracapacitor hybrid distribution system
An overview of DC–DC converter topologies for fuel cell-ultracapacitor hybrid distribution system
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DOI：
10.1016/j.rser.2014.10.067
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发表时间：
2015-02
影响因子：
15.9
通讯作者：
O. Ahmed;J. Bleijs
中科院分区：
文献类型：
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作者：
O. Ahmed;J. Bleijs
DC微电网最近引起了研究兴趣。直流微电网由不同的可调度和不可调度的发电机和能量缓冲器组成，例如燃料电池和超级电容器，它们用于提供负载所需的稳态和瞬态功率。为了将这些发电资源连接到公共DC母线，在文献中已经提出了不同配置的电力电子转换器。对于燃料电池，使用单向DC-DC转换器，然而，对于超级电容器，需要双向DC-DC转换器来维持超级电容器的充电状态。微电网的整体效率将取决于这些转换器的效率。高效率和低成本的转换器对于获得具有成本效益的解决方案非常重要。此外，必须根据这些发电资源的特性来选择电力电子转换器。在这方面，本文介绍了不同的DC-DC转换器拓扑结构的概述，并研究其适用性的燃料电池和超级电容器发电机的基础上，这些资源的电输出特性。因此，本文介绍了燃料电池和超级电容器的特点和性能。还提出了可以用于将超级电容器与形成DC总线微电网的一部分的燃料电池发电机连接的许多配置。
DC microgrids have recently attracted research interest. A DC microgrid is composed of different dispatchable and non-dispatchable power generators and energy buffers, such as fuel cells and ultracapacitors, which are employed to provide the steady-state and transient power demanded by the load. To interface these generation resources to a common DC bus-bar, different configurations of power electronic converters have been proposed in the literature. For the fuel cell, a unidirectional DC–DC converter is utilised, for the ultracapacitor, however, a bidirectional DC–DC converter is needed to maintain the state-of-the-charge of the ultracapacitor. The overall efficiency of the microgrid will depend on the efficiency of these converters. High efficiency and low cost converters are very important to obtain a cost-effective solution. In addition, the power electronics converters must be chosen in respect to the characteristics of these generation resources. In this regard, this paper introduces an overview on different of DC–DC converter topologies and investigates their applicability for fuel cell and ultracapacitor electricity generators based on the electrical output characteristics of these resources. Thus, the fuel cell and ultracapacitor characteristics and properties are presented in this paper. A number of configurations that can be employed to interface the ultracapacitor with the fuel cell generator forming part of a DC bus microgrid are also presented.