Single-Stage Multiport Capacitive-Link Universal Power Converter as a Solid-State Transformer for Nanogrid and Microgrid Applications
Single-Stage Multiport Capacitive-Link Universal Power Converter as a Solid-State Transformer for Nanogrid and Microgrid Applications
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单级多端口电容链路通用电源转换器作为纳米电网和微电网应用的固态变压器
DOI：
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发表时间：
2019
期刊：
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通讯作者：
M. Amirabadi
中科院分区：
文献类型：
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作者：
E. Afshari;M. Amirabadi
本文提出了一种单级电容交流环节多端口功率变换器，它可以作为一个接口，用于互连不同类型的电源和负载，直流或交流，在多输入/多输出系统和固态Transformer（SST）的应用。所提出的单级变换器拓扑结构可以主动管理电源和负载之间的功率流。该转换器通过小型高频电容交流链路传输能量，从而消除了对电解电容器的需求。如果需要电流隔离，则可在链路中添加一个紧凑型高频Transformer。在本文中，一个多端口系统的三相交流输入源，一个三相交流负载，一个光伏（PV）源，和一个电池储能系统被认为是调查和研究不同的功率流的情况下，建议转换器。仿真和实验结果验证了所提出的单级拓扑作为多端口转换器的有前途的功能。
This paper presents a single-stage capacitive-ac-link multiport power converter, which can function as an interface for interconnection of different types of sources and loads, dc or ac, in multi-input/multi-output systems and solid-state transformer (SST) applications. The proposed single-stage converter topology can actively manage the power flow between the sources and loads. This converter transfers the energy through a small high frequency capacitive-ac-link, which eliminates the need for electrolytic capacitors. If galvanic isolation is required a compact high frequency transformer can be added to the link. In this paper, a multiport system with a three-phase ac input source, one three-phase ac load, one photovoltaic (PV) source, and one battery energy storage system is considered to investigate and study different power flow scenarios in the proposed converter. The simulation and experimental results verify the promising features of the proposed single-stage topology as a multiport converter.