期刊
IET POWER ELECTRONICS
卷 10, 期 5, 页码 536-544出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-pel.2016.0200
关键词
DC-DC power convertors; renewable energy sources; power grids; energy storage; resonant power convertors; voltage-source convertors; DC nanogrid; modular DC; DC LLC converter building block; renewable energy sources; power grid; energy storage systems; electromobility; resonant converter building block; voltage source converter
Centralised electricity systems are being integrated by a multitude of small distributed generation clusters, called nanogrids, capable of ensuring full utilisation of renewable energy sources, high flexibility, efficiency and improved reliability of the power grid due to redudancy. In this study, small photovoltaic plants combined with energy storage systems represent a promising solution for full exploitation of renewable energies and for effective development of electromobility. The purpose of this study is two-fold: first it deals with a DC nanogrid suitable for small energetic clusters such as residential or office buildings and consisting of photovoltaic arrays, fuel cells, electric vehicle charger stations, loads, then proposes a multifunctional full-bridge DC/DC LLC resonant converter building block. The latter, while accepting large input/output ranges is suitable for photovoltaic and fuel cells energy conversion, electric vehicle recharging stations and other DC applications available in the nanogrid. Proposed power system can be interconnected with conventional AC grid through voltage source converter. After description of proposed nanogrid, some analyses are performed on its core element, i.e. the DC converter building block.
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