适用于光伏发电直流并网的DC-DC变换器
摘要:未来以光伏发电为代表的可再生能源在国家政策的推动下将得到大规模的推广应用，分布式新能源就地消纳会成为未来配电网的重要特征。未来配电网中，变频电器、电动汽车充换电站、数据中心以及新型电子类终端等新型负荷不断涌现，负荷类型趋于多样化。因此，光伏发电升压汇集接入直流电网是未来发展的一个重要方向。提出了适合光伏发电直流并网的模块化DC-DC变换器级联拓扑结构，分析了影响模块间输出均压的因素，提出了一种简化控制策略。另外，还研究了模块间均压控制策略。最后，在PSCAD/EMTDC仿真平台验证了影响模块间均压的因素，并验证了所提控制策略的有效性。
Abstract：As the representative of the renewable energy, the future of wind power and photovoltaic power generation will get a large-scale promotion and application due to the national policy. Distributed new energy local consumption will become an important feature of the future distribution network. In the future distribution network, the new type of load, such as variable frequency electric appliance, electric vehicle charging station, data center and new electronic terminal, are emerging, and the load type tends to be diversified. Therefore, the photovoltaic power generation boost accessing to the DC power grid is an important direction in future. The cascade topology of modular DC-DC converters which is suitable for photovoltaic DC grid-connected is proposed, and the factors affecting the output pressure among modules are analyzed. A simplified control strategy is proposed. In addition, the control strategy between modules is also studied. Finally, the PSCAD/EMTDC simulation platform is used to verify the factors that affect the pressure between modules and verify the effectiveness of the proposed control strategy.
标题：适用于光伏发电直流并网的DC-DC变换器
title:DC-DC Converter for DC Grid-Connected Photovoltaic Power Generation Systems
作者：任向阳, 周攀, 戴朝波
authors:REN Xiangyang, ZHOU Pan, DAI Chaobo
关键词：光伏发电,直流并网,DC-DC变换器,
keywords:photovoltaic power generation,direct current (DC)grid-connected,DC-DC converter,
发表日期：2020-05-01
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