Modular cascaded converter for MVDC-connected photovoltaic systems

Modular cascaded converter for MVDC-connected photovoltaic systems
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DOI：
10.1109/ecce.2017.8096450
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发表时间：
2017-10
期刊：
2017 IEEE Energy Conversion Congress and Exposition (ECCE)
影响因子：
--
通讯作者：
Zheng Fan;Guangyao Qiao;Guangfu Ning;Liangcai Shu
Zheng Fan;Guangyao Qiao;Guangfu Ning;Liangcai Shu
中科院分区：
其他
文献类型：
--
作者：
Zheng Fan;Guangyao Qiao;Guangfu Ning;Liangcai Shu

文献摘要

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This paper focuses on the relevant content of the MVDC-connected photovoltaic system based on the modular cascaded structure. This paper proposes a new topology for the DC grid-connected photovoltaic system with a novel capacitor voltage balancing control strategy, including the module input power ratio feed forward and module capacitor voltage closed-loop control. The proposed control strategy is independent from the realization of the photovoltaic maximum power point tracking function of the first stage. The operation principles of the proposed converter are analyzed and verified by the simulation and experimental results.