Research on grid-connected photovoltaic power generation technology based on FREEDM system

TENCON 2015 - 2015 IEEE Region 10 Conference Pub Date : 2015-11-01 DOI:10.1109/TENCON.2015.7372766

Hao Li, Ying Sun, Kejun Li, Wenwen Xiao, Mi Xu, Liyuan Gao

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引用次数: 1

Abstract

Solar is a kind of new energy, and photovoltaic power generation is an important way of distributed generation; FREEDM system is a kind of Energy Internet model, which is presented by Professor Alex Q. Huang from North Carolina State University in 2008. Combining the advantages of photovoltaic power generation and FREEDM system, this paper proposes a kind of grid-connected photovoltaic power generation technology based on FREEDM system. With the help of MATLAB/simulink software, we build the model of photovoltaic array and solid state transformer that is the core part of FREEDM system, and realize the goal of maximum power point tracking. The output of photovoltaic array can not only be connected into the low voltage AC power grid through single phase inverter, but also can be connected into 10 Kv grid through solid state transformer and three phase inverter. Among them, we adopt active frequency drift method in the model of single phase inverter, high-frequency transformer in DC/DC converter and voltage source converter topology based on d-q vector control system in the model of three phase inverter.

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基于FREEDM系统的光伏并网发电技术研究

太阳能是一种新能源，光伏发电是分布式发电的重要方式;FREEDM系统是一种能源互联网模型，是由美国北卡罗莱纳州立大学的Alex Q. Huang教授于2008年提出。结合光伏发电与FREEDM系统的优点，提出了一种基于FREEDM系统的光伏并网发电技术。借助MATLAB/simulink软件，建立了FREEDM系统核心部件光伏阵列和固态变压器的模型，实现了最大功率点跟踪的目标。光伏阵列的输出既可以通过单相逆变器接入低压交流电网，也可以通过固态变压器和三相逆变器接入10kv电网。其中，在单相逆变器模型中采用主动频率漂移法，在DC/DC变换器中采用高频变压器，在三相逆变器模型中采用基于d-q矢量控制系统的电压源变换器拓扑。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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TENCON 2015 - 2015 IEEE Region 10 Conference

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