摘要
提出了模块化光伏直流并网系统分布式自主控制策略。通过将各模块输出电压信息叠加到输入侧母线电压基准中,不仅实现了输入侧母线电压的无主从调节,而且自动实现了各模块输出电压的均衡控制。所提出的控制策略无需通信或中央控制器,实现了串并联模块化光伏直流并网系统的完全分布式自主控制,且能实现故障模块和替换模块的热插拔,具有控制简单、易于实现、可靠性高等优点,并通过实验验证了理论分析的正确性。
A distributed autonomous control strategy is proposed for a modular photovoltaic DC grid-connected power system.Autonomous voltage balancing control of output voltages and input bus voltages without master-slave regulation of these modules are achieved by adding the information of output voltage into the input voltage reference of each module.Fully distributed and automatic control of photovoltaic DC grid-connected system with series/parallel modules and hot-swap of fault/new modules are achieved by the proposed control strategy without using communication or central controller.Simple control,easy realization and high reliability can be ensured with the proposed strategy.Experimental results have been presented to verify the feasibility and effectiveness of the proposed control strategy.
作者
董晓锋
吴红飞
陆杨军
孙凯
胡海兵
DUNG Xiaofeng;WU Hongfei;LU Yangjun;SUN Kai;HU Haibing(Center for More Electric-Aircraft Power System of Ministry of Industry and Information Technology Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;State Key Laboratory of Control and Simulation of Power System and Generation Equipments,Tsinghua University,Beiiing 100084,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2018年第19期126-132,共7页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51577102)
江苏省"六大人才高峰"项目(2016-XNYQC-008)
江苏省"青蓝工程"资助项目~~
关键词
新能源发电
直流并网
输入并联输出串联
输出均压控制
renewable power generation
DC grid-connected
input-parallel output-series
output voltage sharing control
作者简介
董晓锋（1993-），男，硕士研究生，主要研究方向：电力电子与电力传动。E—mail：dongxiaofeng@nuaa．edu．cn;昊红飞（1985-），男，通信作者，博士，副教授，主要研究方向：电力电子与电力传动。E—mail：wuhongfei@nuaa．edu．cn;陆杨军（1991-），男，博士研究生，主要研究方向：电力电子与电力传动。E—mail：luyangjun@nuaa．edu．cn.
