电网技术Issue(2)：304-310,7.DOI:10.13335/j.1000-3673.pst.2014.02.005
交直流双向功率变换器的改进下垂控制策略
Control Method of Interlink-Converter in DC Microgrid
摘要
Abstract
Interlink-converter is a key part of electricity feeding grid, so its control method is particularly important. This paper presents a new droop control method which can independently switch interlinking work mode between converter and inverter. Control system judges the running state of the system according to DC bus voltage values, starts the interlinking converter and keeps it working in the mode matching the system, thus realizes the energy exchange between DC microgrid and grid while avoiding frequent activation of electric and electronic apparatus caused by fluctuation of DC bus voltage. The simulation and experiment results show that the control system can maintain light fluctuation of DC bus voltage around rating, therefore is feasible to ensure the stable operation of micro grid system and improve the reliability of the system.关键词
直流微电网/下垂控制/交直流双向功率变换器/直流母线电压/并网运行Key words
DC microgrid/droop control/interlink- converter/DC bus voltage/grid-connected mode分类
信息技术与安全科学引用本文复制引用
刘佳易,秦文萍,韩肖清,柳雪松,朱旋..交直流双向功率变换器的改进下垂控制策略[J].电网技术,2014,(2):304-310,7.基金项目
国家国际科技合作与交流专项(2010DFB63200)。Project Supported by International S&T Cooperation Projects of China (2010DFB63200) （2010DFB63200）
